Travel behavior and deferral of Dutch blood donors: consequences for donor availability.
Lieshout-Krikke, Ryanne W; Oei, Welling; Habets, Karin; Pasker-de Jong, Pieternel C M
2015-01-01
Donors returning from areas with outbreaks of infectious diseases may donate infectious blood back home. Geographic donor deferral is an effective measure to ensure the blood safety, but donor deferral may pose a threat for the blood supply especially after holiday seasons. Insight into the travel behavior of blood donors is a first step to define appropriate deferral strategies. This study describes the travel behavior of Dutch donors, the actual deferral, and the consequences of deferral strategies on donor availability. A questionnaire designed to assess travel behavior (destination, frequency, and duration of travels) was sent to 2000 Dutch donors. The impact of travel deferral policies on donor availability was calculated, expressed as proportionate decrease in donor availability. The deferral policies considered were 1) deferral based on entire countries instead of affected regions where an infection is prevalent and 2) deferral after any travel outside Europe ("universal deferral"). Of the 1340 respondents, 790 (58.9%) donors traveled within Europe only, 61 (4.6%) outside Europe only, and 250 (18.7%) within and outside Europe. The deferral for entire countries and universal deferral would lead to 11.1 and 11.4% decrease in donor availability, respectively. Most Dutch donors traveled outside the Netherlands, while 23.2% traveled outside Europe. Universal deferral resulted in an additional decrease in donor availability of 0.3% compared with deferral for entire countries instead of affected regions where an infection is prevalent. Thus, the universal deferral could be considered as a simpler and safer measure. © 2014 AABB.
Goldman, Mindy; Yi, Qi-Long; Ye, Xibiao; Tessier, Lorna; O'Brien, Sheila F
2011-08-01
Few donor criteria are as contentious as the deferral of men who have had sex with men (MSM). We performed an anonymous donor survey to determine attitudes toward current screening and the feasibility and acceptability of adoption of alternate donor criteria for MSM. Donors who had successfully donated to Canadian Blood Services were randomly mailed an anonymous questionnaire several weeks after donation; there were 40,000 donors sampled, evenly split between first-time and repeat donors. The response rate was 45.5%. The vast majority of donors found the current screening questions and clinic environment acceptable. Attention to clinic educational materials was poor. A total of 53% felt that the MSM criteria should be changed; many were supportive of criteria based on specific behaviors rather than a period of abstinence. Gender-neutral questions such as number of sexual partners would result in deferral of large numbers of donors. Many donors would support a change in MSM deferral policy. Implementation of strategies based on donor attention to additional material would be challenging. Universal use of simple gender-neutral questions would result in very high donor loss and are therefore not an acceptable option. The acceptability and feasibility of various screening approaches should be explored further with both donors and advocacy groups. © 2011 American Association of Blood Banks.
Cahill, Sean; Wang, Timothy
2017-01-01
In recent years, countries around the world have revised their blood donation policies regarding gay and bisexual men, and other men who have sex with men (MSM). The United States lifted the lifetime ban on MSM from donating blood in 2015, replacing it with a 1 year deferral policy allowing MSM to donate if they abstain from sex for 12 months. Other countries followed suit, while Italy and Spain have implemented deferral policies based on individual risk assessments regardless of sexual orientation. If Israel were to adopt a one year deferral policy for MSM, as recommended by Drs. Ginsberg et al. in this issue, the increase in risk to the blood supply would be minimal. Moving to a 1 year deferral policy would be an important step forward, but it could still be seen as stigmatizing to gay and bisexual men. We recommend that Israel consider a deferral policy based on individual risk assessment rather than a blanket deferral for all MSM. MSM can engage in low- and high-risk sexual behaviors. Those who consistently engage in low-risk behaviors, such as using condoms and pre-exposure prophylaxis consistently, pose little risk to the blood supply. An individual risk assessment policy would screen potential donors of all sexual orientations for low-, medium-, and high-risk behaviors. Potential donors identified as high-risk, such as injection drug users, would justifiably be subject to lengthy or permanent bans. MSM who engage in low-risk sexual behaviors would be allowed to donate without deferral. Medium-risk donors, such as men who have recently had unprotected anal sex with another man, would be subject to a deferral period of 1 month, which is in line with the window period of current HIV screening technology. Most fourth generation HIV tests can detect HIV within a month, and the nucleic acid test used to screen blood can detect HIV in just 9-11 days. Various studies have developed questions for ascertaining HIV risk among MSM which could be used in blood donor questionnaires. Using tablets or other technology that enhances privacy to conduct the blood donor questionnaire could improve collection of this sensitive information.
Lucky, Tarana T A; Seed, Clive R; Waller, Daniel; Lee, June F; McDonald, Ann; Wand, Handan; Wroth, Stephen; Shuttleworth, Glen; Keller, Anthony J; Pink, Joanne; Wilson, David P
2014-07-01
Using a predonation screening questionnaire, potential blood donors are screened for medical or behavioral factors associated with an increased risk for transfusion-transmissible infection. After disclosure of these risks, potential donors are deferred from donating. Understanding the degree of failure to disclose full and truthful information (termed noncompliance) is important to determine and minimize residual risk. This study estimates the prevalence of, and likely reasons for, noncompliance among Australian donors with the deferrals for injecting drug use, sex with an injecting drug user, male-to-male sex, sex worker activity or contact, and sex with a partner from a high-HIV-prevalence country. An anonymous, online survey of a nationally representative sample of Australian blood donors was conducted. Prevalence of noncompliance with deferrable risk categories was estimated. Factors associated with noncompliance were determined using unadjusted and adjusted odds ratios. Of 98,044 invited donors, 30,790 donors completed the survey. The estimated prevalence of overall noncompliance (i.e., to at least one screening question) was 1.65% (95% confidence interval CI, 1.51%-1.8%). Noncompliance with individual deferrals ranged from 0.05% (sex work) to 0.54% (sex with an injecting drug user). The prevalences of the disclosed exclusionary risk behaviors were three to 14 times lower than their estimated prevalence in the general population. The prevalence of noncompliance is relatively low but our estimate is likely to be a lower bound. The selected high-risk behaviors were substantially less common in blood donors compared to the general population suggesting that self-deferral is effective. Nevertheless, a focus on further minimization should improve the blood safety. © 2014 AABB.
Hughes, Shana; Sheon, Nicolas; Siedle-Khan, Bob; Custer, Brian
2015-12-01
Indefinite deferral from donation for any man who discloses having had sex with another man even once since 1977 (MSM77) is the US FDA's standing policy. This qualitative component of the Blood Donation Rules and Opinion Study was designed to provide insight into the perceptions and practices of current or previous donors with MSM history. Forty human immunodeficiency virus (HIV)-negative MSM completed an online survey, indicating that they had donated blood and were willing to be interviewed. Semistructured, individual interviews with these key informants covered donation experience and motivations, perceptions of MSM77, policy change preferences, and possible impact of a change to a time-limited deferral. Transcripts were coded deductively and inductively, following a modified Grounded Theory approach. Analysis identified recurrent and divergent themes. Ninety-five percent of participants endorsed modifying MSM77. Preferred deferral length ranged from none to 5 years; a common opinion was that a science-based deferral period would be less than 1 year. Other policy change recommendations included incorporating questions about specific HIV risk behaviors to the donor questionnaire for all potential donors. Interviewees recognized HIV infection rates are higher in MSM than the general US population, but participants considered themselves low-risk for HIV, donated blood "to save lives," and justified their recommendations as being more effective ways to identify donors at risk for HIV. Results suggest that MSM donors are concerned with blood safety; they can be appealed to as such. Communications about a new deferral policy should include scientific explanations and acknowledge altruistic motivations of potential donors. © 2015 AABB.
Eligibility and willingness to donate blood in men who have (had) sex with men.
Romeijn, Bas; Merz, Eva-Maria; Kok, Gerjo; de Kort, Wim; van Dongen, Anne
2018-03-01
Several countries have changed, or are reevaluating, their blood donor policies for men who have had sex with men (MSM). Changing policies has consequences for donor recruitment and the donor pool. In this study, we investigated whether MSM are eligible and willing to donate blood. Members of a research panel (n = 4422) in the Netherlands were invited to participate in an online survey. We asked questions about male-to-male sex and risk behavior that are also asked during the predonation screening of a blood donor. Furthermore, we asked questions about willingness to donate. The total response rate was 60% (n = 2654). Of MSM nondonors (n = 230), 32.2% would be eligible to donate under a 12-month deferral policy, according to their reported risk history and last male-to-male sex. In other scenarios, 42.6% (4-month deferral), 38.7% (6-month deferral), and 18.7% (5-year deferral) would be eligible to donate. When not taking their last male-to-male sex into account (n = 203), 47.8% of MSM reported a moderate or high willingness to donate. A 12-month deferral after last male-to-male sex is a commonly used criterion by blood services. Approximately one-third of the MSM in our study would be eligible to donate under this deferral policy. Higher proportions of MSM would be eligible to donate in shorter deferral scenarios. Almost half of MSM are willing to donate blood. Targeting MSM by donor recruitment campaigns could therefore prove fruitful. © 2017 AABB.
Analysis of blood donor pre-donation deferral in Dubai: characteristics and reasons.
Al Shaer, Laila; Sharma, Ranjita; AbdulRahman, Mahera
2017-01-01
To ensure an adequate and safe blood supply, it is crucial to select suitable donors according to stringent eligibility criteria. Understanding the reasons for donor deferral can help in planning more efficient recruitment strategies and evaluating donor selection criteria. This study aims to define donor pre-donation deferral rates, causes of deferral, and characteristics of deferred donors in Dubai. This retrospective study was conducted on all donors who presented for allogeneic blood donation between January 1, 2010, until June 30, 2013, in Dubai Blood Donation Centre, accredited by the American Association of Blood Banks. The donation and deferral data were analyzed to determine the demographic characteristics of accepted and deferred donors, and frequency analyses were also conducted. Among 142,431 individuals presenting during the study period, 114,827 (80.6%) were accepted for donation, and 27,604 (19.4%) were deferred. The overall proportion of deferrals was higher among individuals less than 21 years old (35%, P <0.000), females (44% were deferred compared to 15% of males, P <0.0001), and first-time donors (22% were deferred vs 14% of repeat donors, P <0.0001). The main causes for a temporary deferral were low hemoglobin and high blood pressure. The deferral rate among blood donors in Dubai is relatively high compared to the internationally reported rates. This rate was higher among first-time donors and females, with low hemoglobin as the major factor leading to a temporary deferral of donors. Strategies to mitigate deferral and improve blood donor retention are urged in Dubai to avoid additional stress on the blood supply.
Analysis of blood donor pre-donation deferral in Dubai: characteristics and reasons
Al Shaer, Laila; Sharma, Ranjita; AbdulRahman, Mahera
2017-01-01
Background To ensure an adequate and safe blood supply, it is crucial to select suitable donors according to stringent eligibility criteria. Understanding the reasons for donor deferral can help in planning more efficient recruitment strategies and evaluating donor selection criteria. This study aims to define donor pre-donation deferral rates, causes of deferral, and characteristics of deferred donors in Dubai. Materials and methods This retrospective study was conducted on all donors who presented for allogeneic blood donation between January 1, 2010, until June 30, 2013, in Dubai Blood Donation Centre, accredited by the American Association of Blood Banks. The donation and deferral data were analyzed to determine the demographic characteristics of accepted and deferred donors, and frequency analyses were also conducted. Results Among 142,431 individuals presenting during the study period, 114,827 (80.6%) were accepted for donation, and 27,604 (19.4%) were deferred. The overall proportion of deferrals was higher among individuals less than 21 years old (35%, P<0.000), females (44% were deferred compared to 15% of males, P<0.0001), and first-time donors (22% were deferred vs 14% of repeat donors, P<0.0001). The main causes for a temporary deferral were low hemoglobin and high blood pressure. Discussion The deferral rate among blood donors in Dubai is relatively high compared to the internationally reported rates. This rate was higher among first-time donors and females, with low hemoglobin as the major factor leading to a temporary deferral of donors. Strategies to mitigate deferral and improve blood donor retention are urged in Dubai to avoid additional stress on the blood supply. PMID:28579846
Federal Register 2010, 2011, 2012, 2013, 2014
2010-02-24
... on sexual behavior deferrals and their impact on blood safety. The two main study aims are: (1) To assess infectious disease marker prevalence in donors who are deferred for higher risk sexual and non... Officer, NHLBI, Two Rockledge Center, Suite 10042, 6701 Rockledge Drive, Bethesda, MD 20892-7950, or call...
Federal Register 2010, 2011, 2012, 2013, 2014
2010-05-07
... on sexual behavior deferrals and their impact on blood safety. The two main study aims are: (1) To assess infectious disease marker prevalence in donors who are deferred for higher risk sexual and non.... George Nemo, Project Officer, NHLBI, Two Rockledge Center, Suite 10042, 6701 Rockledge Drive, Bethesda...
Blood Donor Deferral among Students in Northern Japan: Challenges Ahead
Ngoma, Alain Mayindu; Goto, Aya; Nollet, Kenneth E.; Sawamura, Yoshihiro; Ohto, Hitoshi; Yasumura, Seiji
2014-01-01
Summary Background As Japan's aging society needs more blood, young students comprise a progressively smaller portion of the donor pool. To ensure a safe and sustainable blood supply, it is crucial to select suitable donors. This study aims to evaluate donor deferral rates, causes of deferral, and characteristics of deferred Japanese students. Methods Computerized records of blood centers in northern Japan (Miyagi and Fukushima Prefectures) from March 2010 through March 2011 were retrospectively analyzed. Results Among 231,361 individuals visiting during the 12-month period, 24,778 were students. Of these, 19,193 (77%) attempted donation, and 5,585 (23%) were deferred. Low hemoglobin, questionnaire-based interview decisions, and medication were the main reasons for temporary deferral. Age, sex, and blood center location were associated with low hemoglobin; donation history and blood center location were associated with medication-based deferral. The odds ratio among female students deferred for low hemoglobin was 35.48 with a 95% CI of 27.74–45.38. Conclusions These results suggest that continued efforts are needed to motivate deferred potential donors to return, to prevent low hemoglobin especially among females, and to review medical interview decisions, while paying close attention to regional differences. PMID:25254020
Charles, K S; Hughes, P; Gadd, R; Bodkyn, C J; Rodriguez, M
2010-02-01
The majority of blood donations in Trinidad and Tobago are made as replacement by family members or friends. National Blood Transfusion Policy was drafted in 2007 to promote voluntary, repeated donation. The objective of this study is to assess the current rate and reasons for donor deferral, and the aim is to guide the proposed donor education and recruitment programme. A retrospective study of pre-donation deferral of prospective blood donors at the National Blood Transfusion Centre, Port of Spain, Trinidad and Tobago, was conducted. Records of all pre-donation deferrals over a 12-month period were studied. As many as 11,346 pre-donation screening interviews were conducted. There were 4043 (35.6%) deferrals. The most common reasons for donor deferral were exposure to high-risk sexual activity (27.6%), low haemoglobin 22.2% and hypertension 17.5%. Other reasons such as medication, chronic medical illness, tattoos, travel history, recent pregnancy, surgery or presentation outside the accepted age limit caused 33.8% of all deferrals and the majority (34.7%) of male deferrals. Low haemoglobin (44.5%) was the most common reason among females. The rate of deferral of voluntary donors was not significantly different from that for replacement donors (31.7 vs. 35.4%, P = 0.25). This study exposed a lack of public awareness as the principal reason for an unacceptably high rate of donor deferral. Donor education about selection criteria needs to be urgently addressed as an objective of the National Policy. Monitoring and evaluation of deferral rates and reasons could be used as one indicator of the effectiveness of the Policy.
Rates and reasons for blood donor deferral, Shiraz, Iran. A retrospective study.
Kasraian, Leila; Negarestani, Neda
2015-02-01
Knowledge of the reasons for donor deferral can help in planning more efficient recruitment strategies and evaluating donor selection criteria. This study aimed to investigate the rates and reasons for donor deferral. Retrospective study at Shiraz Blood Transfusion Center, Shiraz, Iran. 141,820 volunteers were interviewed confidentially by physicians before blood donation. The rate of and reasons for donor deferral were investigated according to demographic characteristics. The data were analyzed using the comparison-of-proportions test of the MedCalc statistical software. 43,839 people (30.9%) who had come for blood donation were deferred, 1,973 (4.5%) of them permanently. The deferral rate was significantly higher among women, single individuals and first-time donors, compared with men, married individuals and those with a history of previous donation (P < 0.0001). The deferral rate was significantly higher in the 17 to 30-year-old group (P < 0.05). The reasons for deferral were divided into five categories: risk factors possibly related to HIV or hepatitis (43.6%), underlying diseases (31.9%), non-eligible conditions (13.5%), medications that interfere with blood donation (7.8%) and risk factors that may relate to bacterial or viral infections except HIV and hepatitis infections (3.2%). Effective measures are required for documenting the impact of deferral on blood availability, monitoring the effectiveness of and need for deferral, and determining the reasons and rates of deferral.
Almeida, Fernanda N; Sabino, Ester C; Tunes, Gisela; Schreiber, George B; da Silva, Pedro Paulo S B; Carneiro-Proietti, Anna Barbara F; Ferreira, João Eduardo; Mendrone, Alfredo
2013-12-01
Few longitudinal studies have examined the long-term effect on deferral for low haematocrit (Hct) or haemoglobin, indicators of presence of anaemia. This study retrospectively analysed 11 years of donation history to examine predictors related to such deferrals among repeat blood donors. We included 385,357 donors with at least two visits to the blood centre between January 1996 and December 2006 who were not deferred due to haematocrit at their first visit. We evaluated variables related to the development of low Hct (LHct-below 38% for females and 39% for males) after whole blood donations. Over the 11-year period, 3,850 (1.5%) of the 252,301 males and 18,104 (13.6%) of the 133,056 females were deferred due to LHct at some point after their first donation. Genders, age, baseline Hct, Hct at the visit immediately before deferral due to LHct, and interval between donations, were associated with higher rates of development of LHct in repeat donors. Our analysis showed that deferral due to low Hct levels in repeat blood donors is highly prevalent in Brazil. Assigning longer donations intervals based on the Hct levels at the qualifying donation or supplementing iron to donors at risk may decrease deferral rate of donors with low Hct. Copyright © 2013 Elsevier Ltd. All rights reserved.
Blatyta, Paula Fraiman; Custer, Brian; Gonçalez, Thelma Terezinha; Birch, Rebecca; Lopes, Maria Esther; Ferreira, Maria Ines Lopes; Proietti, Anna Barbara Carneiro; Sabino, Ester Cerdeira; Page, Kimberly; de Almeida Neto, Cesar
2013-01-01
Background HIV risk factor screening among blood donors remains a cornerstone for the safety of blood supply and is dependent on prospective donor self-disclosure and an attentive predonation interview. Residual risk of HIV transmission through blood transfusion is higher in Brazil than in many other countries. Audio computer-assisted structured-interview (ACASI) has been shown to increase self-reporting of risk behaviors. Study design and methods This cross-sectional study was conducted between January 2009 and March 2011 at four Brazilian blood centers to identify the population of HIV-negative eligible blood donors that answered face-to-face interviews without disclosing risks, but subsequently disclosed deferrable risk factors by ACASI. Compared to the donor interview, the ACASI contained expanded content on demographics, sexual behavior and other HIV risk factors questions. Results 901 HIV-negative blood donors were interviewed. On the ACASI, 13% of donors (N=120) declared a risk factor that would have resulted in deferral that was not disclosed during the face-to-face assessment. The main risk factors identified were recent unprotected sex with an unknown or irregular partner (49 donors), sex with a person with exposure to blood/ fluids (26 donors), multiple sexual partners (19 donors), and male-male sexual behavior (10 donors). Independent factors associated with the disclosure of any risk factor for HIV were age (≥40 years vs. 18–25 years, AOR=0.45; 95% CI 0.23–0.88) and blood center (Hemope vs. Hemominas, AOR=2.51; 95% CI 1.42–4.44). Conclusion ACASI elicited increased disclosure of HIV risk factors among blood donors. ACASI may be a valuable modality of interview to be introduced in Brazilian blood banks. PMID:23521083
Czerwinski, Michal; Grabarczyk, Piotr; Stepien, Malgorzata; Kubicka-Russel, Dorota; Tkaczuk, Katarzyna; Brojer, Ewa; Rosinska, Magdalena
2017-08-01
Since the introduction of nucleic acid testing (NAT) for routine blood donor screening, hepatitis C virus (HCV) RNA-only detection rates reported from Poland have been higher than in most other European countries. To examine factors that likely contribute to these window-period donations, we conducted a case-control study among 47 recently HCV-infected blood donors (cases), who gave blood between July 2002 and June 2014, and 141 controls matched by age, sex, and donation dates. Firth-corrected, conditional logistic regression models were fitted to estimate adjusted odds ratios and 95% confidence intervals. Adjusted population-attributable fractions were calculated based on the distribution of exposure among the cases. On multivariate analysis, recent exposures in health care environments not routinely ascertained through predonation questionnaires were strongly associated with recently acquired HCV infection. These exposures included minor medical and dental procedures in the preceding 6 months (adjusted odds ratio, 5.77; 95 % confidence interval, 2.01-18.53). However, based on the population-attributable fraction, more important were behavioral deferrable risks that went unreported at the time of donation, such as high-risk sexual behaviors in the preceding 6 months (population-attributable fraction, 34%) or lifetime histories of drug use (population-attributable fraction, 28%). This study raises questions about the effectiveness of deferral policy in excluding high-risk individuals. In addition, it provides further evidence supporting short, temporal deferrals for small medical procedures and dental treatments in Poland. © 2017 AABB.
Impact of changes to policy for Mexican risk travel on Canadian blood donor deferrals.
O'Brien, Sheila F; Uzicanin, Samra; Choquet, Karine; Yi, Qi-Long; Fan, Wenli; Goldman, Mindy
2013-10-01
Travel to malaria risk areas such as Mexico is a common source of donor deferral in Canada. On February 21st, 2011 the deferrable regions in Mexico were revised to permit donation if donors travelled to the state of Quintana Roo, Mexico, a popular ocean-side resort area. Canadian travel data and malaria deferral rates since 2007 were plotted to examine trends. Deferral records in one centre were accessed from January to April, 2011 to tabulate travel destinations of deferred donors immediately before and after the change. Travel to Mexico and the Caribbean accounts for 63% of general population travel, and travel to Mexico has been increasing (P <0.05). Deferral for short-term malaria risk travel has a strong seasonal trend with peaks in the winter and troughs in the summer. Approximately 36,000 fewer donations were lost following the change, a reduction of 37% from the previous year. Deferrals in one centre increased for Caribbean/Central America after the change (P <0.05) consistent with the seasonal trend, but decreased for Mexico (P <0.05). Deferrals for malaria risk travel are substantial. Careful revision and refinement of risk areas of travel can significantly reduce the burden of deferral.
Arora, Disha; Garg, Ketan; Kaushik, Ankit; Sharma, Richa; Rawat, D S; Mandal, A K
2016-11-01
With increasing demand of platelet component each day, blood bank plays a pivotal role in ensuring supply of safe blood as and when required. Plateletpheresis procedure is a relatively simple, safe and important adjunct to blood bank inventory. However, recruitment of healthy blood donors is a challenge that the health industry is facing today. To determine the reasons and rates of apheresis donor deferral along with investigation of adverse reactions encountered during the procedure. Records of single donor apheresis were retrospectively analysed from 1 st January 2010 to 31 st December 2014. The study was carried out at Blood Bank, Safdarjung Hospital, New Delhi, India. The donor details that were studied included - age, sex, type of donation (voluntary/replacement/ repeat), reason for donor deferral and type of adverse reaction, if encountered during the procedure. Among the 478 donors screened for plateletpheresis procedure during a study period of 5 years, 134 (28.03%) were deferred. Temporary deferrals accounted for majority (93.28%) of the deferrals. Low platelet count (50.75%) was the main reason of donor deferral followed by low haemoglobin (20.89%). Amongst the 344 selected donors, 15 (4.36%) had some type of adverse reaction associated with the procedure. We suggest that the selection criteria for plateletpheresis donors should be revised to deal with shortage of apheresis donors. The criteria regarding minimum pre-procedure platelet count (above1.5 lac/μl) and haemoglobin (above 12.5 g/dl) need to be lowered so as to suit the Indian scenario. The lower adverse reaction rates, 14/344 (4.06%) associated with this procedure encourages safety of donors and is important in recruitment of new donors.
Tauma, G; Harries, A D; Merilles, O E A; Tekoaua, R; Teriboriki, B
2016-12-21
Setting: Tungaru Central Hospital Blood Bank Laboratory, Nawerewere, Tarawa, Kiribati. Objective: To determine characteristics, deferrals and reasons for deferral amongst blood donors from 2011 to 2016. Design: A cross-sectional study using routinely collected data. Results: From January 2011 to March 2016, 8531 potential blood donors were registered. For each full year, the proportion of voluntary non-remunerated blood donors (VNRBD) was below 10%, although it increased to 13% in 2015. The overall proportion of blood donors deferred increased each year over the 5-year period, from 44% to 57%, with similar increases in deferrals in VNRBD and family replacement donors (FRD). Among all blood donors, a higher proportion of females than males (59% vs. 43%) and VNRBD than FRD (56% vs. 44%) were deferred ( P < 0.001). Deferrals were due to 1) failing the medical questionnaire (53%), 2) having anaemia and/or high white cell count (26%), or 3) transfusion-transmissible infections (21%). More VNRBD were deferred due to failing the medical questionnaire, while more FRD were deferred due to anaemia and/or high white-cell count; the number of deferrals was similar for transfusion-transmissible infections. Conclusion: This 5-year study showed that the proportion of VNRBD is low and deferrals are higher for this group than for FRD. There is a strong case for encouraging both types of donor in the country.
Deconstructing the risk for malaria in United States donors deferred for travel to Mexico.
Spencer, Bryan; Kleinman, Steven; Custer, Brian; Cable, Ritchard; Wilkinson, Susan L; Steele, Whitney; High, Patrick M; Wright, David
2011-11-01
More than 66,000 blood donors are deferred annually in the United States due to travel to malaria-endemic areas of Mexico. Mexico accounts for the largest share of malaria travel deferrals, yet it has extremely low risk for malaria transmission throughout most of its national territory, suggesting a suboptimal balance between blood safety and availability. This study sought to determine whether donor deferral requirements might be relaxed for parts of Mexico without compromising blood safety. Travel destination was recorded from a representative sample of presenting blood donors deferred for malaria travel from six blood centers during 2006. We imputed to these donors reporting Mexican travel a risk for acquiring malaria equivalent to Mexican residents in the destination location, adjusted for length of stay. We extrapolated these results to the overall US blood donor population. Risk for malaria in Mexico varies significantly across endemic areas and is greatest in areas infrequently visited by study donors. More than 70% of blood donor deferrals were triggered by travel to the state of Quintana Roo on the Yucatán Peninsula, an area of very low malaria transmission. Eliminating the travel deferral requirement for all areas except the state of Oaxaca might result in the recovery of almost 65,000 blood donors annually at risk of approximately one contaminated unit collected every 20 years. Deferral requirements should be relaxed for presenting donors who traveled to areas within Mexico that confer exceptionally small risks for malaria, such as Quintana Roo. © 2011 American Association of Blood Banks.
Deconstructing the Risk for Malaria in United States Donors Deferred for Travel to Mexico
Spencer, Bryan; Kleinman, Steven; Custer, Brian; Cable, Ritchard; Wilkinson, Susan L; Steele, Whitney; High, Patrick M; Wright, David
2013-01-01
Background More than 66,000 blood donors are deferred annually in the U.S. due to travel to malaria-endemic areas of Mexico. Mexico accounts for the largest share of malaria travel deferrals, yet it has extremely low risk for malaria transmission throughout most of its national territory, suggesting a suboptimal balance between blood safety and availability. This study sought to determine whether donor deferral requirements might be relaxed for parts of Mexico without compromising blood safety. Study Design and Methods Travel destination was recorded from a representative sample of presenting blood donors deferred for malaria travel from six blood centers during 2006. We imputed to these donors reporting Mexican travel a risk for acquiring malaria equivalent to Mexican residents in the destination location, adjusted for length of stay. We extrapolated these results to the overall U.S. blood donor population. Results Risk for malaria in Mexico varies significantly across endemic areas and is greatest in areas infrequently visited by study donors. Over 70% of blood donor deferrals were triggered by travel to the state of Quintana Roo on the Yucatán Peninsula, an area of very low malaria transmission. Eliminating the travel deferral requirement for all areas except the state of Oaxaca might result in the recovery of almost 65,000 blood donors annually at risk of approximately one contaminated unit collected every 20 years. Conclusion Deferral requirements should be relaxed for presenting donors who travelled to areas within Mexico that confer exceptionally small risks for malaria, such as Quintana Roo. PMID:21564102
Grégoire, Y; Germain, M; Delage, G
2018-05-01
Since 25 May 2010, all donors at our blood centre who tested false-positive for HIV, HBV, HCV or syphilis are eligible for re-entry after further testing. Donors who have a second false-positive screening test, either during qualification for or after re-entry, are deferred for life. This study reports on factors associated with the occurrence of such deferrals. Rates of second false-positive results were compared by year of deferral, transmissible disease marker, gender, age, donor status (new or repeat) and testing platform (same or different) both at qualification for re-entry and afterwards. Chi-square tests were used to compare proportions. Cox regression was used for multivariate analyses. Participation rates in the re-entry programme were 42·1%: 25·6% failed to qualify for re-entry [different platform: 2·7%; same platform: 42·9% (P < 0·0001)]. After re-entry, rates of deferral for second false-positive results were 8·4% after 3 years [different platform: 1·8%; same platform: 21·4% (P < 0·0001)]. Deferral rates were higher for HIV and HCV than for HBV at qualification when tested on the same platform. The risk, when analysed by multivariate analyses, of a second deferral for a false-positive result, both at qualification and 3 years after re-entry, was lower for donors deferred on a different platform; this risk was higher for HIV, HCV and syphilis than for HBV and for new donors if tested on the same platform. Re-entry is more often successful when donors are tested on a testing platform different from the one on which they obtained their first false-positive result. © 2018 International Society of Blood Transfusion.
Van der Bij, Akke K; Coutinho, Roel A; Van der Poel, Cees L
2006-10-01
To evaluate the effectiveness of blood donor selection, this study reports risk profiles of donors with transfusion-transmissible infections as obtained by ongoing surveillance, 1995 through 2003, in the Netherlands. A surveillance program was installed to monitor risk profiles among new and repeat donors infected with human immunodeficiency virus (HIV), hepatitis C virus (HCV), hepatitis B virus (HBV), or human T-lymphotropic virus (HTLV), or positive for the presence of syphilis antibodies. At posttest counseling, a physician interviewed donors to clarify possible sources of infection. A total of 167 repeat donors and 404 new donors were interviewed: 33 with HIV, 123 with HCV, 279 with HBV, 21 with HTLV, and 112 with syphilis antibodies. Most HBV, HCV, and HTLV infections were among new donors (80, 85, and 67%), whereas most HIV infections were among repeat donors (79%). Nearly 25 percent of the donors did not report factors at screening that would have deferred them from donating blood. At posttest interviews, new donors with HCV often reported injecting drug use (19%). Repeat donors with HIV often reported male-to-male sex (8/26, 31%). A significant level of deferrable behavioral risks was found among donors with confirmed transfusion-transmissible infections that persist despite current donor selection. Reporting such behavior at initial donor selection would have eliminated a substantial part of the infections found. This study argues against relaxing the existing donor deferral of persons practicing male-to-male sex, given their significant proportion of HIV infections among repeat donors. Systematic surveillance of risk factors among infected blood donors provides ongoing information about the effectivity of donor selection and is recommended to evaluate and optimize blood policies.
Munsterman, K A; Grindon, A J; Sullivan, M T; Trouern-Trend, J; Blackmon, M J; Watkins, J; Williams, A E
1998-01-01
The recent addition of a computerized donor deferral registry to American Red Cross blood donation procedures has enabled blood center staffs to identify, before donation, persons who attempt to donate despite previous deferral. The current study investigated reasons that deferred donors return to donate, despite having been notified that they are ineligible. Anonymous mail surveys requesting demographic information, details of last donation or attempted donation, and assessments of incentives for donating were sent to 311 donors presenting inappropriately at blood drives and 849 matched controls in three American Red Cross regions between April and July 1996. Responses were received from a total of 113 deferred donors and 388 matched controls. Analysis of the 49 permanently deferred donors indicated that they were more likely than controls to donate blood to receive test results or to be awarded community service credit. Responses also revealed that some deferred donors may return to donate blood because of a misunderstanding of the deferral message or erroneous recruitment by blood center staff. There is a need before donation for the provision of educational materials regarding the window period of infection and for careful consideration of the use of incentives to attract donors to blood centers. It is also important to provide to donors a clear and consistent message regarding their test results and deferral status.
Thaikruea, Lakkana; Nantachit, Niwes; Leetrakool, Nipapan; Fongsatitkul, Ladda; Sompan, Prakai; Heaton, Andrew; Nelson, Kenrad E
2008-09-01
A self-deferral form has been used to screen Chiang Mai University Hospital blood donors and was improved in 2005. It has never been evaluated. The study aimed to assess the self-deferral form procedures in detecting infected donors. Sera from 5,083 donors, who passed the self-deferral screening form, were tested with the routine immuno-assays (serology) for HIV 1 and 2 antibodies, P24 antigen, HCV antibodies, HBV surface antigen, and syphilis. Antibody negative sera were also tested individually with the the Procleix Ultrio Assay for HIV-1 DNA, HCV RNA, and HBV DNA. The donors who had discrepant results between serology and NAT were evaluated with additional tests, including a more sensitive Alternative Nucleic Acid Test, AntiBcore IgM, AntiBcore IgG, HBsAg and Anti HBs. Among 5,083 donors, 331 (6.5%) had at least one positive marker. In multiple logistic regression analysis, the statistically significant factors (adjusted odds ratio and 95% CI) for infection were age 30 years or below [1.45 (1.03, 2.03)], male gender [2.73 (1.64, 4.56)], primary school or lower education [1.56 (1.09, 2.23)], first-time donation [1.82 (1.25, 2.67)], and frequent donation [0.80 (0.70, 0.92)]. The safest donors were females, older than 30 years, with an education more than primary school, and frequent donation. Because of missing responses to some sensitive questions, there remains a need for further improvement of the self-deferral form.
Galarneau, Charlene
2010-02-01
U.S. Food and Drug Administration (FDA) policy prohibits blood donation from men who have had sex with men (MSM) even one time since 1977. Growing moral criticism claims that this policy is discriminatory, a claim rejected by the FDA. An overview of U.S. blood donation, recent donor deferral policy, and the conventional ethical debate introduce the need for a different approach to analyzing discrimination claims. I draw on an institutional understanding of injustice to discern and describe five features of the MSM policy and its FDA context that contribute to its discriminatory effect. I note significant similarities in the 1980s policy of deferring Haitians, suggesting an historical pattern of discrimination in FDA deferral policy. Finally, I point to changes needed to move toward a nondiscriminatory deferral policy.
Blood donor deferral for men who have sex with men: still room to move.
Haire, Bridget; Whitford, Kate; Kaldor, John M
2018-03-01
Like a number of other countries, Australia mandates that a man who has had sex with men is deferred from donation until 12 months has elapsed since the sexual activity. This review examined whether this deferral period is justified by current evidence. Databases (Medline, EMBASE, Scopus) were searched using terms "blood donation" and "gay" or "MSM" and "HIV risk" from the mid-1980s to the present to investigate the history of donor deferral policy and its rationale in Australia. Gay and bisexual men in Australia face a higher risk of human immunodeficiency virus and other blood-borne viruses (BBVs) than other populations. All blood donations, however, are tested for BBVs, and with current testing technologies the window period during which infection may be present but not detected is now less than 1 week. While there is a moral imperative to maintain blood safety, there is also a moral imperative to ensure that differential treatment of population groups with regard to donation eligibility is scientifically justified. Potential social harms that may flow from a dissonance between deferral policy and its evidence base include loss of trust and increased nonadherence to policy. A 12-month deferral for gay and bisexual men exceeds what is required to maintain blood safety. This disparity potentially causes social harm without any additional benefit to public health. Reducing the deferral period to 3 months will not increase health risk to recipients and may have the social benefit of increasing inclusiveness. © 2017 AABB.
Zou, Shimian; Musavi, Fatemeh; Notari, Edward P; Fujii, Karen E; Dodd, Roger Y
2005-10-01
Health history questions are introduced into the predonation interview to identify blood donors believed to pose a higher risk of infectious diseases to recipients. This study assesses the current impact of some of those questions. Donor deferral and donation data were extracted from a research database of the American Red Cross. The prevalence of hepatitis B surface antigen or antibodies to human immunodeficiency virus, hepatitis C virus, or human T-lymphotropic virus was obtained for different groups of donors who were temporarily deferred in 2000 through 2001 and later returned to donate blood in 2000 through 2003. The results were compared with either first-time or repeat donors in 2000 through 2003, while controlling for differences in sex, age, and year of donation. Of donors temporarily deferred in 2000 through 2001 who had had no donation or deferral during the previous 2 years, only 22.08 percent subsequently returned to donate blood in 2000 through 2003. Donations from returning donors who had been deferred for potential infectious disease risk did not show a higher prevalence for any of the viral markers when those with no donation or deferral during the previous two years were compared with first-time donations, and those with prior donation were compared with repeat donations. Blood donors temporarily deferred in 2000 through 2001 for potential risk of viral infection who later returned to donate blood did not appear to pose a higher risk compared to first-time or repeat donors. The effectiveness of some of the currently used deferral questions in reducing viral risks warrants further study.
Blood center practice and education for blood donors with anemia
Delaney, Meghan; Schellhase, Kenneth G.; Young, Staci; Geiger, Susan; Fink, Arlene; Mast, Alan E.
2013-01-01
BACKGROUND Anemia is an early indicator of many diseases, yet blood donors with low hematocrit (Hct) often receive inadequate information about its medical importance. We sought to understand the types of information that are and should be provided to these donors. STUDY DESIGN AND METHODS Two companion studies were performed. The first investigated blood center practices for care of donors with low Hct including deferral length, information provided, and cutoff values used when referring donors for medical attention. The second was a randomized prospective pilot study comparing behavior of deferred donors receiving an “older” pamphlet providing a list of iron-rich foods or a “newer” pamphlet providing descriptions of common causes of anemia and advice for seeking medical attention. RESULTS More than 70% of centers defer donors for 1 day. Only 6% defer donors for more than 2 weeks. Most centers provide written and/or verbal information about low Hct. Only 35% have a cutoff value defining significant anemia that requires additional medical attention. In the study of donors with low Hct, significant disease was identified within 3 months after deferral in 2 of 104 subjects: metastatic lung cancer and acute lymphocytic leukemia. Only donors receiving the newer pamphlet reported that it “definitely improved” their ability to speak with their doctor about anemia. CONCLUSIONS The diagnosis of anemia in blood donors may be an indicator of significant undiagnosed disease. There are wide variations in how centers care for and educate donors with anemia. Donors with anemia should be provided improved and consistent educational information. PMID:20977487
Germain, Marc; Delage, Gilles; O'Brien, Sheila F; Grégoire, Yves; Fearon, Margaret; Devine, Dana
2017-10-01
The recent spread of the Zika virus to the Americas and the recognition that it can cause severe disease in the developing fetus has prompted the adoption of measures to mitigate the risk that this virus might pose to transfusion safety. In nonendemic countries, the risk to transfusion results from donors traveling to an endemic region. Canada implemented a 21-day temporary deferral for prospective donors who traveled to such regions. We present the rationale for this policy, including a quantitative risk assessment supported by a Monte Carlo simulation. The model considered the following parameters, each with specified values and ranges: the probability that a donor recently returned from a Zika-endemic region, the duration of travel to this region, the daily risk of acquiring Zika while in an endemic region, and the incubation and viremic periods. We ran the simulation 20 times, each with 10 million iterations. In the absence of any travel deferral, 32 donors (range, 20-46 donors) would be able to donate while still being at risk of transmitting Zika, corresponding to a rate of 1:312,500 (range, 1:217,000 to 1:500,000). None of these donors would be viremic beyond 21 days after returning from their travel, with a risk estimated at less than 1:200,000,000. A 21-day temporary travel deferral offers an extremely wide margin of safety for the possible transmission of Zika by a donation obtained from someone who recently returned from a country where the virus is circulating. © 2017 AABB.
Yang, Hong; Huang, Yin; Gregori, Luisa; Asher, David M; Bui, Travis; Forshee, Richard A; Anderson, Steven A
2017-04-01
Variant Creutzfeldt-Jakob disease (vCJD) has been transmitted by blood transfusion (TTvCJD). The US Food and Drug Administration (FDA) recommends deferring blood donors who resided in or traveled to 30 European countries where they may have been exposed to bovine spongiform encephalopathy (BSE) through beef consumption. Those recommendations warrant re-evaluation, because new cases of BSE and vCJD have markedly abated. The FDA developed a risk-ranking model to calculate the geographic vCJD risk using country-specific case rates and person-years of exposure of US blood donors. We used the reported country vCJD case rates, when available, or imputed vCJD case rates from reported BSE and UK beef exports during the risk period. We estimated the risk reduction and donor loss should the deferral be restricted to a few high-risk countries. We also estimated additional risk reduction by leukocyte reduction (LR) of red blood cells (RBCs). The United Kingdom, Ireland, and France had the greatest vCJD risk, contributing approximately 95% of the total risk. The model estimated that deferring US donors who spent extended periods of time in these three countries, combined with currently voluntary LR (95% of RBC units), would reduce the vCJD risk by 89.3%, a reduction similar to that achieved under the current policy (89.8%). Limiting deferrals to exposure in these three countries would potentially allow donations from an additional 100,000 donors who are currently deferred. Our analysis suggests that a deferral option focusing on the three highest risk countries would achieve a level of blood safety similar to that achieved by the current policy. © 2016 AABB.
Changes in the Whole Blood Donor Population in South-West Germany: 2010 versus 2016
Müller-Steinhardt, Michael; Weidmann, Christian; Klüter, Harald
2017-01-01
Background In the recent past, the discrepancy between blood supply and future demand may have been overestimated. As medical progress develops rapidly, it will be essential to monitor ongoing demographic changes in the donor population regularly and to re-evaluate retention and recruiting strategies. The aim of the current study was to compare first-time donor (FTD) characteristics and their return rates. We therefore compared whole blood (WB) donations in total and the annual donation frequencies in 2010 and in 2015/2016. Furthermore, we evaluated whether over the same observation period, medical reasons for deferral underwent a change (2010 vs. 2015). Methods The return probability of FTD within 12 months was analysed in 2010 and 2015 with respect to successful donation versus deferral and with regard to age. The total number of WB donations was investigated, and age distribution was compared between 2010, 2013 and 2016. WB donation frequencies were calculated with respect to age and gender in 2010 and 2016. In a second analysis, medical reasons for deferral were differentiated into 14 categories and a possible impact of time (2010 vs. 2015) on the respective percentage was studied. Results We observed a significant decline of the FTD return rate from 42.5% to 38.8% in donors that successfully donated WB while the rate remained unchanged in deferred FTD. At the same time the mean FTD age decreased from 29.1 ± 11.6 to 28.5 ± 11.7 years in 2016. Analysis of total WB donations revealed an increase of all donations from donors ≥60 years, a constant percentage from donors <30 years but a declining proportion of donors aged 30–59 years from 2010 to 2013 to 2016. In parallel, annual mean WB donation frequencies decreased over time. Deferrals due to travel history increased significantly from 2010 to 2015 both in FTD and repeat donors. Conclusion There is ongoing demographic change in our WB donor population. Our data prove a need for a re-evaluation of retention and recruitment strategies since previous marketing campaigns seem to have neglected the age group 30–59 years. This must be addressed in further studies as this age group will be highly relevant for assuring future blood supplies since donor recruitment from adolescents will be limited due to declining birth rates. Furthermore, deferral due to travel history is increasing significantly. Thus we will require further studies on the possible impact on donor retention. PMID:28924426
Should Men who have sex with Men be allowed to donate blood in Israel?
Ginsberg, Gary Michael; Shinar, Eilat; Kopel, Eran; Chemtob, Daniel
2016-01-01
The present permanent deferral policy in Israel for MSM was established in 1977 and was based on the previous (now outdated) USA Food and Drug Administration standards. This study analyses epidemiological data regarding blood donations among MSM, in order to estimate the risk for HIV transfusion transmitted infection (TTI) if the policy is changed to allow at-risk MSM to donate blood. An Excel based spreadsheet model integrated demographic, epidemiological data from the HIV National Register, laboratory, blood donation and testing data in order to calculate TTI due to false-negatives in known HIV+ donors, windows period donations, asymptomatic carriers and laboratory misclassification errors. A sensitivity analysis of our estimated TTIs for deferral periods for MSM was performed based on a literature review regarding this overall policy issue worldwide. MSM in Israel have a considerably higher relative risk (RR) of both prevalence (115) and incidence (143) of being HIV+ than persons without a risk factor. Allowing MSM to donate blood, without any deferral period, will add an additional five HIV TTI cases over the next decade. Imposition of a 1 or 5 years deferral of abstinence will increase the number of HIV TTI cases only by 0.10 and 0.05 cases, respectively. A 1 year deferral period for blood donations from MSM in Israel is recommended.
Behr-Gross, M-E; Heiden, M; Norda, R
2013-05-01
In November 2009, the Council of Europe's Blood Transfusion Steering Committee created a group of experts to explore the problem of behaviors having an impact on the management of donors of blood and blood components and on blood transfusion safety in Europe. This ad hoc group sought a harmonised interpretation of temporary exclusion (or temporary deferral), as opposed to permanent exclusion (or permanent deferral), in the context of the selection of donors of blood and blood components. It was also given the mandate to assess, on the basis of available data, the possibility of differentiating "at risk" behaviours from behaviours "at high risk" of contamination by serious infectious diseases transmitted by blood, blood components or derived therapeutic products. The primary objective of this work was to ensure the safety of blood, blood components and derived therapeutic products for future recipients by promoting a risk analysis-based approach, given that some countries envisaged amending their provisions for donor selection. However, a risk analysis can only be performed on groups, not individuals, which may give the impression of a discriminatory approach, so it needed to be justified in the context of transfusion safety. A collaborative project, which included an investigation phase, led to the drafting of a technical memorandum that summarised the data collected in ten Council of Europe member states on the selection criteria for blood donors and the epidemiology of infectious diseases (with a focus on human immunodeficiency virus) in the general population and among blood donors. The technical memorandum was published in 2011 on the European Directorate for the Quality of Medicines and Healthcare website dedicated to this project. A draft resolution of the Committee of Ministers of the Council of Europe was then developed by the Council of Europe's Blood Transfusion Steering Committee. This text was circulated among member and observer states of the Council of Europe for review and comments. Copyright © 2013 Elsevier Masson SAS. All rights reserved.
Three decades of MSM donor deferral policies. What have we learned?
Wilson, Kumanan; Atkinson, Katherine; Keelan, Jennifer
2014-01-01
In the early 1980s, donor deferrals targeting men who have sex with men (MSM) and other high-risk groups were implemented in response to the outbreak of HIV/AIDS. It has now been three decades since the implementation of these deferrals. We review the international experience with developing these policies, which involves combining scientific evidence with ethical and moral concerns and the challenge of moving from precautionary to risk management policies as scientific knowledge and technology evolves. We provide key lessons that can guide blood policymakers as they confront potential new threats to the safety of the blood system and also provide lessons to the wider public health community on how best to incorporate precaution into the policymaking process. Copyright © 2013 The Authors. Published by Elsevier Ltd.. All rights reserved.
Federal Register 2010, 2011, 2012, 2013, 2014
2013-08-19
..., Reentry, and Product Management To Reduce the Risk of Transfusion-Transmitted Malaria; Availability AGENCY... Questioning, Deferral, Reentry and Product Management to Reduce the Risk of Transfusion-Transmitted Malaria... their reentry, and product management to reduce the risk of transfusion-transmitted malaria. This...
Iron deficiency in blood donors: the REDS-II Donor Iron Status Evaluation (RISE) study.
Cable, Ritchard G; Glynn, Simone A; Kiss, Joseph E; Mast, Alan E; Steele, Whitney R; Murphy, Edward L; Wright, David J; Sacher, Ronald A; Gottschall, Jerry L; Tobler, Leslie H; Simon, Toby L
2012-04-01
Blood donors are at risk of iron deficiency. We evaluated the effects of blood donation intensity on iron and hemoglobin (Hb) in a prospective study. Four cohorts of frequent and first-time or reactivated (FT/RA) blood donors (no donation in 2 years), female and male, totaling 2425, were characterized and followed as they donated blood frequently. At enrollment and the final visit, ferritin, soluble transferrin receptor (sTfR), and Hb were determined. Models to predict iron deficiency and Hb deferral were developed. Iron depletion was defined at two levels: iron deficiency erythropoiesis (IDE) [log(sTfR/ferritin) ≥ 2.07] and absent iron stores (AIS; ferritin < 12 ng/mL). Among returning female FT and RA donors, 20 and 51% had AIS and IDE at their final visit, respectively; corresponding proportions for males were 8 and 20%. Among female frequent donors who returned, 27 and 62% had AIS and IDE, respectively, while corresponding proportions for males were 18 and 47%. Predictors of IDE and/or AIS included a higher frequency of blood donation in the past 2 years, a shorter interdonation interval, and being female and young; conversely, taking iron supplements reduced the risk of iron depletion. Predictors of Hb deferral included female sex, black race, and a shorter interdonation interval. There is a high prevalence of iron depletion in frequent blood donors. Increasing the interdonation interval would reduce the prevalence of iron depletion and Hb deferral. Alternatively, replacement with iron supplements may allow frequent donation without the adverse outcome of iron depletion. © 2011 American Association of Blood Banks.
Belanger, Geoffrey A; McFarland, Willi; Raymond, H Fisher; Custer, Brian
2013-11-01
The deferral of men who have sex with men (MSM) from blood donation is controversial worldwide, with national policies varying from no explicit deferral to permanent deferral. This study assesses whether MSM have donated and would be interested in donating if the US exclusion policy were removed and who would be eligible to donate if the policy were modified to a temporary or lower-risk deferral criterion. Questions about previous blood donation and interest in future donation were added to the National HIV Behavioral Surveillance survey questionnaire, which periodically gathers risk behavior information from MSM in San Francisco. Overall, 77.3% of 475 MSM respondents expressed interest in donating. By lower-risk criteria, 10.1% had no sexual contact in the past 6 months (2.3% in the past 12 months) and 1.9% had only lower-risk sexual contact in the past 6 months (1.5% in the past 12 months). Of the 23.4% who answered yes to having donated in the past, at least 25.2% did not comply with the current deferral of no male-male sex since 1977. The majority of MSM are interested in donating blood. Depending on how the policy would be changed (i.e., either a temporary or a behavior-based deferral criterion), substantial numbers of MSM would be eligible. © 2013 American Association of Blood Banks.
Prados Madrona, Dalmiro; Fernández Herrera, María Dolores; Prados Jiménez, Dalmiro; Gómez Giraldo, Sonsoles; Robles Campos, Rita
2014-01-01
Women seem more willing to donate blood than men despite the limitations that affect their donation rate. The aim of our study was to determine the role of women in altruistic donation of blood in Huelva, a province in south-western Spain. We registered 87,601 offers to donate whole blood between January 1st, 2005 and December 31st, 2009. We statistically analysed variables such as sex, age, offers, deferrals and donations, problems in venous access, vasovagal reactions, weight and blood pressure to establish their significance according to donor gender. With regards to gender, 52.3% of donors were women and 47.7% men. Of the 87,601 offers to donate blood, 46.5% were from females and 53.5% from males. More females than males made their first donation during the study period. However, 43.9 % of donations were from women, whereas 56.1% were from men. Overall 8.7% of offers were deferred, 62.7% of which due to a low haemoglobin concentration, which was the most frequent cause of deferral in women. Difficulties in venous access and vasovagal reactions were also more frequent in female donors than in male donors. By the end of the study period, donor fidelity was 58.6% for men and 48.6% for women. In the province of Huelva, women are more altruistically inclined than men to give blood, with the percentages of donors and first-time donors being higher among females. However, there are restrictions to women giving blood, especially low haemoglobin concentration, which reduce the number of female blood donations. Women also have more difficulty when blood is withdrawn and are more susceptible to vasovagal reactions, which negatively affect their experience as donors. Measures should be taken to reduce these barriers to encourage women to continue to offer to donate blood, thereby ensuring that they become regular donors, which is a key factor in guaranteeing an adequate supply of blood within the region of Andalusia.
De Buck, Emmy; Dieltjens, Tessa; Compernolle, Veerle; Vandekerckhove, Philippe
2015-01-01
Although increased prevalence of transfusion transmissible infections (TTI) among "men who have sex with men" (MSM) has been well documented, the exclusion of MSM as blood donors is contested. The aim of this systematic review is to find studies that describe the risk of TTI in MSM blood donors. We searched MEDLINE, Embase, The Cochrane Central Register of Controlled Trials, Cinahl, and Web of Science, and used GRADE for determining evidence quality. We included studies comparing MSM and non-MSM blood donors (or people eligible to give blood), living in areas most relevant for our Blood Service. Out of 18 987 articles, 14 observational studies were included. Two studies directly compared MSM with non-MSM donors showing that MSM donors have a statistically significant higher risk of HIV-1 infections. In one of these studies it was shown that this was related to recent (< 12 months) MSM contact. In two additional studies no evidence was shown in favour of a certain deferral period for MSM. Ten studies, applying permanent deferral for MSM, compared infected versus non-infected donors. One study found that MSM is a statistically significant risk factor for HIV-1 infection in blood donors. For other TTI such as HBV or HCV, an increased risk of infection could not be demonstrated, because the precision of the results was affected by the low numbers of donors with MSM as risk factor, or because of risk of bias in the included studies. All studies included low level evidence, because of risk of bias and imprecision of the results. High-quality studies investigating the risk of TTI in MSM who donate blood are scarce. The available evidence suggests a link between MSM blood donors and HIV-1 infection, but is too limited to be able to unambiguously/clearly recommend a certain deferral policy.
De Buck, Emmy; Dieltjens, Tessa; Compernolle, Veerle; Vandekerckhove, Philippe
2015-01-01
Background Although increased prevalence of transfusion transmissible infections (TTI) among “men who have sex with men” (MSM) has been well documented, the exclusion of MSM as blood donors is contested. The aim of this systematic review is to find studies that describe the risk of TTI in MSM blood donors. Methods We searched MEDLINE, Embase, The Cochrane Central Register of Controlled Trials, Cinahl, and Web of Science, and used GRADE for determining evidence quality. We included studies comparing MSM and non-MSM blood donors (or people eligible to give blood), living in areas most relevant for our Blood Service. Results Out of 18 987 articles, 14 observational studies were included. Two studies directly compared MSM with non-MSM donors showing that MSM donors have a statistically significant higher risk of HIV-1 infections. In one of these studies it was shown that this was related to recent (< 12 months) MSM contact. In two additional studies no evidence was shown in favour of a certain deferral period for MSM. Ten studies, applying permanent deferral for MSM, compared infected versus non-infected donors. One study found that MSM is a statistically significant risk factor for HIV-1 infection in blood donors. For other TTI such as HBV or HCV, an increased risk of infection could not be demonstrated, because the precision of the results was affected by the low numbers of donors with MSM as risk factor, or because of risk of bias in the included studies. All studies included low level evidence, because of risk of bias and imprecision of the results. Conclusions High-quality studies investigating the risk of TTI in MSM who donate blood are scarce. The available evidence suggests a link between MSM blood donors and HIV-1 infection, but is too limited to be able to unambiguously/clearly recommend a certain deferral policy. PMID:25875812
A systematic review and meta-analysis of antecedents of blood donation behavior and intentions.
Bednall, Timothy C; Bove, Liliana L; Cheetham, Ali; Murray, Andrea L
2013-11-01
This meta-analysis sought to identify the strongest antecedents of blood donation behavior and intentions. It synthesized the results of 24 predictive correlational studies of donation behavior and 37 studies of donation intentions. The antecedents were grouped into six research programs: (1) the Theory of Planned Behavior (TPB) and its extensions, (2) prosocial motivation, (3) affective expectations, (4) donor site experience, (5) past donation behavior, and (6) donor demographics. Antecedent categories were cross-validated by multiple coders, and combined effect sizes were analyzed using a random-effects model. For donation behavior, medium positive associations were found with five of the constructs from the extended TPB: intentions to donate, perceived behavioral control, attitude toward donation, self-efficacy and donor role identity. Other antecedents displaying a positive association with donation behavior included anticipated regret for not donating, number of past donations and donor age. Donor experiences at the collection site in the form of temporary deferral or adverse reactions had a medium negative association with behavior. For donation intentions, strong positive associations were observed for perceived behavioral control, attitude, self-efficacy, role identity and anticipated regret. Medium positive associations were observed for personal moral norm, subjective norm, satisfaction, and service quality. All other potential antecedents had weak or non-significant associations with behavior and intentions. Several of these associations were moderated by between-study differences, including donor experience, the period of data collection in which donation behavior was observed, and the use of a nominal (yes/no return) versus a ratio measure of donation behavior. Collectively, the results underscore the importance of enhancing donors' attitudes towards donation and building their perceived behavioral control and self-efficacy to donate. Further, minimizing the risk of adverse reactions and enacting re-recruitment policies for temporarily deferred donors will help protect future donation behavior. Implications of these findings for blood collection agencies and researchers are discussed. Copyright © 2013 Elsevier Ltd. All rights reserved.
Federal Register 2010, 2011, 2012, 2013, 2014
2012-07-06
... scientific workshop. In addition, FDA is aware that dengue viruses are endemic in Quintana Roo and Jalisco. FDA is currently evaluating the risk of dengue virus infections in U.S. blood donors that are acquired...
21 CFR 610.41 - Donor deferral.
Code of Federal Regulations, 2012 CFR
2012-04-01
... §§ 610.46 and 610.47 when a donor tests reactive by a screening test for HIV or HCV required under § 610... evidence of HIV or HCV infection. [66 FR 31164, June 11, 2001, as amended at 72 FR 48798, Aug. 24, 2007] ...
21 CFR 610.41 - Donor deferral.
Code of Federal Regulations, 2014 CFR
2014-04-01
... §§ 610.46 and 610.47 when a donor tests reactive by a screening test for HIV or HCV required under § 610... evidence of HIV or HCV infection. [66 FR 31164, June 11, 2001, as amended at 72 FR 48798, Aug. 24, 2007] ...
21 CFR 610.41 - Donor deferral.
Code of Federal Regulations, 2011 CFR
2011-04-01
... §§ 610.46 and 610.47 when a donor tests reactive by a screening test for HIV or HCV required under § 610... evidence of HIV or HCV infection. [66 FR 31164, June 11, 2001, as amended at 72 FR 48798, Aug. 24, 2007] ...
21 CFR 610.41 - Donor deferral.
Code of Federal Regulations, 2013 CFR
2013-04-01
... §§ 610.46 and 610.47 when a donor tests reactive by a screening test for HIV or HCV required under § 610... evidence of HIV or HCV infection. [66 FR 31164, June 11, 2001, as amended at 72 FR 48798, Aug. 24, 2007] ...
Vamvakas, Eleftherios C
2011-01-01
The risks of known and emerging transfusion-transmitted infections (TTIs) from reducing the current lifetime blood donation deferral for men who have had sex with men (MSM) to 1 or 5 years were compared to the risk from continuing to transfuse in the United States 12.5% of platelet doses as pooled whole-blood-derived (rather than single-donor) platelets. Assumptions made in mathematical models and blood donor/transfusion studies of the risks of TTIs since 2000 were evaluated. The number of HIV, hepatitis B virus, or hepatitis C virus TTIs from reducing the MSM deferral to 1 year is, respectively, 0.88, 2.94, or 66.9, many more than 10 times smaller than the risk from pooled platelets. If erroneous release of HIV-positive units (a risk independent of a donor's source of infection) is not considered, the MSM risk is 1 HIV-infectious donation per 17 to 56 million MSM donations. Any purportedly increased risk of human herpesvirus-8 transmission from MSM donors is far smaller than the risk of transfusion-associated sepsis from pooled platelets. Single-donor platelets from MSM after 5 years' abstinence are as safe or 5 times safer than our current pooled platelets--if the next TTI to emerge were transmitted, respectively, sexually or by another route. Thus, acceptance of MSM as blood donors after 1 or 5 years' abstinence may result in a postulated increase in risk that is so much smaller than the currently tolerated transfusion risk and so small in absolute terms that the ethical question of fairness to the MSM group justifies the change in policy. Copyright © 2011 Elsevier Inc. All rights reserved.
Characteristics of donors who do or do not return to give blood and barriers to their return
Wevers, Anne; Wigboldus, Daniël H.J.; de Kort, Wim L.A.M.; van Baaren, Rick; Veldhuizen, Ingrid J.T.
2014-01-01
Background In the Netherlands about 50% of whole blood donors return to give blood after an invitation to donate. This study aimed to investigate the characteristics of donor return behaviour and to gain insight into the barriers to blood donation reported by the donors themselves. Materials and methods A total of 4,901 whole blood donors were invited to donate in week 39 of 2009. Barriers mentioned by donors who informed the blood bank for not donating were registered for 1 month. Logistic regression analyses assessed relevant characteristics of return behaviour, such as age and blood type, in men and women separately. Results Of the invited donors, 55% returned to give a donation, whereas 45% did not return. Male donors were more likely to return when they were older, had a higher previous return rate and had no past deferrals. The same pattern was found among women, but was less strong. The main barriers were: time constraints (35%), preference to postpone donation due to general physical problems although being eligible to donate (29%), and being ineligible to donate due to medical deferral criteria (9%). Discussion Specific donor characteristics are associated with return behaviour. Not donating due to time constraints could mean that donors do not feel the urgency of donating blood. Interventions targeted to increase commitment among specific donor groups should be tested further. PMID:23522891
Characteristics of donors who do or do not return to give blood and barriers to their return.
Wevers, Anne; Wigboldus, Daniël H J; de Kort, Wim L A M; van Baaren, Rick; Veldhuizen, Ingrid J T
2014-01-01
In the Netherlands about 50% of whole blood donors return to give blood after an invitation to donate. This study aimed to investigate the characteristics of donor return behaviour and to gain insight into the barriers to blood donation reported by the donors themselves. A total of 4,901 whole blood donors were invited to donate in week 39 of 2009. Barriers mentioned by donors who informed the blood bank for not donating were registered for 1 month. Logistic regression analyses assessed relevant characteristics of return behaviour, such as age and blood type, in men and women separately. Of the invited donors, 55% returned to give a donation, whereas 45% did not return. Male donors were more likely to return when they were older, had a higher previous return rate and had no past deferrals. The same pattern was found among women, but was less strong. The main barriers were: time constraints (35%), preference to postpone donation due to general physical problems although being eligible to donate (29%), and being ineligible to donate due to medical deferral criteria (9%). Specific donor characteristics are associated with return behaviour. Not donating due to time constraints could mean that donors do not feel the urgency of donating blood. Interventions targeted to increase commitment among specific donor groups should be tested further.
Madrona, Dalmiro Prados; Herrera, María Dolores Fernández; Jiménez, Dalmiro Prados; Giraldo, Sonsoles Gómez; Campos, Rita Robles
2014-01-01
Background Women seem more willing to donate blood than men despite the limitations that affect their donation rate. The aim of our study was to determine the role of women in altruistic donation of blood in Huelva, a province in south-western Spain. Materials and methods We registered 87,601 offers to donate whole blood between January 1st, 2005 and December 31st, 2009. We statistically analysed variables such as sex, age, offers, deferrals and donations, problems in venous access, vasovagal reactions, weight and blood pressure to establish their significance according to donor gender. Results With regards to gender, 52.3% of donors were women and 47.7% men. Of the 87,601 offers to donate blood, 46.5% were from females and 53.5% from males. More females than males made their first donation during the study period. However, 43.9 % of donations were from women, whereas 56.1% were from men. Overall 8.7% of offers were deferred, 62.7% of which due to a low haemoglobin concentration, which was the most frequent cause of deferral in women. Difficulties in venous access and vasovagal reactions were also more frequent in female donors than in male donors. By the end of the study period, donor fidelity was 58.6% for men and 48.6% for women. Discussion In the province of Huelva, women are more altruistically inclined than men to give blood, with the percentages of donors and first-time donors being higher among females. However, there are restrictions to women giving blood, especially low haemoglobin concentration, which reduce the number of female blood donations. Women also have more difficulty when blood is withdrawn and are more susceptible to vasovagal reactions, which negatively affect their experience as donors. Measures should be taken to reduce these barriers to encourage women to continue to offer to donate blood, thereby ensuring that they become regular donors, which is a key factor in guaranteeing an adequate supply of blood within the region of Andalusia. PMID:23245721
Iron balance in the red blood cell donor.
Brittenham, G M
2005-01-01
Phlebotomy of a unit of blood produces a loss of 200 to 250 mg of iron in haemoglobin. Because of physiological differences in iron balance between women of childbearing age and men, the loss of similar amounts of iron at donation has divergent consequences for committed donors. Women of childbearing age have an increased risk of iron deficiency if they donate more than one unit per year while men are usually able to maintain iron balance while donating four or more units of blood per year. Lack of iron is the most important medical reason for deferral from repeat donation and primarily affects women of childbearing age. Deferral of these women discourages them from further donation and may lead to their loss as donors. Provisions for blood donation should protect those who give blood from adverse consequences of their altruism. Safe and effective approaches to iron replacement after donation have been developed that can prevent iron deficiency in women who give blood repeatedly. Blood centres should consider incorporating programmes of iron replacement for women of childbearing age who give blood repeatedly to protect these donors against iron deficiency and to enhance their retention and commitment as dedicated donors.
Kleinman, Steven; King, Melissa R; Busch, Michael P; Murphy, Edward L; Glynn, Simone A.
2012-01-01
The Retrovirus Epidemiology Donor Study (REDS), conducted from 1989–2001, and the Retrovirus Epidemiology Donor Study-II (REDS-II), conducted from 2004–2012, were National Heart Lung and Blood Institute (NHLBI) funded multicenter programs focused on improving blood safety and availability in the United States. REDS-II also included international study sites in Brazil and China. The three major research domains of REDS/REDS-II have been infectious disease risk evaluation, blood donation availability, and blood donor characterization. Both programs have made significant contributions to transfusion medicine research methodology by the use of mathematical modeling, large-scale donor surveys, innovative methods of repository sample storage, and establishing an infrastructure that responded to potential emerging blood safety threats such as XMRV. Blood safety studies have included protocols evaluating epidemiologic and/or laboratory aspects of HIV, HTLV I/II, HCV, HBV, WNV, CMV, HHV-8, B19V, malaria, CJD, influenza, and T. cruzi infections. Other analyses have characterized: blood donor demographics, motivations to donate, factors influencing donor return, behavioral risk factors, donors’ perception of the blood donation screening process, and aspects of donor deferral. In REDS-II, two large-scale blood donor protocols examined iron deficiency in donors and the prevalence of leukocyte antibodies. This review describes the major study results from over 150 peer-reviewed articles published by these two REDS programs. In 2011, a new seven year program, the Recipient Epidemiology and Donor Evaluation Study-III (REDS-III), was launched. REDS-III expands beyond donor-based research to include studies of blood transfusion recipients in the hospital setting, and adds a third country, South Africa, to the international program. PMID:22633182
Smith, Graham A; Fisher, Sheila A; Doree, Carolyn; Di Angelantonio, Emanuele; Roberts, David J
2014-07-03
Iron deficiency is a significant cause of deferral in people wishing to donate blood. If iron removed from the body through blood donation is not replaced, then donors may become iron deficient. All donors are screened at each visit for low haemoglobin (Hb) levels. However, some deferred blood donors do not return to donate. Deferred first-time donors are even less likely to return. Interventions that reduce the risk of provoking iron deficiency and anaemia in blood donors will therefore increase the number of blood donations. Currently, iron supplementation for blood donors is not a standard of care in many blood services. A systematic review is required to answer specific questions regarding the efficacy and safety of iron supplementation in blood donors. To assess the efficacy and safety of iron supplementation to reduce deferral, iron deficiency and/or anaemia in blood donors. We ran the search on 18 November 2013. We searched Cochrane Injuries Group Specialised Register, CENTRAL, PubMed, MEDLINE (OvidSP), EMBASE (OvidSP), CINAHL (EBSCO Host) and six other databases. We also searched clinical trials registers and screened guidelines reference lists. Randomised controlled trials (RCTs) comparing iron supplementation versus placebo or control, oral versus parenteral iron supplementation, iron supplementation versus iron-rich food supplements, and different doses, treatment durations and preparations of iron supplementation in healthy blood donors. Autologous blood donors were excluded. We combined data using random-effects meta-analyses. We evaluated heterogeneity using the I(2) statistic; we explored considerable heterogeneity (I(2) > 75%) in subgroup analyses. We carried out sensitivity analyses to assess the impact of trial quality on the results. Thirty RCTs (4704 participants) met the eligibility criteria, including 19 comparisons of iron supplementation and placebo or control; one comparison of oral and parenteral iron supplementation; four comparisons of different doses of iron supplementation; one comparison of different treatment durations of iron supplementation; and 12 comparisons of different iron supplementation preparations.Many studies were of low or uncertain methodological quality and therefore at high or uncertain risk of bias. We therefore rated the quality of the evidence for our outcomes as moderate. There was a statistically significant reduction in deferral due to low haemoglobin in donors who received iron supplementation compared with donors who received no iron supplementation, both at the first donation visit after commencement of iron supplementation (risk ratio (RR) 0.34; 95% confidence interval (CI) 0.21 to 0.55; four studies; 1194 participants; P value < 0.0001) and at subsequent donations (RR 0.25; 95% CI 0.15 to 0.41; three studies; 793 participants; P value < 0.00001). Supplementation also resulted in significantly higher haemoglobin levels (mean difference (MD) 2.36 g/L; 95% CI 0.06 to 4.66; eight studies; 847 participants, P value =0.04), and iron stores, including serum ferritin (MD 13.98 ng/mL; 95% CI 8.92 to 19.03; five studies; 640 participants; P value < 0.00001) and transferrin saturation (MD 3.91%; 95% CI 2.02 to 5.80; four studies; 344 participants; P value < 0.0001) prior to further donation. The differences were maintained after subsequent donation(s).Adverse effects were widely reported and were more frequent in donors who received iron supplementation (RR 1.60; 95% CI 1.23 to 2.07; four studies; 1748 participants; P value = 0.0005). Adverse effects included constipation, diarrhoea, nausea, vomiting and taste disturbances, and some participants stopped treatment due to side effects. There is moderate quality evidence that rates of donor deferral due to low haemoglobin are considerably less in those taking iron supplements compared with those without iron supplementation, both at the first donation visit and at subsequent donation. Iron-supplemented donors also show elevated haemoglobin and iron stores. These beneficial effects are balanced by more frequent adverse events in donors who receive iron supplementation than in those who do not; this is likely to limit acceptability and compliance. The long-term effects of iron supplementation without measurement of iron stores are unknown. These considerations are likely to preclude widespread use of iron supplementation by tablets. Blood services may consider targeted use of supplementation in those at greatest risk of iron deficiency, personalised donation intervals and providing dietary advice.
Piersma, Tjeerd W.; Bekkers, René; Klinkenberg, Elisabeth F.; de Kort, Wim L.A.M.; Merz, Eva-Maria
2017-01-01
Background The ageing population and recent migration flows may negatively affect the blood supply in the long term, increasing the importance of targeted recruitment and retention strategies to address donors. This review sought to identify individual, network and contextual characteristics related to blood donor status and behaviour, to systematically discuss differences between study results, and to identify possible factors to target in recruitment and retention efforts. Methods The systematic review was conducted in accordance with a predefined PROSPERO protocol (CRD42016039591). After quality assessments by multiple independent raters, a final set of 66 peer-reviewed papers, published between October 2009 and January 2017, were included for review. Results Individual and contextual characteristics of blood donor status and behaviour were categorised into five main lines of research: donor demographics, motivations and barriers, adverse reactions and deferral, contextual factors, and blood centre factors. Results on donor demographics, motivations and barriers, and contextual factors were inconclusive, differing between studies, countries, and sample characteristics. Adverse reactions and deferral were negatively related to blood donor behaviour. Blood centre factors play an important role in donor management, e.g., providing information, reminders, and (non-)monetary rewards. No studies were found on network characteristics of (non-)donors. Discussion Although individual and contextual characteristics strongly relate to blood donor status and behaviour, mechanisms underlying these relations have not been studied sufficiently. We want to stress the importance of longitudinal studies in donor behaviour, exploring the role of life events and network characteristics within blood donor careers. Increased understanding of donor behaviour will assist policy makers of blood collection agencies, with the ultimate goal of safeguarding a sufficient and matching blood supply. PMID:28686151
Piersma, Tjeerd W; Bekkers, René; Klinkenberg, Elisabeth F; De Kort, Wim L A M; Merz, Eva-Maria
2017-09-01
The ageing population and recent migration flows may negatively affect the blood supply in the long term, increasing the importance of targeted recruitment and retention strategies to address donors. This review sought to identify individual, network and contextual characteristics related to blood donor status and behaviour, to systematically discuss differences between study results, and to identify possible factors to target in recruitment and retention efforts. The systematic review was conducted in accordance with a predefined PROSPERO protocol (CRD42016039591). After quality assessments by multiple independent raters, a final set of 66 peer-reviewed papers, published between October 2009 and January 2017, were included for review. Individual and contextual characteristics of blood donor status and behaviour were categorised into five main lines of research: donor demographics, motivations and barriers, adverse reactions and deferral, contextual factors, and blood centre factors. Results on donor demographics, motivations and barriers, and contextual factors were inconclusive, differing between studies, countries, and sample characteristics. Adverse reactions and deferral were negatively related to blood donor behaviour. Blood centre factors play an important role in donor management, e.g., providing information, reminders, and (non-)monetary rewards. No studies were found on network characteristics of (non-)donors. Although individual and contextual characteristics strongly relate to blood donor status and behaviour, mechanisms underlying these relations have not been studied sufficiently. We want to stress the importance of longitudinal studies in donor behaviour, exploring the role of life events and network characteristics within blood donor careers. Increased understanding of donor behaviour will assist policy makers of blood collection agencies, with the ultimate goal of safeguarding a sufficient and matching blood supply.
Waller, Daniel; Thijsen, Amanda; Garradd, Allira; Hayman, Jane; Smith, Geoff
2017-01-01
Each year, a large number of individuals in Australia are deferred from donating blood. A deferral may have a negative impact on donor satisfaction and subsequent word-of-mouth communication. The Australian Red Cross Blood Service (the Blood Service) is, therefore, investigating options for managing service interactions with deferred donors to maintain positive relationships. While public research institutes in Australia have established independent research donor registries, other countries provide programmes allowing deferred donors to donate blood for research via blood collection agencies. This study examined attitudes towards donating blood for research use in a sample of permanently deferred Australian donors. Donors permanently deferred because of a risk of variant Creutzfeldt-Jakob disease (n=449) completed a postal survey that examined attitudes towards research donation. The majority of participants were interested in donating blood for research (96%), and joining a registry of research donors (93%). Participants preferred to donate for transfusion or clinical research, and were willing to travel large distances. Results indicated that positive attitudes towards the Blood Service would be extended if the opportunity to donate blood was provided. These findings indicate a desire for continued engagement with the Blood Service despite deferral. Donating blood for research is a potential way of maintaining positive relationships with permanently deferred donors which also benefits the health research community. Through maintaining positive relationships with deferred donors, positive word-of-mouth activity can be stimulated. Further work is needed to determine the feasibility of implementing research donation through the Blood Service in Australia.
Waller, Daniel; Thijsen, Amanda; Garradd, Allira; Hayman, Jane; Smith, Geoff
2017-01-01
Background Each year, a large number of individuals in Australia are deferred from donating blood. A deferral may have a negative impact on donor satisfaction and subsequent word-of-mouth communication. The Australian Red Cross Blood Service (the Blood Service) is, therefore, investigating options for managing service interactions with deferred donors to maintain positive relationships. While public research institutes in Australia have established independent research donor registries, other countries provide programmes allowing deferred donors to donate blood for research via blood collection agencies. This study examined attitudes towards donating blood for research use in a sample of permanently deferred Australian donors. Materials and methods Donors permanently deferred because of a risk of variant Creutzfeldt-Jakob disease (n=449) completed a postal survey that examined attitudes towards research donation. Results The majority of participants were interested in donating blood for research (96%), and joining a registry of research donors (93%). Participants preferred to donate for transfusion or clinical research, and were willing to travel large distances. Results indicated that positive attitudes towards the Blood Service would be extended if the opportunity to donate blood was provided. These findings indicate a desire for continued engagement with the Blood Service despite deferral. Discussion Donating blood for research is a potential way of maintaining positive relationships with permanently deferred donors which also benefits the health research community. Through maintaining positive relationships with deferred donors, positive word-of-mouth activity can be stimulated. Further work is needed to determine the feasibility of implementing research donation through the Blood Service in Australia. PMID:26674813
Schink, Susanne B.; Offergeld, Ruth; Schmidt, Axel J.; Marcus, Ulrich
2018-01-01
Background The predominant mode of transmission of human immunodeficiency virus (HIV) in Europe is male-to-male transmission. Men who have sex with men (MSM) are deferred from donating blood in many countries, but nevertheless do donate blood. Based on data from 34 countries, we estimated the proportion of MSM screened for HIV in the context of a blood donation and identified individual factors associated with this HIV screening in order to propose possible public health interventions. Materials and methods In 2010, the first European MSM Internet Survey (EMIS) collected self-reported data on HIV testing from >180,000 MSM in 38 European countries. Using logistic regression, demographic and behavioural factors associated with screening for HIV in blood establishments were identified. Stratified by European sub-region, we analysed the proportion of MSM screening in blood establishments by time elapsed since last negative HIV test. Results Donor eligibility criteria for MSM vary across Europe with most countries using permanent deferral. The Western region had the lowest (2%) proportion of MSM screened in blood establishments and the Northeastern region had the highest (14%). Being <25 years old, not disclosing sexual attraction to men, never having had anal intercourse with a man, having a female partner, living in a rural area, and certain European sub-regions or countries of residence increased the likelihood of being screened in blood establishments. Discussion In spite of deferral policies, MSM are screened for HIV in the context of blood donations. Gay-friendly testing services are rare in rural areas, and young men might be reluctant to disclose their sexual orientation. Recent developments, such as home sampling, might offer new testing possibilities for those not reached by established services yet wishing to know their HIV status. Donor selection procedures should be improved. Both interventions might help to further reduce the risk of transfusion-transmitted infections. PMID:28488974
21 CFR 610.41 - Donor deferral.
Code of Federal Regulations, 2010 CFR
2010-04-01
... infection due to hepatitis B surface antigen (HBsAg) when previously tested under § 610.40(a), (b), and (e) subsequently may donate Source Plasma for use in the preparation of Hepatitis B Immune Globulin (Human...
Rios, Jorge A; Schlumpf, Karen S; Kakaiya, Ram M; Triulzi, Darrell J; Roback, John D; Kleinman, Steve H; Murphy, Edward L; Gottschall, Jerome L; Carey, Patricia M
2011-06-01
Transfusion-related acute lung injury (TRALI) mitigation strategies include the deferral of female donors from apheresis platelet (PLT) donations and the distribution of plasma for transfusion from male donors only. We studied the implications of these policies in terms of component loss at six blood centers in the United States. We collected data from allogeneic blood donors making whole blood and blood component donations during calendar years 2006 through 2008. We analyzed the distribution of donations in terms of the sex, transfusion and pregnancy histories, and blood type. A TRALI mitigation policy that would not allow plasma from female whole blood donors to be prepared into transfusable plasma components would result in nearly a 50% reduction in the units of whole blood available for plasma manufacturing and would decrease the number of type AB plasma units that could be made from whole blood donations by the same amount. Deferral of all female apheresis PLT donors, all female apheresis PLT donors with histories of prior pregnancies, or all female apheresis PLT donors with histories of prior pregnancies and positive screening test results for antibodies to human leukocyte antigens (HLAs) will result in a loss of 37.1, 22.5, and 5.4% of all apheresis PLT donations, respectively. A TRALI mitigation policy that only defers female apheresis PLT donors with previous pregnancies and HLAs would result in an approximately 5% decrease in the inventory of apheresis PLTs, but would eliminate a large proportion of components that are associated with TRALI. © 2010 American Association of Blood Banks.
Analyzing actual risk in malaria-deferred donors through selective serologic testing.
Nguyen, Megan L; Goff, Tami; Gibble, Joan; Steele, Whitney R; Leiby, David A
2013-08-01
Approximately 150,000 US blood donors are deferred annually for travel to malaria-endemic areas. However, the majority do not travel to the high-risk areas of Africa associated with transfusion-transmitted malaria (TTM) but visit low-risk areas such as Mexico. This study tests for Plasmodium infection among malaria-deferred donors, particularly those visiting Mexico. Blood donors deferred for malaria risk (travel, residence, or previous infection) provided blood samples and completed a questionnaire. Plasma was tested for Plasmodium antibodies by enzyme immunoassay (EIA); repeat-reactive (RR) samples were considered positive and tested by real-time polymerase chain reaction (PCR). Accepted donors provided background testing data. During 2005 to 2011, a total of 5610 malaria-deferred donors were tested by EIA, including 5412 travel deferrals. Overall, 88 (1.6%) were EIA RR; none were PCR positive. Forty-nine (55.7%) RR donors previously had malaria irrespective of deferral category, including 34 deferred for travel. Among 1121 travelers to Mexico, 90% visited Quintana Roo (no or very low risk), but just 2.2% visited Oaxaca/Chiapas (moderate or high risk). Only two Mexican travelers tested RR; both previously had malaria not acquired in Mexico. Travel to Mexico represents a large percentage of US donors deferred for malaria risk; however, these donors primarily visit no- or very-low-risk areas. No malaria cases acquired in Mexico were identified thereby supporting previous risk estimates. Consideration should be given to allowing blood donations from U.S. donors who travel to Quintana Roo and other low-risk areas in Mexico. A more effective approach to preventing TTM would be to defer all donors with a history of malaria, even if remote. © 2012 American Association of Blood Banks.
Kleinman, Steven; King, Melissa R; Busch, Michael P; Murphy, Edward L; Glynn, Simone A
2012-10-01
The Retrovirus Epidemiology Donor Study (REDS), conducted from 1989 to 2001, and the REDS-II, conducted from 2004 to 2012, were National Heart, Lung, and Blood Institute-funded, multicenter programs focused on improving blood safety and availability in the United States. The REDS-II also included international study sites in Brazil and China. The 3 major research domains of REDS/REDS-II have been infectious disease risk evaluation, blood donation availability, and blood donor characterization. Both programs have made significant contributions to transfusion medicine research methodology by the use of mathematical modeling, large-scale donor surveys, innovative methods of repository sample storage, and establishing an infrastructure that responded to potential emerging blood safety threats such as xenotropic murine leukemia virus-related virus. Blood safety studies have included protocols evaluating epidemiologic and/or laboratory aspects of human immunodeficiency virus, human T-lymphotropic virus 1/2, hepatitis C virus, hepatitis B virus, West Nile virus, cytomegalovirus, human herpesvirus 8, parvovirus B19, malaria, Creutzfeldt-Jakob disease, influenza, and Trypanosoma cruzi infections. Other analyses have characterized blood donor demographics, motivations to donate, factors influencing donor return, behavioral risk factors, donors' perception of the blood donation screening process, and aspects of donor deferral. In REDS-II, 2 large-scale blood donor protocols examined iron deficiency in donors and the prevalence of leukocyte antibodies. This review describes the major study results from over 150 peer-reviewed articles published by these 2 REDS programs. In 2011, a new 7-year program, the Recipient Epidemiology and Donor Evaluation Study-III, was launched. The Recipient Epidemiology and Donor Evaluation Study-III expands beyond donor-based research to include studies of blood transfusion recipients in the hospital setting and adds a third country, South Africa, to the international program. Copyright © 2012 Elsevier Inc. All rights reserved.
77 FR 4567 - Blood Products Advisory Committee; Notice of Meeting
Federal Register 2010, 2011, 2012, 2013, 2014
2012-01-30
... appropriate advisory committee hot line/ phone line to learn about possible modifications before coming to the... activities related to the evaluation of the donor deferral policy for men who have had sex with other men...
76 FR 38667 - Transmissible Spongiform Encephalopathies Advisory Committee; Notice of Meeting
Federal Register 2010, 2011, 2012, 2013, 2014
2011-07-01
...: The committee will discuss donor deferral for time spent in Saudi Arabia to reduce the risk of variant Creutzfeldt-Jakob disease (vCJD) by blood and blood products and human cells, tissues and cellular and tissue...
77 FR 20643 - Blood Products Advisory Committee; Notice of Meeting
Federal Register 2010, 2011, 2012, 2013, 2014
2012-04-05
..., you should always check the Agency's Web site and call the appropriate advisory committee hot line... activities related to the evaluation of the donor deferral policy for men who have had sex with other men; a...
Cost-effectiveness of alternative changes to a national blood collection service.
Willis, S; De Corte, K; Cairns, J A; Zia Sadique, M; Hawkins, N; Pennington, M; Cho, G; Roberts, D J; Miflin, G; Grieve, R
2018-05-16
To evaluate the cost-effectiveness of changing opening times, introducing a donor health report and reducing the minimum inter-donation interval for donors attending static centres. Evidence is required about the effect of changes to the blood collection service on costs and the frequency of donation. This study estimated the effect of changes to the blood collection service in England on the annual number of whole-blood donations by current donors. We used donors' responses to a stated preference survey, donor registry data on donation frequency and deferral rates from the INTERVAL trial. Costs measured were those anticipated to differ between strategies. We reported the cost per additional unit of blood collected for each strategy versus current practice. Strategies with a cost per additional unit of whole blood less than £30 (an estimate of the current cost of collection) were judged likely to be cost-effective. In static donor centres, extending opening times to evenings and weekends provided an additional unit of whole blood at a cost of £23 and £29, respectively. Introducing a health report cost £130 per additional unit of blood collected. Although the strategy of reducing the minimum inter-donation interval had the lowest cost per additional unit of blood collected (£10), this increased the rate of deferrals due to low haemoglobin (Hb). The introduction of a donor health report is unlikely to provide a sufficient increase in donation frequency to justify the additional costs. A more cost-effective change is to extend opening hours for blood collection at static centres. © 2018 The Authors. Transfusion Medicine published by John Wiley & Sons Ltd on behalf of British Blood Transfusion Society.
75 FR 55803 - Transmissible Spongiform Encephalopathies Advisory Committee; Notice of Meeting
Federal Register 2010, 2011, 2012, 2013, 2014
2010-09-14
... Creutzfeldt-Jakob disease (vCJD) agent in U.S.-licensed plasma-derived Factor VIII and (2) labeling of blood and blood components and plasma-derived products, including plasma-derived albumin and products..., the Committee will hear informational presentations related to FDA's geographic donor deferral policy...
Analysis of Blood Transfusion Data Using Bivariate Zero-Inflated Poisson Model: A Bayesian Approach.
Mohammadi, Tayeb; Kheiri, Soleiman; Sedehi, Morteza
2016-01-01
Recognizing the factors affecting the number of blood donation and blood deferral has a major impact on blood transfusion. There is a positive correlation between the variables "number of blood donation" and "number of blood deferral": as the number of return for donation increases, so does the number of blood deferral. On the other hand, due to the fact that many donors never return to donate, there is an extra zero frequency for both of the above-mentioned variables. In this study, in order to apply the correlation and to explain the frequency of the excessive zero, the bivariate zero-inflated Poisson regression model was used for joint modeling of the number of blood donation and number of blood deferral. The data was analyzed using the Bayesian approach applying noninformative priors at the presence and absence of covariates. Estimating the parameters of the model, that is, correlation, zero-inflation parameter, and regression coefficients, was done through MCMC simulation. Eventually double-Poisson model, bivariate Poisson model, and bivariate zero-inflated Poisson model were fitted on the data and were compared using the deviance information criteria (DIC). The results showed that the bivariate zero-inflated Poisson regression model fitted the data better than the other models.
Loureiro, Paula; de Almeida-Neto, Cesar; Proietti, Anna Bárbara Carneiro; Capuani, Ligia; Gonçalez, Thelma Terezinha; de Oliveira, Claudia Di Lorenzo; Leão, Silvana Carneiro; Lopes, Maria Inês; Sampaio, Divaldo; Patavino, Giuseppina Maria; Ferreira, João Eduardo; Blatyta, Paula Fraiman; Lopes, Maria Esther Duarte; Mendrone-Junior, Alfredo; Salles, Nanci Alves; King, Melissa; Murphy, Edward; Busch, Michael; Custer, Brian; Sabino, Ester Cerdeira
2014-03-01
The Retrovirus Epidemiology Donor Study (REDS) program was established in the United States in 1989 with the purpose of increasing blood transfusion safety in the context of the HIV/AIDS and human T-lymphotropic virus epidemics. REDS and its successor, REDS-II were at first conducted in the US, then expanded in 2006 to include international partnerships with Brazil and China. In 2011, a third wave of REDS renamed the Recipient Epidemiology and Donor Evaluation Study-III (REDS-III) was launched. This seven-year research program focuses on both blood banking and transfusion medicine research in the United States of America, Brazil, China, and South Africa. The main goal of the international programs is to reduce and prevent the transmission of HIV/AIDS and other known and emerging infectious agents through transfusion, and to address research questions aimed at understanding global issues related to the availability of safe blood. This article describes the contribution of REDS-II to transfusion safety in Brazil. Articles published from 2010 to 2013 are summarized, including database analyses to characterize blood donors, deferral rates, and prevalence, incidence and residual risk of the main blood-borne infections. Specific studies were developed to understand donor motivation, the impact of the deferral questions, risk factors and molecular surveillance among HIV-positive donors, and the natural history of Chagas disease. The purpose of this review is to disseminate the acquired knowledge and briefly summarize the findings of the REDS-II studies conducted in Brazil as well as to introduce the scope of the REDS-III program that is now in progress and will continue through 2018.
Tran, Sheri; Lewalski, Eva A.; Dwyre, Denis M.; Hagar, Yolanda; Beckett, Laurel; Janatpour, Kim A.; Holland, Paul V.
2009-01-01
Background and Objectives Emergency situations often elicit a generous response from the public. This occurred after attacks on the US on September 11, 2001 when many new blood donors lined up to donate. This study was performed to compare return rates for first time donors (FTD) after September 11th, 2001 to FTD during a comparable period in 2000. Materials and Methods 3315 allogeneic whole blood donations from FTD at a regional blood center were collected between September 11th and 30th, 2001. Subsequent donations by the FTD before March 31, 2002 were reviewed. This (test) group was compared to 1279 FTD(control group) donating during the same time period in September 2000 and to their return rate in the subsequent six months. Results Following September 11, 2001, 1087/3315 (32.8%) FTD returned by March 31, 2002. This return rate was similar to the control group (427/1279 (33.4%)). The deferral rate during the donor screening process for the control group was significantly higher than the deferral rate for the September 11–30, 2001 group (p < 0.01). The odds of an individual FTD returning increased with age, and the chance of a female donor returning was 1.13 times higher than a male (p = 0.06). There was a carryover effect after Sept. 11, 2001 too. Conclusion A national emergency, September 11, 2001, inspired people to donate blood for the first time. However, the proportion of return donations amongst them was not increased. Females and males in certain age groups were more likely to become repeat donors due to the residual effect of September 11, 2001. Additional efforts are needed to retain eligible FTD in donor pools. PMID:20002621
Evidence-Based Policy and Practice Leads to Changes in the Criteria for MSM to Donate Blood.
Slowther, Anne; Watkins, Nicholas A; Kelly, Deirdre
2013-06-01
On November 7, 2011, the permanent deferral from blood donation of men who have sex with men (MSM) changed in England, Scotland and Wales, to a 12-month deferral since last relevant sexual contact. This change was made following an evidence-based policy review by the Advisory Committee on the Safety of Blood, Tissues and Organs (SaBTO). The review concluded that the available evidence supported the introduction of a 12-month fixed period deferral and that the risks associated with a 12-month deferral of MSM were equivalent to a permanent deferral. The permanent deferral for MSM was introduced in 1985 in response to the spread of acquired immunodeficiency syndrome (AIDS) caused by HIV. The change was supported by new data on the level of compliance with the permanent deferral, advances in the testing and processing of donated blood, changes in the epidemiology of sexually transmitted infections (STIs) and improved scientific knowledge. This review discusses how the decision to change the deferral period was reached and highlights some of the remaining issues relating to this contentious matter.
Is there a right to donate blood? Patient rights; donor responsibilities.
Franklin, Ian M
2007-06-01
The objective of this study was to analyse and assess critically whether there is a right to donate blood in the UK. The aim was to provide a basis for blood services, in particular within the UK and European Union (EU), to address claims from deferred donors that there is a right to donate. Recent and ongoing campaigns to change the current life-long deferral from blood donation in the UK, Canada and USA of men who have/have had sex with men (MSM) have highlighted issues over whether individuals have a right to donate blood. The issue is complicated by allegations of discriminatory behaviour, and in some countries politicians have contributed to the argument. As anti-discrimination and equality legislation is strengthened in the UK, other groups in addition to MSM may wish to claim a right to donate blood. The methods adopted included discussions with colleagues in UK and European blood services and a review of the medical literature and wider sources using Internet search engines. No clear right to donate blood is apparent, although it is recommended that donor deferral criteria should have a sound basis of evidence. Potential donors have a right to expect a clear explanation of the reason(s) for refusing a donation. Legal safeguards for recipients to receive safe blood transfusions exist. It is concluded that blood recipients in the EU have a right to receive safe blood, and that this should be viewed as the overriding responsibility of blood services.
Federal Register 2010, 2011, 2012, 2013, 2014
2010-05-03
... displays a current valid OMB control number. Proposed Collection: Title: Investigating the causes of post...; Comment Request; Investigating the Causes of Post Donation Information (PDI): Errors in the Donor... Post Donation Information (PDI). While this deferral risk may be at the next donation event, many...
Garraud, O; Martin, C; Haddad, A; Bagge Hansen, M; Rautmann, G; MacLennan, S; Norda, R
2017-02-01
Allergy accounts to near 0.5% of all reported transfusion adverse events. The responsibility of blood components themselves and - therefore - of blood donors is still questioned. The European Community undertook a large international survey to address the consistency and homogeneity of medical selection of blood donors with regard to the risk of allergy, and especially of transferring allergy to recipients. This short report presents the salient points of the survey, stressing that there is inconsistency in addressing the allergy question within countries or systems, with paths of improvement. Copyright © 2017 Elsevier Masson SAS. All rights reserved.
Brailsford, S R; Kelly, D; Kohli, H; Slowther, A; Watkins, N A
2015-08-01
An important element in the development of voluntary blood donation schemes throughout the world has been the attention given to minimising the risk to recipients of donated blood, primarily the risk of transfusion transmitted infections. In response to the appearance of human immunodeficiency virus (HIV) in the 1980s a range of national policies emerged that excluded populations at high risk of contracting HIV from donating blood, with a particular focus on men who have sex with men (MSM), the primary reason being the protection of recipients of donated blood. Recently some countries, including the UK, have revised their policies, informed by advances in screening tests, epidemiological evidence of transmission rates and an increasing concern about unfair discrimination of specific groups in society. Policy makers face a difficult task of balancing safety of recipients; an adequate blood supply for those who require transfusion; and societal/legal obligations to treat everyone fairly. Given that no transfusion is risk free, the question is what degree of risk is acceptable in order to meet the needs of recipients and society. Decisions about acceptance of risk are complex and policy makers who set acceptable risk levels must provide ethically justifiable reasons for their decisions. We suggest it is possible to provide a set of reasons that stakeholders could agree are relevant based on careful evaluation of the evidence of all relevant risks and explicit acknowledgement of other morally relevant values. We describe using such a process in the Safety of Blood Tissue and Organs (SaBTO) review of donor deferral criteria related to sexual behaviour. © 2015 British Blood Transfusion Society.
Custer, Brian; Sheon, Nicolas; Siedle-Khan, Bob; Pollack, Lance; Spencer, Bryan; Bialkowski, Walter; D'Andrea, Pam; Sullivan, Marian; Glynn, Simone; Williams, Alan
2015-01-01
Background In the US, any man who discloses having had sex with another man (MSM) even once since 1977 is currently deferred from donating blood. A study was conducted to assess noncompliance with the policy at four geographically dispersed blood centers. Methods Male donors 18+ years of age with email addresses were randomly selected and invited to complete a confidential online survey between Aug – Oct 2013. No additional recruitment emails were sent. Survey content included: demographics, sexual history, donation history, compliance with the policy, and opinions about current and modified policies. Results Response rate was 11.5% overall but varied by center (6.3 to 21.7%). Of 3183 completed surveys, 2.6% of respondents (95% Confidence Interval 2.1 – 3.2%) reported donation after male-male sex. Noncompliance was not statistically different among the centers [p=0.1], but was related to age with 5.7%, 4.6%, 2.5%, and 1.0% of donors 18-24, 25-34, 35-54, and 50+ years of age, respectively, reporting noncompliance [p<0.001]. Of all respondents, 6.8% reported ≥6 female sex partners and 0.3% reported ≥6 male sex partners in the last five years. Opinions about the current MSM policy were mixed with noncomplying donors more supportive of change than complying donors. About half of noncompliers indicated they would adhere to a 1-year deferral policy. Conclusion Noncompliance with the MSM policy is evident and may be increasing compared to earlier data. It is expected that any change from the current policy will require close monitoring to determine whether it affects residual risk of HIV in the US blood supply. PMID:26202349
Federal Register 2010, 2011, 2012, 2013, 2014
2010-04-30
... Immunodeficiency Virus Type 1 (HIV-1) and Hepatitis C Virus (HCV): Testing, Product Disposition, and Donor Deferral... Industry: Nucleic Acid Testing (NAT) for Human Immunodeficiency Virus Type 1 (HIV-1) and Hepatitis C Virus... Acid Test (NAT) and Hepatitis C Virus (HCV) NAT, on testing individual samples or pooled samples from...
Tagny, Claude T; Nguefack-Tsague, Georges; Fopa, Diderot; Ashu, Celestin; Tante, Estel; Ngo Balogog, Pauline; Donfack, Olivier; Mbanya, Dora; Laperche, Syria; Murphy, Edward
2017-08-01
In sub-Saharan Africa improving the deferral of at-risk blood donors would be a cost-effective approach to reducing transfusion-transmitted human immunodeficiency virus (HIV) infections. We performed a pilot case-control study to identify the risk factors for HIV infection and to develop an adapted donor history questionnaire (DHQ) for sub-Saharan Africa. We recruited 137 HIV-positive donors (cases) and 256 HIV-negative donors (controls) and gathered risk factor data using audio computer-assisted self-interview. Variables with univariate associations were entered into a logistic regression model to assess independent associations. A scoring scheme to distinguish between HIV-positive and HIV-negative donors was developed using receiver operating characteristics curves. We identified 16 risk factors including sex with sex worker, past history or treatment for sexually transmitted infections, and having a partner who used injected or noninjected illegal drugs. Two novel risks were related to local behavior: polygamy (odds ratio [OR], 22.7; 95% confidence interval [CI], 5.9-86.7) and medical or grooming treatment on the street (OR, 1.8; 95% CI, 1.0-3.0). Using the 16 selected items the mean scores (>100) were 82.6 ± 6.7 (range, 53.2-95.1) and 85.1 ± 5.2 for HIV-negative donors versus 77.9 ± 6.8 for HIV-positive ones (p = 0.000). Donors who scored between 80 and 90 were more likely to be HIV negative than those who scored less (OR, 31.4; 95% CI, 3.1-313.9). We identified both typical and novel HIV risk factors among Cameroonian blood donors. An adapted DHQ and score that discriminate HIV-negative donors may be an inexpensive means of reducing transfusion-transmitted HIV through predonation screening. © 2017 AABB.
Transfusion-related transmission of yellow fever vaccine virus--California, 2009.
2010-01-22
In the United States, yellow fever (YF) vaccination is recommended for travelers and active duty military members visiting endemic areas of sub-Saharan Africa and Central/South America. The American Red Cross recommends that recipients of YF vaccine defer blood product donation for 2 weeks because of the theoretical risk for transmission from a viremic donor. On April 10, 2009, a hospital blood bank supervisor learned that, on March 27, blood products had been collected from 89 U.S. active duty trainees who had received YF vaccine 4 days before donation. This report summarizes the subsequent investigation by the hospital and CDC to identify lapses in donor deferral and to determine whether transfusion-related transmission of YF vaccine virus occurred. The investigation found that a recent change in the timing of trainee vaccination had occurred and that vaccinees had not reported recent YF vaccination status at time of donation. Despite a prompt recall, six units of blood products were transfused into five patients. No clinical evidence or laboratory abnormalities consistent with a serious adverse reaction were identified in four recipients within the first month after transfusion; the fifth patient, who had prostate cancer and end-stage, transfusion-dependent, B-cell lymphoma, died while in hospice care. Three of the four surviving patients had evidence of serologic response to YF vaccine virus. This report provides evidence that transfusion-related transmission of YF vaccine virus can occur and underscores the need for careful screening and deferral of recently vaccinated blood donors.
Analysis of Blood Transfusion Data Using Bivariate Zero-Inflated Poisson Model: A Bayesian Approach
Mohammadi, Tayeb; Sedehi, Morteza
2016-01-01
Recognizing the factors affecting the number of blood donation and blood deferral has a major impact on blood transfusion. There is a positive correlation between the variables “number of blood donation” and “number of blood deferral”: as the number of return for donation increases, so does the number of blood deferral. On the other hand, due to the fact that many donors never return to donate, there is an extra zero frequency for both of the above-mentioned variables. In this study, in order to apply the correlation and to explain the frequency of the excessive zero, the bivariate zero-inflated Poisson regression model was used for joint modeling of the number of blood donation and number of blood deferral. The data was analyzed using the Bayesian approach applying noninformative priors at the presence and absence of covariates. Estimating the parameters of the model, that is, correlation, zero-inflation parameter, and regression coefficients, was done through MCMC simulation. Eventually double-Poisson model, bivariate Poisson model, and bivariate zero-inflated Poisson model were fitted on the data and were compared using the deviance information criteria (DIC). The results showed that the bivariate zero-inflated Poisson regression model fitted the data better than the other models. PMID:27703493
The revision of the European blood directives: A major challenge for transfusion medicine.
Folléa, G; Aranko, K
2015-08-01
Using both patient-focused and donor-focused perspectives, to review the current EU blood directives, in order to derive proposals, in principle, for what should evolve during the revision process of these directives. Review of the EU blood directives in the light of scientific literature, related reports from the Directorate General Health and Consumers (DG SANTÉ), and from the Council of Europe (CoE). The analyses led us to present the main following proposals: developing voluntary unpaid donations: the directives should consider taking into consideration ethically acceptable forms of compensation consistent with altruistic donation (including plasma donations for fractionation); current expertise: more extensive utilization of the expertise of blood establishments and their consultants should be considered; donor selection: an evidence-based approach for basing donor deferral criteria on sound scientific evidence should be promoted; donor reactions: measures to prevent donor reactions and to make donations safer for the donors should also be included; quality control: The quality control requirements should relate to the Council of Europe Blood Guide specifications: these should become minimum standards (as is the case with monographs of the European Pharmacopeia), facilitating regular update of blood component lists and related specifications and compliance with the specifications; haemovigilance: because of reporting difficulties (e.g. lack of number of blood products transfused), the effectiveness of haemovigilance has so far been limited. This should lead appropriate bodies to investigate alternative or complementary ways to help improve patient safety, taking into consideration, in principle, patient blood management and the appropriate use of blood products. Furthermore, donor vigilance, which is still absent from the current directive should be included in a revised directive. These proposals for revising the current EU blood directives (if taken into account and given appropriate regulatory formulation) should help to optimize patient safety and donor care, progress the compliance with the ethical principles for donors and improve the efficiency of the healthcare systems dedicated to transfusion medicine. Copyright © 2015 Elsevier Masson SAS. All rights reserved.
Prediction of hemoglobin in blood donors using a latent class mixed-effects transition model.
Nasserinejad, Kazem; van Rosmalen, Joost; de Kort, Wim; Rizopoulos, Dimitris; Lesaffre, Emmanuel
2016-02-20
Blood donors experience a temporary reduction in their hemoglobin (Hb) value after donation. At each visit, the Hb value is measured, and a too low Hb value leads to a deferral for donation. Because of the recovery process after each donation as well as state dependence and unobserved heterogeneity, longitudinal data of Hb values of blood donors provide unique statistical challenges. To estimate the shape and duration of the recovery process and to predict future Hb values, we employed three models for the Hb value: (i) a mixed-effects models; (ii) a latent-class mixed-effects model; and (iii) a latent-class mixed-effects transition model. In each model, a flexible function was used to model the recovery process after donation. The latent classes identify groups of donors with fast or slow recovery times and donors whose recovery time increases with the number of donations. The transition effect accounts for possible state dependence in the observed data. All models were estimated in a Bayesian way, using data of new entrant donors from the Donor InSight study. Informative priors were used for parameters of the recovery process that were not identified using the observed data, based on results from the clinical literature. The results show that the latent-class mixed-effects transition model fits the data best, which illustrates the importance of modeling state dependence, unobserved heterogeneity, and the recovery process after donation. The estimated recovery time is much longer than the current minimum interval between donations, suggesting that an increase of this interval may be warranted. Copyright © 2015 John Wiley & Sons, Ltd.
Code of Federal Regulations, 2013 CFR
2013-04-01
... eligible plans of qualified police or firefighters. An eligible plan with participants that include... deferral agreements under eligible plans. 1.457-4 Section 1.457-4 Internal Revenue INTERNAL REVENUE SERVICE... under eligible plans. (a) Taxation of annual deferrals. Annual deferrals that satisfy the requirements...
Code of Federal Regulations, 2014 CFR
2014-04-01
... eligible plans of qualified police or firefighters. An eligible plan with participants that include... deferral agreements under eligible plans. 1.457-4 Section 1.457-4 Internal Revenue INTERNAL REVENUE SERVICE... under eligible plans. (a) Taxation of annual deferrals. Annual deferrals that satisfy the requirements...
Code of Federal Regulations, 2012 CFR
2012-04-01
... eligible plans of qualified police or firefighters. An eligible plan with participants that include... deferral agreements under eligible plans. 1.457-4 Section 1.457-4 Internal Revenue INTERNAL REVENUE SERVICE... under eligible plans. (a) Taxation of annual deferrals. Annual deferrals that satisfy the requirements...
Custer, Brian; Murcia, Karla; Robinson, William T; McFarland, Willi; Raymond, Henry Fisher
2018-04-01
In 2016, the US Food and Drug Administration changed the regulation from a permanent deferral from donation for men who have sex with men (MSM) to a 1-year deferral since last sexual contact. It is unknown what proportions of MSM try to donate and if they would be willing to answer individual risk-based questions to assess their current eligibility. The National HIV Behavioral Surveillance surveys periodically measure human immunodeficiency virus (HIV) prevalence and risk behaviors among MSM using a venue-based, time-location sampling method. In the 2014 cycle, that is, before the policy change, investigators in San Francisco and New Orleans added questions about blood donation. Questions inquired into three domains: donation history, policy awareness, and knowledge about HIV testing of donations. There were 404 and 557 respondents in San Francisco and New Orleans, respectively. Nearly one in three MSM in San Francisco (27.4%) and New Orleans (31.4%) tried to donate after their first MSM contact. A majority (63.1% in San Francisco, 58.8% in New Orleans) somewhat or strongly agreed that they would be willing to be asked detailed questions for donation eligibility assessment. The proportion of MSM who reported trying to donate was similar in the two cities. However, a substantial proportion did not agree to be asked more detailed risk behavior questions to assess eligibility. In these two geographic locations, prominent regional differences were not evident. © 2018 AABB.
Risk factors for retrovirus and hepatitis virus infections in accepted blood donors.
Custer, Brian; Kessler, Debra; Vahidnia, Farnaz; Leparc, German; Krysztof, David E; Shaz, Beth; Kamel, Hany; Glynn, Simone; Dodd, Roger Y; Stramer, Susan L
2015-05-01
Risk factor surveillance among infected blood donors provides information on the effectiveness of eligibility assessment and is critical for reducing risk of transfusion-transmitted infection. American Red Cross, Blood Systems, Inc., New York Blood Center, and OneBlood participated in a case-control study from 2010 to 2013. Donors with serologic and nucleic acid testing (NAT) or NAT-only confirmed human immunodeficiency virus (HIV), hepatitis B virus (HBV), hepatitis C virus (HCV), or serology-confirmed human T-lymphotropic virus (HTLV) infections (cases) and donors with false-positive results (controls) were interviewed for putative behavioral and demographic risks. Frequencies and adjusted odds ratios (AORs) from multivariable logistic regression analyses for each exposure in cases compared to controls are reported. In the study, 196 HIV, 292 HBV, 316 HCV, and 198 HTLV cases, and 1587 controls were interviewed. For HIV, sex with an HIV+ person (AOR, 132; 95% confidence interval [CI], 27-650) and male-male sex (AOR, 62; 95% CI, 27-140) were primary risk factors. For HBV, first-time donor status (AOR, 16; 95% CI, 10-27), sex with an injection drug user (IDU; AOR, 11; 95% CI, 5-28), and black race (AOR, 11; 95% CI, 6-19) were primary. For HCV, IDU (AOR, 42; 95% CI, 13-136), first time (AOR, 18; 95% CI, 10-30), and a family member with hepatitis (AOR, 15; 95% CI, 6-40) were primary. For HTLV, sex with an IDU (AOR, 22; 95% CI, 10-48), 55 years old or more (AOR, 21; 95% CI, 8-52], and first time (AOR, 15; 95% CI, 9-24) were primary. Despite education efforts and risk screening, individuals with deferrable risks still donate; they may fail to understand or ignore or do not believe they have risk. Recipients have potential transfusion-transmitted infection risk because of nondisclosure by donors. © 2014 AABB.
Blood donor selection in European Union directives: room for improvement
de Kort, Wim; Mayr, Wolfgang; Jungbauer, Christof; Vuk, Tomislav; Kullaste, Riin; Seifried, Erhard; Grazzini, Giuliano; de Wit, Jeroen; Folléa, Gilles
2016-01-01
Background Transfusion-transmissible infections have made both blood bankers and health authorities overly cautious. The general public expects and hence reinforces this policy. To obtain a high level of blood product safety, blood and plasma donors have to meet increasingly stringent eligibility criteria; however, it is not known whether this policy translates into improved outcomes for patients. There is a risk that the management of donors does not match the ambition of greater safety for patients. European directives related to the collection process and donor selection will probably be reconsidered in the next few years. Material and methods The development of European directives on donor selection and their basis in the literature were reviewed with an emphasis on the background and considerations for eligibility criteria to be included in the directives. Results The precautionary principle appears to be the predominant reason behind the set of eligibility criteria. However, the formal eligibility criteria, put into force in 2004, do not balance with the developments of the past decade in laboratory tests and measures that have substantially reduced actual infection risks. In no cases were the effects of eligibility criteria on the donor pool and donor well-being quantified. Regional differences in the epidemiology of transfusion-transmissible infections were not taken into consideration either. Discussion First, the Authors promote the collection of epidemiological data on the incidence and prevalence of conditions in the general population and in blood and plasma donors which could pose a risk for transfused patients, in order to use these data as a basis for decision-making in donor-selection policies. Second, the Authors suggest including allowance for differential deferral criteria throughout Europe, based on factual risk levels. There should be an accepted balance between donor and patient welfare, and also between risk to transfusion safety and risk of compromising the blood supply. PMID:26509824
Minority donation in the United States: challenges and needs.
Shaz, Beth H; Hillyer, Christopher D
2010-11-01
In the United States, blood donation rates of African-Americans are 25-50% of that of white individuals. As African-Americans make up an ever increasing and now substantial minority, and African-American recipients of blood transfusion, both specialized, such as sickle cell disease patients, and general hospitalized patients, have a better chance of receiving phenotype-matched or appropriate red blood cell units when there is a significant percentage of products in the inventory from African-American donors, it is important to understand the reason for the observed difference. Possible reasons for this discrepancy in donation rates include increased rates of donor deferral and ineligibility; increased barriers to donation, such as fear and distrust; and different marketing and education strategies. Thus, to increase the blood availability to African-American recipients, the reasons for these donation rate differences must be better understood and subsequently addressed through improved blood donor recruitment programs. The majority of African-American donor recruitment programs have focused on donating for sickle cell disease patients, particularly children, which have been of limited success. Significant improvements in African-American donor recruitment are needed to adequately meet the demand of African-American patients as well as the entire population.
Alloexposed blood donors and transfusion-related acute lung injury: a case-referent study.
Middelburg, Rutger A; van Stein, Daniëlle; Atsma, Femke; Wiersum-Osselton, Johanna C; Porcelijn, Leendert; Beckers, Erik A M; Briët, Ernest; van der Bom, Johanna G
2011-10-01
Donor white blood cell (WBC) antibodies are thought to increase the risk of transfusion-related acute lung injury (TRALI). WBC antibodies can be present in blood products from donors who have been alloexposed. Alloexposed donors are increasingly excluded from donating plasma, but can still donate plasma-poor products. We aimed to quantify the contribution of alloexposed donors to the occurrence of TRALI for different blood product types. We performed a case-referent study including all reported TRALI patients and all Dutch blood donors. Data on alloexposure status of donors of all TRALI cases reported between January 2004 and October 2008, in the Netherlands, were compared to information on the total donor population. Alloexposure status of all 223 involved donors was compared to the expected status. The overall percentage of TRALI cases that could have been prevented by the deferral of all alloexposed donors (i.e., population-attributable risk [PAR]) was 51% (95% confidence interval [CI], 14%-88%). In 19 recipients of exclusively plasma-poor products (mostly red blood cells [RBCs]), alloexposure of the donors was not associated with TRALI, while in 28 recipients of both plasma-poor and plasma-rich products (>200 mL plasma), the PAR was 94% (95% CI, 34%-100%). Alloexposed donors conferred an increased risk of TRALI in recipients of plasma-rich products, but not in recipients of plasma-poor products. Although WBC antibodies are an important risk factor for TRALI, among RBC recipients another risk factor must be more important. © 2011 American Association of Blood Banks.
[Demography and donation frequencies of blood and plasma donor populations in Germany].
Ritter, Sabine; Willand, L; Reinhard, B; Offergeld, R; Hamouda, O
2008-08-01
According to Article 22 of the Transfusion Act, the Robert Koch Institute collects and evaluates nationwide data on the prevalence and incidence of transfusion-relevant infections among blood and plasma donors in Germany. Due to revision of the Transfusion Act in 2005 not only the number of donations but also the number of donors has become available for analysis. Here we give a detailed account on the demographic profile and donation frequencies of German whole blood, plasma and platelet donors in 2006. Overall, 4 % of the German population eligible to donate were active as repeat whole blood donors in 2006; 0.3 % repeatedly donated plasma or platelets. Irrespective of the type of donation, the percentage of donors among the general population was highest among the youngest age group (18 to 24 years). While the age distribution of whole blood repeat donors roughly resembled that of the general population, with the greatest number among those aged 35 to 44, younger age groups were overrepresented among repeat plasma donors. Donation frequency varied depending on donor age and sex, with an average of 1.9 per year for whole blood donations, 11.9 for plasmapheresis and 4.0 for plateletpheresis. With the exception of the latter, men donated more frequently than women. For both sexes, donation frequency increased with age. Detailed knowledge of the demographic profile and changes in the composition of donor populations are essential for planning adequate blood supply. The data presented may serve as reference for assessing the consequences of measures that affect the number of donors and/or donations (for example changing deferral criteria) in Germany.
29 CFR 2520.104-50 - Short plan years, deferral of accountant's examination and report.
Code of Federal Regulations, 2011 CFR
2011-07-01
... 29 Labor 9 2011-07-01 2011-07-01 false Short plan years, deferral of accountant's examination and... Reporting and Disclosure Requirements § 2520.104-50 Short plan years, deferral of accountant's examination... year begins is changed. (b) Deferral of accountant's report. A plan administrator is not required to...
29 CFR 2520.104-50 - Short plan years, deferral of accountant's examination and report.
Code of Federal Regulations, 2013 CFR
2013-07-01
... 29 Labor 9 2013-07-01 2013-07-01 false Short plan years, deferral of accountant's examination and... Reporting and Disclosure Requirements § 2520.104-50 Short plan years, deferral of accountant's examination... year begins is changed. (b) Deferral of accountant's report. A plan administrator is not required to...
29 CFR 2520.104-50 - Short plan years, deferral of accountant's examination and report.
Code of Federal Regulations, 2012 CFR
2012-07-01
... 29 Labor 9 2012-07-01 2012-07-01 false Short plan years, deferral of accountant's examination and... Reporting and Disclosure Requirements § 2520.104-50 Short plan years, deferral of accountant's examination... year begins is changed. (b) Deferral of accountant's report. A plan administrator is not required to...
29 CFR 2520.104-50 - Short plan years, deferral of accountant's examination and report.
Code of Federal Regulations, 2014 CFR
2014-07-01
... 29 Labor 9 2014-07-01 2014-07-01 false Short plan years, deferral of accountant's examination and... Reporting and Disclosure Requirements § 2520.104-50 Short plan years, deferral of accountant's examination... year begins is changed. (b) Deferral of accountant's report. A plan administrator is not required to...
Federal Register 2010, 2011, 2012, 2013, 2014
2012-10-02
... Activities: Deferral of Duty on Large Yachts Imported for Sale AGENCY: U.S. Customs and Border Protection... collection requirement concerning Deferral of Duty on Large Yachts Imported for Sale. This request for...: Title: Deferral of Duty on Large Yachts Imported for Sale. OMB Number: 1651-0080. Form Number: None...
Shehab, Dena; Duff, Julia; Pasch, Lauri A; Mac Dougall, Kirstin; Scheib, Joanna E; Nachtigall, Robert D
2008-01-01
To describe parents' disclosure decision-making process. In-depth ethnographic interviews. Participants were recruited from 11 medical infertility practices and 1 sperm bank in Northern California. One hundred forty-one married couples who had conceived a child using donor gametes (62 with donor sperm, 79 with donor oocytes). Husbands and wives were interviewed together and separately. Thematic analysis of interview transcripts. Ninety-five percent of couples came to a united disclosure decision, some "intuitively," but most after discussions influenced by the couples' local sociopolitical environment, professional opinion, counseling, religious and cultural background, family relationships, and individual personal, psychological, and ethical beliefs. Couples who were not initially in agreement ultimately came to a decision after one partner deferred to the wishes or opinions of the other. Deferral could reflect the result of a prior agreement, one partner's recognition of the other's experiential or emotional expertise, or direct persuasion. In disclosing couples, men frequently deferred to their wives, whereas, in nondisclosing couples, women always deferred to their husbands. Although the majority of couples were in initial agreement about disclosure, for many the disclosure decision was a complex, negotiated process reflecting a wide range of influences and contexts.
Gómez-Simón, Antonia; Navarro-Núñez, Leyre; Pérez-Ceballos, Elena; Lozano, María L; Candela, María J; Cascales, Almudena; Martínez, Constantino; Corral, Javier; Vicente, Vicente; Rivera, José
2007-06-01
Predonation hemoglobin measurement is a problematic requirement in mobile donation settings, where accurate determination of venous hemoglobin by hematology analyzers is not available. We have evaluated hemoglobin screening in prospective donors by the semiquantitative copper sulphate test and by capillary blood samples analyzed by three portable photometers, HemoCue, STAT-Site MHgb, and the CompoLab HB system. Capillary blood samples were obtained from 380 donors and tested by the copper sulphate test and by at least one of the named portable photometers. Predonation venous hemoglobin was also determined in all donors using a Coulter Max-M analyzer. The three photometers provided acceptable reproducibility (CV below 5%), and displayed a significant correlation between the capillary blood samples and the venous hemoglobin (R2 0.5-0.8). HemoCue showed the best agreement with venous hemoglobin determination, followed by STAT-Site MHgb, and the CompoLab HB system. The copper sulphate test provided the highest rate of donors acceptance (83%) despite unacceptable hemoglobin levels, and the lowest rate for donor deferral (1%) despite acceptable hemoglobin levels. The percentage of donors correctly categorized for blood donation by the portable hemoglobinometers was 85%, 82%, and 76% for CompoLab HB system, HemoCue and STAT-Site, respectively. Our data suggest that hemoglobin determination remains a conflictive issue in donor selection in the mobile setting. Without appropriate performance control, capillary hemoglobin screening by either the copper sulphate method or by the novel portable hemoglobinometers could be inaccurate, thus potentially affecting both donor safety and the blood supply.
Code of Federal Regulations, 2012 CFR
2012-07-01
... deferral or exception to performance or repayment under a scholarship agreement? 386.41 Section 386.41... grant a deferral or exception to performance or repayment under a scholarship agreement? A deferral or... or result in death; or (2) Has died. (b) Repayment of a scholarship may be deferred during the time...
Code of Federal Regulations, 2013 CFR
2013-07-01
... deferral or exception to performance or repayment under a scholarship agreement? 386.41 Section 386.41... grant a deferral or exception to performance or repayment under a scholarship agreement? A deferral or... or result in death; or (2) Has died. (b) Repayment of a scholarship may be deferred during the time...
Code of Federal Regulations, 2014 CFR
2014-07-01
... deferral or exception to performance or repayment under a scholarship agreement? 386.41 Section 386.41... grant a deferral or exception to performance or repayment under a scholarship agreement? A deferral or... or result in death; or (2) Has died. (b) Repayment of a scholarship may be deferred during the time...
Code of Federal Regulations, 2010 CFR
2010-07-01
... deferral or exception to performance or repayment under a scholarship agreement? 386.41 Section 386.41... grant a deferral or exception to performance or repayment under a scholarship agreement? A deferral or... or result in death; or (2) Has died. (b) Repayment of a scholarship may be deferred during the time...
Code of Federal Regulations, 2011 CFR
2011-07-01
... deferral or exception to performance or repayment under a scholarship agreement? 386.41 Section 386.41... grant a deferral or exception to performance or repayment under a scholarship agreement? A deferral or... or result in death; or (2) Has died. (b) Repayment of a scholarship may be deferred during the time...
Externalizing religious health beliefs and health and well-being outcomes.
Hayward, R David; Krause, Neal; Ironson, Gail; Pargament, Kenneth I
2016-10-01
Certain religious beliefs related to perceptions of internal or external health control (including belief in the existence of miraculous healing, and beliefs deferring responsibility for health outcomes from the self and onto God) may be related to health behaviors and in turn to health outcomes. Using data from a nationally representative US survey of religion and health (N = 2948) this study evaluates a series of two structural equation models of the relationships between religious activity, externalizing religious health beliefs (belief in healing miracles and divine health deferral), health outcomes, and life satisfaction. Believing in healing miracles was related to greater divine health deferral. Greater divine health deferral was associated with poorer symptoms of physical health. Belief in miracles was related to greater life satisfaction. Comparison of coefficients across models indicated that externalizing beliefs had a significant suppressor effect on the relationship between religious activity and physical symptoms, but did not significantly mediate its relationship with life satisfaction. Religious beliefs emphasizing divine control over health outcomes may have negative consequences for health outcomes, although the same beliefs may contribute to a better sense of life satisfaction.
Spencer, Bryan R.; Johnson, Bryce; Wright, David J.; Kleinman, Steven; Glynn, Simone A.; Cable, Ritchard G.
2016-01-01
BACKGROUND A minimum male hemoglobin (Hb) of 13.0 g/dL will become an FDA requirement in May 2016. In addition, extending whole blood (WB) interdonation intervals (IDIs) beyond 8 weeks has been considered in order to reduce iron depletion in repeat blood donors. This study estimates the impact these changes might have on blood availability and donor iron status. STUDY DESIGN AND METHODS Six blood centers participating in REDS-II collected information on all donation visits from 2006–09. Simulations were developed from these data using a multi-stage approach that first sought to adequately reproduce the patterns of donor return, Hb and ferritin levels, and outcomes of a donor’s visit (successful single or double RBC donation, deferral for low Hb) observed in REDS-II datasets. Modified simulations were used to predict the potential impact on the blood supply and donor iron status under different Hb cutoff and IDI qualification criteria. RESULTS More than 10% of WB donations might require replacement under many simulated scenarios. Longer IDIs would reduce the proportion of donors with iron depletion, but 80% of these donors may remain iron-depleted if minimal IDIs increased to 12 or 16 weeks. CONCLUSION Higher Hb cutoffs and longer IDIs are predicted to have a potentially large impact on collections but only a modest impact on donor iron depletion. Efforts to address iron depletion should be targeted to at-risk donors, such as iron supplementation programs for frequent donors, and policy makers should try to avoid broadly restrictive donation requirements that could substantially reduce blood availability. PMID:27237451
Sellors, John W; Hayward, Robert; Swanson, Graham; Ali, Anita; Haynes, R Brian; Bourque, Ronald; Moore, Karen-Ann; Lohfeld, Lynne; Dalby, Dawn; Howard, Michelle
2002-01-01
Background Self-administered computer-assisted blood donor screening strategies may elicit more accurate responses and improve the screening process. Methods Randomized crossover trial comparing responses to questions on a computerized hand-held tool (HealthQuiz, or HQ), to responses on the standard written instrument (Donor Health Assessment Questionnaire, or DHAQ). Randomly selected donors at 133 blood donation clinics in the area of Hamilton, Canada participated from 1995 to 1996. Donors were randomized to complete either the HQ or the DHAQ first, followed by the other instrument. In addition to responses of 'yes' and 'no' on both questionnaires, the HQ provided a response option of 'not sure'. The primary outcome was the number of additional donors deferred by the HQ. Results A total of 1239 donors participated. Seventy-one potential donors were deferred as a result of responses to the questionnaires; 56.3% (40/71) were deferred by the DHAQ, and an additional 43.7% (31/71) were deferred due to risks identified by the HQ but not by the DHAQ. Fourteen donors self-deferred; 11 indicated on the HQ that they should not donate blood on that day but did not use the confidential self-exclusion option on the DHAQ, and three used the self-exclusion option on the DHAQ but did not indicate that they should not donate blood on the HQ. The HQ identified a blood contact or risk factor for HIV/AIDS or sexually transmitted infection that was not identified by the DHAQ in 0.1% to 2.7% of donors. Conclusion A self-administered computerized questionnaire may increase risk reporting by blood donors. PMID:12191432
Code of Federal Regulations, 2010 CFR
2010-04-01
... the next, so that in any single year an employee may have a maximum of four weeks' vacation time. At... agreement providing for the deferral), the value of any unused vacation time from the prior year in excess... amount is the lesser of two times the basic annual limitation ($30,000) or the sum of the basic annual...
Code of Federal Regulations, 2011 CFR
2011-04-01
... the next, so that in any single year an employee may have a maximum of four weeks' vacation time. At... agreement providing for the deferral), the value of any unused vacation time from the prior year in excess... amount is the lesser of two times the basic annual limitation ($30,000) or the sum of the basic annual...
Karamitros, Georgios; Kitsos, Nikolaos; Karamitrou, Ioanna
2017-01-01
During the 1980s the HIV/AIDS epidemic outbreak occurred. Due to the high prevalence of the disease on men who had sex with men (MSM) a lifetime ban on blood donations on men who had sex with men (MSM) was implemented. In the recent years, organizations like the European Union (EU) and the World Health Organization (WHO) have established new guidelines introducing the term of "risky sexual behavior" without any reference to the sex orientation of the potential donor, however many countries are hesitant to review the ban on men who had sex with men (MSM). Given the lack of screening methods for HIV back in the '80s the ban on men who had sex with men seemed like the only choice in order to limit the disease. However, nowadays the screening methods have advanced and the possibility of a transfusion related HIV infection is extremely low. Many countries, considering the new data available, have reformed their policies and moved from the lifetime ban to 5-year and 1-year deferrals but only a fraction of countries have adopted the guidelines for the "risky sexual behavior" assessment. The ban that forbid men who have sex with men from donating blood was implemented more than 30 years ago. During the '80s, the epidemiology was different and it seems not only hypocritical but also naïve to rely on guidelines that are far outdated and old-fashioned. The medical community has a duty to secure safe blood for every person who might need it, let us not waste safe potential donors and stigmatize them by focusing on outdated policies.
An analysis of first-time blood donors return behaviour using regression models.
Kheiri, S; Alibeigi, Z
2015-08-01
Blood products have a vital role in saving many patients' lives. The aim of this study was to analyse blood donor return behaviour. Using a cross-sectional follow-up design of 5-year duration, 864 first-time donors who had donated blood were selected using a systematic sampling. The behaviours of donors via three response variables, return to donation, frequency of return to donation and the time interval between donations, were analysed based on logistic regression, negative binomial regression and Cox's shared frailty model for recurrent events respectively. Successful return to donation rated at 49·1% and the deferral rate was 13·3%. There was a significant reverse relationship between the frequency of return to donation and the time interval between donations. Sex, body weight and job had an effect on return to donation; weight and frequency of donation during the first year had a direct effect on the total frequency of donations. Age, weight and job had a significant effect on the time intervals between donations. Aging decreases the chances of return to donation and increases the time interval between donations. Body weight affects the three response variables, i.e. the higher the weight, the more the chances of return to donation and the shorter the time interval between donations. There is a positive correlation between the frequency of donations in the first year and the total number of return to donations. Also, the shorter the time interval between donations is, the higher the frequency of donations. © 2015 British Blood Transfusion Society.
26 CFR 1.409A-1 - Definitions and covered plans.
Code of Federal Regulations, 2011 CFR
2011-04-01
... the deferral of recognition of income until the later of the following: (i) The exercise or... feature for the deferral of compensation other than the deferral of recognition of income until the...
Code of Federal Regulations, 2011 CFR
2011-04-01
... 19 Customs Duties 1 2011-04-01 2011-04-01 false Bond for Deferral of Duty on Large Yachts Imported... Appendix C to Part 113—Bond for Deferral of Duty on Large Yachts Imported for Sale at United States Boat Shows Bond for Deferral of Duty on Large Yachts Imported for Sale at United States Boat Shows ____, as...
Code of Federal Regulations, 2010 CFR
2010-04-01
... 19 Customs Duties 1 2010-04-01 2010-04-01 false Bond for Deferral of Duty on Large Yachts Imported... Appendix C to Part 113—Bond for Deferral of Duty on Large Yachts Imported for Sale at United States Boat Shows Bond for Deferral of Duty on Large Yachts Imported for Sale at United States Boat Shows ____, as...
The Logic of Deferral: Educational Aims and Intellectual Disability
ERIC Educational Resources Information Center
Taylor, Ashley
2018-01-01
The educational aims described by educational philosophers rarely embrace the full range of differences in intellectual ability, adaptive behavior, or communication that children exhibit. Because envisioned educational aims have significant consequences for how educational practices, pedagogy, and curricula are conceptualized, the failure to…
A vital fluid: risk, controversy and the politics of blood donation in the era of "mad cow disease".
O'Neill, Kate
2003-10-01
This article examines the reasons for, and likely impact of, the decision by the US and other countries to permanently defer blood donors who have spent time in Britain or Europe, for fear they may transmit new variant Creutzfeldt-Jakob disease (vCJD), the human form of "mad cow disease". It begins by discussing how vCJD and blood transfusion are linked, and how these have been translated into policy. First, maintaining a safe and stable supply of blood entails not only maintaining the trust of recipients in the system, but also that of donors, who need to be assured that their blood will be welcomed and used. Often, the balance, once upset, is regained by sacrificing donors, but accompanying costs might also be high. Second, the article highlights the impact of various forms of globalization -of commerce, disease and travel, and immigration- on blood policies and public and policy attitudes. Third, it assesses the decision by the US to restrict blood donations from Europeans and travelers to combat such a pervasive risk. The conclusion discusses how donor deferral policies may be interpreted by the public in the light of earlier discussions, and raises issues for future research.
Einhorn, Lisa M; Young, Brian J; Routh, Jonathan C; Allori, Alexander C; Tracy, Elisabeth T; Greene, Nathaniel H
2017-11-01
This study uses publicly available data to analyze the total number of elective, potentially deferrable operative procedures involving infants <6 months of age in the United States. We investigated the factors associated with the performance of these procedures in this population. The State Ambulatory Surgery Database was used to identify patients in California, North Carolina, New York, and Utah during the years of 2007-2010 who were younger than 6 months of age at the time that they underwent outpatient (ambulatory) surgery. Operations that could reasonably be postponed until 6 months of age were classified as potentially deferrable procedures. Hernia repairs were analyzed separately from other deferrable procedures. Primary outcomes included the total number of elective procedures and the number and rates of potentially deferrable procedures per state per year in this population. Over the study period, a total of 27,540 procedures were identified as meeting inclusion criteria; of those, 7832 (28%) were classified as potentially deferrable, 4315 of which were hernia repairs. The average rates of potentially deferrable nonhernia procedures in California, North Carolina, New York, and Utah were 8.3, 43.8, 30.0, and 11.7 per 10,000 person-years, respectively. In multivariable analysis, private insurance (odds ratio [OR] = 1.36), self-pay status (OR = 1.50), and treatment in a different state (OR = 0.48-3.16) were independent predictors of a potentially deferrable procedure being performed on an infant younger than 6 months. Potentially deferrable procedures are still performed in infants <6 months of age. There appears to be significant variation in timing of these procedures among states. Insurance status and geography may be independent predictors of a procedure being potentially deferrable.
The rates, perceptions, and willingness of men who have sex with men to donate blood.
Liszewski, Walter; Becerril, Jordan; Terndrup, Christopher; West, Nathan; Lavin, Bridget C; Schieffler, Danny; Van Sickels, Nicholas
2014-07-01
Since 1983 in the United States, any man who has had sex with another man (MSM) at any time since 1977 has been deferred from donating blood for life. Although there has been a push to change the deferral, there is a paucity of information on both the rates of MSM blood donation and the willingness of MSMs to donate if the deferral were changed. A 15-question survey was given at two lesbian, gay, bisexual, and transgender festivals in Chicago and New Orleans. Participants were asked about a previous history of blood donation and whether they would be willing to donate were the lifetime deferral changed. Participants were also asked to determine whether it was safe for hypothetical MSMs with varying sexual practices to donate blood and whether they believed that it was safe for them to donate their own blood. Our study found that 42.0% of all participants had not complied with the deferral policy and have donated blood at least once, with a mean number of donations of 4.84. Additionally, 85.9% of participants would be willing to donate blood if the deferral were changed. Despite the lifetime deferral, many MSMs have previously donated blood, and many more are willing to donate. Given this, along with the safe implementation of temporary deferral policies in other nations, the United States should consider adopting a temporary deferral policy for MSMs. © 2014 AABB.
Kitchen, Alan D; Hewitt, Patricia E; Chiodini, Peter L
2012-09-01
Trypanosoma cruzi is a parasitic infection endemic in Central and Southern America, but is spreading into nonendemic countries with migration of infected individuals from endemic countries. The parasite is transmitted by transfusion or transplantation and donation screening is performed routinely in endemic countries to prevent transmission. In situations where migrants from endemic countries have settled in nonendemic countries and present as donors (blood or other cellular products), intervention is required to prevent transfusion or transplantation transmission. A screening program for T. cruzi was developed and has been used successfully for over 10 years that includes donor selection and donation screening. Donor selection criteria to identify specific risk of T. cruzi infection were developed together with laboratory screening of donations for T. cruzi antibodies and the subsequent confirmation of screen reactivity. Since the introduction of T. cruzi screening in England in 1998, a total of 38,585 donors and donations have been screened for T. cruzi antibodies, of which 223 were repeat reactive on screening and referred for confirmation: 206 confirmed negative, 14 inconclusive, and three positive. Since the move in 2005 from donor qualification to donation release testing, 15,536 donations were collected and screened, of which 15,499 (99.8%) were T. cruzi antibody negative and released to inventory. An effective program to minimize risk of the transmission of T. cruzi infection via donations has been developed and implemented. Not only does the program minimize risk of transmission, it also minimizes the cumulative, and needless, loss of donors and donations that would ensue if permanent donor deferral alone was adopted. © 2012 American Association of Blood Banks.
47 CFR 1.1166 - Waivers, reductions and deferrals of regulatory fees.
Code of Federal Regulations, 2010 CFR
2010-10-01
... fees. 1.1166 Section 1.1166 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL PRACTICE AND... deferrals of regulatory fees. The fees established by sections 1.1152 through 1.1156 may be waived, reduced... waiver, reduction or deferral of the fee would promote the public interest. Requests for waivers...
45 CFR 201.15 - Deferral of claims for Federal financial participation.
Code of Federal Regulations, 2011 CFR
2011-10-01
... SERVICES GRANTS TO STATES FOR PUBLIC ASSISTANCE PROGRAMS Review and Audits § 201.15 Deferral of claims for... (AABD), of the Social Security Act. (b) Definitions. (1) Deferral Action means the process of suspending... audit exception or financial management review. If a subsequent disallowance should occur, the State...
45 CFR 201.15 - Deferral of claims for Federal financial participation.
Code of Federal Regulations, 2010 CFR
2010-10-01
... SERVICES GRANTS TO STATES FOR PUBLIC ASSISTANCE PROGRAMS Review and Audits § 201.15 Deferral of claims for... (AABD), of the Social Security Act. (b) Definitions. (1) Deferral Action means the process of suspending... audit exception or financial management review. If a subsequent disallowance should occur, the State...
20 CFR 606.41 - High unemployment deferral.
Code of Federal Regulations, 2010 CFR
2010-04-01
... 20 Employees' Benefits 3 2010-04-01 2010-04-01 false High unemployment deferral. 606.41 Section... UNDER THE FEDERAL UNEMPLOYMENT TAX ACT; ADVANCES UNDER TITLE XII OF THE SOCIAL SECURITY ACT Relief from Interest Payment § 606.41 High unemployment deferral. (a) Applicability. Subsection (b)(3)(C) of section...
20 CFR 606.41 - High unemployment deferral.
Code of Federal Regulations, 2012 CFR
2012-04-01
... 20 Employees' Benefits 3 2012-04-01 2012-04-01 false High unemployment deferral. 606.41 Section... UNDER THE FEDERAL UNEMPLOYMENT TAX ACT; ADVANCES UNDER TITLE XII OF THE SOCIAL SECURITY ACT Relief from Interest Payment § 606.41 High unemployment deferral. (a) Applicability. Subsection (b)(3)(C) of section...
20 CFR 606.41 - High unemployment deferral.
Code of Federal Regulations, 2014 CFR
2014-04-01
... 20 Employees' Benefits 3 2014-04-01 2014-04-01 false High unemployment deferral. 606.41 Section... UNDER THE FEDERAL UNEMPLOYMENT TAX ACT; ADVANCES UNDER TITLE XII OF THE SOCIAL SECURITY ACT Relief from Interest Payment § 606.41 High unemployment deferral. (a) Applicability. Subsection (b)(3)(C) of section...
20 CFR 606.41 - High unemployment deferral.
Code of Federal Regulations, 2013 CFR
2013-04-01
... 20 Employees' Benefits 3 2013-04-01 2013-04-01 false High unemployment deferral. 606.41 Section... UNDER THE FEDERAL UNEMPLOYMENT TAX ACT; ADVANCES UNDER TITLE XII OF THE SOCIAL SECURITY ACT Relief from Interest Payment § 606.41 High unemployment deferral. (a) Applicability. Subsection (b)(3)(C) of section...
20 CFR 606.41 - High unemployment deferral.
Code of Federal Regulations, 2011 CFR
2011-04-01
... 20 Employees' Benefits 3 2011-04-01 2011-04-01 false High unemployment deferral. 606.41 Section... UNDER THE FEDERAL UNEMPLOYMENT TAX ACT; ADVANCES UNDER TITLE XII OF THE SOCIAL SECURITY ACT Relief from Interest Payment § 606.41 High unemployment deferral. (a) Applicability. Subsection (b)(3)(C) of section...
Forecasting Ontario's blood supply and demand.
Drackley, Adam; Newbold, K Bruce; Paez, Antonio; Heddle, Nancy
2012-02-01
Given an aging population that requires increased medical care, an increasing number of deferrals from the donor pool, and a growing immigrant population that typically has lower donation rates, the purpose of this article is to forecast Ontario's blood supply and demand. We calculate age- and sex-specific donation and demand rates for blood supply based on 2008 data and project demand between 2008 and 2036 based on these rates and using population data from the Ontario Ministry of Finance. Results indicate that blood demand will outpace supply as early as 2012. For instance, while the total number of donations made by older cohorts is expected to increase in the coming years, the number of red blood cell (RBC) transfusions in the 70+ age group is forecasted grow from approximately 53% of all RBC transfusions in 2008 (209,515) in 2008 to 68% (546,996) by 2036. A series of alternate scenarios, including projections based on a 2% increase in supply per year and increased use of apheresis technology, delays supply shortfalls, but does not eliminate them without active management and/or multiple methods to increase supply and decrease demand. Predictions show that demand for blood products will outpace supply in the near future given current age- and sex-specific supply and demand rates. However, we note that the careful management of the blood supply by Canadian Blood Services, along with new medical techniques and the recruitment of new donors to the system, will remove future concerns. © 2012 American Association of Blood Banks.
31 CFR 339.4 - Exchanges without tax deferral.
Code of Federal Regulations, 2010 CFR
2010-07-01
... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Exchanges without tax deferral. 339.4... SERVICE, DEPARTMENT OF THE TREASURY BUREAU OF THE PUBLIC DEBT EXCHANGE OFFERING OF UNITED STATES SAVINGS BONDS, SERIES H § 339.4 Exchanges without tax deferral. Exchanges by owners who: (a) Report the interest...
27 CFR 41.114a - Qualification for extended deferral.
Code of Federal Regulations, 2014 CFR
2014-04-01
... 27 Alcohol, Tobacco Products and Firearms 2 2014-04-01 2014-04-01 false Qualification for extended... Qualification for extended deferral. Note: This section applies only to removals made before January 1, 1983. (a... of the extended deferral permitted by § 41.114 shall file with the appropriate TTB officer an...
27 CFR 41.114a - Qualification for extended deferral.
Code of Federal Regulations, 2013 CFR
2013-04-01
... 27 Alcohol, Tobacco Products and Firearms 2 2013-04-01 2013-04-01 false Qualification for extended... Qualification for extended deferral. Note: This section applies only to removals made before January 1, 1983. (a... of the extended deferral permitted by § 41.114 shall file with the appropriate TTB officer an...
27 CFR 41.114a - Qualification for extended deferral.
Code of Federal Regulations, 2012 CFR
2012-04-01
... 27 Alcohol, Tobacco Products and Firearms 2 2012-04-01 2011-04-01 true Qualification for extended... Qualification for extended deferral. Note: This section applies only to removals made before January 1, 1983. (a... of the extended deferral permitted by § 41.114 shall file with the appropriate TTB officer an...
Ebola Virus and Marburg Virus in Human Milk Are Inactivated by Holder Pasteurization.
Hamilton Spence, Erin; Huff, Monica; Shattuck, Karen; Vickers, Amy; Yun, Nadezda; Paessler, Slobodan
2017-05-01
Potential donors of human milk are screened for Ebola virus (EBOV) using standard questions, but testing for EBOV and Marburg virus (MARV) is not part of routine serological testing performed by milk banks. Research aim: This study tested the hypothesis that EBOV would be inactivated in donor human milk (DHM) by standard pasteurization techniques (Holder) used in all North American nonprofit milk banks. Milk samples were obtained from a nonprofit milk bank. They were inoculated with EBOV (Zaire strain) and MARV (Angola strain) and processed by standard Holder pasteurization technique. Plaque assays for EBOV and MARV were performed to detect the presence of virus after pasteurization. Neither EBOV nor MARV was detectable by viral plaque assay in DHM or culture media samples, which were pasteurized by the Holder process. EBOV and MARV are safely inactivated in human milk by standard Holder pasteurization technique. Screening for EBOV or MARV beyond questionnaire and self-deferral is not needed to ensure safety of DHM for high-risk infants.
Self-Deferral, HIV Infection, and the Blood Supply: Evaluating an AIDS Intervention.
ERIC Educational Resources Information Center
Kaplan, Edward H.; Novick, Alvin
1990-01-01
This paper evaluates the effectiveness of self-deferral, a social screen implemented to protect the U.S. blood supply from human immunodeficiency virus (HIV) infection prior to the advent of laboratory testing. Mathematical models are developed to estimate the number of infectious transfusions ultimately leading to AIDS prior to self-deferral.…
Federal Register 2010, 2011, 2012, 2013, 2014
2012-12-11
... Activities: Deferral of Duty on Large Yachts Imported for Sale AGENCY: U.S. Customs and Border Protection... of Duty on Large Yachts Imported for Sale. This is a proposed extension of an information collection... information collection: Title: Deferral of Duty on Large Yachts Imported for Sale. OMB Number: 1651-0080. Form...
Olmer, Liraz; Livnat, Yuval; Yanko, Adir; Shinar, Eilat
2017-01-01
Background Men who have sex with men (MSM) are permanently deferred from donating blood in Israel. Pressure to change this policy exists, despite data showing higher prevalence and incidence of HIV in MSM. A survey was conducted to evaluate current knowledge, attitudes, perceptions and compliance if deferral was changed. Study design and methods Anonymous survey was published in a gay-oriented website, collecting demographic information, history of blood donation, attitudes, knowledge and compliance with permanent versus temporary deferral. Responses were analyzed given 1 point for every "yes" response (0–7 points). Student’s t-test was applied to compare differences between continuous variables. Correlations were described with the Pearson correlation coefficient. Results Responses from 492 MSM were analyzed. Average age was 31±9 years. 76% donated blood at least once, mostly for social solidarity (score of 3.2 on 1–5 scale). Tests seeking or protest scores were 1.7 and 1.6, respectively. 66% were unaware of the higher risk of HIV transmission by MSM, or the potential to infect 3 recipients. Knowledge regarding HIV transmission by blood positively correlated with knowledge regarding other routes of HIV transmission (r = 0.11; p = 0.03), age (r = 0.10; p = 0.04), and higher rate of non-compliance with the current deferral policy (OR = 1.9; p = 0.02). Activism for LGBT rights was associated with lower risk for non-adherence (OR = 0.5; p = 0.03). If temporary deferral is introduced 66% will comply with the new policy, but 23% will continue to donate as long as MSM deferral policy is in place. Conclusion A high proportion of MSM do not comply with the current lifetime deferral. This may partially change if temporary deferral is introduced. PMID:28152072
Levy, Itzchak; Olmer, Liraz; Livnat, Yuval; Yanko, Adir; Shinar, Eilat
2017-01-01
Men who have sex with men (MSM) are permanently deferred from donating blood in Israel. Pressure to change this policy exists, despite data showing higher prevalence and incidence of HIV in MSM. A survey was conducted to evaluate current knowledge, attitudes, perceptions and compliance if deferral was changed. Anonymous survey was published in a gay-oriented website, collecting demographic information, history of blood donation, attitudes, knowledge and compliance with permanent versus temporary deferral. Responses were analyzed given 1 point for every "yes" response (0-7 points). Student's t-test was applied to compare differences between continuous variables. Correlations were described with the Pearson correlation coefficient. Responses from 492 MSM were analyzed. Average age was 31±9 years. 76% donated blood at least once, mostly for social solidarity (score of 3.2 on 1-5 scale). Tests seeking or protest scores were 1.7 and 1.6, respectively. 66% were unaware of the higher risk of HIV transmission by MSM, or the potential to infect 3 recipients. Knowledge regarding HIV transmission by blood positively correlated with knowledge regarding other routes of HIV transmission (r = 0.11; p = 0.03), age (r = 0.10; p = 0.04), and higher rate of non-compliance with the current deferral policy (OR = 1.9; p = 0.02). Activism for LGBT rights was associated with lower risk for non-adherence (OR = 0.5; p = 0.03). If temporary deferral is introduced 66% will comply with the new policy, but 23% will continue to donate as long as MSM deferral policy is in place. A high proportion of MSM do not comply with the current lifetime deferral. This may partially change if temporary deferral is introduced.
Preserving the national blood supply.
Brittenham, G M; Klein, H G; Kushner, J P; Ajioka, R S
2001-01-01
This paper examines the current state of the blood supply in the US and focuses on the potential for augmenting blood availability by attention to the iron status of donors. Increasing demands are being made upon the national blood supply as rates of blood donation are declining, in part because of the loss of blood donors as a result of enhanced screening and testing procedures. Iron-related means of expanding the blood supply include the use of blood from individuals undergoing therapeutic phlebotomy for hereditary hemochromatosis and enhancing the retention and commitment of women of childbearing age as donors by using iron supplementation to prevent iron deficiency. In Section I, Dr. Klein discuss the circumstances responsible for a decline in the population of eligible donors, including public attitudes toward donation, factors influencing the retention of donors by blood centers, and the effects of increased screening and testing to maintain the safety of the blood supply. In Section II, Drs. Kushner and Ajioka focus on the consequences of the decision by the US Food and Drug Administration (FDA) to develop recommendations to permit blood centers to collect blood from patients with hereditary hemochromatosis and to distribute this blood obtained without disease labeling if all other screening and testing procedures are passed. After summarizing the pathophysiology of hereditary hemochromatosis, the use by blood centers of blood obtained from heterozygotes and homozygotes for hereditary hemochromatosis is considered. In Section III, Dr. Brittenham reviews the use of low dose, short-term carbonyl iron supplementation for women donors of childbearing age. Replacing the iron lost at donation can help prevent iron deficiency in women of childbearing age and, by decreasing deferral, enhance the retention and commitment of women who give blood regularly. He emphasizes the use by blood centers of iron-related means to enhance recruitment and retention of blood donors.
26 CFR 1.706-1 - Taxable years of partner and partnership.
Code of Federal Regulations, 2010 CFR
2010-04-01
... a taxable year elected under section 444, or establishes a business purpose for such taxable year...: Test 12/31 Year end Interest inpartnership profits Months of deferral for 12/31 year end Interest×deferral Partner A 12/31 .5 0 0 Partner B 11/30 .5 11 5.5 Aggregate deferral 5.5 Test 11/30 Year end...
Bart, Thomas; Volken, Thomas; Fischer, Yvonne; Taleghani, Behrouz Mansouri
2014-07-01
To obtain a better understanding of factors affecting blood and blood stem cell donation behavior in Switzerland, a series of studies has been performed. In the recent study of this series, which is described here, motivators and barriers in the field of blood and blood stem cell donation were identified. Web-based survey data from a non-random sample of the Swiss population 2012/2013 (n = 3,153) were used to describe and compare the ranking of motives and obstacles to donate blood and to enroll on the Swiss blood stem cell registry. Wilcoxon rank-sum test and Spearman's rank correlations were used to assess differences and associations between ranks and groups. The prospect of saving lives and solidarity were the top two motives to donate blood or to enroll on the blood stem cell registry. The top two obstacles to enroll on the blood stem cell registry were lack of general information on blood stem cell donation and on its risks, whereas the top two obstacles to donate blood were the lack of information where and when to donate and deferral of or exclusion from blood donation. Classical altruistic motives are top drivers for giving blood as well as registering for blood stem cell donation. Recruitment campaigns should focus on these motivators. Similarities in motivational factors as well as in obstacles regarding blood and blood stem cell donation can be found.
Macher, Susanne; Drexler, Camilla; Lindenau, Ines; Sareban, Nazanin; Schlenke, Peter; Amrein, Karin
2016-10-28
About 2-3 % of the population participates in blood donation programmes. Each whole blood donation or ten apheresis donations cause a loss of 200-250 mg of iron. As a result, one of the most common risks of regular blood donors is iron deficiency. Although this has been known for decades, in most countries, iron status is currently not assessed or treated in this population. Premenopausal women are particularly affected, as they have lower iron reserves and higher daily requirements. Besides anaemia, iron deficiency may lead to fatigue and impaired cognitive and physical performance. Current iron preparations for intravenous administration are well tolerated and allow for application of large doses up to 1 g in one visit. Our hypothesis is that in blood donors with iron deficiency, intravenously administered iron is more efficient and as safe as oral iron supplementation. Since anaemia is one of the most frequent reasons for permanent or intermittent donor deferral, maintaining an iron-replete donor pool may help to prevent shortages in blood supply and to avoid iron deficiency-related comorbidities. In this randomised clinical trial we include male and female blood donors aged ≥18 and ≤65 years with a ferritin value of ≤30 ng/ml. Stratified by gender, participants are randomized with a web-based randomisation tool in a 1:1 ratio to either 1 g of intravenously administered ferric carboxymaltose or 10 g of iron fumarate supplements at one to two daily doses of 100 mg each. Eight to 12 weeks after the first visit, iron status, blood count and symptoms are assessed in both groups. The primary endpoint is the difference in transferrin saturation (%) following the intervention between both groups. Secondary endpoints include other parameters of iron metabolism and red blood cell count, the number of patients with drug-related adverse events, and subjective symptoms including those of the restless legs syndrome, quality of life, and fatigue. Iron supplementation administered intravenously in non-anaemic but iron-deficient blood donors could represent an effective strategy to protect blood donors from comorbidities related with iron deficiency and therefore improve blood donor wellbeing. Furthermore, iron supplementation will help to maintain an iron-replete blood donor pool. EudraCT: 2013-000327-14, Clinical Trials Identifier: NCT01787526 . Registered on 6 February 2013.
Code of Federal Regulations, 2014 CFR
2014-04-01
... for Sale at United States Boat Shows C Appendix C to Part 113 Customs Duties U.S. CUSTOMS AND BORDER... Appendix C to Part 113—Bond for Deferral of Duty on Large Yachts Imported for Sale at United States Boat Shows Bond for Deferral of Duty on Large Yachts Imported for Sale at United States Boat Shows ____, as...
Code of Federal Regulations, 2013 CFR
2013-04-01
... for Sale at United States Boat Shows C Appendix C to Part 113 Customs Duties U.S. CUSTOMS AND BORDER... Appendix C to Part 113—Bond for Deferral of Duty on Large Yachts Imported for Sale at United States Boat Shows Bond for Deferral of Duty on Large Yachts Imported for Sale at United States Boat Shows ____, as...
Code of Federal Regulations, 2012 CFR
2012-04-01
... for Sale at United States Boat Shows C Appendix C to Part 113 Customs Duties U.S. CUSTOMS AND BORDER... Appendix C to Part 113—Bond for Deferral of Duty on Large Yachts Imported for Sale at United States Boat Shows Bond for Deferral of Duty on Large Yachts Imported for Sale at United States Boat Shows ____, as...
10 CFR 626.8 - Deferrals of contractually scheduled deliveries.
Code of Federal Regulations, 2011 CFR
2011-01-01
... PETROLEUM FOR THE STRATEGIC PETROLEUM RESERVE § 626.8 Deferrals of contractually scheduled deliveries. (a) General. (1) DOE prefers to take deliveries of petroleum for the SPR at times scheduled under applicable...
10 CFR 626.8 - Deferrals of contractually scheduled deliveries.
Code of Federal Regulations, 2010 CFR
2010-01-01
... PETROLEUM FOR THE STRATEGIC PETROLEUM RESERVE § 626.8 Deferrals of contractually scheduled deliveries. (a) General. (1) DOE prefers to take deliveries of petroleum for the SPR at times scheduled under applicable...
Steele, Whitney Randolph; Schreiber, George B; Guiltinan, Anne; Nass, Catharie; Glynn, Simone A; Wright, David J; Kessler, Debra; Schlumpf, Karen S; Tu, Yongling; Smith, James W; Garratty, George
2008-01-01
Blood donation can be described as a prosocial behavior, and donors often cite prosocial reasons such as altruism, empathy, or social responsibility for their willingness to donate. Previous studies have not quantitatively evaluated these characteristics in donors or examined how they relate to donation frequency. As part of a donor motivation study, 12,064 current and lapsed donors answered questions used to create an altruistic behavior, empathetic concern, and social responsibility motivation score for each donor. Analysis of variance was used to compare mean scores by demographics and donor status and to determine the influence of each variable on the mean number of donations in the past 5 years. The mean score for each prosocial characteristic appeared high, with lower scores in male and younger donors. Higher altruistic behavior and social responsibility motivation scores were associated with increased past donation frequency, but the effects were minor. Empathetic concern was not associated with prior donation. The largest differences in prior donations were by age and donor status, with older and current donors having given more frequently. Most blood donors appear to have high levels of the primary prosocial characteristics (altruism, empathy, and social responsibility) commonly thought to be the main motivators for donation, but these factors do not appear to be the ones most strongly related to donation frequency. Traditional donor appeals based on these characteristics may need to be supplemented by approaches that address practical concerns like convenience, community safety, or personal benefit.
A Stochastic Simulator of a Blood Product Donation Environment with Demand Spikes and Supply Shocks
An, Ming-Wen; Reich, Nicholas G.; Crawford, Stephen O.; Brookmeyer, Ron; Louis, Thomas A.; Nelson, Kenrad E.
2011-01-01
The availability of an adequate blood supply is a critical public health need. An influenza epidemic or another crisis affecting population mobility could create a critical donor shortage, which could profoundly impact blood availability. We developed a simulation model for the blood supply environment in the United States to assess the likely impact on blood availability of factors such as an epidemic. We developed a simulator of a multi-state model with transitions among states. Weekly numbers of blood units donated and needed were generated by negative binomial stochastic processes. The simulator allows exploration of the blood system under certain conditions of supply and demand rates, and can be used for planning purposes to prepare for sudden changes in the public's health. The simulator incorporates three donor groups (first-time, sporadic, and regular), immigration and emigration, deferral period, and adjustment factors for recruitment. We illustrate possible uses of the simulator by specifying input values for an -week flu epidemic, resulting in a moderate supply shock and demand spike (for example, from postponed elective surgeries), and different recruitment strategies. The input values are based in part on data from a regional blood center of the American Red Cross during –. Our results from these scenarios suggest that the key to alleviating deficit effects of a system shock may be appropriate timing and duration of recruitment efforts, in turn depending critically on anticipating shocks and rapidly implementing recruitment efforts. PMID:21814550
A stochastic simulator of a blood product donation environment with demand spikes and supply shocks.
An, Ming-Wen; Reich, Nicholas G; Crawford, Stephen O; Brookmeyer, Ron; Louis, Thomas A; Nelson, Kenrad E
2011-01-01
The availability of an adequate blood supply is a critical public health need. An influenza epidemic or another crisis affecting population mobility could create a critical donor shortage, which could profoundly impact blood availability. We developed a simulation model for the blood supply environment in the United States to assess the likely impact on blood availability of factors such as an epidemic. We developed a simulator of a multi-state model with transitions among states. Weekly numbers of blood units donated and needed were generated by negative binomial stochastic processes. The simulator allows exploration of the blood system under certain conditions of supply and demand rates, and can be used for planning purposes to prepare for sudden changes in the public's health. The simulator incorporates three donor groups (first-time, sporadic, and regular), immigration and emigration, deferral period, and adjustment factors for recruitment. We illustrate possible uses of the simulator by specifying input values for an 8-week flu epidemic, resulting in a moderate supply shock and demand spike (for example, from postponed elective surgeries), and different recruitment strategies. The input values are based in part on data from a regional blood center of the American Red Cross during 1996-2005. Our results from these scenarios suggest that the key to alleviating deficit effects of a system shock may be appropriate timing and duration of recruitment efforts, in turn depending critically on anticipating shocks and rapidly implementing recruitment efforts.
31 CFR 800.403 - Deferral, rejection, or disposition of certain voluntary notices.
Code of Federal Regulations, 2010 CFR
2010-07-01
... REGULATIONS PERTAINING TO MERGERS, ACQUISITIONS, AND TAKEOVERS BY FOREIGN PERSONS Notice § 800.403 Deferral... acquisition by Company A, a foreign person, of the entire interest in Company X, a U.S. business. The notice...
Moore, Carmel; Sambrook, Jennifer; Walker, Matthew; Tolkien, Zoe; Kaptoge, Stephen; Allen, David; Mehenny, Susan; Mant, Jonathan; Di Angelantonio, Emanuele; Thompson, Simon G; Ouwehand, Willem; Roberts, David J; Danesh, John
2014-09-17
Ageing populations may demand more blood transfusions, but the blood supply could be limited by difficulties in attracting and retaining a decreasing pool of younger donors. One approach to increase blood supply is to collect blood more frequently from existing donors. If more donations could be safely collected in this manner at marginal cost, then it would be of considerable benefit to blood services. National Health Service (NHS) Blood and Transplant in England currently allows men to donate up to every 12 weeks and women to donate up to every 16 weeks. In contrast, some other European countries allow donations as frequently as every 8 weeks for men and every 10 weeks for women. The primary aim of the INTERVAL trial is to determine whether donation intervals can be safely and acceptably decreased to optimise blood supply whilst maintaining the health of donors. INTERVAL is a randomised trial of whole blood donors enrolled from all 25 static centres of NHS Blood and Transplant. Recruitment of about 50,000 male and female donors started in June 2012 and was completed in June 2014. Men have been randomly assigned to standard 12-week versus 10-week versus 8-week inter-donation intervals, while women have been assigned to standard 16-week versus 14-week versus 12-week inter-donation intervals. Sex-specific comparisons will be made by intention-to-treat analysis of outcomes assessed after two years of intervention. The primary outcome is the number of blood donations made. A key secondary outcome is donor quality of life, assessed using the Short Form Health Survey. Additional secondary endpoints include the number of 'deferrals' due to low haemoglobin (and other factors), iron status, cognitive function, physical activity, and donor attitudes. A comprehensive health economic analysis will be undertaken. The INTERVAL trial should yield novel information about the effect of inter-donation intervals on blood supply, acceptability, and donors' physical and mental well-being. The study will generate scientific evidence to help formulate blood collection policies in England and elsewhere. Current Controlled Trials ISRCTN24760606, 25 January 2012.
Code of Federal Regulations, 2010 CFR
2010-04-01
... allowed (but not required) to make up his or her missed contributions or elective deferrals. These makeup..., with the repayment period not to exceed five years. Makeup contributions or elective deferrals may only...
Kann, Benjamin H; Park, Henry S; Lester-Coll, Nataniel H; Yeboa, Debra N; Benitez, Viviana; Khan, Atif J; Bindra, Ranjit S; Marks, Asher M; Roberts, Kenneth B
2016-12-01
Postoperative radiotherapy to the craniospinal axis is standard-of-care for pediatric medulloblastoma but is associated with long-term morbidity, particularly in young children. With the advent of modern adjuvant chemotherapy strategies, postoperative radiotherapy deferral has gained acceptance in children younger than 3 years, although it remains controversial in older children. To analyze recent postoperative radiotherapy national treatment patterns and implications for overall survival in patients with medulloblastoma ages 3 to 8 years. Using the National Cancer Data Base, patients ages 3 to 8 years diagnosed as having histologically confirmed medulloblastoma in 2004 to 2012, without distant metastases, who underwent surgery and adjuvant chemotherapy with or without postoperative radiotherapy at facilities nationwide accredited by the Commission on Cancer were identified. Patients were designated as having "postoperative radiotherapy upfront" if they received radiotherapy within 90 days of surgery or "postoperative radiotherapy deferred" otherwise. Factors associated with postoperative radiotherapy deferral were identified using multivariable logistic regression. Overall survival (OS) was compared using Kaplan-Meier analysis with log-rank tests and multivariable Cox regression. Statistical tests were 2-sided. Postoperative radiotherapy utilization and overall survival. Among 816 patients, 123 (15.1%) had postoperative radiotherapy deferred, and 693 (84.9%) had postoperative radiotherapy upfront; 36.8% of 3-year-olds and 4.1% of 8-year-olds had postoperative radiotherapy deferred (P < .001). On multivariable logistic regression, variables associated with postoperative radiotherapy deferral were age (odds ratio [OR], 0.57 per year; 95% CI, 0.49-0.67 per year) and year of diagnosis (OR, 1.18 per year; 95% CI, 1.08-1.29 per year). On survival analysis, with median follow-up of 4.8 years, OS was improved for those receiving postoperative radiotherapy upfront vs postoperative radiotherapy deferred (5-year OS: 82.0% vs 63.4%; P < .001). On multivariable analysis, variables associated with poorer OS were postoperative radiotherapy deferral (hazards ratio [HR], 1.95; 95% CI, 1.15-3.31); stage M1-3 disease (HR, 1.86; 95% CI, 1.10-3.16), and low facility volume (HR, 1.75; 95% CI, 1.04-2.94). Our national database analysis reveals a higher-than-expected and increasing rate of postoperative radiotherapy deferral in children with medulloblastoma ages 3 to 8 years. The analysis suggests that postoperative radiotherapy deferral is associated with worse survival in this age group, even in the modern era of chemotherapy.
34 CFR 200.9 - Deferral of assessments.
Code of Federal Regulations, 2010 CFR
2010-07-01
... 34 Education 1 2010-07-01 2010-07-01 false Deferral of assessments. 200.9 Section 200.9 Education Regulations of the Offices of the Department of Education OFFICE OF ELEMENTARY AND SECONDARY EDUCATION, DEPARTMENT OF EDUCATION TITLE I-IMPROVING THE ACADEMIC ACHIEVEMENT OF THE DISADVANTAGED Improving Basic...
34 CFR 200.9 - Deferral of assessments.
Code of Federal Regulations, 2012 CFR
2012-07-01
... 34 Education 1 2012-07-01 2012-07-01 false Deferral of assessments. 200.9 Section 200.9 Education Regulations of the Offices of the Department of Education OFFICE OF ELEMENTARY AND SECONDARY EDUCATION, DEPARTMENT OF EDUCATION TITLE I-IMPROVING THE ACADEMIC ACHIEVEMENT OF THE DISADVANTAGED Improving Basic...
34 CFR 200.9 - Deferral of assessments.
Code of Federal Regulations, 2011 CFR
2011-07-01
... 34 Education 1 2011-07-01 2011-07-01 false Deferral of assessments. 200.9 Section 200.9 Education Regulations of the Offices of the Department of Education OFFICE OF ELEMENTARY AND SECONDARY EDUCATION, DEPARTMENT OF EDUCATION TITLE I-IMPROVING THE ACADEMIC ACHIEVEMENT OF THE DISADVANTAGED Improving Basic...
Go, Stephanie L; Lam, Cindy T Y; Lin, Yahui T; Wong, Deborah J; Lazo-Langner, Alejandro; Chin-Yee, Ian
2011-04-01
In Canada, all men who have sex with men (MSM) are indefinitely deferred from donating blood. The purpose of this study was to determine the acceptability of an alternative behavior-based donor health questionnaire among Canadian university students. Further we sought to determine the perception of blood safety associated with specific risk behaviors. Questions found on the Canadian Blood Services' donor health assessment questionnaire as well as from studies assessing high-risk behavior for human immunodeficiency virus infection were included. For each question participants were asked to rate the acceptability, comfort in answering, perceived effect on blood safety, and whether the question would deter them from donating blood. Data were analyzed using nonparametric tests. A total of 741 students participated in the study. Questions regarding sexual practices of the donor were rated less important for blood safety compared to those assessing for sexually transmitted infections, sex for money, and injection drug use (30%-62% vs. 69%-95% unsafe). A total of 24.4% of students rated both questions on MSM status and a behavior-based alternative as equally unacceptable. We found an inverse correlation between perception of safety and acceptability of questions. Our findings suggest that a behavior-based screening modification is unlikely to change opinions or satisfy those who object to the MSM current policy in place. Acceptability of these questions might be related to a poor understanding of the effect of sexual practices on blood supply safety. © 2010 American Association of Blood Banks.
Federal Register 2010, 2011, 2012, 2013, 2014
2011-11-18
... Equipment C. Addressing Deferrals 1. Emergency Power Generator UST Systems 2. Airport Hydrant Fuel.... Maintain Deferral for USTs Containing Radioactive Material and Emergency Generator UST Systems at Nuclear... (air, water, 481, 483-486, 48811. truck, transit, pipeline, and airport operations). Communications and...
45 CFR 201.15 - Deferral of claims for Federal financial participation.
Code of Federal Regulations, 2012 CFR
2012-10-01
... 45 Public Welfare 2 2012-10-01 2012-10-01 false Deferral of claims for Federal financial participation. 201.15 Section 201.15 Public Welfare Regulations Relating to Public Welfare OFFICE OF FAMILY ASSISTANCE (ASSISTANCE PROGRAMS), ADMINISTRATION FOR CHILDREN AND FAMILIES, DEPARTMENT OF HEALTH AND HUMAN...
45 CFR 201.15 - Deferral of claims for Federal financial participation.
Code of Federal Regulations, 2013 CFR
2013-10-01
... 45 Public Welfare 2 2013-10-01 2012-10-01 true Deferral of claims for Federal financial participation. 201.15 Section 201.15 Public Welfare Regulations Relating to Public Welfare OFFICE OF FAMILY ASSISTANCE (ASSISTANCE PROGRAMS), ADMINISTRATION FOR CHILDREN AND FAMILIES, DEPARTMENT OF HEALTH AND HUMAN...
45 CFR 201.15 - Deferral of claims for Federal financial participation.
Code of Federal Regulations, 2014 CFR
2014-10-01
... 45 Public Welfare 2 2014-10-01 2012-10-01 true Deferral of claims for Federal financial participation. 201.15 Section 201.15 Public Welfare Regulations Relating to Public Welfare OFFICE OF FAMILY ASSISTANCE (ASSISTANCE PROGRAMS), ADMINISTRATION FOR CHILDREN AND FAMILIES, DEPARTMENT OF HEALTH AND HUMAN...
76 FR 31543 - Controlled Groups; Deferral of Losses; Hearing
Federal Register 2010, 2011, 2012, 2013, 2014
2011-06-01
... Controlled Groups; Deferral of Losses; Hearing AGENCY: Internal Revenue Service (IRS), Treasury. ACTION: Notice of public hearing on proposed rulemaking. SUMMARY: This document provides notice of public hearing... public hearing is being held on Wednesday, August 3, 2011, at 10 a.m. The IRS must receive outlines of...
76 FR 30052 - Controlled Groups; Deferral of Losses; Correction
Federal Register 2010, 2011, 2012, 2013, 2014
2011-05-24
... DEPARTMENT OF THE TREASURY Internal Revenue Service 26 CFR Part 1 [REG-118761-09] RIN 1545-BI92 Controlled Groups; Deferral of Losses; Correction AGENCY: Internal Revenue Service (IRS), Treasury. ACTION... deferred losses on the sale or exchange of property between members of a controlled group. FOR FURTHER...
Federal Register 2010, 2011, 2012, 2013, 2014
2011-09-28
... FEDERAL ACCOUNTING STANDARDS ADVISORY BOARD Notice of Issuance Technical Bulletin 2011-2, Extended Deferral of the Effective Date of Technical Bulletin 2006-1 AGENCY: Federal Accounting Standards Advisory... hereby given that the Federal Accounting Standards Advisory Board (FASAB) has issued Technical Bulletin...
29 CFR 1601.13 - Filing; deferrals to State and local agencies.
Code of Federal Regulations, 2010 CFR
2010-07-01
... State and local agencies. The Commission shall endeavor to maintain close communication with the State... deemed to be filed with the Commission as follows: (A) Where the document on its face constitutes a... 29 Labor 4 2010-07-01 2010-07-01 false Filing; deferrals to State and local agencies. 1601.13...
76 FR 22336 - Controlled Groups; Deferral of Losses
Federal Register 2010, 2011, 2012, 2013, 2014
2011-04-21
... intercompany loss when B recognizes a corresponding gain. For example, if S sells 30 percent of T's stock to B... occurrence of either of two events. The deferred loss is taken into account to the extent of any... Controlled Groups; Deferral of Losses AGENCY: Internal Revenue Service (IRS), Treasury. ACTION: Notice of...
78 FR 48230 - Proposed Collection; Comment Request for Regulation Project
Federal Register 2010, 2011, 2012, 2013, 2014
2013-08-07
... provide rules regarding the deferral of gain on a partnership's sale of qualified small business stock and deferral of gain on a partner's sale of qualified small business stock distributed by a partnership. The... functions of the agency, including whether the information shall have practical utility; (b) the accuracy of...
Federal Register 2010, 2011, 2012, 2013, 2014
2011-07-12
... FEDERAL ACCOUNTING STANDARDS ADVISORY BOARD Notice of Issuance of Statement of Federal Financial Accounting Standards 41, Deferral of the Effective Date of SFFAS 38, Accounting for Federal Oil and Gas Resources, and Issuance of Final Technical Bulletin 2011-1, Accounting for Federal Natural Resources Other...
Inactivation of prion proteins via covalent grafting with methoxypoly(ethylene glycol).
Scott, Mark D
2006-01-01
Transmissible spongiform encephalopathies (TSE) such as bovine spongiform encephalitis (BSE), Creutzfeld-Jakob disease (CJD) as well as other proteinaceous infectious particles (prions) mediated diseases have emerged as a significant concern in transfusion medicine. This concern is derived from both the disease causing potential of prion contaminated blood products but also due to tremendous impact of the active deferral of current and potential blood donors due to their extended stays in BSE prevalent countries (e.g., the United Kingdom). To date, there are no effective means by which infectious prion proteins can be inactivated in cellular and acellular blood products. Based on current work on the covalent grafting of methoxypoly(ethylene glycol) [mPEG] to proteins, viruses, and anuclear, and nucleated cells, it is hypothesized that the conversion of the normal PrP protein to its mutant conformation can be prevented by the covalent grafting of mPEG to the mutant protein. Inactivation of infective protein particles (prions) in both cellular blood products as well as cell free solutions (e.g., clotting factors) could be of medical/commercial value. It is hypothesized that consequent to the covalent modification of donor-derived prions with mPEG the requisite nucleation of the normal and mutant PrP proteins is inhibited due to the increased solubility of the modified mutant PrP and that the conformational conversion arising from the mutant PrP is prevented due to obscuration of protein charge by the heavily hydrated and neutral mPEG polymers, as well as by direct steric hindrance of the interaction due to the highly mobile polymer graft.
38 CFR 21.42 - Deferral or extension of the basic period of eligibility.
Code of Federal Regulations, 2014 CFR
2014-07-01
... will begin or resume on the date a Counseling Psychologist (CP) or Vocational Rehabilitation Counselor (VRC) notifies the veteran in writing that the CP or VRC has determined, based on the evidence of...
38 CFR 21.42 - Deferral or extension of the basic period of eligibility.
Code of Federal Regulations, 2013 CFR
2013-07-01
... will begin or resume on the date a Counseling Psychologist (CP) or Vocational Rehabilitation Counselor (VRC) notifies the veteran in writing that the CP or VRC has determined, based on the evidence of...
38 CFR 21.42 - Deferral or extension of the basic period of eligibility.
Code of Federal Regulations, 2011 CFR
2011-07-01
... will begin or resume on the date a Counseling Psychologist (CP) or Vocational Rehabilitation Counselor (VRC) notifies the veteran in writing that the CP or VRC has determined, based on the evidence of...
38 CFR 21.42 - Deferral or extension of the basic period of eligibility.
Code of Federal Regulations, 2010 CFR
2010-07-01
... will begin or resume on the date a Counseling Psychologist (CP) or Vocational Rehabilitation Counselor (VRC) notifies the veteran in writing that the CP or VRC has determined, based on the evidence of...
38 CFR 21.42 - Deferral or extension of the basic period of eligibility.
Code of Federal Regulations, 2012 CFR
2012-07-01
... will begin or resume on the date a Counseling Psychologist (CP) or Vocational Rehabilitation Counselor (VRC) notifies the veteran in writing that the CP or VRC has determined, based on the evidence of...
A general framework for the solvatochromism of pyridinium phenolate betaine dyes
NASA Astrophysics Data System (ADS)
Rezende, Marcos Caroli; Aracena, Andrés
2013-02-01
A general framework for the solvatochromic behavior of pyridinium phenolate betaine dyes is presented, based on the variations with the medium of the electrophilic Fukui functions of their electron-pair donor and acceptor moieties. The model explains the ‘anomalous' solvatochromic behavior of large betaines, which change their behavior from negative to inverted, when electron-pair donor and acceptor groups are separated by a conjugated chain of variable size.
26 CFR 1.402(g)-1 - Limitation on exclusion for elective deferrals.
Code of Federal Regulations, 2012 CFR
2012-04-01
....402(g)-1 Section 1.402(g)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY.... § 1.402(g)-1 Limitation on exclusion for elective deferrals. (a) In general. The excess of an... income for the taxable year on account of section 402(a)(8) (before applying the limits of section 402(g...
Code of Federal Regulations, 2014 CFR
2014-07-01
... to performance or repayment under a scholarship agreement? 386.42 Section 386.42 Education... performance or repayment under a scholarship agreement? To obtain a deferral or exception to performance or repayment under a scholarship agreement, a scholar shall provide the following: (a) Written application. A...
Code of Federal Regulations, 2010 CFR
2010-07-01
... exception to performance or repayment under a scholarship agreement? 386.42 Section 386.42 Education... performance or repayment under a scholarship agreement? To obtain a deferral or exception to performance or repayment under a scholarship agreement, a scholar shall provide the following: (a) Written application. A...
Code of Federal Regulations, 2011 CFR
2011-07-01
... to performance or repayment under a scholarship agreement? 386.42 Section 386.42 Education... performance or repayment under a scholarship agreement? To obtain a deferral or exception to performance or repayment under a scholarship agreement, a scholar shall provide the following: (a) Written application. A...
Code of Federal Regulations, 2012 CFR
2012-07-01
... exception to performance or repayment under a scholarship agreement? 386.42 Section 386.42 Education... performance or repayment under a scholarship agreement? To obtain a deferral or exception to performance or repayment under a scholarship agreement, a scholar shall provide the following: (a) Written application. A...
Code of Federal Regulations, 2013 CFR
2013-07-01
... exception to performance or repayment under a scholarship agreement? 386.42 Section 386.42 Education... performance or repayment under a scholarship agreement? To obtain a deferral or exception to performance or repayment under a scholarship agreement, a scholar shall provide the following: (a) Written application. A...
Federal Register 2010, 2011, 2012, 2013, 2014
2010-05-10
...), high thread count (180 threads per inch and higher) fabrics under FTZ procedures based on a tolling... process any other customer- owned fabric under FTZ procedures. Subzone status would allow for deferral of...
78 FR 68735 - Reduction or Suspension of Safe Harbor Contributions
Federal Register 2010, 2011, 2012, 2013, 2014
2013-11-15
... forth in section 401(k)(3), called the actual deferral percentage (ADP) test, or one of the design-based... design-based safe harbor method under which a CODA is treated as satisfying the ADP test if the... the design-based alternatives in section 401(m)(10), 401(m)(11), or 401(m)(12). The ACP test in...
France, Janis L.; France, Christopher R.; Carlson, Bruce W.; Kessler, Debra A.; Rebosa, Mark; Shaz, Beth H.; Madden, Katrala; Carey, Patricia M.
2015-01-01
First-time blood donors are essential to the US donor pool, providing nearly a third of all donations. Unfortunately, there are a wide variety of obstacles to repeat donation and new donors are extremely difficult to retain. Because each donor experiences a unique set of deterrents, we developed a post-donation interview based on motivational interview principles in order to flexibly address individual barriers. The primary aim of this randomized clinical trial is to examine retention of first-time, group O blood donors who are randomly assigned to receive either a telephone-delivered interview with motivational and action planning components or a standard-of-care control call approximately six weeks after their donation. Measures of donation attitude, perceived behavioral control, intention, and motivational autonomy will be measured before and after the telephone contact using online surveys, and donation attempts will be tracked for one year using blood center donor databases. We hypothesize that, compared to controls, donors who receive the telephone interview will be more likely to make a donation attempt over the following year. In addition, we will examine possible mechanisms of action of the interview using key predictors of donation behavior as described by Self Determination Theory (i.e., motivational autonomy) and the Theory of Planned Behavior (i.e., attitude, perceived behavioral control, and intention). Results of this intervention may help to support a novel strategy to enhance retention of selected blood donors in an effort to better meet the nation’s blood supply needs. PMID:26247570
Haemophilus influenzae Type b Disease and Vaccine Booster Dose Deferral, United States, 1998–2009
Briere, Elizabeth C.; Jackson, Michael; Shah, Shetul G.; Cohn, Amanda C.; Anderson, Raydel D.; MacNeil, Jessica R.; Coronado, Fatima M.; Mayer, Leonard W.; Clark, Thomas A.; Messonnier, Nancy E.
2015-01-01
BACKGROUND Since the introduction of effective vaccines, the incidence of invasive Haemophilus influenzae type b (Hib) disease among children <5 years of age has decreased by 99% in the United States. In response to a limited vaccine supply that began in 2007, Hib booster doses were deferred for 18 months. METHODS We reviewed national passive and active surveillance (demographic and serotype) and vaccination status data for invasive H. influenzae disease in children aged <5 years before (1998–2007) and during (2008–2009) the vaccine shortage years to assess the impact of the vaccine deferral on Hib disease. We estimated the average annual number of Hib cases misclassified as unknown (not completed or missing) serotype. RESULTS From 1998 to 2007 and 2008 to 2009, the annual average incidence of Hib disease per 100 000 population was 0.2 and 0.18, respectively; no significant difference in incidence was found by age group, gender, or race. Among Hib cases in both time periods, most were unvaccinated or too young to have received Hib vaccine. During 2001 to 2009, there were <53 Hib cases per year, with an estimated 6 to 12 Hib cases misclassified as unknown serotype. CONCLUSIONS The booster deferral did not have a significant impact on the burden of invasive Hib disease in children <5 years of age. Continued surveillance and serotype data are important to monitor changes in Hib incidence, especially during vaccine deferrals. Hib booster deferral is a reasonable short-term approach to a Hib vaccine shortage. PMID:22869828
Federal Register 2010, 2011, 2012, 2013, 2014
2012-11-16
... Implementation Plan (SIP) that would incorporate EPA's ``Biomass Deferral'' into the Maryland SIP. At the request... comments. B. Email: cox[email protected] . C. Mail: EPA-R03-OAR-2012-0305, Ms. Kathleen Cox, Associate Director, Office of Permits and Air Toxics, Mailcode 3AP10, U.S. Environmental Protection Agency, Region...
26 CFR 1.402(g)-1 - Limitation on exclusion for elective deferrals.
Code of Federal Regulations, 2011 CFR
2011-04-01
.... 1.402(g)-1 Section 1.402(g)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY.... § 1.402(g)-1 Limitation on exclusion for elective deferrals. (a) In general. The excess of an... income for the taxable year on account of section 402(a)(8) (before applying the limits of section 402(g...
26 CFR 1.402(g)-1 - Limitation on exclusion for elective deferrals.
Code of Federal Regulations, 2013 CFR
2013-04-01
.... 1.402(g)-1 Section 1.402(g)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY.... § 1.402(g)-1 Limitation on exclusion for elective deferrals. (a) In general. The excess of an... income for the taxable year on account of section 402(a)(8) (before applying the limits of section 402(g...
26 CFR 1.402(g)-1 - Limitation on exclusion for elective deferrals.
Code of Federal Regulations, 2014 CFR
2014-04-01
.... 1.402(g)-1 Section 1.402(g)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY.... § 1.402(g)-1 Limitation on exclusion for elective deferrals. (a) In general. The excess of an... income for the taxable year on account of section 402(a)(8) (before applying the limits of section 402(g...
26 CFR 1.402(g)-0 - Limitation on exclusion for elective deferrals, table of contents.
Code of Federal Regulations, 2010 CFR
2010-04-01
..., table of contents. 1.402(g)-0 Section 1.402(g)-0 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT... Plans, Etc. § 1.402(g)-0 Limitation on exclusion for elective deferrals, table of contents. This section contains the captions that appear in § 1.402(g)-1. § 1.402(g)-1Limitation on exclusion for elective...
26 CFR 1.402(g)-0 - Limitation on exclusion for elective deferrals, table of contents.
Code of Federal Regulations, 2014 CFR
2014-04-01
..., table of contents. 1.402(g)-0 Section 1.402(g)-0 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT..., Stock Bonus Plans, Etc. § 1.402(g)-0 Limitation on exclusion for elective deferrals, table of contents. This section contains the captions that appear in § 1.402(g)-1. § 1.402(g)-1Limitation on exclusion for...
26 CFR 1.402(g)-0 - Limitation on exclusion for elective deferrals, table of contents.
Code of Federal Regulations, 2013 CFR
2013-04-01
..., table of contents. 1.402(g)-0 Section 1.402(g)-0 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT..., Stock Bonus Plans, Etc. § 1.402(g)-0 Limitation on exclusion for elective deferrals, table of contents. This section contains the captions that appear in § 1.402(g)-1. § 1.402(g)-1Limitation on exclusion for...
26 CFR 1.402(g)-0 - Limitation on exclusion for elective deferrals, table of contents.
Code of Federal Regulations, 2012 CFR
2012-04-01
..., table of contents. 1.402(g)-0 Section 1.402(g)-0 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT..., Stock Bonus Plans, Etc. § 1.402(g)-0 Limitation on exclusion for elective deferrals, table of contents. This section contains the captions that appear in § 1.402(g)-1. § 1.402(g)-1Limitation on exclusion for...
26 CFR 1.402(g)-0 - Limitation on exclusion for elective deferrals, table of contents.
Code of Federal Regulations, 2011 CFR
2011-04-01
..., table of contents. 1.402(g)-0 Section 1.402(g)-0 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT..., Stock Bonus Plans, Etc. § 1.402(g)-0 Limitation on exclusion for elective deferrals, table of contents. This section contains the captions that appear in § 1.402(g)-1. § 1.402(g)-1Limitation on exclusion for...
Code of Federal Regulations, 2010 CFR
2010-04-01
... yachts imported for sale at United States boat shows. 113.75 Section 113.75 Customs Duties U.S. CUSTOMS... Customs Bond Conditions § 113.75 Bond conditions for deferral of duty on large yachts imported for sale at....C. 1484b for a dutiable large yacht imported for sale at a United States boat show must conform to...
Code of Federal Regulations, 2011 CFR
2011-04-01
... yachts imported for sale at United States boat shows. 113.75 Section 113.75 Customs Duties U.S. CUSTOMS... Customs Bond Conditions § 113.75 Bond conditions for deferral of duty on large yachts imported for sale at....C. 1484b for a dutiable large yacht imported for sale at a United States boat show must conform to...
Cogeneration deferral rate and preemption under PURPA: a legal note
DOE Office of Scientific and Technical Information (OSTI.GOV)
Spiewak, S.
The Public Utility Regulatory Policies Act (PURPA) is designed to benefit the ratepayer by using utility facilities as efficiently as possible. It does not ask states to encourage cogeneration or small power projects at the expense of utility efficiency. A legal analysis of the wording of PURPA shows that a deferral rate designed to retain customers who would otherwise turn to cogeneration or independent power supplies is legally consistent with PURPA's intent.
Code of Federal Regulations, 2014 CFR
2014-04-01
... yachts imported for sale at United States boat shows. 113.75 Section 113.75 Customs Duties U.S. CUSTOMS... United States boat shows. A bond for the deferral of entry completion and duty deposit pursuant to 19 U.S.C. 1484b for a dutiable large yacht imported for sale at a United States boat show must conform to...
Code of Federal Regulations, 2012 CFR
2012-04-01
... yachts imported for sale at United States boat shows. 113.75 Section 113.75 Customs Duties U.S. CUSTOMS... United States boat shows. A bond for the deferral of entry completion and duty deposit pursuant to 19 U.S.C. 1484b for a dutiable large yacht imported for sale at a United States boat show must conform to...
Code of Federal Regulations, 2013 CFR
2013-04-01
... yachts imported for sale at United States boat shows. 113.75 Section 113.75 Customs Duties U.S. CUSTOMS... United States boat shows. A bond for the deferral of entry completion and duty deposit pursuant to 19 U.S.C. 1484b for a dutiable large yacht imported for sale at a United States boat show must conform to...
Davison, K L; Conti, S; Brailsford, S R
2013-07-01
The risk of transfusion-transmitted HIV infection under (i) permanent exclusion and (ii) 12-month deferral of MSM in England and Wales during 2005-2007 was estimated. Assuming equal compliance with both scenarios, estimated risk under a 12-month deferral (0.228/million donations [range 0·168-0·306/million donations]) was only marginally greater (0·5%) than that under lifetime exclusion (0·227/million donations [range 0·157-0.318/million donations]), with one extra-HIV infectious donation every 455 years. Poorer compliance of MSM with a 12-month deferral would be expected to increase the estimated risk, whereas improved compliance could decrease risk by up to 29·1%. © 2013 International Society of Blood Transfusion.
Wevers, Anne; Wigboldus, Daniël H J; van Baaren, Rick; Veldhuizen, Ingrid J T
2014-03-01
For blood establishments it is important that blood donors return for a donation. Past research has stressed the importance of theory of planned behavior (TPB) on return behavior, but self-identity (SI) and organizational variables (OVs) might play a role as well. This study added SI and OVs to the TPB to identify the determinants for return behavior. Whole blood donors (n = 2005) completed a questionnaire assessing TPB, SI, and OVs. OVs contained "perceived satisfaction with the blood bank" and "feeling pressure from the blood bank to donate blood." Return behavior over the past 2 years was dichotomized as low return (0%-50%) versus high return (51%-100%). Logistic regression analyses assessed the effects of TPB, SI, and OVs on high return, separately for occasional donors (two to 10 lifetime donations) and multigallon donors (>10 lifetime donations). Results showed that, for all donors, affective attitude was positively associated with return behavior, whereas pressure to donate blood was negatively associated with return behavior. The point estimates of self-efficacy, SI, and perceived satisfaction are high for multigallon donors, but do not reach significance. For all donors, positive feelings about donating blood stimulate return behavior, while experiencing a pressure to donate blood emanating from the blood bank was not beneficial. Results suggest that multigallon donors are more stimulated to return when they score higher on self-efficacy, SI, and perceived satisfaction. Interventions aiming at donor retention need to be carefully formulated to avoid negative effects of feeling pressure to donate blood. © 2013 American Association of Blood Banks.
26 CFR 1.7519-1T - Required payments for entities electing not to have required year (temporary).
Code of Federal Regulations, 2011 CFR
2011-04-01
.... Example 1. D, a partnership, is owned 10 percent by a C corporation with a September 30 taxable year and... $10,000 are deductible during the deferral period of the base year. Based on these facts, D has net... year $10,000 $5,000 Net base year income $40,000 Example 4. E is a C corporation that has historically...
Systems biology of stored blood cells: can it help to extend the expiration date?
Paglia, Giuseppe; Palsson, Bernhard Ø; Sigurjonsson, Olafur E
2012-12-05
With increasingly stringent regulations regarding deferral and elimination of blood donors it will become increasingly important to extend the expiration date of blood components beyond the current allowed storage periods. One reason for the storage time limit for blood components is that platelets and red blood cells develop a condition called storage lesions during their storage in plastic blood containers. Systems biology provides comprehensive bio-chemical descriptions of organisms through quantitative measurements and data integration in mathematical models. The biological knowledge for a target organism can be translated in a mathematical format and used to compute physiological properties. The use of systems biology represents a concrete solution in the study of blood cell storage lesions, and it may open up new avenues towards developing better storage methods and better storage media, thereby extending the storage period of blood components. This article is part of a Special Issue entitled: Integrated omics. Copyright © 2012 Elsevier B.V. All rights reserved.
Federal Register 2010, 2011, 2012, 2013, 2014
2012-09-07
... consider your comment. Electronic files should avoid the use of special characters, any form of encryption... copy form. Publicly available docket materials are available either electronically in www.regulations... biologically-based materials other than fossil fuels and mineral sources of carbon. Examples of ``biogenic CO 2...
2015-10-08
Management of Waiver and Deferral Requests Visit us at www.dodig.mil Objective Our objective for this audit was to evaluate the Space and Naval Warfare...We conducted this audit in accordance with generally accepted government auditing standards. We considered management comments on a draft of...OFFICIAL USE ON Y Introduction DODIG-2016-003 │ 1 Introduction Objective Our objective for this audit was to evaluate the Space and Naval Warfare
Breast milk donation: women's donor experience.
Alencar, Lucienne Christine Estevez de; Seidl, Eliane Maria Fleury
2009-02-01
To describe the characteristics of donation behavior and identify reasons, beliefs and feelings relative to this practice, based on the reports of donor women. Personal and social-environmental aspects, which seem to affect donation behavior in donors and former donors, were also investigated. An exploratory, descriptive and cross-sectional study was carried out with women donors at two breast-milk banks within the public health system of the Brazilian Federal District. Data was collected from July to September 2005. The participants were 36 women, aged 14 to 33 years (average=24.78; SD=5.22), with different levels of schooling, 58.3% of which were first-time mothers. Data gathering was based on interviews carried out during home visits. In addition to descriptive statistical analyses of quantitative data, a qualitative data categorical analysis was also performed. The most frequently reported reasons for donating breast milk were altruism and excess milk production. The most frequent time interval for donation was 13 days after delivery. Contact by phone with the milk bank was the most common means of communication used by the majority of participants (n=22) to obtain information that enabled the donating process. Psychosocial aspects identified and the experience of donors can contribute to the empowerment of the formal and informal social donation-support network, in addition to serving as a driver for the implementation of technical and policy strategies in promoting future donation practices.
Chantasart, Doungdaw; Chootanasoontorn, Siriwan; Suksiriworapong, Jiraphong; Li, S Kevin
2015-10-01
As a continuing effort to understand the skin permeation behavior of weak acids and bases, the objectives of the present study were to evaluate skin permeation of nonsteroidal anti-inflammatory drugs (NSAIDs) under the influence of pH, investigate the mechanism of pH effect, and examine a previous hypothesis that the effective skin pH for drug permeation is different from donor solution pH. In vitro permeability experiments were performed in side-by-side diffusion cells with diclofenac, ibuprofen, flurbiprofen, ketoprofen, and naproxen and human skin. The donor solution pH significantly affected skin permeation of NSAIDs, whereas no effect of the receiver pH was observed. Similar to previous observations, the apparent permeability coefficient versus donor solution pH relationships deviated from the predictions (fractions of unionized NSAIDs) according to the acid/base theory. The influences of the viable epidermis barrier, polar pathway transport, ion permeation across skin, and effective skin pH were investigated. The effective pH values for skin permeation determined using the NSAIDs (weak acids) in this study were different from those obtained previously with a weak base at the same donor solution pH conditions, suggesting that the observed permeability-pH relationships could not be explained solely by possible pH differences between skin and donor solution. © 2015 Wiley Periodicals, Inc. and the American Pharmacists Association.
DiCenzo, Jodi
2007-01-01
Behavioral research has made important, relevant contributions to retirement saving and investing. This work has cast a new light on participant behavior and its underpinnings: By and large, individuals are inert--with good intentions, poor follow-through, and bounded rationality. Loss aversion and decision-making biases often lead to unfortunate outcomes, including a poorly funded retirement. Further, behavioral economists have demonstrated that education and communication programs alone may not be effective in changing behavior. Instead, with their behavioral insights, they have offered new retirement plan design alternatives and empirically tested their efficacy in overcoming identified suboptimal behavior. These efforts are helping to pave a path of least resistance that should lead to greater retirement security. The Pension Protection Act of 2006 appears to support these alternatives by providing incentives to plan sponsors that implement automatic features such as automatic enrollment and deferral rate escalation. It also allows plan sponsors to choose more aggressive investment defaults. Perhaps implicit in this support is some advice to sponsors to accept participant behavior and to think more about changing their own by embracing automatic plan features.
26 CFR 1.1001-3 - Modifications of debt instruments.
Code of Federal Regulations, 2010 CFR
2010-04-01
..., interest will compound at a rate of 12 percent. The exercise of the option, which results in the deferral... deferred, interest will compound at a rate 150 basis points greater than the stated rate of interest. (ii... annual resetting of the interest rate based on the value of an index or a specified increase in the...
The value of area-based analyses of donation patterns for recruitment strategies.
James, Adelbert B; Josephson, Cassandra D; Shaz, Beth H; Schreiber, George B; Hillyer, Christopher D; Roback, John D
2014-12-01
Lack of ready access to a donation site may be a potential barrier to or influence the frequency of blood donations. In this study, we applied geographic analysis to blood donor behavior and use of different donation sites. The study population consisted of blood donors who gave whole blood in Georgia between 2004 and 2008. Zip code, city, and county of donor's residence were matched with the addresses of their donation sites. Donors were dichotomized as either nonmetro Atlanta or metro Atlanta residents. Six donation site categories were defined: donation within the same or a different zip code, within the same or a different city, and within the same or a different county. Logistic regression was used to compare donations by zip code, city, and county. The study population consisted of 402,692 blood donors who donated 1,147,442 whole blood units between 2004 and 2008, more than half of whom (56.4%) resided in the metro Atlanta area. The majority of donors were white (75.0%) and female (55.7%). In nonmetro Atlanta, repeat donors were more likely to have donated at fixed sites (p < 0.001). In metro Atlanta, repeat donors were more likely to have donated at a mobile site than at a fixed site (p < 0.001). Geographic and demographic differences in blood donation patterns exist. The locations of donor residences and blood donation sites influence donor behaviors. Understanding the geographic influence on donation patterns provides an important tool for optimizing donor recruitment strategies. © 2014 AABB.
Trotter, Patrick B; Summers, Dominic M; Robb, Matthew; Hulme, William; Ushiro-Lumb, Ines; Watson, Christopher J E; Neuberger, James; Bradley, J Andrew
2017-07-01
Deceased organ donors are routinely screened for behaviors that increase the risk of transmissible blood-borne viral (BBV) infection, but the impact of this information on organ donation and transplant outcome is not well documented. Our aim was to establish the impact of such behavior on organ donation and utilization, as well transplant recipient outcomes. We identified all UK deceased organ donors from 2003 to 2015 with a disclosed history of increased risk behavior (IRB) including intravenous drug use (IVDU), imprisonment and increased risk sexual behavior. Of 17 262 potential donors, 659 (3.8%) had IRB for BBV and 285 (1.7%) were seropositive for BBV, of whom half had a history of IRB (mostly IVDU [78.5%]). Of actual donors with IRB, 393 were seronegative for viral markers at time of donation. A history of recent IVDU was associated with fewer potential donors proceeding to become actual organ donors (64% vs 75%, P = 0.007). Donors with IRB provided 1091 organs for transplantation (624 kidneys and 467 other organs). Transplant outcome was similar in recipients of organs from donors with and without IRB. There were 3 cases of unexpected hepatitis C virus transmission, all from an active IVDU donor who was hepatitis C virus seronegative at time of donation, but was found to be viremic on retrospective testing. Donors with a history of IRB provide a valuable source of organs for transplantation with good transplant outcomes and there is scope for increasing the use of organs from such donors.
Determinants of return behavior: a comparison of current and lapsed donors.
Germain, Marc; Glynn, Simone A; Schreiber, George B; Gélinas, Stéphanie; King, Melissa; Jones, Mike; Bethel, James; Tu, Yongling
2007-10-01
There is a need to identify factors explaining why some people stop donating blood. A random mail survey of first-time (FT) and repeat (RPT) current (donating within 6 months before survey) and lapsed (donating >2 years prior) donors was conducted. The self-administered questionnaire included questions on personal, social, and behavioral characteristics. Among 1280 current and 1672 lapsed donors with valid addresses, the participation rate was 66.8 and 39.2 percent, respectively. In FT donors, the odds of lapsing increased with education (odds ratio [OR], 2.18; 95% confidence interval [CI], 1.34-3.55 for college or higher vs. Grade 12 or less education). Lapsed FT donors were more often asked to donate (OR, 1.89; 95% CI, 1.32-2.70) and had less interest in incentives (p < 0.001) than current FT donors. In RPT donors, lapsed status was associated with being younger (p < 0.001) and female (OR, 1.19; 95% CI, 1.00-1.42). Lapsed status was inversely associated with satisfaction with the last donation experience in both FT (p = 0.043) and RPT (p < 0.001) donors. Lapsed and current donors did not differ in perceived need for blood, personal transfusion experience, or mean reported altruistic behavior score. A positive donation experience appears to be a major determinant of donor return behavior. Lapsed donors do not appear, on average, to engage in fewer altruistic behaviors than currently active donors. Retention marketing strategies that appeal solely to altruistic values need to be further evaluated for their effectiveness.
Long-term return behavior of Chinese whole blood donors.
Guo, Nan; Wang, Jingxing; Yu, Qilu; Yang, Tonghan; Dong, Xiangdong; Wen, Guoxin; Tiemuer, Mei-hei-li; Li, Julin; He, Weilan; Lv, Yunlai; Ma, Hongli; Wen, Xiuqiong; Huang, Mei; Ness, Paul; Liu, Jing; Wright, David J; Nelson, Kenrad; Shan, Hua
2013-09-01
It is important to understand donor return behavior to maintain sufficient numbers of blood donors in developing countries where blood supplies are often inadequate. A total of 54,267 whole blood (WB) donors who donated between January 1 and March 31, 2008, at the five blood centers in China were followed for 2.5 years. Logistic regression was conducted to identify factors associated with their return behavior. A recurrent-event Cox proportional-hazard model was used to evaluate the overall effect of demographic variables and return behavior among first-time donors. Donors with previous donation history were more likely to return and the number of previous returns was positively associated with future return (odds ratios, 3.31, 4.82, and 8.16 for one, two to three, and more than three times compared to none). Thirty-four percent of donors (first-time donor, 21%; repeat donor, 54%) made at least one return donation, with 14% returning in the first 9 months. The multivariable logistic regression model for all WB donors and the Cox proportional hazard model for first-time donors showed consistent predictors for return: female sex, older age (≥ 25 years), larger volume (300 or 400 mL), and donating in satellite collection site. Encouraging first-time donors to make multiple donations is important for keeping adequate blood supply. The finding that first-time and repeat donors shared the same predictors for return indicates that retention strategies on repeat donors may be effective on first-time donors. Studies on motivators and barriers to return are needed, so that successful retention strategies can be tailored. © 2013 American Association of Blood Banks.
NASA Astrophysics Data System (ADS)
Samanta, Arup; Muruganathan, Manoharan; Hori, Masahiro; Ono, Yukinori; Mizuta, Hiroshi; Tabe, Michiharu; Moraru, Daniel
2017-02-01
Quantum dots formed by donor-atoms in Si nanodevices can provide a breakthrough for functionality at the atomic level with one-by-one control of electrons. However, single-electron effects in donor-atom devices have only been observed at low temperatures mainly due to the low tunnel barriers. If a few donor-atoms are closely coupled as a molecule to form a quantum dot, the ground-state energy level is significantly deepened, leading to higher tunnel barriers. Here, we demonstrate that such an a-few-donor quantum dot, formed by selective conventional doping of phosphorus (P) donors in a Si nano-channel, sustains Coulomb blockade behavior even at room temperature. In this work, such a quantum dot is formed by 3 P-donors located near the center of the selectively-doped area, which is consistent with a statistical analysis. This finding demonstrates practical conditions for atomic- and molecular-level electronics based on donor-atoms in silicon nanodevices.
Robinson, Natalie G; Masser, Barbara M; White, Katherine M; Hyde, Melissa K; Terry, Deborah J
2008-12-01
With an increasing demand for blood and blood products in Australia, there is a continual need to recruit blood donors. As such, it is important to investigate the factors that impact on nondonors' decision-making processes with regard to donating blood for the first time. Previous research has established the efficacy of the theory of planned behavior (TPB) in predicting blood donor intentions. The current research aimed to test a TPB model augmented with constructs implicated in previous blood donor research; specifically descriptive norm, moral norm, anticipated regret, and donation anxiety. Participants completed measures assessing the standard TPB variables of attitude, subjective norm, and perceived behavioral control (PBC) as well as descriptive norm, moral norm, donation anxiety, and anticipated regret. Path analysis examined the utility of the augmented TPB model to predict 195 non-blood donors' intentions to donate blood. A final revised model provided a very good fit to the data and included attitude, PBC, moral norm, descriptive norm, anticipated regret, and donation anxiety as direct predictors of intention, with these factors accounting for 70 percent of the variance in intentions to donate blood. A revised TPB model provided a more efficacious predictor of nondonors' intentions to donate than the standard TPB model and highlights the role that norm-based factors and affective-laden constructs play in predicting non-blood donors' intentions to donate.
Regional HLA Differences in Poland and Their Effect on Stem Cell Donor Registry Planning
Schmidt, Alexander H.; Solloch, Ute V.; Pingel, Julia; Sauter, Jürgen; Böhme, Irina; Cereb, Nezih; Dubicka, Kinga; Schumacher, Stephan; Wachowiak, Jacek; Ehninger, Gerhard
2013-01-01
Regional HLA frequency differences are of potential relevance for the optimization of stem cell donor recruitment. We analyzed a very large sample (n = 123,749) of registered Polish stem cell donors. Donor figures by 1-digit postal code regions ranged from n = 5,243 (region 9) to n = 19,661 (region 8). Simulations based on region-specific haplotype frequencies showed that donor recruitment in regions 0, 2, 3 and 4 (mainly located in the south-eastern part of Poland) resulted in an above-average increase of matching probabilities for Polish patients. Regions 1, 7, 8, 9 (mainly located in the northern part of Poland) showed an opposite behavior. However, HLA frequency differences between regions were generally small. A strong indication for regionally focused donor recruitment efforts can, therefore, not be derived from our analyses. Results of haplotype frequency estimations showed sample size effects even for sizes between n≈5,000 and n≈20,000. This observation deserves further attention as most published haplotype frequency estimations are based on much smaller samples. PMID:24069237
Braunhut, Beth L.; Graham, Anna R.; Lian, Fangru; Webster, Phyllis D.; Krupinski, Elizabeth A.; Bhattacharyya, Achyut K.; Weinstein, Ronald S.
2014-01-01
Background: The case triage practice workflow model was used to manage incoming cases on a telepathology-enabled surgical pathology quality assurance (QA) service. Maximizing efficiency of workflow and the use of pathologist time requires detailed information on factors that influence telepathologists’ decision-making on a surgical pathology QA service, which was gathered and analyzed in this study. Materials and Methods: Surgical pathology report reviews and telepathology service logs were audited, for 1862 consecutive telepathology QA cases accrued from a single Arizona rural hospital over a 51 month period. Ten university faculty telepathologists served as the case readers. Each telepathologist had an area of subspecialty surgical pathology expertise (i.e. gastrointestinal pathology, dermatopathology, etc.) but functioned largely as a general surgical pathologist while on this telepathology-enabled QA service. They handled all incoming cases during their individual 1-h telepathology sessions, regardless of the nature of the organ systems represented in the real-time incoming stream of outside surgical pathology cases. Results: The 10 participating telepathologists’ postAmerican Board of pathology examination experience ranged from 3 to 36 years. This is a surrogate for age. About 91% of incoming cases were immediately signed out regardless of the subspecialty surgical pathologists’ area of surgical pathology expertise. One hundred and seventy cases (9.13%) were deferred. Case concurrence rates with the provisional surgical pathology diagnosis of the referring pathologist, for incoming cases, averaged 94.3%, but ranged from 88.46% to 100% for individual telepathologists. Telepathology case deferral rates, for second opinions or immunohistochemistry, ranged from 4.79% to 21.26%. Differences in concordance rates and deferral rates among telepathologists, for incoming cases, were significant but did not correlate with years of experience as a practicing pathologist. Coincidental overlaps of the area of subspecialty surgical pathology expertise with organ-related incoming cases did not influence decisions by the telepathologists to either defer those cases or to agree or disagree with the referring pathologist's provisional diagnoses. Conclusions: Subspecialty surgical pathologists effectively served as general surgical pathologists on a telepathology-based surgical pathology QA service. Concurrence rates with incoming surgical pathology report diagnoses, and case deferral rates, varied significantly among the 10 on-service telepathologists. We found no evidence that the higher deferral rates correlated with improving the accuracy or quality of the surgical pathology reports. PMID:25057432
Breitenstein, Caterina; Grewe, Tanja; Flöel, Agnes; Ziegler, Wolfram; Springer, Luise; Martus, Peter; Huber, Walter; Willmes, Klaus; Ringelstein, E Bernd; Haeusler, Karl Georg; Abel, Stefanie; Glindemann, Ralf; Domahs, Frank; Regenbrecht, Frank; Schlenck, Klaus-Jürgen; Thomas, Marion; Obrig, Hellmuth; de Langen, Ernst; Rocker, Roman; Wigbers, Franziska; Rühmkorf, Christina; Hempen, Indra; List, Jonathan; Baumgaertner, Annette
2017-04-15
Treatment guidelines for aphasia recommend intensive speech and language therapy for chronic (≥6 months) aphasia after stroke, but large-scale, class 1 randomised controlled trials on treatment effectiveness are scarce. We aimed to examine whether 3 weeks of intensive speech and language therapy under routine clinical conditions improved verbal communication in daily-life situations in people with chronic aphasia after stroke. In this multicentre, parallel group, superiority, open-label, blinded-endpoint, randomised controlled trial, patients aged 70 years or younger with aphasia after stroke lasting for 6 months or more were recruited from 19 inpatient or outpatient rehabilitation centres in Germany. An external biostatistician used a computer-generated permuted block randomisation method, stratified by treatment centre, to randomly assign participants to either 3 weeks or more of intensive speech and language therapy (≥10 h per week) or 3 weeks deferral of intensive speech and language therapy. The primary endpoint was between-group difference in the change in verbal communication effectiveness in everyday life scenarios (Amsterdam-Nijmegen Everyday Language Test A-scale) from baseline to immediately after 3 weeks of treatment or treatment deferral. All analyses were done using the modified intention-to-treat population (those who received 1 day or more of intensive treatment or treatment deferral). This study is registered with ClinicalTrials.gov, number NCT01540383. We randomly assigned 158 patients between April 1, 2012, and May 31, 2014. The modified intention-to-treat population comprised 156 patients (78 per group). Verbal communication was significantly improved from baseline to after intensive speech and language treatment (mean difference 2·61 points [SD 4·94]; 95% CI 1·49 to 3·72), but not from baseline to after treatment deferral (-0·03 points [4·04]; -0·94 to 0·88; between-group difference Cohen's d 0·58; p=0·0004). Eight patients had adverse events during therapy or treatment deferral (one car accident [in the control group], two common cold [one patient per group], three gastrointestinal or cardiac symptoms [all intervention group], two recurrent stroke [one in intervention group before initiation of treatment, and one before group assignment had occurred]); all were unrelated to study participation. 3 weeks of intensive speech and language therapy significantly enhanced verbal communication in people aged 70 years or younger with chronic aphasia after stroke, providing an effective evidence-based treatment approach in this population. Future studies should examine the minimum treatment intensity required for meaningful treatment effects, and determine whether treatment effects cumulate over repeated intervention periods. German Federal Ministry of Education and Research and the German Society for Aphasia Research and Treatment. Copyright © 2017 Elsevier Ltd. All rights reserved.
DOE Office of Scientific and Technical Information (OSTI.GOV)
Eyer, James M.; Erdman, Bill; Iannucci, Joseph J., Jr.
2005-03-01
This report describes Phase III of a project entitled Innovative Applications of Energy Storage in a Restructured Electricity Marketplace. For this study, the authors assumed that it is feasible to operate an energy storage plant simultaneously for two primary applications: (1) energy arbitrage, i.e., buy-low-sell-high, and (2) to reduce peak loads in utility ''hot spots'' such that the utility can defer their need to upgrade transmission and distribution (T&D) equipment. The benefits from the arbitrage plus T&D deferral applications were estimated for five cases based on the specific requirements of two large utilities operating in the Eastern U.S. A numbermore » of parameters were estimated for the storage plant ratings required to serve the combined application: power output (capacity) and energy discharge duration (energy storage). In addition to estimating the various financial expenditures and the value of electricity that could be realized in the marketplace, technical characteristics required for grid-connected distributed energy storage used for capacity deferral were also explored.« less
Ishii, Daisuke; Matsuzawa, Daisuke; Matsuda, Shingo; Tomizawa, Haruna; Sutoh, Chihiro; Shimizu, Eiji
2014-01-01
DNA methylation is one of the essential factors in the control of gene expression. Folic acid, methionine and choline (methyl donors)--all nutrients related to one-carbon metabolism--are known as important mediators of DNA methylation. A previous study has shown that long-term administration of a diet lacking in methyl donors caused global DNA hypermethylation in the brain (Pogribny et al., 2008). However, no study has investigated the effects of a diet lacking in methyl donors during the developmental period on emotional behaviors such as fear and anxiety-like behavior in association with gene expressions in the brain. In addition, it has not been elucidated whether a diet supplemented with methyl donors later in life can reverse these changes. Therefore, we examined the effects of methyl donor deficiency during the developmental period on fear memory acquisition/extinction and anxiety-like behavior, and the relevant gene expressions in the hippocampus in juvenile (6-wk) and adult (12-wk) mice. We found that juvenile mice fed a methyl-donor-deficient diet had impaired fear memory acquisition along with decreases in the gene expressions of Dnmt3a and Dnmt3b. In addition, reduced anxiety-like behavior with decreased gene expressions of Grin2b and Gabar2 was observed in both the methyl-donor-deficient group and the body-weight-matched food-restriction group. After being fed a diet supplemented with methyl donors ad libitum, adult mice reversed the alteration of gene expression of Dnmt3a, Dnmt3b, Grin2b and Gabar2, but anxiety-like behavior became elevated. In addition, impaired fear-memory formation was observed in the adult mice fed the methyl-donor-deficient diet during the developmental period. Our study suggested that developmental alterations in the one-carbon metabolic pathway in the brain could have effects on emotional behavior and memory formation that last into adulthood.
Ishii, Daisuke; Matsuzawa, Daisuke; Matsuda, Shingo; Tomizawa, Haruna; Sutoh, Chihiro; Shimizu, Eiji
2014-01-01
DNA methylation is one of the essential factors in the control of gene expression. Folic acid, methionine and choline (methyl donors)–all nutrients related to one-carbon metabolism–are known as important mediators of DNA methylation. A previous study has shown that long-term administration of a diet lacking in methyl donors caused global DNA hypermethylation in the brain (Pogribny et al., 2008). However, no study has investigated the effects of a diet lacking in methyl donors during the developmental period on emotional behaviors such as fear and anxiety-like behavior in association with gene expressions in the brain. In addition, it has not been elucidated whether a diet supplemented with methyl donors later in life can reverse these changes. Therefore, we examined the effects of methyl donor deficiency during the developmental period on fear memory acquisition/extinction and anxiety-like behavior, and the relevant gene expressions in the hippocampus in juvenile (6-wk) and adult (12-wk) mice. We found that juvenile mice fed a methyl-donor-deficient diet had impaired fear memory acquisition along with decreases in the gene expressions of Dnmt3a and Dnmt3b. In addition, reduced anxiety-like behavior with decreased gene expressions of Grin2b and Gabar2 was observed in both the methyl-donor-deficient group and the body-weight-matched food-restriction group. After being fed a diet supplemented with methyl donors ad libitum, adult mice reversed the alteration of gene expression of Dnmt3a, Dnmt3b, Grin2b and Gabar2, but anxiety-like behavior became elevated. In addition, impaired fear-memory formation was observed in the adult mice fed the methyl-donor-deficient diet during the developmental period. Our study suggested that developmental alterations in the one-carbon metabolic pathway in the brain could have effects on emotional behavior and memory formation that last into adulthood. PMID:25144567
No costly prosociality among related long-tailed macaques (Macaca fascicularis).
Sterck, Elisabeth H M; Olesen, Caroline U; Massen, Jorg J M
2015-08-01
Altruism, benefiting another at a cost to the donor, may be achieved through prosocial behavior. Studies of nonhuman animals typically investigate prosocial behavior with paradigms in which the donor can choose to give a recipient a food item, and the choice does not affect the donor's reward (which is either present or absent). In such tasks, long-tailed macaques (Macaca fascicularis) show prosocial behavior, especially toward kin. Here, we tested captive long-tailed macaques with related recipients in an alternative task, in which the donor had to give up a preferred reward to benefit the recipient; that is, they had to choose a lower valued reward for themselves to provide food to their kin. Overall, the macaques did not provide their kin with food. The task forced the donor to balance its prosocial behavior with its selfish choice for a higher value reward, a balance that turned out to favor selfish motives. Consequently, our study shows that a prosocial tendency is not sufficient to elicit costly prosocial behavior in long-tailed macaques. Subsequently, we feel that tasks in which the donor must choose a lower value reward to benefit another individual may allow the titration of the strength of prosocial behavior, and thus provides interesting possibilities for future comparative studies. (c) 2015 APA, all rights reserved).
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2012-04-11
...; Comment Request: Prevalence, Incidence, Epidemiology and Molecular Variants of HIV in Blood Donors in..., Epidemiology and Molecular Variants of HIV in Blood Donors in Brazil. Type of Information Collection Request... prevalence and incidence rates, and identifying behavioral risk behaviors for HIV infection among donors are...
Federal Register 2010, 2011, 2012, 2013, 2014
2012-01-13
... Request; Prevalence, Incidence, Epidemiology and Molecular Variants of HIV in Blood Donors in Brazil... Collection: Title: Prevalence, Incidence, Epidemiology and Molecular Variants of HIV in Blood Donors in... behavioral risk behaviors for HIV infection among donors are critical steps to assessing and reducing risk of...
Factors influencing donor return.
Schlumpf, Karen S; Glynn, Simone A; Schreiber, George B; Wright, David J; Randolph Steele, Whitney; Tu, Yongling; Hermansen, Sigurd; Higgins, Martha J; Garratty, George; Murphy, Edward L
2008-02-01
To predict future blood donation behavior and improve donor retention, it is important to understand the determinants of donor return. A self-administered questionnaire was completed in 2003 by 7905 current donors. With data mining methods, all factors measured by the survey were ranked as possible predictors of actual return within 12 months. Significant factors were analyzed with logistic regression to determine predictors of intention and of actual return. Younger and minority donors were less likely to return in 12 months. Predictors of donor return were higher prior donation frequency, higher intention to return, a convenient place to donate, and having a good donation experience. Most factors associated with actual donor return were also associated with a high intention to return. Although not significant for actual return, feeling a responsibility to help others, higher empathetic concern, and a feeling that being a blood donor means more than just donating blood were related to high intention to return. Prior donation frequency, intention to return, donation experience, and having a convenient location appear to significantly predict donor return. Clearly, donor behavior is dependent on more than one factor alone. Altruistic behavior, empathy, and social responsibility items did not enter our model to predict actual return. A donor's stated intention to give again is positively related to actual return and, while not a perfect measure, might be a useful proxy when donor return cannot be determined.
Zhang, Tao; Han, Han; Zou, Yunlong; Lee, Ying-Chi; Oshima, Hiroya; Wong, Ken-Tsung; Holmes, Russell J
2017-08-02
We report a promising set of donor-acceptor-acceptor (D-A-A) electron-donor materials based on coplanar thieno[3,2-b]/[2,3-b]indole, benzo[c][1,2,5]thiadiazole, and dicyanovinylene, which are found to show broadband absorption with high extinction coefficients. The role of the regioisomeric electron-donating thienoindole moiety on the physical and structural properties is examined. Bulk heterojunction (BHJ) organic photovoltaic cells (OPVs) based on the thieno[2,3-b]indole-based electron donor NTU-2, using C 70 as an electron acceptor, show a champion power conversion efficiency of 5.2% under AM 1.5G solar simulated illumination. This efficiency is limited by a low fill factor (FF), as has previously been the case in D-A-A systems. In order to identify the origin of the limited FF, further insight into donor layer charge-transport behavior is realized by examining planar heterojunction OPVs, with emphasis on the evolution of film morphology with thermal annealing. Compared to as-deposited OPVs that exhibit insufficient donor crystallinity, crystalline OPVs based on annealed thin films show an increase in the short-circuit current density, FF, and power conversion efficiency. These results suggest that that the crystallization of D-A-A molecules might not be realized spontaneously at room temperature and that further processing is needed to realize efficient charge transport in these materials.
Smith, André; Fiddler, Jay; Walby, Kevin; Hier, Sean
2011-11-01
This article examines the process of rebuilding institutional trust in the Canadian blood system in the aftermath of the tainted blood scandal. Our focus is the policy of lifetime deferral from donating blood for men who have sex with men. Drawing on findings from interviews with representatives of Health Canada's Expert Advisory Committee on Blood Regulation, the National Liaison Committee, Canadian Blood Services, and blood consumer groups, we demonstrate how claims making about rights, discrimination, science, and risk contribute to policy continuity. We also examine the link between policy continuity and the management of reputational risk.
NASA Astrophysics Data System (ADS)
Castro, M. Cidália R.; Fonseca, A. Maurício C.; Belsley, M.; Raposo, M. Manuela M.
2011-05-01
Two series of novel push-pull heterocyclic azo dyes have been synthesized and characterized. The two series of compounds were based on different combinations of π-conjugated bridges (bithiophene and thienylpyrrole) which also act simultaneously as donor groups, together with diazo(benzo)thiazolyl as acceptor moieties. Their thermal stability and electrochemical behavior were characterized, while hyper-Rayleigh scattering (HRS) was employed to evaluate their second-order nonlinear optical properties. The results of these studies have been critically analyzed together with several thienylpyrrole azo dyes reported earlier from our laboratories in which the thienylpyrrole system was used as the donor group functionalized with aryl and (benzo)thiazolyldiazene as acceptor moiety. The measured molecular first hyperpolarizabilities and the observed linear optical and redox behavior showed strong variations in function of the heterocyclic spacers used (bithiophene or thienylpyrrole) and were also sensitive to the acceptor strength of the diazenehetero(aryl) moiety.
High-resolution photoluminescence spectroscopy of Sn-doped ZnO single crystals
Kumar, E. Senthil; Mohammadbeigi, F.; Boatner, Lynn A.; ...
2016-01-01
Here, Group IV donors in ZnO are poorly understood, despite evidence that they are effective n-dopants. We present high-resolution photoluminescence spectroscopy studies of unintentionally doped and Sn doped ZnO single crystals grown by the chemical vapor transport method. Doped samples showed greatly increased emission from the I10 bound exciton transition which was recently proven to be related to the incorporation of Sn impurities based on radio-isotope studies. PL linewidths are exceptionally sharp for these samples, enabling clear identification of several donor species. Temperature dependent PL measurements of the I10 line emission energy and intensity dependence reveal a behavior similar tomore » other shallow donors in ZnO. Ionized donor bound exciton and two electron satellite transitions of the I10 transition are unambiguously identified and yield a donor binding energy of 71 meV. In contrast to recent reports of Ge-related donors in ZnO, the spectroscopic binding energy for the Sn-related donor bound exciton follows a linear relationship with donor binding energy (Haynes rule), confirming the shallow nature of this defect center, which we attribute to a SnZn double donor compensated by an unknown single acceptor.« less
Analysis of Chinese Donors’ Return Behavior
Guo, Nan; Wang, Jingxing; Ness, Paul; Yao, Fuzhu; Dong, Xiangdong; Bi, Xinhong; Mei, Heili; Li, Julin; He, Weilan; Lu, Yunlai; Ma, Hongli; Wen, Xiuqiong; Huang, Mei; Wright, David J.; King, Melissa; High, Patrick; Nelson, Kenrad; Shan, Hua
2010-01-01
Background It is important to understand donor return behavior. Converting first time donors to become repeat donors is essential for maintaining an adequate blood supply. Methods Characteristics of 241,552 whole blood (WB) donations from first time (FT) and repeat (RPT) donors who donated in 2008 at the 5 blood centers in China were compared. A subset of 54,394 WB donors who donated between January 1 and March 31, 2008 were analyzed for their return behavior in 2008 following the index donation using logistic regression. Results Of all donations, 64% was from FT donors. Donors with self-reported previous donations tended to be male, older, married, donated larger volume (≥300mL), and were heavier in weight. Among donors who donated from January to March, 2008, 14% returned for subsequent WB donations by the end of 2008. The number of previous donations and blood collection location were the two strongest predictors for making subsequent donations. Donors with 1, 2–3 and more than 3 previous donations were 3.7, 5.7, and 11.0 times more likely to return than FT donors. Those who donated in a blood collection vehicle were 4 times more likely to return than those who donated at a blood center. Being female, younger and of a lower education level (≤ middle school) were positively associated with subsequent return blood donation during the follow-up period observed in this study. Conclusion Most of the Chinese blood supply is from first time donors. Strategies aimed at encouraging current donors to become repeat donors are needed. PMID:20849408
Collett, David; Friend, Peter J; Watson, Christopher J E
2017-04-01
A measure of donor liver quality, the donor liver index, was developed and validated for the UK population of transplant recipients. Unlike previously proposed measures, this index is only based on variables that are available at the point of retrieval, and so does not include cold ischemic time. Indices of liver quality were based on data from the UK Transplant Registry on all 7929 liver transplants between January 2000 and December 2014. The donor liver index (DLI) was based on factors shown to affect graft survival, which included donor age, sex, height, type (donor after brain death or circulatory death), bilirubin, smoking history, and whether the liver was split. A separate index (DLI1) looking at 1-year survival showed donor cardiac disease, black ethnicity, and steatosis to be additional risk factors. A strong association was found between DLI and whether or not a surgeon accepts an offered liver for transplant, with a marked fall in acceptance rates for livers with an index greater than 1.31. Since 2000, there has been a notable reduction in the quality of livers transplanted, coupled with variation between the 7 UK liver transplant centers in risk appetite. The DLI is an index of liver quality which enables analysis of the changing trends in liver quality and center behavior. DLI1 enables identification of factors affecting shorter-term survival, and perhaps identifies a cohort of livers that may benefit from novel preservation technologies.
A Web-based approach to blood donor preparation.
France, Christopher R; France, Janis L; Kowalsky, Jennifer M; Copley, Diane M; Lewis, Kristin N; Ellis, Gary D; McGlone, Sarah T; Sinclair, Kadian S
2013-02-01
Written and video approaches to donor education have been shown to enhance donation attitudes and intentions to give blood, particularly when the information provides specific coping suggestions for donation-related concerns. This study extends this work by comparing Web-based approaches to donor preparation among donors and nondonors. Young adults (62% female; mean [±SD] age, 19.3 [±1.5] years; mean [range] number of prior blood donations, 1.1 [0-26]; 60% nondonors) were randomly assigned to view 1) a study Web site designed to address common blood donor concerns and suggest specific coping strategies (n = 238), 2) a standard blood center Web site (n = 233), or 3) a control Web site where participants viewed videos of their choice (n = 202). Measures of donation attitude, anxiety, confidence, intention, anticipated regret, and moral norm were completed before and after the intervention. Among nondonors, the study Web site produced greater changes in donation attitude, confidence, intention, and anticipated regret relative to both the standard and the control Web sites, but only differed significantly from the control Web site for moral norm and anxiety. Among donors, the study Web site produced greater changes in donation confidence and anticipated regret relative to both the standard and the control Web sites, but only differed significantly from the control Web site for donation attitude, anxiety, intention, and moral norm. Web-based donor preparation materials may provide a cost-effective way to enhance donation intentions and encourage donation behavior. © 2012 American Association of Blood Banks.
Davies, Joshua A; Elangovan, Arumugasamy; Sullivan, Philip A; Olbricht, Benjamin C; Bale, Denise H; Ewy, Todd R; Isborn, Christine M; Eichinger, Bruce E; Robinson, Bruce H; Reid, Philip J; Li, Xiaosong; Dalton, Larry R
2008-08-13
Two new highly hyperpolarizable chromophores, based on N,N- bis-(4-methoxyphenyl) aryl-amino donors and phenyl-trifluoromethyl-tricyanofuran (CF3-Ph-TCF) acceptor linked together via pi-conjugation through 2,5-divinylenethienyl moieties as the bridge, have been designed and synthesized successfully for the first time. The aryl moieties on the donor side of the chromophore molecules were varied as to be thiophene and 1-n-hexylpyrrole. The linear and nonlinear optical (NLO) properties of all compounds were evaluated in addition to recording relevant thermal and electrochemical data. The properties of the two new molecules were comparatively studied. These results are critically analyzed along with two other compounds, reported earlier from our laboratories and our collaborator's, that contain (i) aliphatic chain-bearing aniline and (ii) dianisylaniline as donors, keeping the bridge (2,5-divinylenethienyl-), and the acceptor (CF3-Ph-TCF), constant. Trends in theoretically (density functional theory, DFT) predicted, zero-frequency gas-phase hyperpolarizability [beta(0;0,0)] values are shown to be consistent with the trends in beta HRS(-2omega;omega,omega), as measured by Hyper-Rayleigh Scattering (HRS), when corrected to zero-frequency using the two-level model (TLM) approximation. Similarly, trends in poling efficiency data (r33/E(p)) and wavelength dispersion measured by reflection ellipsometry (using a Teng-Man apparatus) and attenuated total reflection (ATR) are found to fit the TLM and DFT predictions. A 3-fold enhancement in bulk nonlinearity (r33) is realized as the donor subunits are changed from alkylaniline to dianisylaminopyrrole donors. The results of these studies provide insight into the complicated effects on molecular hyperpolarizability of substituting heteroaromatic subunits into the donor group structures. These studies also demonstrate that, when frequency dependence and electric-field-induced ordering behavior are correctly accounted for, ab initio DFT generated beta(0;0,0) is effective as a predictor of changes in r33 behavior based on chromophore structure modification. Thus DFT can provide valuable insight into the electronic structure origin of complex optical phenomena in organic media.
France, Christopher R; France, Janis L; Carlson, Bruce W; Frye, Victoria; Duffy, Louisa; Kessler, Debra A; Rebosa, Mark; Shaz, Beth H
2017-02-01
The Blood Donor Competency, Autonomy, and Relatedness Enhancement (Blood Donor CARE) project was designed as a practical application of self-determination theory to encourage retention of first-time donors. Self-determination theory proposes that people are more likely to persist with behaviors that are internally-motivated, and that externally-motivated behavior can evolve and become internalized given the appropriate socio-environmental conditions. According to self-determination theory, motivation to engage in blood donation may become increasingly self-determined if the behavior satisfies fundamental human needs for competence (a sense of self-efficacy to achieve specific goals), autonomy (a sense of volitional control over one's behavior), and relatedness (a sense of connection to a larger group). The primary aim of this randomized controlled trial is to examine the effect of competence, autonomy, and/or relatedness interventions on donor retention. Using a full factorial design, first-time donors will be assigned to a control condition or one of seven intervention conditions. Donation competence, autonomy, and relatedness, along with additional constructs associated with return donation, will be assessed before and after the intervention using online surveys, and donation attempts will be tracked for one-year using blood center donor databases. We hypothesize that, compared to the control condition, the interventions will increase the likelihood of a subsequent donation attempt. We will also examine intervention-specific increases in competence, autonomy, and relatedness as potential mediators of enhanced donor retention. By promoting first-time donor competence, autonomy, and relatedness our goal is to enhance internal motivation for giving and in so doing increase the likelihood of future donation. Copyright © 2016 Elsevier Inc. All rights reserved.
France, Christopher R.; France, Janis L.; Carlson, Bruce W.; Frye, Victoria; Duffy, Louisa; Kessler, Debra A.; Rebosa, Mark; Shaz, Beth H.
2016-01-01
The Blood Donor Competency, Autonomy, and Relatedness Enhancement (Blood Donor CARE) project was designed as a practical application of self-determination theory to encourage retention of first-time donors. Self-determination theory proposes that people are more likely to persist with behaviors that are internally-motivated, and that externally-motivated behavior can evolve and become internalized given the appropriate socio-environmental conditions. According to self-determination theory, motivation to engage in blood donation may become increasingly self-determined if the behavior satisfies fundamental human needs for competence (a sense of self-efficacy to achieve specific goals), autonomy (a sense of volitional control over one’s behavior), and relatedness (a sense of connection to a larger group). The primary aim of this randomized controlled trial is to examine the effect of competence, autonomy, and/or relatedness interventions on donor retention. Using a full factorial design, first-time donors will be assigned to a control condition or one of seven intervention conditions. Donation competence, autonomy, and relatedness, along with additional constructs associated with return donation, will be assessed before and after the intervention using online surveys, and donation attempts will be tracked for one-year using blood center donor databases. We hypothesize that, compared to the control condition, the interventions will increase the likelihood of a subsequent donation attempt. We will also examine intervention-specific increases in competence, autonomy, and relatedness as potential mediators of enhanced donor retention. By promoting first-time donor competence, autonomy, and relatedness our goal is to enhance internal motivation for giving and in so doing increase the likelihood of future donation. PMID:27979752
ERIC Educational Resources Information Center
Roy-Rasheed, Lupita D.
2012-01-01
This research project was a study of the philanthropic behavior of local alumni donors at two historically Black colleges and universities (HBCUs) in the South Central Region. Specifically, the research explored HBCUs' local alumni donors' experiences, perceptions, triggers, and motivations and how these factors influence alumni giving. This…
Cancer Incidence and Mortality in a Cohort of US Blood Donors: A 20-Year Study
Hirschler, Nora V.; Chinn, Artina; Busch, Michael P.; Custer, Brian
2013-01-01
Blood donors are considered one of the healthiest populations. This study describes the epidemiology of cancer in a cohort of blood donors up to 20 years after blood donation. Records from donors who participated in the Retroviral Epidemiology Donor Study (REDS, 1991–2002) at Blood Centers of the Pacific (BCP), San Francisco, were linked to the California Cancer Registry (CCR, 1991–2010). Standardized incidence ratios (SIR) were estimated using standard US 2000 population, and survival analysis used to compare all-cause mortality among donors and a random sample of nondonors with cancer from CCR. Of 55,158 eligible allogeneic blood donors followed-up for 863,902 person-years, 4,236 (7.7%) primary malignant cancers were diagnosed. SIR in donors was 1.59 (95% CI = 1.54,1.64). Donors had significantly lower mortality (adjusted HR = 0.70, 95% CI = 0.66–0.74) compared with nondonor cancer patients, except for respiratory system cancers (adjusted HR = 0.93, 95% CI = 0.82–1.05). Elevated cancer incidence among blood donors may reflect higher diagnosis rates due to health seeking behavior and cancer screening in donors. A “healthy donor effect” on mortality following cancer diagnosis was demonstrated. This population-based database and sample repository of blood donors with long-term monitoring of cancer incidence provides the opportunity for future analyses of genetic and other biomarkers of cancer. PMID:24489545
Federal Register 2010, 2011, 2012, 2013, 2014
2010-02-23
... explore PDI donors' knowledge, attitudes, behaviors and beliefs (KABB) about the health history... regarding their knowledge, attitudes, behaviors and beliefs about the donor health history process. Even...
Alherz, Abdulaziz; Lim, Chern-Hooi; Hynes, James T; Musgrave, Charles B
2018-01-25
We propose a method to approximate the kinetic properties of hydride donor species by relating the nucleophilicity (N) of a hydride to the activation free energy ΔG ⧧ of its corresponding hydride transfer reaction. N is a kinetic parameter related to the hydride transfer rate constant that quantifies a nucleophilic hydridic species' tendency to donate. Our method estimates N using quantum chemical calculations to compute ΔG ⧧ for hydride transfers from hydride donors to CO 2 in solution. A linear correlation for each class of hydrides is then established between experimentally determined N values and the computationally predicted ΔG ⧧ ; this relationship can then be used to predict nucleophilicity for different hydride donors within each class. This approach is employed to determine N for four different classes of hydride donors: two organic (carbon-based and benzimidazole-based) and two inorganic (boron and silicon) hydride classes. We argue that silicon and boron hydrides are driven by the formation of the more stable Si-O or B-O bond. In contrast, the carbon-based hydrides considered herein are driven by the stability acquired upon rearomatization, a feature making these species of particular interest, because they both exhibit catalytic behavior and can be recycled.
The psychology of doing nothing: forms of decision avoidance result from reason and emotion.
Anderson, Christopher J
2003-01-01
Several independent lines of research bear on the question of why individuals avoid decisions by postponing them, failing to act, or accepting the status quo. This review relates findings across several different disciplines and uncovers 4 decision avoidance effects that offer insight into this common but troubling behavior: choice deferral, status quo bias, omission bias, and inaction inertia. These findings are related by common antecedents and consequences in a rational-emotional model of the factors that predispose humans to do nothing. Prominent components of the model include cost-benefit calculations, anticipated regret, and selection difficulty. Other factors affecting decision avoidance through these key components, such as anticipatory negative emotions, decision strategies, counterfactual thinking, and preference uncertainty, are also discussed.
Masser, Barbara M; White, Katherine M; Hamilton, Kyra; McKimmie, Blake M
2012-02-01
Using a Theory of Planned Behavior (TPB) framework the current study explored the beliefs of current blood donors (N=172) about donating during a low and high-risk phase of a potential avian influenza outbreak. While the majority of behavioral, normative, and control beliefs identified in preliminary research differed as a function of donors' intentions to donate during both phases of an avian influenza outbreak, regression analyses suggested that the targeting of different specific beliefs during each phase of an outbreak would yield most benefit in bolstering donors' intentions to remain donating. The findings provide insight in how to best motivate donors in different phases of an avian influenza outbreak. Copyright © 2011 Elsevier Ltd. All rights reserved.
A single molecule rectifier with strong push-pull coupling
NASA Astrophysics Data System (ADS)
Saraiva-Souza, Aldilene; Macedo de Souza, Fabricio; Aleixo, Vicente F. P.; Girão, Eduardo Costa; Filho, Josué Mendes; Meunier, Vincent; Sumpter, Bobby G.; Souza Filho, Antônio Gomes; Del Nero, Jordan
2008-11-01
We theoretically investigate the electronic charge transport in a molecular system composed of a donor group (dinitrobenzene) coupled to an acceptor group (dihydrophenazine) via a polyenic chain (unsaturated carbon bridge). Ab initio calculations based on the Hartree-Fock approximations are performed to investigate the distribution of electron states over the molecule in the presence of an external electric field. For small bridge lengths (n =0-3) we find a homogeneous distribution of the frontier molecular orbitals, while for n >3 a strong localization of the lowest unoccupied molecular orbital is found. The localized orbitals in between the donor and acceptor groups act as conduction channels when an external electric field is applied. We also calculate the rectification behavior of this system by evaluating the charge accumulated in the donor and acceptor groups as a function of the external electric field. Finally, we propose a phenomenological model based on nonequilibrium Green's function to rationalize the ab initio findings.
Battery Storage Evaluation Tool, version 1.x
DOE Office of Scientific and Technical Information (OSTI.GOV)
2015-10-02
The battery storage evaluation tool developed at Pacific Northwest National Laboratory is used to run a one-year simulation to evaluate the benefits of battery storage for multiple grid applications, including energy arbitrage, balancing service, capacity value, distribution system equipment deferral, and outage mitigation. This tool is based on the optimal control strategies to capture multiple services from a single energy storage device. In this control strategy, at each hour, a lookahead optimization is first formulated and solved to determine the battery base operating point. The minute-by-minute simulation is then performed to simulate the actual battery operation.
Code of Federal Regulations, 2013 CFR
2013-04-01
... in certain activities or behaviors considered to place such an individual at increased risk for HIV... physical examination of the donor to assess for any signs of HIV and hepatitis infection or signs... to donor suitability regarding high risk behaviors, clinical signs and symptoms for HIV and hepatitis...
Code of Federal Regulations, 2012 CFR
2012-04-01
... in certain activities or behaviors considered to place such an individual at increased risk for HIV... physical examination of the donor to assess for any signs of HIV and hepatitis infection or signs... to donor suitability regarding high risk behaviors, clinical signs and symptoms for HIV and hepatitis...
Code of Federal Regulations, 2014 CFR
2014-04-01
... in certain activities or behaviors considered to place such an individual at increased risk for HIV... physical examination of the donor to assess for any signs of HIV and hepatitis infection or signs... to donor suitability regarding high risk behaviors, clinical signs and symptoms for HIV and hepatitis...
How regular blood donors explain their behavior.
Belda Suárez, Isabel Maria; Fernández-Montoya, Antorio; Rodríguez Fernández, Andrés; López-Berrio, Antorio; Cillero-Peñuela, Manuel
2004-10-01
To understand repeated donation, it is crucial to know its meaning. This issue was explored by asking a sample of regular donors to explain why they maintain this behavior. Discourse analysis was conducted in five groups of regular donors, selected according to the setting and number of their donations (from 1990 to 2001), on their motivation, attitudes, commitment to donation, personality, and self-concept. Three discursive positions were distinguished in relation to the different cultural meanings attributed to blood donation. Blood donation was understood in a rational and evaluative manner by the majority but in an emotional, personalized, and stereotyped manner by a minority. Continual donation as a form of help was rationalized as a function of internal and external factors, notably personal convenience in comparison to other helping behaviors and ease of access to collection points. The discourse referents offered to the donor greatly influence the meanings they attribute to their behavior. Some promotional materials should be revised because they may not connect with the reasons for donating that people find most comprehensible.
Veldhuizen, Ingrid; van Dongen, Anne
2013-08-01
The demand for plasma products has increased rapidly. It is therefore important to understand donating behavior by plasma donors. This study investigates whether motivational differences between whole blood and plasma donors already exist at the beginning of a donor career. New donors (n = 4861) were invited to fill out a questionnaire before their first donation (response, 61%). The questionnaire assessed variables from the Theory of Planned Behavior (intention, self-efficacy, attitude, and norms), conscientiousness, and donation anxiety. Three years later it was determined who became whole blood or plasma donor. Multivariable linear regression analyses for intention were fitted separately for whole blood and plasma donors. A logistic regression analysis was executed to estimate the effect of intention at the beginning of a donor career on becoming a plasma donor. Plasma donors had a higher intention, self-efficacy, attitude, and conscientiousness and a lower anxiety than whole blood donors. In plasma and whole blood donors, both self-efficacy and cognitive attitude were positively related to intention but with different strength (plasma, β = 0.47 and β = 0.30; whole blood, β = 0.57 and β = 0.17). Having a high level of intention increased the odds of becoming a plasma donor (odds ratio, 1.33; 95% confidence interval, 1.12-1.59). Motivational differences already exist between future whole blood and plasma donors before their first donation. Although a feeling of self-efficacy is necessary for all new donors, more favorable cognitions are important for future plasma donors. Recruitment strategies for plasma donors should focus on attracting the more self-confident donors by highlighting the usefulness of plasma donation. © 2012 American Association of Blood Banks.
Hasegawa, Yoichi; Suyama, Yoshihisa; Seiwa, Kenji
2015-01-01
In plants, reproductive success is largely determined by the composition of pollen (i.e., self-pollen and outcross-pollen from near and distant pollen-donors) transported as a result of pollinator foraging behavior (e.g., pollen carryover). However, little evidence is available on how and to what extent the pollen carryover affects the pollen-donor composition and on which insect taxa are effective outcross-pollen transporters under field conditions. In this study, we explored roles of foraging behavior of insect pollinators on pollen-donor composition and subsequent reproductive success in a woody plant. We performed paternity analyses based on microsatellite genotyping of individual pollen grains found on diurnal pollinators (i.e., bumblebee, small bee, fly, small beetle, and honeybee) visiting Castanea crenata trees. The outcross-pollen rate was highest in bumblebees (66%), followed by small bees (35%), flies (31%), and small beetles (18%). The effective number of pollen donors, representing pollen carryover, was greater in bumblebees (9.71) than in flies (3.40), small bees (3.32), and small beetles (3.06). The high percentages of pollen from outside the plot on bumblebees (65.4%) and flies (71.2%) compared to small bees (35.3%) and small beetles (13.5%) demonstrated their longer pollen dispersal distances. All of the diurnal insects carried outcross-pollen grains for long distances via pollen carryover. This fact suggests that a wide range of insect taxa are potential outcross-pollen transporters for the self-incompatible C. crenata.
Martin, Sebastian; Greiling, Dorothea; Leibetseder, Nina
2017-12-13
The procurement of blood is an essential challenge of today's health care. Current studies emphasize the influence of word-of-mouth (WOM) on health care behavior, including blood donation. Still, there exists no study which systematically investigates how WOM affects the behavior of blood donors. Therefore, this paper aims to contribute to this lack of research by focusing on Austrian blood donors as possible receivers and senders of WOM. A survey was distributed to 300 donors of the Austrian Red Cross with a return of 245 surveys. The results highlight the strong influence of WOM on the awareness of the blood service and the willingness to donate blood. Further, structured and organized procedures, friendly employees and respectful interaction were found to be important factors determining willingness to recommend blood donation. Family members as well as friends are the preferred WOM-receivers and the personal face-to-face contact is the favored channel of communication. The results also show that WOM-behavior is strongly influenced by factors such as age, gender and donation frequency. By helping blood bank managers to better understand how WOM affects donation intention and behavior, this study provides a new approach to attract blood donors. © The Author 2017. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.
Xiao, Liangang; Liang, Tianxiang; Gao, Ke; Lai, Tianqi; Chen, Xuebin; Liu, Feng; Russell, Thomas P; Huang, Fei; Peng, Xiaobin; Cao, Yong
2017-09-06
Ternary organic solar cells (OSCs) are very attractive for further enhancing the power conversion efficiencies (PCEs) of binary ones but still with a single active layer. However, improving the PCEs is still challenging because a ternary cell with one more component is more complicated on phase separation behavior. If the two donors or two acceptors have similar chemical structures, good miscibility can be expected to reduce the try-and-error work. Herein, we report ternary devices based on two small molecule donors with the same backbone but different substituents. Whereas both binary devices show PCEs about 9%, the PCE of the ternary cells is enhanced to 10.17% with improved fill factor and short-circuit current values and external quantum efficiencies almost in the whole absorption wavelength region from 440 to 850 nm. The same backbone enables the donors miscible at molecular level, and the donor with a higher HOMO level plays hole relay process to facilitate the charge transportation in the ternary devices. Since side-chain engineering has been well performed to tune the active materials' energy levels in OSCs, our results suggest that their ternary systems are promising for further improving the binary cells' performance although their absorptions are not complementary.
19 CFR 181.44 - Calculation of drawback.
Code of Federal Regulations, 2010 CFR
2010-04-01
... TREASURY (CONTINUED) NORTH AMERICAN FREE TRADE AGREEMENT Restrictions on Drawback and Duty-Deferral... is repaired in the United States using imported parts from Korea on which $160.00 in duties have been...
Stable Cyclic Carbenes and Related Species beyond Diaminocarbenes
Melaimi, Mohand; Soleilhavoup, Michèle
2011-01-01
The success of homogeneous catalysis can be attributed largely to the development of a diverse range of ligand frameworks that have been used to tune the behavior of various systems. Spectacular results in this area have been achieved using cyclic diaminocarbenes (NHCs) as a result of their strong σ-donor properties. Although it is possible to cursorily tune the structure of NHCs, any diversity is still far from matching their phosphorus-based counterparts, which is one of the great strengths of the latter. A variety of stable acyclic carbenes are known, but they are either reluctant to bind metals or they give rise to fragile metal complexes. During the last five years, new types of stable cyclic carbenes, as well as related carbon-based ligands (which are not NHCs), and which feature even stronger σ-donor properties have been developed. Their synthesis and characterization as well as the stability, electronic properties, coordination behavior, and catalytic activity of the ensuing complexes are discussed, and comparisons with their NHC cousins are made. PMID:20836099
Heinen, Jurn; Burtch, Nicholas C; Walton, Krista S; Fonseca Guerra, Célia; Dubbeldam, David
2016-12-12
For the design of adsorptive-separation units, knowledge is required of the multicomponent adsorption behavior. Ideal adsorbed solution theory (IAST) breaks down for olefin adsorption in open-metal site (OMS) materials due to non-ideal donor-acceptor interactions. Using a density-function-theory-based energy decomposition scheme, we develop a physically justifiable classical force field that incorporates the missing orbital interactions using an appropriate functional form. Our first-principles derived force field shows greatly improved quantitative agreement with the inflection points, initial uptake, saturation capacity, and enthalpies of adsorption obtained from our in-house adsorption experiments. While IAST fails to make accurate predictions, our improved force field model is able to correctly predict the multicomponent behavior. Our approach is also transferable to other OMS structures, allowing the accurate study of their separation performances for olefins/paraffins and further mixtures involving complex donor-acceptor interactions. © 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
Bala, Sukhen; Sen Bishwas, Mousumi; Pramanik, Bhaskar; Khanra, Sumit; Fromm, Katharina M; Poddar, Pankaj; Mondal, Raju
2015-09-08
Employment of two different pyridyl-pyrazolyl-based ligands afforded three octanuclear lanthanide(III) (Ln = Dy, Tb) cage compounds and one hexanuclear neodymium(III) coordination cage, exhibiting versatile molecular architectures including a butterfly core. Relatively less common semirigid pyridyl-pyrazolyl-based asymmetric ligand systems show an interesting trend of forming polynuclear lanthanide cage complexes with different coordination environments around the metal centers. It is noteworthy here that construction of lanthanide complex itself is a challenging task in a ligand system as soft N-donor rich as pyridyl-pyrazol. We report herein some lanthanide complexes using ligand containing only one or two O-donors compare to five N-coordinating sites. The resultant multinuclear lanthanide complexes show interesting magnetic and spectroscopic features originating from different spatial arrangements of the metal ions. Alternating current (ac) susceptibility measurements of the two dysprosium complexes display frequency- and temperature-dependent out-of-phase signals in zero and 0.5 T direct current field, a typical characteristic feature of single-molecule magnet (SMM) behavior, indicating different energy reversal barriers due to different molecular topologies. Another aspect of this work is the occurrence of the not-so-common SMM behavior of the terbium complex, further confirmed by ac susceptibility measurement.
Predictors of organ donation behavior among Hispanic Americans.
Alvaro, Eusebio M; Jones, Sara Pace; Robles, Antonio Santa Maria; Siegel, Jason T
2005-06-01
Hispanic Americans have a substantial need for organ transplants and are underrepresented among organ donors, yet little is known about predictors of organ donation outcomes in this population. To assess factors that may function as significant predictors of organ donation behavior among Hispanic Americans. A random-digit-dial computer-assisted telephone-interview survey. Setting-Pima and Maricopa counties in Arizona. 1200 Hispanic Americans. Family discussion of organ donation and willingness to be an organ donor. Significant predictors of family discussion of organ donation include knowing someone willing to be an organ donor and disagreeing that carrying a donor card results in inadequate medical care. Willingness to be a donor is also predictive of family discussion. Significant predictors of willingness to be an organ donor are knowing someone willing to be an organ donor, being female, and disagreeing that thoughts about donation leads to thoughts about one's own mortality. Having a family discussion about organ donation is also predictive of willingness to be an organ donor. The data provide a springboard for larger studies encompassing the diversity and geographical dispersion of Hispanic Americans. The data also highlight the importance of educational efforts to make Hispanic Americans aware of people in their community who have donated in the past or who are now potential donors.
College Crowd-In: How Private Donations Positively Affect Alumni Giving
ERIC Educational Resources Information Center
Gottfried, Michael A.
2008-01-01
The issue of donor behavior and crowding out has been pertinent in the economics literature, both theoretically and empirically. Aggregate research has not been decisive, nor have many studies analyzed education institutions. I begin with a theoretical model of crowding-out versus crowding-in donor behavior. I then employ a fixed effects…
NASA Astrophysics Data System (ADS)
Ha, Jooyeon; Ryu, Jiseung; Lee, Heesoo
2014-06-01
The doping effect of (Na0.5K0.5)NbO3 (NKN) as alternatives for rare-earth elements on the electrical properties of BaTiO3 has been investigated, in terms of their substitution behavior. The dielectric constant of a specimen with x = 0.05 was about 79% higher than that of pure BaTiO3, and the temperature coefficient of capacitance was satisfied by the X7R specification. The specimen with x = 0.05 showed the lowest tetragonality among the four compositions and had a fine grain size of <2 μm. Although the addition of NKN decreased the specimen's tetragonality, the electrical properties were enhanced by the formation of defect dipoles and conduction electrons, which resulted from an acceptor and donor substitution behavior. Through O K-edge near edge x-ray absorption fine structure spectroscopy, the practical substitution behavior was defined by the change in Ti 3d orbital states. The energy separation of the Ti 3d orbitals was more apparent with the specimen of x = 0.05, which is related to the donor level from the donor substitution of Nb5+ ion for Ti-sites. Therefore, the simultaneous substitution of Na+/K+ and Nb5+ ions into BaTiO3 can improve dielectric properties, based on the charge-transfer process.
The blood donor identity survey: a multidimensional measure of blood donor motivations.
France, Christopher R; Kowalsky, Jennifer M; France, Janis L; Himawan, Lina K; Kessler, Debra A; Shaz, Beth H
2014-08-01
Evidence indicates that donor identity is an important predictor of donation behavior; however, prior studies have relied on diverse, unidimensional measures with limited psychometric support. The goals of this study were to examine the application of self-determination theory to blood donor motivations and to develop and validate a related multidimensional measure of donor identity. Items were developed and administered electronically to a sample of New York Blood Center (NYBC) donors (n=582) and then to a sample of Ohio University students (n=1005). Following initial confirmatory factor analysis (CFA) on the NYBC sample to identify key items related to self-determination theory's six motivational factors, a revised survey was administered to the university sample to reexamine model fit and to assess survey reliability and validity. Consistent with self-determination theory, for both samples CFAs indicated that the best fit to the data was provided by a six-motivational-factor model, including amotivation, external regulation, introjected regulation, identified regulation, integrated regulation, and intrinsic regulation. The Blood Donor Identity Survey provides a psychometrically sound, multidimensional measure of donor motivations (ranging from unmotivated to donate to increasing levels of autonomous motivation to donate) that is suitable for nondonors as well as donors with varying levels of experience. Future research is needed to examine longitudinal changes in donor identity and its relationship to actual donation behavior. © 2014 AABB.
NASA Astrophysics Data System (ADS)
Hung, Cheng-Chun; Lin, Yow-Jon
2018-01-01
The effect of (NH4)2S x treatment on the surface properties of SiO2 is studied. (NH4)2S x treatment leads to the formation of S-Si bonds on the SiO2 surface that serves to reduce the number of donor-like trap states, inducing the shift of the Fermi level toward the conduction band minimum. A finding in this case is the noticeably reduced value of the SiO2 capacitance as the sulfurated layer is formed at the SiO2 surface. The effect of SiO2 layers with (NH4)2S x treatment on the carrier transport behaviors for the pentacene/SiO2-based organic thin-film transistor (OTFT) is also studied. The pentacene/as-cleaned SiO2-based OTFT shows depletion-mode behavior, whereas the pentacene/(NH4)2S x -treated SiO2-based OTFT exhibits enhancement-mode behavior. Experimental identification confirms that the depletion-/enhancement-mode conversion is due to the dominance competition between donor-like trap states in SiO2 near the pentacene/SiO2 interface and acceptor-like trap states in the pentacene channel. A sulfurated layer between pentacene and SiO2 is expected to give significant contributions to carrier transport for pentacene/SiO2-based OTFTs.
Frye, Victoria; Duffy, Louisa; France, Janis L; Kessler, Debra A; Rebosa, Mark; Shaz, Beth H; Carlson, Bruce W
2018-01-01
Background Increasing repeat blood donation behavior is a critical public health goal. According to self-determination theory, the process of developing internal motivation to give blood and an associated self-identity as a blood donor may be promoted by feelings of “relatedness” or a connection to other donors, which may be enhanced through social relations and interactions. Objective The purpose of this report it to describe the development and pilot testing of a social networking-based (Facebook) intervention condition designed to increase feelings of relatedness via virtual social interaction and support. Methods To develop the intervention condition content, images, text, polls, and video content were assembled. Ohio University college students (N=127) rated the content (82 images/text) presented by computer in random order using a scale of one to five on various dimensions of relatedness. Mean ratings were calculated and analyses of variance were conducted to assess associations among the dimensions. Based on these results, the relatedness intervention was adapted and evaluated for feasibility, acceptability, and preliminary efficacy among 24 first-time donors, aged 18 to 24 years, in a 30-day pilot trial. Paired t-tests were conducted to examine change over time in relatedness and connectedness. Results The intervention condition that was developed was acceptable and feasible. Results of the uncontrolled, preintervention, and postintervention evaluation revealed that feelings of individual-level relatedness increased significantly after the intervention. Conclusions By promoting first-time blood donor relatedness, our goal is to enhance internal motivation for donating and the integration of the blood donor identity, thus increasing the likelihood of future repeat donation. Trial Registration ClinicalTrials.gov NCT02717338; https://clinicaltrials.gov/ct2/show/NCT02717338 (Archived by WebCite at http://www.webcitation.org/6ymHRBCwu) PMID:29699961
Hasegawa, Yoichi; Suyama, Yoshihisa; Seiwa, Kenji
2015-01-01
Background In plants, reproductive success is largely determined by the composition of pollen (i.e., self-pollen and outcross-pollen from near and distant pollen-donors) transported as a result of pollinator foraging behavior (e.g., pollen carryover). However, little evidence is available on how and to what extent the pollen carryover affects the pollen-donor composition and on which insect taxa are effective outcross-pollen transporters under field conditions. In this study, we explored roles of foraging behavior of insect pollinators on pollen-donor composition and subsequent reproductive success in a woody plant. Methods We performed paternity analyses based on microsatellite genotyping of individual pollen grains found on diurnal pollinators (i.e., bumblebee, small bee, fly, small beetle, and honeybee) visiting Castanea crenata trees. Results The outcross-pollen rate was highest in bumblebees (66%), followed by small bees (35%), flies (31%), and small beetles (18%). The effective number of pollen donors, representing pollen carryover, was greater in bumblebees (9.71) than in flies (3.40), small bees (3.32), and small beetles (3.06). The high percentages of pollen from outside the plot on bumblebees (65.4%) and flies (71.2%) compared to small bees (35.3%) and small beetles (13.5%) demonstrated their longer pollen dispersal distances. Conclusions All of the diurnal insects carried outcross-pollen grains for long distances via pollen carryover. This fact suggests that a wide range of insect taxa are potential outcross-pollen transporters for the self-incompatible C. crenata. PMID:25793619
Breast milk donation and social support: reports of women donors.
De Alencar, Lucienne Christine Estevez; Seidl, Eliane Maria Fleury
2010-01-01
The study aimed to characterize the behavior of human milk donation and to describe the informal social and formal institutional support, according to reports from women donors. It is an exploratory, cross-sectional, descriptive study using domicile interviews based on structured and semi-structured scripts. The participants were 36 women enrolled in two human milk banks of the public health system of the Federal District. Statistical analysis of quantitative data and categorical content analysis of qualitative data were performed. Categories of reasons that most influenced the frequency of expressing were: food, time availability, negative emotions and fluid intake. The manual expressing technique was reported as predominant. The use of breast shells was cited by almost a third of the donors. Most frequent suggestions for improving institutional support were more attention and support from the milk banks for the donor. The study may serve as a stimulus for the implementation of technical and political strategies to encourage this practice.
van den Hurk, Katja; Zalpuri, Saurabh; Prinsze, Femmeke J; Merz, Eva-Maria; de Kort, Wim L A M
2017-01-01
In donor health research, the 'Healthy Donor Effect' (HDE) often biases study results and hampers their interpretation. This refers to the fact that donors are a selected 'healthier' subset of a population due to both donor selection procedures and self-selection. Donors with long versus short donor careers, or with high versus low donation intensities are often compared to avoid this HDE, but underlying health differences might also cause these differences in behaviour. Our aim was to estimate to what extent a donor´s perceived health status associates with donation cessation and intensity. All active whole blood donors participating in Donor InSight (2007-2009; 11,107 male; 12,616 female) were included in this prospective cohort study. We performed Cox survival and Poisson regression analyses to assess whether self-reported health status, medication use, disease diagnosed by a physician and recently having consulted a general practitioner (GP) or specialist were associated with (time to) donation cessation and donation intensity. At the end of 2013, 44% of the donors in this study had stopped donating. Donors in self-rated good health had a 15% lower risk to stop donating compared to donors in perceived poorer health. Medication use, disease diagnoses and consulting a GP were associated with a 20-40% increased risk to stop donating and a lower donation intensity, when adjusting for age, number of donations and new donor status. Both men and women reporting good health made on average 10% more donations. Donors with a "good" health status were less likely to stop donating blood and tended to donate blood more often than donors with perceived poorer health status. This implies that the HDE is an important source of selection bias in studies on donor health and this includes studies where comparisons within donors are made. This HDE should be adjusted for appropriately when assessing health effects of donation and donors' health status may provide estimates of future donation behavior.
The Effect of Brand Identification on Alumni Supportive Behaviors
ERIC Educational Resources Information Center
Stephenson, Amber L.
2013-01-01
The purpose of this study was to explore the relationship of brand identification and supportive behaviors for alumni of a medium-sized state-run public institution of higher education in the mid-Atlantic region of the US. The research examined the perceptions of donor and non-donor alumni of a state-run public institution of higher education to…
Zalupski, Peter R.; Klaehn, John R.; Peterman, Dean R.
2015-07-30
The feasibility of simultaneous separation of uranium, neptunium, plutonium, americium, and curium from a simulated dissolved used fuel simulant adjusted to 1.0 M nitric acid is investigated using a mixture of the soft donor bis(bis-3,5-trifluoromethyl)phenyl) dithiophosphinic acid (“0”) and the hard donor synergist trioctylphosphine oxide (TOPO) dissolved in toluene. The results reported in this work are compared to our recent demonstration of a complete actinide recovery from a simulated dissolved fuel solution using a synergistic combination of bis(o-trifluoromethylphenyl)dithiophosphinic acid (“1”) and TOPO dissolved in either toluene or trifluoromethylphenyl sulfone. While the extraction efficiency of americium was enhanced for the liquid-liquidmore » system containing “0”, enabling to accomplish a trivalent An/Ln separation at 1.0 M HNO3, the extraction of neptunium was drastically diminished, relative to “1”. The partitioning behavior of curium was also negatively impacted, introducing an effective opportunity for americium/curium separation. Radiometric and spectrophotometric studies demonstrate that the complete actinide recovery using the solvent based upon “0” and TOPO is not feasible. Additionally, the importance of radiolytic degradation processes is discussed through the comparisons of extraction properties of liquid-liquid systems based on both soft donor reagents.« less
Ferguson, Eamonn; Atsma, Femke; de Kort, Wim; Veldhuizen, Ingrid
2012-02-01
Using constructs from the Theory of Planned Behavior and theories of altruism, this article explores how multiple motivations and beliefs for blood donation are clustered and change across the donor career. In so doing important distinctions, for blood donation, between impure altruism, pure altruism, and warm glow are explored. Measures of intentions, cognitive and affective attitudes, role merger, pure altruism, trust, self-efficacy, subjective and moral norms, and habit formation were assessed in a sample of 12,580 whole blood donors. Analyses showed that a distinction between first-time, novice (one to four donations), and experienced donors (five or more donations) is justified. Principal components analysis and confirmatory factor analytic Multiple-Indicator Multiple-Causal models were used to compare models across these groups. A cognition-behavior (CB) factor, including intentions, was common to all groups. First-time and novice donors were marked by a newly identified motivational factor: "reluctant altruism" (i.e., the motivation to donate because of a lack of trust in others). First-time donors exhibited an impure altruism factor whereas for experienced donors warm glow and pure altruism factors were observed. For first-time donors impure altruism and reluctant altruism were both associated with the CB factor in females and impure altruism only in males. For both sexes reluctant altruism was associated of the CB factor in novice donors and warm glow and pure altruism for experienced donors. New avenues for intervention are suggested by the emergence of reluctant altruism for novice donors and warm glow for experienced donors. The importance of distinguishing aspects of altruism is highlighted. © 2012 American Association of Blood Banks.
Delépine-Farvacques, S; Terrade, Florence; Danic, B; Lebaudy, J-P
2017-06-01
The purpose of this study, based on the Theory of planned behavior, is to identify and ultimately better understand what determines the fidelity and the regularity of donors committed in plasmapheresis donation. This qualitative study is a primary stage to establish a classification of donors in a French socio-cultural context. For this reason, we have carried out a survey among 16 regular plasmapheresis donors, by way of semi-structured individual interviews at the Établissement français du sang - Brittany. The level of commitment of these regular donors is considered as a level of appropriation. If subjective norms have initially influenced their decision to donate blood, no specific motivation has been highlighted for them to donate plasma except a generally favourable attitude towards the voluntary donation process. The perception of control over their environment is a variable which played a decisive role in the donor's intention to give, with little cost associated to plasmapheresis donation and recourse to internal causal explanations. A better comprehension of the plasmapheresis donors' determinants should lead us to a more efficient awareness of new potential donors, thereby enhancing recruitment and retention. Due to the increasing need for plasma-derived products, this study's ultimate issue is closely correlated both with ethical and socio-economic aspects. Following which, after analysing the results, a certain number of recommendations will be made. Copyright © 2017 Elsevier Masson SAS. All rights reserved.
26 CFR 1.641(a)-0 - Scope of subchapter J.
Code of Federal Regulations, 2011 CFR
2011-04-01
... rules relating to trusts which distribute current income only (subpart B), estates and trusts which may... mitigation of (i) the progressive rates of tax (including mitigation as a result of deferral of tax) or (ii...
75 FR 28328 - Proposed Collection; Comment Request for Regulation Project
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76 FR 43489 - Deferral for CO2
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.... 221320 Sewage treatment facilities. 562212 Solid waste landfills. Fermentation processes......... 325193... processors burning agricultural biomass residues, using fermentation processes, or producing/using biogas... treatment or manure management processes; CO 2 from fermentation during ethanol production or other...
Facile deferration of commercial fertilizers containing iron chelates for their NMR analysis.
Laghi, Luca; Alcañiz, Sara; Cerdán, Mar; Gomez-Gallego, Mar; Sierra, Miguel Angel; Placucci, Giuseppe; Cremonini, Mauro Andrea
2009-06-24
Ethylenediamine-N,N'-bis(o-hydroxyphenylacetic) acid (o,o-EDDHA) is widely used in commercial formulations as a Fe(3+) chelating agent to remedy iron shortage in calcareous and alkaline soils. Commercially available o,o-EDDHA-Fe(3+) formulations contain a mixture of EDDHA regioisomers (o,p-EDDHA and p,p-EDDHA), together with other, still uncharacterized, products. NMR spectroscopy can be applied to their study as long as iron is accurately removed prior to the observation. This paper shows that it is possible to obtain a deferrated solution of the organic ligands present in commercial fertilizers containing the EDDHA-Fe(3+) chelate by treating the chelate with ferrocyanide, thus forming Prussian Blue that can be easily removed by centrifugation. This iron removal process does not cause significant losses of the o,o-EDDHA ligand or its minor structural isomers.
Duarte, Cristina Maria Rabelais; Marcelino, Miguel Abud; Boccolini, Cristiano Siqueira; Boccolini, Patrícia de Moraes Mello
2017-11-01
This paper describes the historical development and profile of Continuous Cash Benefit (BPC) applicants, intended for poor elderly and people with disabilities, which, since 2009, uses eligibility criteria based on the International Classification of Functioning, Disability and Health (ICF) of the WHO and is aligned with the UN Convention on the Rights of Persons with Disabilities. The behavior of benefits was determined from the analysis the coefficients of the general and non-judicial grants between 1998 and 2014. The profile was established for the years 2010 and 2014 according to situation of acceptance, age, gender and ICF components. The average annual growth of the coefficient was higher from 2000 to 2010, prior to the adoption of the biopsychosocial eligibility model, and the coefficient of non-judicial grants increased until 2010, falling thereafter. The deferrals acceptance /rejections ratio was higher among children and among those facing severe or total environmental barriers, limitations, constraints and bodily changes. The implementation of the biopsychosocial evaluation model did not cause an increased rate of grants and results evidence the need for flexibility in the eligibility criteria.
A population management system for improving colorectal cancer screening in a primary care setting.
Wu, Charlotte A; Mulder, Amara L; Zai, Adrian H; Hu, Yuanshan; Costa, Manuela; Tishler, Lori Wiviott; Saltzman, John R; Ellner, Andrew L; Bitton, Asaf
2016-06-01
Provision of colorectal cancer (CRC) screening in primary care is suboptimal; failure to observe screening guidelines poses unnecessary risks to patients and doctors. Implement a population management system for CRC screening; evaluate impact on compliance with evidence-based guidelines. A quasi-experimental, prospective quality improvement study design using pre-post-analyses with concurrent controls. Six suites within an academic primary care practice. 5320 adults eligible for CRC screening treated by 70 doctors. In three intervention suites, doctors reviewed real-time rosters of patients due for CRC screening and chose practice delegate outreach or default reminder letter. Delegates tracked overdue patients, made outreach calls, facilitated test ordering, obtained records and documented patient deferral, exclusion or decline. In three control suites, doctors followed usual preventive care practices. CRC screening compliance (including documented decline, deferral or exclusion) and CRC screening completion rates over 5 months. At baseline, there was no significant difference in CRC screening compliance (I: 80.4% and C: 79.6%, P = 0.439) and CRC screening completion rates (I: 78.3% and C: 77.3%, P = 0.398) between intervention and control groups. Post-intervention, compliance rates (I: 88.1% and C: 80.5%, P < 0.01) and completion rates (I: 81.0% and C: 78.1%, P < 0.05) were significantly higher in the intervention group. A population management system using closed-loop communication may improve CRC screening compliance and completion rates within academic primary care practices. Team-based care using well-designed IT systems can enable sharing of patient care responsibilities and improve patient outcomes. © 2015 John Wiley & Sons, Ltd.
Ramifications of codoping SrI2:Eu with isovalent and aliovalent impurities
NASA Astrophysics Data System (ADS)
Feng, Qingguo; Biswas, Koushik
2016-12-01
Eu2+ doped SrI2 is an important scintillator having applications in the field of radiation detection. Codoping techniques are often useful to improve the electronic response of such insulators. Using first-principles based approach, we report on the properties of SrI2:Eu and the influence of codoping with aliovalent (Na, Cs) and isovalent (Mg, Ca, Ba, and Sn) impurities. These codopants do not preferably bind with Eu and are expected to remain as isolated impurities in the SrI2 host. As isolated defects they display amphoteric behavior having, in most cases, significant ionization energies of the donor and acceptor levels. Furthermore, the acceptor states of Na, Cs, and Mg can bind with I-vacancy forming charge compensated donor-acceptor pairs. Such pairs may also bind additional holes or electrons similar to the isolated defects. Lack of deep-to-shallow behavior upon codoping and its ramifications will be discussed.
Coulon, M; Baudoin, C; Abdi, H; Heyman, Y; Deputte, B L
2010-12-01
For more than ten years, reproductive biotechnologies using somatic cell nuclear transfer have made possible the production of cloned animals in various domestic and laboratory species. The influence of the cloning process on offspring characteristics has been studied in various developmental aspects, however, it has not yet been documented in detail for behavioral traits. Behavioral studies of cloned animals have failed to show clear inter-individual differences associated with the cloning process. Preliminary results showed that clones favor each other's company. Preferential social interactions were observed among cloned heifers from the same donor in a mixed herd that also included cloned heifers and control heifers produced by artificial insemination (AI). These results suggest behavioral differences between cloned and non-cloned animals and similarities between clones from the same donor. The aim of the present study was to replicate and to extend these previous results and to study behavioral and cognitive mechanisms of this preferential grouping. We studied a group composed of five cloned heifers derived from the same donor cow, two cloned heifers derived from another donor cow, and AI heifers. Cloned heifers from the same donor were more spatially associated and interacted more between themselves than with heifers derived from another donor or with the AI individuals. This pattern indicates a possible kin discrimination in clones. To study this process, we performed an experiment (using an instrumental conditioning procedure with food reward) of visual discrimination between images of heads of familiar heifers, either related to the subjects or not. The results showed that all subjects (AI and cloned heifers) discriminated between images of familiar cloned heifers produced from the same donor and images of familiar unrelated heifers. Cattle discriminated well between images and used morphological similarities characteristic of cloned related heifers. Our results suggest similar cognitive capacities of kin and non kin discrimination in AI and cloned animals. Kinship may be a common factor in determining the social grouping within a herd. Copyright © 2010 Elsevier Inc. All rights reserved.
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2013-04-19
... treatment, or manure management processes; CO 2 from fermentation during ethanol production or other industrial fermentation processes; CO 2 from combustion of the biological fraction of municipal solid waste...
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... information technology; and (e) the annual costs burden to respondents or record keepers from the collection.... Estimated Time per Response: 12 minutes. Estimated Total Annual Burden Hours: 280. Dated: December 13, 2010...
2012-01-01
Background Throughout the world there is an insufficient supply of donor organs to meet the demand for organ transplantations. This paper presents a protocol for a randomised controlled trial, testing whether a simple, theory-based anticipated regret manipulation leads to a significant increase in posthumous organ donor registrations. Methods We will use a between-groups, prospective randomised controlled design. A random sample of 14,520 members of the adult Scottish general public will be contacted via post. These participants will be randomly allocated into 1 of the 4 conditions. The no questionnaire control (NQC) group will simply receive a letter and donor registration form. The questionnaire control (QC) arm will receive a questionnaire measuring their emotions and non-cognitive affective attitudes towards organ donation. The theory of planned behavior (TPB) group will complete the emotions and affective attitudes questionnaire plus additional items assessing their cognitive attitudes towards organ donation, perceived control over registration and how they think significant others view this action. Finally, the anticipated regret (AR) group will complete the same indices as the TPB group, plus two additional anticipated regret items. These items will assess the extent to which the participant anticipates regret for not registering as an organ donor in the near future. The outcome variable will be NHS Blood and Transplant verified registrations as an organ donor within 6 months of receiving our postal intervention. Discussion This study will assess whether simply asking people to reflect on the extent to which they may anticipate regret for not registering as an organ donor increases organ donor registration 6 months later. If successful, this simple and easy to administer theory-based intervention has the potential to save lives and money for the NHS by reducing the number of people receiving treatments such as dialysis. This intervention may also be incorporated into future organ donor campaigns. Trial registration number ISRCTN: ISRCTN92204897 PMID:22401534
NASA Astrophysics Data System (ADS)
Stampfl, C.; Van de Walle, Chris G.
1998-01-01
N-type AlxGa1-xN exhibits a dramatic decrease in the free-carrier concentration for x⩾0.40. Based on first-principles calculations, we propose that two effects are responsible for this behavior: (i) in the case of doping with oxygen (the most common unintentional donor), a DX transition occurs, which converts the shallow donor into a deep level; and (ii) compensation by the cation vacancy (VGa or VAl), a triple acceptor, increases with alloy composition x. For p-type doping, the calculations indicate that the doping efficiency decreases due to compensation by the nitrogen vacancy. In addition, an increase in the acceptor ionization energy is found with increasing x.
Nitric oxide donor augments antineoplastic effects of arginine deprivation in human melanoma cells.
Mayevska, Oksana; Chen, Oleh; Karatsai, Olena; Bobak, Yaroslav; Barska, Maryna; Lyniv, Liliana; Pavlyk, Iuliia; Rzhepetskyy, Yuriy; Igumentseva, Natalia; Redowicz, Maria Jolanta; Stasyk, Oleh
2017-06-15
Anticancer therapy based on recombinant arginine-degrading enzymes has been proposed for the treatment of several types of malignant cells deficient in arginine biosynthesis. One of the predicted side effects of such therapy is restricted bioavailability of nitric oxide as arginine catabolic product. Prolonged NO limitation may lead to unwanted disturbances in NO-dependent vasodilation, cardiovascular and immune systems. This problem can be overcome by co-supplementation with exogenous NO donor. However, NO may potentially counteract anticancer effects of therapy based on arginine deprivation. In this study, we evaluate for the first time the effects of an exogenous NO donor, sodium nitroprusside, on viability and metastatic properties of two human melanoma cell lines SK-MEL-28 and WM793 under arginine-deprived conditions. It was revealed that NO did not rescue melanoma cells from specific effects evoked by arginine deprivation, namely decreased viability and induction of apoptosis, dramatically reduced motility, invasiveness and clonogenic potential. Moreover, sodium nitroprusside co-treatment augmented several of these antineoplastic effects. We report that a combination of NO-donor and arginine deprivation strongly and specifically impaired metastatic behavior of melanoma cells. Thus, sodium nitroprusside can be considered as an adjuvant for the more efficient treatment of malignant melanoma and possibly other tumors with arginine-degrading enzymes. Copyright © 2017 Elsevier Inc. All rights reserved.
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26 CFR 1.409A-0 - Table of contents.
Code of Federal Regulations, 2013 CFR
2013-04-01
.... (ii) Participation by nonresident aliens, certain resident aliens, and bona fide residents of.... (iii) Tax equalization agreements. (iv) Certain limited deferrals of a nonresident alien. (v...) Alternative methods of compliance. (7) Nonresident alien employees. (8) Elections affecting the identification...
26 CFR 1.409A-0 - Table of contents.
Code of Federal Regulations, 2014 CFR
2014-04-01
.... (ii) Participation by nonresident aliens, certain resident aliens, and bona fide residents of.... (iii) Tax equalization agreements. (iv) Certain limited deferrals of a nonresident alien. (v...) Alternative methods of compliance. (7) Nonresident alien employees. (8) Elections affecting the identification...
26 CFR 1.409A-0 - Table of contents.
Code of Federal Regulations, 2011 CFR
2011-04-01
.... (ii) Participation by nonresident aliens, certain resident aliens, and bona fide residents of.... (iii) Tax equalization agreements. (iv) Certain limited deferrals of a nonresident alien. (v...) Alternative methods of compliance. (7) Nonresident alien employees. (8) Elections affecting the identification...
26 CFR 1.409A-0 - Table of contents.
Code of Federal Regulations, 2012 CFR
2012-04-01
.... (ii) Participation by nonresident aliens, certain resident aliens, and bona fide residents of.... (iii) Tax equalization agreements. (iv) Certain limited deferrals of a nonresident alien. (v...) Alternative methods of compliance. (7) Nonresident alien employees. (8) Elections affecting the identification...
29 CFR 1420.8 - FMCS deferral to parties' own private factfinding procedures.
Code of Federal Regulations, 2010 CFR
2010-07-01
... responsibilities under the Act. The Service will decline to appoint a BoI and leave the selection and appointment... there can be no strike or lockout and no changes in conditions of employment (except by mutual agreement...
29 CFR 1420.8 - FMCS deferral to parties' own private factfinding procedures.
Code of Federal Regulations, 2011 CFR
2011-07-01
... responsibilities under the Act. The Service will decline to appoint a BoI and leave the selection and appointment... there can be no strike or lockout and no changes in conditions of employment (except by mutual agreement...
ERIC Educational Resources Information Center
Crocetti, Elisabetta; Rabaglietti, Emanuela; Sica, Luigia Simona
2012-01-01
This chapter discusses specifics of identity formation in Italian adolescents and emerging adults. We review consistent evidence illustrating that, in Italy, a progressive deferral of transition to adulthood strongly impacts youth identity development by stimulating identity exploration and postponement of identity commitments. We also consider…
Re-examining blood donor deferral criteria relating to injecting drug use.
Quinn, Brendan; Seed, Clive; Keller, Anthony; Maher, Lisa; Wilson, David; Farrell, Michael; Caris, Sharon; Williams, Jennifer; Madden, Annie; Thompson, Alexander; Pink, Joanne; Hellard, Margaret E
2017-10-01
Potential Australian blood donors are deferred indefinitely if they report a history of injecting drug use (IDU), or for 12 months if they report having engaged in sexual activity with someone who might have ever injected. Given incremental improvements in blood safety, this study sought to examine whether Australia's IDU-related eligibility criteria reflected current scientific evidence, were consistent with international best practice and, if current IDU-related policies were to be changed, how this should happen. An expert committee was formed to review relevant literature with a focus on issues including: the epidemiology of IDU in Australia and key transfusion-transmissible infections (TTIs) among Australian people who inject drugs (PWID); and, 'non-compliance' among PWID regarding IDU-related blood donation guidelines. International policies relating to blood donation and IDU were also reviewed. Modelling with available data estimated the risk of TTIs remaining undetected if the Blood Service's IDU-related guidelines were changed. Very few (<1%) Australians engage in IDU, and IDU risk practices are reported by only a minority of PWID. However, the prevalence of HCV remains high among PWID, and IDU remains a key transmission route for various TTIs. Insufficient data were available to inform appropriate estimates of cessation and relapse among Australian PWID. Modelling findings indicated that the risk of not detecting HIV becomes greater than the reference group at a threshold of non-admission of being an active PWID of around 1.8% (0.5-5.1%). Excluding Japan, all Organisation for the Economic Co-operation and Development member countries permanently exclude individuals with a history of IDU from donating. Numerous research gaps meant that the study's expert Review Committee was unable to recommend altering Australia's current IDU-related blood donation guidelines. However, having identified critical knowledge gaps and future areas of research, the review made important steps toward changing the criteria. Copyright © 2017 Elsevier B.V. All rights reserved.
NASA Astrophysics Data System (ADS)
Hayrapetyan, D. B.; Ohanyan, G. L.; Baghdasaryan, D. A.; Sarkisyan, H. A.; Baskoutas, S.; Kazaryan, E. M.
2018-01-01
Hydrogen-like donor impurity states in strongly oblate ellipsoidal quantum dot have been studied. The hydrogen-like donor impurity states are investigated within the framework of variational method. The trial wave function constructed on the base of wave functions of the system without impurity. The dependence of the energy and binding energy for the ground and first excited states on the geometrical parameters of the ellipsoidal quantum dot and on the impurity position have been calculated. The behavior of the oscillator strength for different angles of incident light and geometrical parameters have been revealed. Photoionization cross-section of the electron transitions from the impurity ground state to the size-quantized ground and first excited states have been studied. The effects of impurity position and the geometrical parameters of the ellipsoidal quantum dot on the photoionization cross section dependence on the photon energy have been considered.
Ye, Long; Sun, Kai; Jiang, Wei; Zhang, Shaoqing; Zhao, Wenchao; Yao, Huifeng; Wang, Zhaohui; Hou, Jianhui
2015-05-06
Among the diverse nonfullerene acceptors, perylene bisimides (PBIs) have been attracting much attention due to their excellent electron mobility and tunable molecular and electronic properties by simply engineering the bay and head linkages. Herein, guided by two efficient small molecular acceptors, we designed, synthesized, and characterized a new nonfullerene small molecule PPDI with fine-tailored alkyl chains. Notably, a certificated PCE of 5.40% is realized in a simple structured fullerene-free polymer solar cell comprising PPDI as the electron acceptor and a fine-tailored 2D-conjugated polymer PBDT-TS1 as the electron donor. Moreover, the device behavior, morphological feature, and origin of high efficiency in PBDT-TS1/PPDI-based fullerene-free PSC were investigated. The synchronous selection and design of donor and acceptor materials reported here offer a feasible strategy for realizing highly efficient fullerene-free organic photovoltaics.
Seroepidemiology of infection with Toxoplasma gondii in healthy blood donors of Durango, Mexico.
Alvarado-Esquivel, Cosme; Mercado-Suarez, Miguel Francisco; Rodríguez-Briones, Alfredo; Fallad-Torres, Laura; Ayala-Ayala, Julio Octavio; Nevarez-Piedra, Luis Jorge; Duran-Morales, Ehecatl; Estrada-Martínez, Sergio; Liesenfeld, Oliver; Márquez-Conde, José Angel; Martínez-García, Sergio Arturo
2007-07-13
Toxoplasma gondii (T. gondii) infection in blood donors could represent a risk for transmission in blood recipients. There is scarce information about the epidemiology of T. gondii infection in blood donors in Mexico. Therefore, we sought to determine the prevalence of T. gondii infection and associated socio-demographic and behavioral characteristics in a population of healthy blood donors of Durango City, Mexico. Four hundred and thirty two blood donors in two public blood banks of Durango City, Mexico were examined for T. gondii infection between August to September 2006. Blood donors were tested for anti-T. gondii IgG and IgM antibodies by using enzyme-linked immunoassays (Diagnostic Automation Inc., Calabasas, CA, USA). Socio-demographic and behavioral characteristics from each participant were also obtained. Thirty two (7.4%) of 432 blood donors had IgG anti-T. gondii antibodies. Eight (1.9%) of them had also IgM anti-T. gondii antibodies. Multivariate analysis using logic regression showed that T. gondii infection was associated with the presence of cats at home (adjusted OR = 3.81; 95% CI: 1.45-10.01). The age group of 45-60 years showed a significantly higher frequency of T. gondii infection than the group of 25-34 years (p = 0.02). Blood donors without education had a significantly higher frequency of infection (15.8%) than those with 13-19 years of education (4.5%) (p = 0.04). Other characteristics of blood donors including male gender, consumption of undercooked meat or blood transfusion did not show an association with infection. The prevalence of T. gondii infection in healthy blood donors of Durango City, Mexico is lower than those reported in blood donors of south and central Mexico, and is one of the lowest reported in blood donors worldwide. T. gondii infection in our blood donors was most likely acquired by contact with cats. Prevalence of infection increased with age and decreased with educational level.
Seroepidemiology of infection with Toxoplasma gondii in healthy blood donors of Durango, Mexico
Alvarado-Esquivel, Cosme; Mercado-Suarez, Miguel Francisco; Rodríguez-Briones, Alfredo; Fallad-Torres, Laura; Ayala-Ayala, Julio Octavio; Nevarez-Piedra, Luis Jorge; Duran-Morales, Ehecatl; Estrada-Martínez, Sergio; Liesenfeld, Oliver; Márquez-Conde, José Ángel; Martínez-García, Sergio Arturo
2007-01-01
Background Toxoplasma gondii (T. gondii) infection in blood donors could represent a risk for transmission in blood recipients. There is scarce information about the epidemiology of T. gondii infection in blood donors in Mexico. Therefore, we sought to determine the prevalence of T. gondii infection and associated socio-demographic and behavioral characteristics in a population of healthy blood donors of Durango City, Mexico. Methods Four hundred and thirty two blood donors in two public blood banks of Durango City, Mexico were examined for T. gondii infection between August to September 2006. Blood donors were tested for anti-T. gondii IgG and IgM antibodies by using enzyme-linked immunoassays (Diagnostic Automation Inc., Calabasas, CA, USA). Socio-demographic and behavioral characteristics from each participant were also obtained. Results Thirty two (7.4%) of 432 blood donors had IgG anti-T. gondii antibodies. Eight (1.9%) of them had also IgM anti-T. gondii antibodies. Multivariate analysis using logic regression showed that T. gondii infection was associated with the presence of cats at home (adjusted OR = 3.81; 95% CI: 1.45–10.01). The age group of 45–60 years showed a significantly higher frequency of T. gondii infection than the group of 25–34 years (p = 0.02). Blood donors without education had a significantly higher frequency of infection (15.8%) than those with 13–19 years of education (4.5%) (p = 0.04). Other characteristics of blood donors including male gender, consumption of undercooked meat or blood transfusion did not show an association with infection. Conclusion The prevalence of T. gondii infection in healthy blood donors of Durango City, Mexico is lower than those reported in blood donors of south and central Mexico, and is one of the lowest reported in blood donors worldwide. T. gondii infection in our blood donors was most likely acquired by contact with cats. Prevalence of infection increased with age and decreased with educational level. PMID:17629901
Hayward, R David; Krause, Neal; Pargament, Kenneth
2017-12-01
The ways in which religious beliefs influence beliefs about health have important implications for motivation to engage in positive health behaviors and comply with medical treatment. This study examines the prevalence of two health-related religious beliefs: belief in healing miracles and deferral of responsibility for health outcomes to God. Data came from a representative nationwide US survey of religion and health (N = 3010). Full-factorial ANOVA indicated that there were significant differences in both dimensions of belief by race, by religious background, and by the interaction between the two. Black people believed religion played the largest role in health regardless of religious background. Among White and Hispanic groups, Evangelical Protestants placed more responsibility for their health on God in comparison with other religious groups. ANCOVA controlling for background factors socioeconomic status, health, and religious involvement partially explained these group differences.
Pereira, Jefferson Rodrigues; Sousa, Caissa Veloso E; Matos, Eliane Bragança de; Rezende, Leonardo Benedito Oliveira; Bueno, Natália Xavier; Dias, Álvaro Machado
2016-08-01
Currently, in Brazil, 1.78% of the population area blood donors, a level lower than the ideal one that, according to WHO, should be between 3% and 5% of the population. Following this scenario, the current study has a general goal of identifying and analyzing the main critical factors of the process of blood donation in the city of Belo Horizonte, MG, under the perception of donors, potential donors and non donors. A qualitative research approach was conducted, through twenty-four semi-structured interviews. The results highlight the lack of information in the various stages of the blood donation system. During the stages of donor recruitment and awareness, communication actions convey to society incomplete information about the donation process, discouraging future actions of donation. On the other hand, a lack of appreciation of the donation experience and the construction of social values associated with the donor prevent the multiplication of social behaviors for donation. The results of this study, found from theoretical framework outlined in this study, highlight the causes or critical factors that impede changes in behavior, incremental or radical, proposed by social marketing.
Target Population of Non-deferrable Surgery and Uncontrolled Severe Bleeding Related to Dabigatran.
Calabria, Silvia; Forcesi, Emanuele; Dondi, Letizia; Pedrini, Antonella; Maggioni, Aldo Pietro; Martini, Nello
2018-06-04
This observational study was aimed to identify patients who experienced non-deferrable surgery and/or uncontrolled severe bleeding following dabigatran administration and then are potentially eligible to the use of the specific antidote idarucizumab in a real-world setting. From the big Italian real-world database ARCO, a cohort of adult patients treated with dabigatran and hospitalized due to diagnoses attributable to urgent interventions and/or major bleeding was selected in 2014. Baseline characteristics and all-cause hospitalizations, specialist/diagnostic outpatient services, and healthcare costs over the 1-year follow-up were described. Out of 16,756,843 Italian citizens, 271,540 (1.9%) were prescribed with oral anticoagulants, and specifically, 17,450 with dabigatran. Patients identified to be hospitalized for non-deferrable surgery (n = 106) and/or uncontrolled severe bleeding (n = 190) following dabigatran use were 289 (1.7%) [mean age (± SD) 79 ± 7, 50% of female sex]. On average, patients stayed in hospital 13.7 and 17.0 days, respectively. The per patient and per year cost to the Italian National Health System was on average 19,708€ (specifically 1487€ for drugs, of which 311€ for dabigatran, 17,353€ for all-cause hospitalizations, and 869€ for outpatient care), about four times more than the mean healthcare integrated cost of a single patient treated with dabigatran (4775€). This analysis of the ARCO database reliably describes the population potentially eligible to the dabigatran reversal agent, idarucizumab. These data may be useful for Healthcare Decision Makers to organize, define, and improve present and future emergency healthcare, mainly as starting point for cost-effectiveness analyses of new reversal agents.
lbtA and lbtB Are Required for Production of the Legionella pneumophila Siderophore Legiobactin
Allard, Kimberly A.; Viswanathan, V. K.; Cianciotto, Nicholas P.
2006-01-01
Under iron stress, Legionella pneumophila secretes legiobactin, a nonclassical siderophore that is reactive in the chrome azurol S (CAS) assay. Here, we have optimized conditions for legiobactin expression, shown its biological activity, and identified two genes, lbtA and lbtB, which are involved in legiobactin production. lbtA appears to be iron repressed and encodes a protein that has significant homology with siderophore synthetases, and FrgA, a previously described iron-regulated protein of L. pneumophila. lbtB encodes a protein homologous with members of the major facilitator superfamily of multidrug efflux pumps. Mutants lacking lbtA or lbtB were defective for legiobactin, producing 40 to 70% less CAS reactivity in deferrated chemically defined medium (CDM). In bioassays, mutant CDM culture supernatants, unlike those of the wild type, did not support growth of iron-limited wild-type bacteria in 2′,2′-dipyridyl-containing buffered charcoal yeast extract (BCYE) agar and a ferrous iron transport mutant on BCYE agar without added iron. The lbtA mutant was modestly defective for growth in deferrated CDM containing the iron chelator citrate, indicating that legiobactin is required in conditions of severe iron limitation. Complementation of the lbt mutants restored both siderophore expression, as measured by the CAS assay and bioassays, and bacterial growth in deferrated, citrate-containing media. The lbtA mutant replicated as the wild type did in macrophages, amoebae, and the lungs of mice. However, L. pneumophila expresses lbtA in the macrophage, suggesting that legiobactin, though not required, may play a dispensable role in intracellular growth. The discovery of lbtAB represents the first identification of genes required for L. pneumophila siderophore expression. PMID:16452417
Lefrère, Jean-Jacques; Hewitt, Patricia
2009-04-01
Transfusion transmission of the prion, the agent of variant Creutzfeldt-Jakob disease (vCJD), is now established. Subjects infected through food may transmit the disease through blood donations. The two nations most affected to date by this threat are the United Kingdom (UK) and France. The first transfusion cases have been observed in the UK over the past 5 years. In France, a few individuals who developed vCJD had a history of blood donation, leading to a risk of transmission to recipients, some of whom could be incubating the disease. In the absence of a large-scale screening test, it is impossible to establish the prevalence of infection in the blood donor population and transfused patients. This lack of a test also prevents specific screening of blood donations. Thus, prevention of transfusion transmission essentially relies at present on deferral of "at-risk" individuals. Because prions are present in both white blood cells and plasma, leukoreduction is probably insufficient to totally eliminate the transfusion risk. In the absence of a screening test for blood donations, recently developed prion-specific filters could be a solution. Furthermore, while the dietary spread of vCJD seems efficiently controlled, uncertainty remains as to the extent of the spread of prions through blood transfusion and other secondary routes.
Decoding nitric oxide release rates of amine-based diazeniumdiolates.
Wang, Yan-Ni; Collins, Jack; Holland, Ryan J; Keefer, Larry K; Ivanic, Joseph
2013-08-01
Amine-based diazeniumdiolates (NONOates) have garnered widespread use as nitric oxide (NO) donors, and their potential for nitroxyl (HNO) release has more recently been realized. While NO release rates can vary significantly with the type of amine, half-lives of seconds to days under physiological conditions, there is as yet no way to determine a priori the NO or HNO production rates of a given species, and no discernible trends have manifested other than that secondary amines produce only NO (i.e., no HNO). As a step to understanding these complex systems, here we describe a procedure for modeling amine-based NONOates in water solvent that provides an excellent correlation (R(2) = 0.94) between experimentally measured dissociation rates of seven secondary amine species and their computed NO release activation energies. The significant difference in behavior of NONOates in the gas and solvent phases is also rigorously demonstrated via explicit additions of quantum mechanical water molecules. The presented results suggest that the as-yet unsynthesized simplest amine-based NONOate, the diazeniumdiolated ammonia anion [H2N-N(O)═NO(-)], could serve as an unperturbed HNO donor. These results provide a step forward toward the accurate modeling of general NO and/or HNO donors as well as for the identification of tailored prodrug candidates.
Frye, Victoria; Duffy, Louisa; France, Janis L; Kessler, Debra A; Rebosa, Mark; Shaz, Beth H; Carlson, Bruce W; France, Christopher R
2018-04-26
Increasing repeat blood donation behavior is a critical public health goal. According to self-determination theory, the process of developing internal motivation to give blood and an associated self-identity as a blood donor may be promoted by feelings of “relatedness” or a connection to other donors, which may be enhanced through social relations and interactions. The purpose of this report it to describe the development and pilot testing of a social networking-based (Facebook) intervention condition designed to increase feelings of relatedness via virtual social interaction and support. To develop the intervention condition content, images, text, polls, and video content were assembled. Ohio University college students (N=127) rated the content (82 images/text) presented by computer in random order using a scale of one to five on various dimensions of relatedness. Mean ratings were calculated and analyses of variance were conducted to assess associations among the dimensions. Based on these results, the relatedness intervention was adapted and evaluated for feasibility, acceptability, and preliminary efficacy among 24 first-time donors, aged 18 to 24 years, in a 30-day pilot trial. Paired t-tests were conducted to examine change over time in relatedness and connectedness. The intervention condition that was developed was acceptable and feasible. Results of the uncontrolled, preintervention, and postintervention evaluation revealed that feelings of individual-level relatedness increased significantly after the intervention. By promoting first-time blood donor relatedness, our goal is to enhance internal motivation for donating and the integration of the blood donor identity, thus increasing the likelihood of future repeat donation. ClinicalTrials.gov NCT02717338; https://clinicaltrials.gov/ct2/show/NCT02717338 (Archived by WebCite at http://www.webcitation.org/6ymHRBCwu) ©Victoria Frye, Louisa Duffy, Janis L France, Debra A Kessler, Mark Rebosa, Beth H Shaz, Bruce W Carlson, Christopher R. France. Originally published in JMIR Public Health and Surveillance (http://publichealth.jmir.org), 26.04.2018.
NASA Astrophysics Data System (ADS)
Feddi, E.; El-Yadri, M.; Dujardin, F.; Restrepo, R. L.; Duque, C. A.
2017-02-01
In this study, we have investigated the confined donor impurity in a hollow cylindrical-shell quantum dot. The charges are assumed to be completely confined to the interior of the shell with rigid walls. Within the framework of the effective-mass approximation and by using a simple variational approach, we have computed the donor binding energy as a function of the shell sizes in order to study the behavior of the electron-impurity attraction for a very small thickness. Our results show that the binding energy of a donor impurity placed at the center of cylindrical core/shell dots depends strongly on the shell size. The binding energy increases when the shell-wideness becomes smaller and shows the same behavior as in a simple cylindrical quantum dot. A special case has been studied, which corresponds to the ratio between the inner and outer radii near to one (a/b → 1) for which our model gives a non-significant behavior of the impurity binding energy. This fact implies the existence of a critical value (a/b) for which the binding energy of the donor impurity tends to the limit value of 4 effective Rydbergs as in a 2D quantum well. We also analyse the photoionization cross section considering only the in-plane incident radiation polarization. We determine its behavior as a function of photon energy, shell size, and donor position. The measurement of photoionization in such systems would be of great interest to understand the optical properties of carriers in quantum dots.
20 CFR 633.315 - Replacement, corrective action, termination.
Code of Federal Regulations, 2012 CFR
2012-04-01
... subrecipient agreements, development of and compliance with corrective action plans, etc. (c) In cases where..., section 402 programs by reason of congressional action, whether by authorization, appropriation, deferral... onsite, seize bank accounts relating to the program, arrange for the payment of legitimate bills and...
20 CFR 633.315 - Replacement, corrective action, termination.
Code of Federal Regulations, 2011 CFR
2011-04-01
... subrecipient agreements, development of and compliance with corrective action plans, etc. (c) In cases where..., section 402 programs by reason of congressional action, whether by authorization, appropriation, deferral... onsite, seize bank accounts relating to the program, arrange for the payment of legitimate bills and...
The Time Line Technique Teaching Tool in Accounting
ERIC Educational Resources Information Center
Eisner, Emanuel
1977-01-01
Graphic examples of the use of the time line in accounting are presented in five problems statements (with comments) in the following areas: Depreciation expense vs. the contra asset, accumulated depreciation; adjusting entries (deferrals, accruals); discounting notes receivable; bond accounting; and compound interest concepts. (TA)
76 FR 15249 - Deferral for CO2
Federal Register 2010, 2011, 2012, 2013, 2014
2011-03-21
... Agency FR Federal Register GHG Greenhouse gas GWP Global warming potential HFC Hydrofluorocarbon ICR... year, weighted by the global warming potential (GWP) of the particular GHG pollutant, normalized to the... global GHG. Carbon dioxide emissions from a subset of bioenergy sources are reported as information items...
7 CFR 766.105 - Agency consideration of servicing requests.
Code of Federal Regulations, 2010 CFR
2010-01-01
... each eligible borrower who requests servicing: (1) Conservation Contract, if requested; (2) Consolidation and rescheduling or reamortization; (3) Deferral; (4) Writedown; and (5) Current market value... develop a feasible plan; (ii) The borrower will be offered current market value buyout. (2) The borrower's...
Facility Accounting: Hammering Out a Capital Replacement Budget.
ERIC Educational Resources Information Center
Readinger, Jay
1996-01-01
Most facility and finance managers cannot adequately handle school infrastructure issues because they lack the tools to describe the problem appropriately. Facility accounting gives managers accurate deferral and projected replacement costs, using nationally recognized life-cycle and cost data. Facility accounting enables proper management of…
Federal Register 2010, 2011, 2012, 2013, 2014
2012-07-03
... Collection; Comment Request; Capital Construction Fund--Deposit/Withdrawal Report AGENCY: National Oceanic... be commercial fishing industry individuals, partnerships, and corporations which entered into Capital Construction Fund agreements with the Secretary of Commerce allowing deferral of Federal taxation on fishing...
Sacchini, Dario; Craxì, Lucia; Refolo, Pietro; Minacori, Roberta; Cicchetti, Americo; Gasbarrini, Antonio; Cammà, Calogero; Spagnolo, Antonio G
2015-05-01
Since chronic hepatitis C has mostly become curable, issues concerning choice and allocation of treatment are of major concern. We assessed the foremost ethical issues in hepatitis C virus therapy with 1st generation protease inhibitors using the personalist ethical framework within the health technology assessment methodology. Our aim was to identify values at stake/in conflict and to support both the physicians' choices in hepatitis C therapy and social (macro-) allocation decision-making. The ethical assessment indicates that: (1) safety/effectiveness profile of treatment is guaranteed if its use is restricted to the patients subgroups who may benefit from it; (2) patients should be carefully informed, particularly on treatment deferral, and widespread information on these therapies should be implemented; (3) since treatment was proven to be cost-effective, its use is acceptable respecting resource macro-allocation. Concerning individual (micro-) location criteria: (a) criteria for eligibility to treatment should be clearly identified and updated periodically; (b) information on criteria for eligibility/deferral to treatment for specific patients' subgroups should be made widely known. Interferon-based regimens will disappear from use within the next year, with the introduction of highly effective/tolerable combination regimens of direct-acting antivirals, thus profoundly changing social choices. Nonetheless, our model could support future ethical assessment since the evaluation pertaining ethical domains remains generally applicable. Copyright © 2014 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.
Masser, Barbara M; White, Katherine M; Terry, Deborah J
2013-10-01
Using the belief basis of the theory of planned behavior (TPB), the current study explored the rate of mild reactions reported by donors in relation to their first donation and the intention and beliefs of those donors with regard to returning to donate again. A high proportion of first-time donors indicated that they had experienced a reaction to blood donation. Further, donors who reacted were less likely to intend to return to donate. Regression analyses suggested that targeting different beliefs for those donors who had and had not reacted would yield most benefit in bolstering donors' intentions to remain donating. The findings provide insight into those messages that could be communicated via the mass media or in targeted communications to retain first-time donors who have experienced a mild vasovagal reaction. Copyright © 2013 Elsevier Ltd. All rights reserved.
DOE Office of Scientific and Technical Information (OSTI.GOV)
Wu, Di; Jin, Chunlian; Balducci, Patrick J.
2013-12-01
This volume presents the battery storage evaluation tool developed at Pacific Northwest National Laboratory (PNNL), which is used to evaluate benefits of battery storage for multiple grid applications, including energy arbitrage, balancing service, capacity value, distribution system equipment deferral, and outage mitigation. This tool is based on the optimal control strategies to capture multiple services from a single energy storage device. In this control strategy, at each hour, a look-ahead optimization is first formulated and solved to determine battery base operating point. The minute by minute simulation is then performed to simulate the actual battery operation. This volume provide backgroundmore » and manual for this evaluation tool.« less
Code of Federal Regulations, 2014 CFR
2014-01-01
... first lien on a residential mobile home if a creditor covered by this part complies with the consumer... be made on the final scheduled installment. (g) Deferral fees. (1) With respect to mobile home credit... money order; do not send cash. ...
Code of Federal Regulations, 2012 CFR
2012-01-01
... first lien on a residential mobile home if a creditor covered by this part complies with the consumer... be made on the final scheduled installment. (g) Deferral fees. (1) With respect to mobile home credit... money order; do not send cash. ...
Code of Federal Regulations, 2013 CFR
2013-01-01
... first lien on a residential mobile home if a creditor covered by this part complies with the consumer... be made on the final scheduled installment. (g) Deferral fees. (1) With respect to mobile home credit... money order; do not send cash. ...
24 CFR 880.603 - Selection and admission of assisted tenants.
Code of Federal Regulations, 2012 CFR
2012-04-01
... PERSONS WITH DISABILITIES PROGRAM) SECTION 8 HOUSING ASSISTANCE PAYMENTS PROGRAM FOR NEW CONSTRUCTION Management § 880.603 Selection and admission of assisted tenants. (a) Application. The owner must accept... concerning deferral of termination of assistance. (Approved by the Office of Management and Budget under...
24 CFR 880.603 - Selection and admission of assisted tenants.
Code of Federal Regulations, 2013 CFR
2013-04-01
... PERSONS WITH DISABILITIES PROGRAM) SECTION 8 HOUSING ASSISTANCE PAYMENTS PROGRAM FOR NEW CONSTRUCTION Management § 880.603 Selection and admission of assisted tenants. (a) Application. The owner must accept... concerning deferral of termination of assistance. (Approved by the Office of Management and Budget under...
Code of Federal Regulations, 2010 CFR
2010-04-01
... of section 414(j), the annual deferral for a taxable year is the present value of the increase during... value must be determined using actuarial assumptions and methods that are reasonable (both individually... paying length of service awards to bona fide volunteers (and their beneficiaries) on account of qualified...
Code of Federal Regulations, 2011 CFR
2011-04-01
... of section 414(j), the annual deferral for a taxable year is the present value of the increase during... value must be determined using actuarial assumptions and methods that are reasonable (both individually... paying length of service awards to bona fide volunteers (and their beneficiaries) on account of qualified...
Code of Federal Regulations, 2013 CFR
2013-04-01
... of section 414(j), the annual deferral for a taxable year is the present value of the increase during... value must be determined using actuarial assumptions and methods that are reasonable (both individually... paying length of service awards to bona fide volunteers (and their beneficiaries) on account of qualified...
Tuition Tax Credits. Issuegram 19.
ERIC Educational Resources Information Center
Augenblick, John; McGuire, Kent
Approaches for using the federal income tax system to aid families of pupils attending private schools include: tax credits, tax deductions, tax deferrals, and education savings incentives. Tax credit structures can be made refundable and made sensitive to taxpayers' income levels, the level of education expenditures, and designated costs.…
26 CFR 1.409A-0 - Table of contents.
Code of Federal Regulations, 2010 CFR
2010-04-01
... unforeseeable emergency. (4) Disability. (i) In general. (ii) Limited plan definition of disability. (iii) Determination of disability. (5) Change in the ownership or effective control of a corporation, or a change in... upon income inclusion under section 409A. (viii) Cancellation of deferrals following an unforeseeable...
Code of Federal Regulations, 2010 CFR
2010-10-01
... 42 Public Health 4 2010-10-01 2010-10-01 false Audits. 457.202 Section 457.202 Public Health...-Reviews and Audits; Withholding for Failure to Comply; Deferral and Disallowance of Claims; Reduction of Federal Medical Payments § 457.202 Audits. (a) Purpose. The Department's Office of Inspector General (OIG...
18 CFR 367.2550 - Account 255, Accumulated deferred investment tax credits.
Code of Federal Regulations, 2010 CFR
2010-04-01
..., Accumulated deferred investment tax credits. 367.2550 Section 367.2550 Conservation of Power and Water... 255, Accumulated deferred investment tax credits. This account must be credited with all investment tax credits deferred by companies that have elected to follow deferral accounting, partial or full...
Code of Federal Regulations, 2011 CFR
2011-07-01
... OF THE CASH MANAGEMENT IMPROVEMENTS FUND § 206.8 Appeals. (a) An agency that chooses to file an... reduced charge, deferral of the charge, an alternative solution to cash management improvement, or a... Commissioner, Federal Finance, of the Service. The temporary board member will be a cash management official...
1997-02-15
Cytomegalovirus (CMV) retinitis is a common infection and a major cause of visual loss in patients with the acquired immunodeficiency syndrome (AIDS). To evaluate intravenous cidofovir as a treatment for CMV retinitis. Two-stage, multicenter, phase II/III, randomized, controlled clinical trial. Ophthalmology and AIDS services at tertiary care medical centers. 64 patients with AIDS and previously untreated, small, peripheral CMV retinitis lesions (that is, patients at low risk for loss of visual acuity). Patients were randomly assigned to one of three groups: the deferral group, in which treatment was deferred until retinitis progressed; the low-dose cidofovir group, which received cidofovir, 5 mg/kg of body weight once weekly for 2 weeks, then maintenance therapy with cidofovir, 3 mg/kg once every 2 weeks; or the high-dose cidofovir group, which received cidofovir, 5 mg/kg once weekly for 2 weeks, then maintenance therapy with cidofovir, 5 mg/kg once every 2 weeks. To minimize nephrotoxicity, cidofovir was administered with hydration and probenecid. Progression of retinitis, evaluated in a masked manner by a fundus photograph reading center; the amount of retinal area involved by CMV; the loss of visual acuity; and morbidity. Median time to progression was 64 days in the low-dose cidofovir group and 21 days in the deferral group (P = 0.052, log-rank test). The median time to progression was not reached in the high-dose cidofovir group but was 20 days in the deferral group (P = 0.009, log-rank test). Analysis of the rates of increase in the retinal area affected by CMV confirmed the data on time to progression. The three groups had similar rates of visual loss. Proteinuria of 2+ or more occurred at rates of 2.6 per person-year in the deferral group, 2.8 per person-year in the low-dose cidofovir group (P > 0.02), and 6.8 per person-year in the high-dose cidofovir group (P = 0.135). No patient developed 4+ proteinuria, but two cidofovir recipients developed persistent elevations of serum creatinine levels at more than 177 mumol/L (2.0 mg/dL). Reactions to probenecid occurred at a rate of 0.70 per person-year. Intravenous cidofovir, high- or low-dose, effectively slowed the progression of CMV retinitis. Concomitant probenecid and hydration therapy, intermittent dosing, and monitoring for proteinuria seemed to minimize but not eliminate the risk for nephrotoxicity.
NASA Astrophysics Data System (ADS)
Yukita, Mihoko; Tzanavaris, Panayiotis; Corbet, Robin; Ptak, Andrew; Hornschemeier, Ann; Pottschmidt, Katja; Ballhausen, Ralf; Enoto, Teruaki; Antoniou, Vallia; Lehmer, Bret; Maccarone, Thomas J.; Wik, Daniel; Williams, Ben; Zezas, Andreas
2018-01-01
Recent NuSTAR-Swift observations revealed that a single resolved X-ray source, Swift J0042.6+4112, with Lx of a few times 1038 erg/s dominates the hard X-ray emission from the Andromeda galaxy. HST-based stellar population synthesis modeling combined with the 0.5-50 keV spectral shape suggests that this might be an X-ray pulsar with an intermediate- (or low-) mass donor. Here we further explore the alternative scenario of a symbiotic or ultracompact X-ray binary, based on long-term variability from Swift observations between 2005 and 2016. We find that the soft (0.3-8.0 keV) X-ray flux varies within a factor of 4 but does not exhibit transient behavior. Its power spectrum suggests a 6.1-day period. Additionally, we find a strong 3s-period candidate from both NuSTAR and XMM observations taken in 2017. If interpreted as an orbital and spin period respectively, the source's temporal behavior would not support either the symbiotic or the ultracompact X-ray binary scenario. Rather, it is more consistent with an accreting pulsar with a higher mass donor.
15 CFR Appendix B to Part 30 - AES Filing Codes
Code of Federal Regulations, 2014 CFR
2014-01-01
... charity FS—Foreign Military Sales ZD—North American Free Trade Agreements (NAFTA) duty deferral shipments...—Validated End User Authorization C58CCD—Consumer Communication Devices C59STA—Strategic Trade Authorization Department of Energy/National Nuclear Security Administration (DOE/NNSA) Codes E01—DOE/NNSA Nuclear...
Federal Register 2010, 2011, 2012, 2013, 2014
2013-02-28
... defers until July 21, 2014 the application of the Prevention of Significant Deterioration (PSD... Other Biogenic Sources Under the Prevention of Significant Deterioration Program AGENCY: Environmental... July 21, 2014 the application of PSD permitting requirements to biogenic CO 2 emissions from bioenergy...
12 CFR 226.47 - Content of disclosures.
Code of Federal Regulations, 2010 CFR
2010-01-01
... a covered educational institution may have school-specific education loan benefits and terms not... will be higher if the loan is not co-signed or guaranteed. (2) Fees and default or late payment costs... payment deferral option applicable while the student is enrolled at a covered educational institution: (A...
Federal Register 2010, 2011, 2012, 2013, 2014
2012-10-30
... program delegation, authorization or approval.'' Virginia's Immunity law, Va. Code Sec. 10.1-1199..., regulation, permit, or administrative order is granted immunity from administrative or civil penalty. The... inapplicable to enforcement of any Federally authorized programs, since ``no immunity could be afforded from...
Deferring Totality: An Anti-Dialectic Theory of Identity
ERIC Educational Resources Information Center
Powell, David M.; Noel, Jana
2010-01-01
Using Derrida's concept of deferring totality, Deleuze's concept of the logic of multiplicities, and Butler's "sliding scale," this paper presents an anti-dialectic theory of identity, one that recognizes the permanent deferral of the very concept of identity--a non-synthesized, non-resolved identity--that values the hybridity of identities.…
47 CFR 0.401 - Location of Commission offices.
Code of Federal Regulations, 2012 CFR
2012-10-01
... exemption, waiver or deferral from the fee requirement), should be delivered to one of the following... Commission, P.O. Box IT-70, Gettysburg, PA 17326. (4) The locations of the field offices of the Compliance... boxes for the receipt of different types of applications. It will also establish special post office...
Code of Federal Regulations, 2010 CFR
2010-10-01
... 42 Public Health 4 2010-10-01 2010-10-01 false Audits. 457.236 Section 457.236 Public Health...-Reviews and Audits; Withholding for Failure to Comply; Deferral and Disallowance of Claims; Reduction of Federal Medical Payments § 457.236 Audits. The CHIP agency must assure appropriate audit of records on...
Federal Register 2010, 2011, 2012, 2013, 2014
2013-05-22
... ENVIRONMENTAL PROTECTION AGENCY 40 CFR Part 52 [EPA-R05-OAR-2011-0467; EPA-R05-OAR-2012-0538; FRL-9808-9] Approval and Promulgation of Air Quality Implementation Plans; Wisconsin; Prevention of Significant Deterioration Greenhouse Gas Tailoring and Biomass Deferral Rule AGENCY: Environmental Protection...
29 CFR 1640.11 - EEOC review of deferred charges.
Code of Federal Regulations, 2014 CFR
2014-07-01
... 29 Labor 4 2014-07-01 2014-07-01 false EEOC review of deferred charges. 1640.11 Section 1640.11 Labor Regulations Relating to Labor (Continued) EQUAL EMPLOYMENT OPPORTUNITY COMMISSION PROCEDURES FOR... EEOC review of deferred charges. (a) Deferral by the EEOC. When it is determined that a section 504...
29 CFR 1640.11 - EEOC review of deferred charges.
Code of Federal Regulations, 2010 CFR
2010-07-01
... 29 Labor 4 2010-07-01 2010-07-01 false EEOC review of deferred charges. 1640.11 Section 1640.11 Labor Regulations Relating to Labor (Continued) EQUAL EMPLOYMENT OPPORTUNITY COMMISSION PROCEDURES FOR... EEOC review of deferred charges. (a) Deferral by the EEOC. When it is determined that a section 504...
29 CFR 1640.11 - EEOC review of deferred charges.
Code of Federal Regulations, 2012 CFR
2012-07-01
... 29 Labor 4 2012-07-01 2012-07-01 false EEOC review of deferred charges. 1640.11 Section 1640.11 Labor Regulations Relating to Labor (Continued) EQUAL EMPLOYMENT OPPORTUNITY COMMISSION PROCEDURES FOR... EEOC review of deferred charges. (a) Deferral by the EEOC. When it is determined that a section 504...
29 CFR 1640.11 - EEOC review of deferred charges.
Code of Federal Regulations, 2011 CFR
2011-07-01
... 29 Labor 4 2011-07-01 2011-07-01 false EEOC review of deferred charges. 1640.11 Section 1640.11 Labor Regulations Relating to Labor (Continued) EQUAL EMPLOYMENT OPPORTUNITY COMMISSION PROCEDURES FOR... EEOC review of deferred charges. (a) Deferral by the EEOC. When it is determined that a section 504...
DOE Office of Scientific and Technical Information (OSTI.GOV)
Savchenko, D., E-mail: dariyasavchenko@gmail.com; National Technical University of Ukraine “Kyiv Polytechnic Institute”, Kyiv 03056; Kalabukhova, E.
2016-01-28
We have studied the temperature behavior of the electron spin resonance (ESR) spectra of nitrogen (N) donors in n-type 6H SiC crystals grown by Lely and sublimation sandwich methods (SSM) with donor concentration of 10{sup 17 }cm{sup −3} at T = 60–150 K. A broad signal in the ESR spectrum was observed at T ≥ 80 K with Lorentzian lineshape and g{sub ||} = 2.0043(3), g{sub ⊥} = 2.0030(3), which was previously assigned in the literature to the N donors in the 1s(E) excited state. Based on the analysis of the ESR lineshape, linewidth and g-tensor we attribute this signal to the conduction electrons (CE). The emergence of the CE ESRmore » signal at T > 80 K was explained by the ionization of electrons from the 1s(A{sub 1}) ground and 1s(E) excited states of N donors to the conduction band while the observed reduction of the hyperfine (hf) splitting for the N{sub k1,k2} donors with the temperature increase is attributed to the motional narrowing effect of the hf splitting. The temperature dependence of CE ESR linewidth is described by an exponential law (Orbach process) with the activation energy corresponding to the energy separation between 1s(A{sub 1}) and 1s(E) energy levels for N residing at quasi-cubic sites (N{sub k1,k2}). The theoretical analysis of the temperature dependence of microwave conductivity measured by the contact-free method shows that due to the different position of the Fermi level in two samples the ionization of free electrons occurs from the energy levels of N{sub k1,k2} donors in Lely grown samples and from the energy level of N{sub h} residing at hexagonal position in 6H SiC grown by SSM.« less
A 2 (aid vs. no aid) x 2 (high vs. low resource potential donor) factorial design tested the effects of aid and donor resources on recipient self ...to self - esteem inherent in aid and subsequent self -help is discussed in terms of self - esteem theory. (Modified author abstract)...perceptions and subsequent self -help behavior. The results were characterized by interactions between the two factors. The relationship between threat
DOE Office of Scientific and Technical Information (OSTI.GOV)
Zalupski, Peter R.; Klaehn, John R.; Peterman, Dean R.
The feasibility of simultaneous separation of uranium, neptunium, plutonium, americium, and curium from a simulated dissolved used fuel simulant adjusted to 1.0 M nitric acid is investigated using a mixture of the soft donor bis(bis-3,5-trifluoromethyl)phenyl) dithiophosphinic acid (“0”) and the hard donor synergist trioctylphosphine oxide (TOPO) dissolved in toluene. The results reported in this work are compared to our recent demonstration of a complete actinide recovery from a simulated dissolved fuel solution using a synergistic combination of bis(o-trifluoromethylphenyl)dithiophosphinic acid (“1”) and TOPO dissolved in either toluene or trifluoromethylphenyl sulfone. While the extraction efficiency of americium was enhanced for the liquid-liquidmore » system containing “0”, enabling to accomplish a trivalent An/Ln separation at 1.0 M HNO3, the extraction of neptunium was drastically diminished, relative to “1”. The partitioning behavior of curium was also negatively impacted, introducing an effective opportunity for americium/curium separation. Radiometric and spectrophotometric studies demonstrate that the complete actinide recovery using the solvent based upon “0” and TOPO is not feasible. Additionally, the importance of radiolytic degradation processes is discussed through the comparisons of extraction properties of liquid-liquid systems based on both soft donor reagents.« less
Diez, Alejandro; Powelson, John; Sundaram, Chandru P; Taber, Tim E; Mujtaba, Muhammad A; Yaqub, Muhammad S; Mishler, Dennis P; Goggins, William C; Sharfuddin, Asif A
2014-06-01
Living donor evaluation involves imaging to determine the choice of kidney for nephrectomy. Our aim was to study the diagnostic accuracy and correlation between CT-based volume measurements and split renal function (SRF) as measured by nuclear renography in potential living donors and its impact on kidney selection decision. We analyzed 190 CT-based volume measurements in healthy donors, of which 65 donors had a radionuclide study performed to determine SRF. There were no differences in demographics, anthropometric measurements, total volumes, eGFR, creatinine clearances between those who required a nuclear scan and those who did not. There was a significant correlation between CT-volume-measurement-based SRF and nuclear-scan-based SRF (Pearson coefficient r 0.59; p < 0.001). Furthermore, selective nuclear-based SRF allowed careful selection of donor nephrectomy, leaving the donor with the higher functioning kidney in most cases. There was also a significantly higher number of right-sided nephrectomies selected after nuclear-based SRF studies. CT-based volume measurements in living donor imaging have sufficient correlation with nuclear-based SRF. Selective use of nuclear-scan-based SRF allows careful selection for donor nephrectomy. © 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.
Donor Behavior and Voluntary Support for Higher Education Institutions.
ERIC Educational Resources Information Center
Leslie, Larry L.; Ramey, Garey
Voluntary support of higher education in America is investigated through regression analysis of institutional characteristics at two points in time. The assumption of donor rationality together with explicit consideration of interorganizational relationships offers a coherent framework for the analysis of voluntary support by the major…
Direct view at colossal permittivity in donor-acceptor (Nb, In) co-doped rutile TiO2
NASA Astrophysics Data System (ADS)
Mandal, Suman; Pal, Somnath; Kundu, Asish K.; Menon, Krishnakumar S. R.; Hazarika, Abhijit; Rioult, Maxime; Belkhou, Rachid
2016-08-01
Topical observations of colossal permittivity (CP) with low dielectric loss in donor-acceptor cations co-doped rutile TiO2 have opened up several possibilities in microelectronics and energy-storage devices. Yet, the precise origin of the CP behavior, knowledge of which is essential to empower the device integration suitably, is highly disputed in the literature. From spectromicroscopic approach besides dielectric measurements, we explore that microscopic electronic inhomogeneities along with the nano-scale phase boundaries and the low temperature polaronic relaxation are mostly responsible for such a dielectric behavior, rather than electron-pinned defect-dipoles/grain-boundary effects as usually proposed. Donor-acceptor co-doping results in a controlled carrier-hopping inevitably influencing the dielectric loss while invariably upholding the CP value.
Sylvester-Hvid, Kristian O; Ratner, Mark A
2005-01-13
An extension of our two-dimensional working model for photovoltaic behavior in binary polymer and/or molecular photoactive blends is presented. The objective is to provide a more-realistic description of the charge generation and charge separation processes in the blend system. This is achieved by assigning an energy to each of the possible occupation states, describing the system according to a simple energy model for exciton and geminate electron-hole pair configurations. The energy model takes as primary input the ionization potential, electron affinity and optical gap of the components of the blend. The underlying photovoltaic model considers a nanoscopic subvolume of a photoactive blend and represents its p- and n-type domain morphology, in terms of a two-dimensional network of donor and acceptor sites. The nearest-neighbor hopping of charge carriers in the illuminated system is described in terms of transitions between different occupation states. The equations governing the dynamics of these states are cast into a linear master equation, which can be solved for arbitrary two-dimensional donor-acceptor networks, assuming stationary conditions. The implications of incorporating the energy model into the photovoltaic model are illustrated by simulations of the short circuit current versus thickness of the photoactive blend layer for different choices of energy parameters and donor-acceptor topology. The results suggest the existence of an optimal thickness of the photoactive film in bulk heterojunctions, based on kinetic considerations alone, and that this optimal thickness is very sensitive to the choice of energy parameters. The results also indicate space-charge limiting effects for interpenetrating donor-acceptor networks with characteristic domain sizes in the nanometer range and high driving force for the photoinduced electron transfer across the donor-acceptor internal interface.
NASA Astrophysics Data System (ADS)
Beck, Hylke; de Roo, Ad; van Dijk, Albert; McVicar, Tim; Miralles, Diego; Schellekens, Jaap; Bruijnzeel, Sampurno; de Jeu, Richard
2015-04-01
Motivated by the lack of large-scale model parameter regionalization studies, a large set of 3328 small catchments (< 10000 km2) around the globe was used to set up and evaluate five model parameterization schemes at global scale. The HBV-light model was chosen because of its parsimony and flexibility to test the schemes. The catchments were calibrated against observed streamflow (Q) using an objective function incorporating both behavioral and goodness-of-fit measures, after which the catchment set was split into subsets of 1215 donor and 2113 evaluation catchments based on the calibration performance. The donor catchments were subsequently used to derive parameter sets that were transferred to similar grid cells based on a similarity measure incorporating climatic and physiographic characteristics, thereby producing parameter maps with global coverage. Overall, there was a lack of suitable donor catchments for mountainous and tropical environments. The schemes with spatially-uniform parameter sets (EXP2 and EXP3) achieved the worst Q estimation performance in the evaluation catchments, emphasizing the importance of parameter regionalization. The direct transfer of calibrated parameter sets from donor catchments to similar grid cells (scheme EXP1) performed best, although there was still a large performance gap between EXP1 and HBV-light calibrated against observed Q. The schemes with parameter sets obtained by simultaneously calibrating clusters of similar donor catchments (NC10 and NC58) performed worse than EXP1. The relatively poor Q estimation performance achieved by two (uncalibrated) macro-scale hydrological models suggests there is considerable merit in regionalizing the parameters of such models. The global HBV-light parameter maps and ancillary data are freely available via http://water.jrc.ec.europa.eu.
DuBay, Derek A; Ivankova, Nataliya; Herby, Ivan; Schoenberger, Yu-Mei; Redden, David T; Holt, Cheryl; Siminoff, Laura; Fouad, Mona; Martin, Michelle Y
2017-01-01
African Americans (AA) are a third as likely as Caucasians to become registered organ donors at the Department of Motorized Vehicles (DMV). The Department of Health and Human Services has set the goal that at least 50% of adults in each state are registered donors. The purpose of this study was to explore the personal, behavioral and environmental factors associated with AA donor registration decision-making at the DMV. Guided by the Social Cognitive Theory, 13 focus groups (n = 100 participants) were conducted with AAs within 3 months of visiting a DMV and making a decision regarding whether to become or to not become a registered donor. The data were analyzed using inductive thematic and qualitative content analyses. Study participants expressed a desire to learn more information while waiting in line at the DMV. Knowing a family member or friend in need of an organ transplant, and the desire to make one's own decision were two salient factors associated with the decision to become a registered organ donor. Several aspects of the DMV environment (e.g., noisy, overcrowded, lacking privacy) were cited as deterrents to becoming a registered donor. This study highlights the personal, behavioral and environmental factors associated with AA organ donor registration decision-making at the DMV. The DMV is a setting where many adults make a decision about organ donation. Policies that create an environment in the DMV to support informed decision-making (e.g., privacy, informed clerks, available educational materials, etc.) are indicated. Copyright © 2017 National Medical Association. Published by Elsevier Inc. All rights reserved.
46 CFR 390.12 - Liquidated damages.
Code of Federal Regulations, 2013 CFR
2013-10-01
... requires that the party repay the time value of the deferral of Federal Income Tax which the party has... trading restrictions, add (A) the sum of qualified withdrawals for the vessel which have been made from... subject to 5-yr trading restriction = 1.469328 (value of $1 compounded at 8 pct for 20, 10, and 5 yr...
46 CFR 390.12 - Liquidated damages.
Code of Federal Regulations, 2012 CFR
2012-10-01
... requires that the party repay the time value of the deferral of Federal Income Tax which the party has... trading restrictions, add (A) the sum of qualified withdrawals for the vessel which have been made from... subject to 5-yr trading restriction = 1.469328 (value of $1 compounded at 8 pct for 20, 10, and 5 yr...
46 CFR 390.12 - Liquidated damages.
Code of Federal Regulations, 2010 CFR
2010-10-01
... requires that the party repay the time value of the deferral of Federal Income Tax which the party has... trading restrictions, add (A) the sum of qualified withdrawals for the vessel which have been made from... subject to 5-yr trading restriction = 1.469328 (value of $1 compounded at 8 pct for 20, 10, and 5 yr...
46 CFR 390.12 - Liquidated damages.
Code of Federal Regulations, 2014 CFR
2014-10-01
... requires that the party repay the time value of the deferral of Federal Income Tax which the party has... trading restrictions, add (A) the sum of qualified withdrawals for the vessel which have been made from... subject to 5-yr trading restriction = 1.469328 (value of $1 compounded at 8 pct for 20, 10, and 5 yr...
26 CFR 1.402A-1 - Designated Roth Accounts.
Code of Federal Regulations, 2010 CFR
2010-04-01
... gross income as an amount allocable to investment in the contract is determined under section 72(e)(8... portion not includible in gross income as an amount allocable to investment in the contract is determined... preceding, however, a contribution that is returned as an excess deferral or excess contribution does not...
26 CFR 1.409A-2 - Deferral elections.
Code of Federal Regulations, 2010 CFR
2010-04-01
... not include an election as to the medium of payment (for example, an election between a payment of... provision providing for a differing treatment of such compensation may not be effective for 12 months from... (a)(13), a plan that was adopted and effective before December 31, 2007, whether written or unwritten...
Out of Weakness: The "Educational Good" in Late Antiquity
ERIC Educational Resources Information Center
Allen, Ansgar
2016-01-01
This paper explores the nature of the educational good as it appears in late antiquity, arguing that the "good" variously promised by education is in a state of perpetual deferral. This extends the tradition of ancient Greek philosophy where wisdom is to be forever approached but never realised. Three exemplary cases are considered: the…
19 CFR 181.45 - Goods eligible for full drawback.
Code of Federal Regulations, 2010 CFR
2010-04-01
...-Deferral Programs § 181.45 Goods eligible for full drawback. (a) Goods originating in Canada or Mexico. A... originating good is: (1) Subsequently exported to Canada or Mexico; (2) Used as a material in the production of another good that is subsequently exported to Canada or Mexico; or (3) Substituted by a good of...
19 CFR 181.45 - Goods eligible for full drawback.
Code of Federal Regulations, 2011 CFR
2011-04-01
...-Deferral Programs § 181.45 Goods eligible for full drawback. (a) Goods originating in Canada or Mexico. A... originating good is: (1) Subsequently exported to Canada or Mexico; (2) Used as a material in the production of another good that is subsequently exported to Canada or Mexico; or (3) Substituted by a good of...
Facing the Issue of Facilities Maintenance in California Public Higher Education.
ERIC Educational Resources Information Center
California State Postsecondary Education Commission, Sacramento.
The decision to defer facilities maintenance obligations in California higher education and the extent to which maintenance has been deferred are discussed. Attention is also directed to the educational and fiscal context in which this decision has been made nationally. The policies and procedures governing facilities maintenance and deferral in…
75 FR 28619 - Meeting of the Advisory Committee on Blood Safety and Availability
Federal Register 2010, 2011, 2012, 2013, 2014
2010-05-21
... began prior to the availability of tests for HIV in early 1985. The deferral has existed in its current form since September 1985. This and other related FDA policies are designed to address the major... screened using highly sensitive tests, screening tests can be falsely negative during the ``window period...
26 CFR 1.409A-2 - Deferral elections.
Code of Federal Regulations, 2014 CFR
2014-04-01
... during successive service periods each of which comprises less than 12 months (for example, a teacher... recipients with respect to the time and form of payment to beneficiaries. An election to change the identity... election changes the identity of the recipient of the payment, if the time and form of the payment is not...
26 CFR 1.409A-2 - Deferral elections.
Code of Federal Regulations, 2012 CFR
2012-04-01
... during successive service periods each of which comprises less than 12 months (for example, a teacher... recipients with respect to the time and form of payment to beneficiaries. An election to change the identity... election changes the identity of the recipient of the payment, if the time and form of the payment is not...
26 CFR 1.409A-2 - Deferral elections.
Code of Federal Regulations, 2011 CFR
2011-04-01
... during successive service periods each of which comprises less than 12 months (for example, a teacher... recipients with respect to the time and form of payment to beneficiaries. An election to change the identity... election changes the identity of the recipient of the payment, if the time and form of the payment is not...
26 CFR 1.409A-2 - Deferral elections.
Code of Federal Regulations, 2013 CFR
2013-04-01
... during successive service periods each of which comprises less than 12 months (for example, a teacher... recipients with respect to the time and form of payment to beneficiaries. An election to change the identity... election changes the identity of the recipient of the payment, if the time and form of the payment is not...
Code of Federal Regulations, 2014 CFR
2014-04-01
...; consolidation of cases; denial of intervention; review of action by Regional Director. 1422.6 Section 1422.6... intervention; review of action by Regional Director. (a) If the Regional Director determines, after such... petition is not otherwise actionable, or an intervention is not appropriate, the Regional Director may...
Code of Federal Regulations, 2010 CFR
2010-04-01
...; consolidation of cases; denial of intervention; review of action by Regional Director. 1422.6 Section 1422.6... intervention; review of action by Regional Director. (a) If the Regional Director determines, after such... petition is not otherwise actionable, or an intervention is not appropriate, the Regional Director may...
Code of Federal Regulations, 2013 CFR
2013-04-01
...; consolidation of cases; denial of intervention; review of action by Regional Director. 1422.6 Section 1422.6... intervention; review of action by Regional Director. (a) If the Regional Director determines, after such... petition is not otherwise actionable, or an intervention is not appropriate, the Regional Director may...
Code of Federal Regulations, 2012 CFR
2012-04-01
...; consolidation of cases; denial of intervention; review of action by Regional Director. 1422.6 Section 1422.6... intervention; review of action by Regional Director. (a) If the Regional Director determines, after such... petition is not otherwise actionable, or an intervention is not appropriate, the Regional Director may...
Code of Federal Regulations, 2011 CFR
2011-04-01
...; consolidation of cases; denial of intervention; review of action by Regional Director. 1422.6 Section 1422.6... intervention; review of action by Regional Director. (a) If the Regional Director determines, after such... petition is not otherwise actionable, or an intervention is not appropriate, the Regional Director may...
29 CFR 2520.104-50 - Short plan years, deferral of accountant's examination and report.
Code of Federal Regulations, 2010 CFR
2010-07-01
...) Financial statements and accompanying schedules prepared in conformity with the requirements of section 103... respect to the financial statements and accompanying schedules for both of the two plan years. (2) The annual report for the second of the two consecutive plan years shall include: (i) Financial statements...
Code of Federal Regulations, 2010 CFR
2010-04-01
..., Provision for deferred income taxes-Credit, other income and deductions. 367.4112 Section 367.4112... deferred taxes and deferrals of taxes, credit, that relate to other income and deductions. ... Accounts Service Company Operating Income § 367.4112 Account 411.2, Provision for deferred income taxes...
DOE Office of Scientific and Technical Information (OSTI.GOV)
Eyer, James M.; Schoenung, Susan M.
2008-02-01
The work documented in this report represents another step in the ongoing investigation of innovative and potentially attractive value propositions for electricity storage by the United States Department of Energy (DOE) and Sandia National Laboratories (SNL) Energy Storage Systems (ESS) Program. This study uses updated cost and performance information for modular energy storage (MES) developed for this study to evaluate four prospective value propositions for MES. The four potentially attractive value propositions are defined by a combination of well-known benefits that are associated with electricity generation, delivery, and use. The value propositions evaluated are: (1) transportable MES for electric utilitymore » transmission and distribution (T&D) equipment upgrade deferral and for improving local power quality, each in alternating years, (2) improving local power quality only, in all years, (3) electric utility T&D deferral in year 1, followed by electricity price arbitrage in following years; plus a generation capacity credit in all years, and (4) electric utility end-user cost management during times when peak and critical peak pricing prevail.« less
Reevaluating Canada's policy for blood donations from men who have sex with men (MSM).
Jubran, Bellal; Billick, Maxime; Devlin, Gabriel; Cygler, Jeremy; Lebouché, Bertrand
2016-12-01
During the HIV/AIDS epidemic of the 1980s, most of the developed world instituted a permanent ban on blood donations from men who have sex with men (MSM). In recent years, public health agencies across Europe and North America are reconsidering and rescinding these restrictions. We examine the Canadian climate, where MSM may donate blood only after a 5-year deferral period. We review circumstances of the initial ban on MSM blood donations and recent social, legal, and economic changes that have encouraged Canadian public health officials to consider policy reform. We also review international evidence about the impact of reforming MSM blood donations. Given improvements in HIV screening technology, results from mathematical modeling studies, and empirical data from Italy, the UK, and Australia, we conclude that changing Canada's MSM blood donation policy from a 5- to a 1-year deferral would not increase the number of transfusion-transmitted HIV infections. We provide empirical support to the recently elected Liberal Canadian government's political promise to decrease restrictions on MSM blood donations.
Nitric Oxide Donor-Based Cancer Therapy: Advances and Prospects.
Huang, Zhangjian; Fu, Junjie; Zhang, Yihua
2017-09-28
The increasing understanding of the role of nitric oxide (NO) in cancer biology has generated significant progress in the use of NO donor-based therapy to fight cancer. These advances strongly suggest the potential adoption of NO donor-based therapy in clinical practice, and this has been supported by several clinical studies in the past decade. In this review, we first highlight several types of important NO donors, including recently developed NO donors bearing a dinitroazetidine skeleton, represented by RRx-001, with potential utility in cancer therapy. Special emphasis is then given to the combination of NO donor(s) with other therapies to achieve synergy and to the hybridization of NO donor(s) with an anticancer drug/agent/fragment to enhance the activity or specificity or to reduce toxicity. In addition, we briefly describe inducible NO synthase gene therapy and nanotechnology, which have recently entered the field of NO donor therapy.
Masser, Barbara M; White, Katherine M; Hamilton, Kyra; McKimmie, Blake M
2011-03-01
Data from prior health scares suggest that an avian influenza outbreak will impact on people's intention to donate blood; however, research exploring this is scarce. Using an augmented theory of planned behavior (TPB), incorporating threat perceptions alongside the rational decision-making components of the TPB, the current study sought to identify predictors of blood donors' intentions to donate during two phases of an avian influenza outbreak. Blood donors (n = 172) completed an on-line survey assessing the standard TPB predictors as well as measures of threat perceptions from the health belief model (i.e., perceived susceptibility and severity). Path analyses examined the utility of the augmented TPB to predict donors' intentions to donate during a low- and high-risk phase of an avian influenza outbreak. In both phases, the model provided a good fit to the data explaining 69% (low risk) and 72% (high risk) of the variance in intentions. Attitude, subjective norm, and perceived susceptibility significantly predicted donor intentions in both phases. Within the low-risk phase, sex was an additional significant predictor of intention, while in the high-risk phase, perceived behavioral control was significantly related to intentions. An augmented TPB model can be used to predict donors' intentions to donate blood in a low-risk and a high-risk phase of an outbreak of avian influenza. As such, the results provide important insights into donors' decision-making that can be used by blood agencies to maintain the blood supply in the context of an avian influenza outbreak. © 2010 American Association of Blood Banks.
The welfare effects of integrating renewable energy into electricity markets
NASA Astrophysics Data System (ADS)
Lamadrid, Alberto J.
The challenges of deploying more renewable energy sources on an electric grid are caused largely by their inherent variability. In this context, energy storage can help make the electric delivery system more reliable by mitigating this variability. This thesis analyzes a series of models for procuring electricity and ancillary services for both individuals and social planners with high penetrations of stochastic wind energy. The results obtained for an individual decision maker using stochastic optimization are ambiguous, with closed form solutions dependent on technological parameters, and no consideration of the system reliability. The social planner models correctly reflect the effect of system reliability, and in the case of a Stochastic, Security Constrained Optimal Power Flow (S-SC-OPF or SuperOPF), determine reserve capacity endogenously so that system reliability is maintained. A single-period SuperOPF shows that including ramping costs in the objective function leads to more wind spilling and increased capacity requirements for reliability. However, this model does not reflect the inter temporal tradeoffs of using Energy Storage Systems (ESS) to improve reliability and mitigate wind variability. The results with the multiperiod SuperOPF determine the optimum use of storage for a typical day, and compare the effects of collocating ESS at wind sites with the same amount of storage (deferrable demand) located at demand centers. The collocated ESS has slightly lower operating costs and spills less wind generation compared to deferrable demand, but the total amount of conventional generating capacity needed for system adequacy is higher. In terms of the total system costs, that include the capital cost of conventional generating capacity, the costs with deferrable demand is substantially lower because the daily demand profile is flattened and less conventional generation capacity is then needed for reliability purposes. The analysis also demonstrates that the optimum daily pattern of dispatch and reserves is seriously distorted if the stochastic characteristics of wind generation are ignored.
Sawe, Hendry R; Mfinanga, Juma A; Ringo, Faith H; Mwafongo, Victor; Reynolds, Teri A; Runyon, Michael S
2016-01-01
Objectives To describe the HIV counselling and testing practices for children presenting to an emergency department (ED) in a low-income country. Setting The ED of a large east African national referral hospital. Participants This retrospective review of all paediatric (<18 years old) ED visits in 2012 enrolled patients who had an HIV test ordered and excluded those without testing. Files were available for 5540/5774 (96%) eligible patients and 1632 (30%) were tested for HIV, median age 1.3 years (IQR 9 months to 4 years), 58% <18 months old and 61% male. Primary and secondary outcome measures The primary outcome measure was documentation of pretest and post-test counselling, or deferral of counselling, for children tested for HIV in the ED. Secondary measures included the overall rate of HIV testing, rate of counselling documented in the inpatient record when deferred in the ED, rate of counselling documented when testing was initiated by the inpatient service, rate of counselling documented by test result (positive vs negative) and the rate of referral to follow-up HIV care among patients testing positive. Results Of 418 patients tested in the ED, counselling, or deferral of counselling, was documented for 70 (17%). When deferred to the ward, subsequent counselling was documented for 15/42 (36%). Counselling was documented in 33% of patients testing positive versus 1.1% patients testing negative (OR 43 (95% CI 23 to 83). Of 199 patients who tested positive and survived to hospital discharge, 76 (38%) were referred for follow-up at the HIV clinic on discharge. Conclusions Physicians documented the provision, or deferral, of counselling for <20% of children tested for HIV in the ED. Counselling was much more likely to be documented when the test result was positive. Less than 40% of those testing positive were referred for follow-up care. PMID:26880672
Organ donation video messaging: differential appeal, emotional valence, and behavioral intention.
Rodrigue, J R; Fleishman, A; Vishnevsky, T; Fitzpatrick, S; Boger, M
2014-10-01
Video narratives increasingly are used to draw the public's attention to the need for more registered organ donors. We assessed the differential impact of donation messaging videos on appeal, emotional valence, and organ donation intentions in 781 non-registered adults. Participants watched six videos (four personal narratives, one informational video without personal narrative, and one unrelated to donation) with or without sound (subtitled), randomly sequenced to minimize order effects. We assessed appeal, emotional valence, readiness to register as organ donors, and donation information-seeking behavior. Compared to other video types, one featuring a pediatric transplant recipient (with or without sound) showed more favorable appeal (p < 0.001), generated more positive emotional valence (p < 0.01), and had the most favorable impact on organ donor willingness (p < 0.001). Ninety-five (12%) participants clicked through to a donation website after viewing all six videos. Minority race (OR = 1.94, 95% CI = 1.20, 3.13, p = 0.006), positive change in organ donor readiness (OR = 0.26, 95% CI = 0.14, 0.48, p < 0.001), and total positive emotion (OR = 1.05, 95% CI = 1.03, 1.07, p < 0.001) were significant multivariable predictors of clicking through to the donation website. Brief, one-min videos can have a very dramatic and positive impact on willingness to consider donation and behavioral intentions to register as an organ donor. © 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.
An Energy Storage Assessment: Using Optimal Control Strategies to Capture Multiple Services
DOE Office of Scientific and Technical Information (OSTI.GOV)
Wu, Di; Jin, Chunlian; Balducci, Patrick J.
2015-09-01
This paper presents a methodology for evaluating benefits of battery storage for multiple grid applications, including energy arbitrage, balancing service, capacity value, distribution system equipment deferral, and outage mitigation. In the proposed method, at each hour, a look-ahead optimization is first formulated and solved to determine battery base operating point. The minute by minute simulation is then performed to simulate the actual battery operation. This methodology is used to assess energy storage alternatives in Puget Sound Energy System. Different battery storage candidates are simulated for a period of one year to assess different value streams and overall benefits, as partmore » of a financial feasibility evaluation of battery storage projects.« less
Spin-orbit coupling induced two-electron relaxation in silicon donor pairs
NASA Astrophysics Data System (ADS)
Song, Yang; Das Sarma, S.
2017-09-01
We unravel theoretically a key intrinsic relaxation mechanism among the low-lying singlet and triplet donor-pair states in silicon, an important element in the fast-developing field of spintronics and quantum computation. Despite the perceived weak spin-orbit coupling (SOC) in Si, we find that our discovered relaxation mechanism, combined with the electron-phonon and interdonor interactions, drives the transitions in the two-electron states over a large range of donor coupling regimes. The scaling of the relaxation rate with interdonor exchange interaction J goes from J5 to J4 at the low to high temperature limits. Our analytical study draws on the symmetry analysis over combined band, donor envelope, and valley configurations. It uncovers naturally the dependence on the donor-alignment direction and triplet spin orientation, and especially on the dominant SOC source from donor impurities. While a magnetic field is not necessary for this relaxation, unlike in the single-donor spin relaxation, we discuss the crossover behavior with increasing Zeeman energy in order to facilitate comparison with experiments.
Electrical parameter changes in silicon solar cells induced by thermal donor formation
NASA Astrophysics Data System (ADS)
Ruiz, J. M.; Cid, M.
Statistical results of 450 C annealing experiments of variable duration, performed on n(+)pp(+), 10-ohm-cm Czochralski silicon (Cz silicon), bifacial solar cells are presented. The specific temperature used is known to favor the nucleation of interstitial oxygen, creating the thermal donors, with important effects on the electrical properties of Cz silicon. Two distinct behaviors are observed with solar cells. The annealing during moderate time (below 4-5 h) leads, on the average, to an improvement of the photovoltaic performances. Longer heat treatments (mainly above 8 h) induce an effective inversion of the base polarity (from p type to n type), with the net result of partially losing the precedent benefits. Both phenomena have been found to be permanent, provided further processes at higher temperatures are avoided.
Insect compassion, evidence of altruism, reciprocity, and midwifery behavior in aphids
USDA-ARS?s Scientific Manuscript database
Altruism is characterized by an act provided by a donor to a recipient that is considered detrimental to the donor yet benefits the recipient. Evidence of altruism is abundant in nature. In insects, altruism is manifest by ant and bee colonies where sterile workers provide labor, care of young, co...
Waterman, Amy D.; Robbins, Mark L.; Peipert, John D.
2016-01-01
A promising strategy for increasing living donor kidney transplant (LDKT) rates is improving education about living donation for both prospective kidney transplant recipients and living donors to help overcome the proven knowledge, psychological, and socioeconomic barriers to LDKT. A recent Consensus Conference on Best Practices in Live Kidney Donation recommended that comprehensive LDKT education be made available to patients at all stages of chronic kidney disease (CKD). However, in considering how to implement this recommendation across different healthcare learning environments, the current lack of available guidance regarding how to design, deliver, and measure the efficacy of LDKT education programs is notable. In the current article, we provide an overview of how one behavior change theory, the Transtheoretical Model of Behavior Change, can guide the delivery of LDKT education for patients at various stages of CKD and readiness for LDKT. We also discuss the importance of creating educational programs for both potential kidney transplant recipients and living donors, and identify key priorities for educational research to reduce racial disparities in LDKT and increase LDKT rates. PMID:27347475
Oosterhout, Stefan D.; Savikhin, Victoria; Zhang, Junxiang; ...
2017-02-22
Here, we report a novel method to determine the amount of pure, aggregated phase of donor and acceptor in organic photovoltaic (OPV) bulk heterojunctions. By determination of the diffraction intensity per unit volume for both donor and acceptor, the volume content of pure, aggregated donor and acceptor in the blend can be determined. We find that for the small molecule X2:[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) system, in contrast to most polymer systems, all the PCBM is aggregated, indicating there is negligible miscibility of PCBM with X2. This provides an explanation why the performance of OPV devices of X2:PCBM are highmore » over a large range of PCBM concentrations. This is in contrast to many other OPV blends, where PCBM forms a mixed phase with the donor and does not provide sufficient transport for electrons when the PCBM concentration is low. This study demonstrates that a mixed phase is not necessarily a requirement for good OPV device performance.« less
Globalisation and blood safety.
Farrugia, Albert
2009-05-01
Globalisation may be viewed as the growing interdependence of countries worldwide through the increasing volume and variety of cross-border transactions in goods and services, and also through the more rapid and widespread diffusion of technology. Globalisation is not just an economic phenomenon, although it is frequently described as such, but includes commerce, disease and travel, and immigration, and as such it affects blood safety and supply in various ways. The relatively short travel times offered by modern aviation can result in the rapid spread of blood-borne pathogens before measures to counteract transmission can be put in place; this would have happened with SARS if the basic life cycle of the SARS virus included an asymptomatic viraemia. This risk can be amplified by ecological factors which effect the spread of these pathogens once they are transferred to a naïve ecosystem, as happened with West Nile Virus (WNV) in North America. The rationalization and contraction of the plasma products industry may be viewed as one aspect of globalisation imposed by the remorseless inevitability of the market; the effect of this development on the safety and supply of products has yet to be seen, but the oversight and assurance of a shrinking number of players will present particular challenges. Similarly, the monopolization of technology, through patent enforcement which puts access beyond the reach of developing countries, can have an effect on blood safety. The challenges presented to blood safety by globalisation are heightening the tensions between the traditional focus on the product safety - zero risk paradigm and the need to view the delivery of safe blood as an integrated process. As an illustration of this tension, donor deferral measures imposed by globalisation-induced risks such as vCJD and WNV have resulted in the loss of the safest and most committed portion of the blood donor population in many Western countries, leading to an increased risk to safety and supply. It is only through an appreciation of the basic needs of transfusion medicine, including the enunciation of appropriate principles to manage, rather than eliminate, risks, that the challenges imposed by globalisation may be overcome.
Clowes, Rebekah; Masser, Barbara M
2012-07-01
While research has established the role of anticipated emotions in augmented Theory of Planned Behavior (TPB) models of donor behavior, research has yet to consider the impact of immediate emotions that may be triggered by the blood donor context on respondents' intentions to donate blood. This study explored the impact of blood donor paraphernalia on respondents' positivity toward blood donation and on the interrelationships typically observed in TPB blood donation studies. Seventy-six participants were randomly allocated to complete TPB questionnaires assessing attitudes, subjective norm, and self-efficacy along with intention to donate blood in either an affectively "hot" (blood donation paraphernalia) or a cold (control) condition. Anxiety about donating blood was also assessed. Respondents in the affectively hot condition reported significantly greater anxiety about donating blood along with less positive attitudes, weaker subjective norms, lower self-efficacy, and lower intention to donate than respondents in the cold control condition. In support of extant TPB research, correlational analyses indicated that the relationships between attitudes, self-efficacy, and intention were not impacted upon by condition. Blood donation paraphernalia induces anxiety in donors and results in diminished positivity toward donating. An awareness of what donors experience as a function of the context of blood donation may allow blood services to effectively intervene to bolster donors' positivity toward blood donation at the point where donation can take place. © 2011 American Association of Blood Banks.
A motivational interview promotes retention of blood donors with high internal motivation.
France, Christopher R; France, Janis L; Carlson, Bruce W; Himawan, Lina K; Kessler, Debra A; Rebosa, Mark; Shaz, Beth H; Madden, Katrala; Carey, Patricia M; Slepian, P Maxwell; Ankawi, Brett; Livitz, Irina E; Fox, Kristen R
2017-10-01
Based on the hypothesis that self-determined motivation is associated with an increased likelihood of future behavior, the present study examined the ability of a motivational interview to promote internal motivation for giving blood and future donation attempts. A sample of 484 recent whole-blood and double red blood cell donors (62.4% female; age = 30.2 ± 11.8 years) were randomly assigned to either a telephone-delivered motivational interview or a control call approximately 6 weeks after donating. Several weeks before the call and again 1 week after the call, participants completed the Blood Donor Identity Survey, a multidimensional measure of donor motivation, to derive indices of amotivation, external motivation, and internal motivation to give blood. Repeat donation attempts were tracked using blood center records. Relative to controls, participants in the motivational interview group showed a shift toward more self-determined motivation, as indicated by significant decreases in amotivation (p = 0.01) and significant increases in external (p = 0.009) and internal (p = 0.002) motivation. Furthermore, those with initially high levels of autonomous motivation were more likely to make a donation attempt in the subsequent year if they completed the motivational interview (71.1%) versus the control call (55.1%). Motivational interviewing is a potentially useful strategy to enhance retention of existing blood donors, particularly among those who express a greater sense of internal motivation for giving. © 2017 AABB.
Passing, Protesting, and the Arts of Resistance: Infiltrating the Ritual Space of Blood Donation
ERIC Educational Resources Information Center
Bennett, Jeffrey A.
2008-01-01
This essay critically engages challenges made against the federally mandated deferral policies which prohibit "men who have sex with other men" from donating blood. I argue that "passing" and "protest" are dialogically dependent on one another as two separate but related tactics of resistance. Drawing on interview materials from men who have both…
Code of Federal Regulations, 2010 CFR
2010-01-01
... first lien on a residential mobile home if a creditor covered by this part complies with the consumer... the final scheduled installment. (g) Deferral fees. (1) With respect to mobile home credit... money order; do not send cash. [54 FR 49715, Nov. 30, 1989, as amended at 61 FR 50984, Sept. 30, 1996...
Code of Federal Regulations, 2013 CFR
2013-01-01
... first lien on a residential mobile home if a creditor covered by this part complies with the consumer... the final scheduled installment. (g) Deferral fees. (1) With respect to mobile home credit... money order; do not send cash. [54 FR 49715, Nov. 30, 1989, as amended at 61 FR 50984, Sept. 30, 1996...
Code of Federal Regulations, 2012 CFR
2012-01-01
... first lien on a residential mobile home if a creditor covered by this part complies with the consumer... the final scheduled installment. (g) Deferral fees. (1) With respect to mobile home credit... money order; do not send cash. [54 FR 49715, Nov. 30, 1989, as amended at 61 FR 50984, Sept. 30, 1996...
Code of Federal Regulations, 2011 CFR
2011-01-01
... first lien on a residential mobile home if a creditor covered by this part complies with the consumer... the final scheduled installment. (g) Deferral fees. (1) With respect to mobile home credit... money order; do not send cash. [54 FR 49715, Nov. 30, 1989, as amended at 61 FR 50984, Sept. 30, 1996...
Code of Federal Regulations, 2014 CFR
2014-01-01
... first lien on a residential mobile home if a creditor covered by this part complies with the consumer... the final scheduled installment. (g) Deferral fees. (1) With respect to mobile home credit... money order; do not send cash. [54 FR 49715, Nov. 30, 1989, as amended at 61 FR 50984, Sept. 30, 1996...
Federal Register 2010, 2011, 2012, 2013, 2014
2012-04-18
... other than fossil fuels and mineral sources of carbon. Examples of ``biogenic CO 2 emissions'' include... biomass can be part of the national strategy to reduce dependence on fossil fuels. Efforts are underway at.... In that event, Virginia may revise its SIP accordingly. For stationary sources co-firing fossil fuel...
27 CFR 25.175 - Prepayment of tax.
Code of Federal Regulations, 2010 CFR
2010-04-01
... OF THE TREASURY LIQUORS BEER Tax on Beer Prepayment of Tax § 25.175 Prepayment of tax. (a) General..., is insufficient for deferral of payment of tax on beer to be removed for consumption or sale, or if a... tax before any beer is removed for consumption or sale, or taken out of the brewery for removal for...
27 CFR 25.175 - Prepayment of tax.
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2013-04-01
... OF THE TREASURY ALCOHOL BEER Tax on Beer Prepayment of Tax § 25.175 Prepayment of tax. (a) General..., is insufficient for deferral of payment of tax on beer to be removed for consumption or sale, or if a... tax before any beer is removed for consumption or sale, or taken out of the brewery for removal for...
27 CFR 25.175 - Prepayment of tax.
Code of Federal Regulations, 2014 CFR
2014-04-01
... OF THE TREASURY ALCOHOL BEER Tax on Beer Prepayment of Tax § 25.175 Prepayment of tax. (a) General..., is insufficient for deferral of payment of tax on beer to be removed for consumption or sale, or if a... tax before any beer is removed for consumption or sale, or taken out of the brewery for removal for...
27 CFR 25.175 - Prepayment of tax.
Code of Federal Regulations, 2012 CFR
2012-04-01
... OF THE TREASURY LIQUORS BEER Tax on Beer Prepayment of Tax § 25.175 Prepayment of tax. (a) General..., is insufficient for deferral of payment of tax on beer to be removed for consumption or sale, or if a... tax before any beer is removed for consumption or sale, or taken out of the brewery for removal for...
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2011-07-01
... Department of Education (Continued) OFFICE OF SPECIAL EDUCATION AND REHABILITATIVE SERVICES, DEPARTMENT OF EDUCATION SERVICE OBLIGATIONS UNDER SPECIAL EDUCATION-PERSONNEL DEVELOPMENT TO IMPROVE SERVICES AND RESULTS... institution of higher education; (2) Is serving on active duty as a member of the armed services of the United...
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2011-07-20
... FEDERAL ACCOUNTING STANDARDS ADVISORY BOARD Notice of Release of the Exposure Draft of Technical... Accounting Standards Advisory Board. ACTION: Notice. Board Action: Pursuant to 31 U.S.C. 3511(d), the Federal... October, 2010, notice is hereby given that the Federal Accounting Standards Advisory Board (FASAB) has...
26 CFR 1.402(g)-1 - Limitation on exclusion for elective deferrals.
Code of Federal Regulations, 2010 CFR
2010-04-01
.... 1.402(g)-1 Section 1.402(g)-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) INCOME TAX (CONTINUED) INCOME TAXES Pension, Profit-Sharing, Stock Bonus Plans, Etc. § 1.402(g)-1... section 402(a)(8) (before applying the limits of section 402(g) or this section). (2) Any employer...
19 CFR 181.53 - Collection and waiver or reduction of duty under duty-deferral programs.
Code of Federal Regulations, 2010 CFR
2010-04-01
... Canada or Mexico. Example. Company N imports tea into the United States and makes a Class 6 warehouse entry. Company N manufactures sweetened ice tea mix by combining the imported tea with refined cane sugar and other flavorings and packaging it in retail size canisters. Upon withdrawal of the ice tea mix...
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Code of Federal Regulations, 2011 CFR
2011-10-01
..., superintendent, or other responsible official may request that the Secretary defer all or a portion of the rebate... the Company Action Level RBC. (d) When the Secretary determines that the payment of rebates by an... deferral of all or a portion of the rebates owed, but only for a period determined by the Secretary in...
45 CFR 158.270 - Effect of rebate payments on solvency.
Code of Federal Regulations, 2012 CFR
2012-10-01
..., superintendent, or other responsible official may request that the Secretary defer all or a portion of the rebate... the Company Action Level RBC. (d) When the Secretary determines that the payment of rebates by an... deferral of all or a portion of the rebates owed, but only for a period determined by the Secretary in...
45 CFR 158.270 - Effect of rebate payments on solvency.
Code of Federal Regulations, 2013 CFR
2013-10-01
..., superintendent, or other responsible official may request that the Secretary defer all or a portion of the rebate... the Company Action Level RBC. (d) When the Secretary determines that the payment of rebates by an... deferral of all or a portion of the rebates owed, but only for a period determined by the Secretary in...
45 CFR 158.270 - Effect of rebate payments on solvency.
Code of Federal Regulations, 2014 CFR
2014-10-01
..., superintendent, or other responsible official may request that the Secretary defer all or a portion of the rebate... the Company Action Level RBC. (d) When the Secretary determines that the payment of rebates by an... deferral of all or a portion of the rebates owed, but only for a period determined by the Secretary in...
The Challenges of the Ontario Secondary School Literacy Test for Second Language Students
ERIC Educational Resources Information Center
Cheng, Liying; Klinger, Don A.; Zheng, Ying
2007-01-01
Results from the Ontario Secondary School Literacy Test (OSSLT) indicate that English as a Second Language (ESL) and English Literacy Development (ELD) students have comparatively low success and high deferral rates. This study examined the 2002 and 2003 OSSLT test performances of ESL/ELD and non-ESL/ELD students in order to identify and…
Federal Register 2010, 2011, 2012, 2013, 2014
2013-12-27
...The Postal Service gives notice that it is deferring the previously-announced compliance date of January 26, 2014, for mailers to use full-service Intelligent Mail[supreg] to qualify for automation prices when mailing First-Class Mail[supreg], Standard Mail[supreg]; Periodicals[supreg], and Bound Printed Matter[supreg] mailpieces.
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2013-04-09
... (NAAQS) and the deferral of, until July 21, 2014, PSD applicability to biogenic carbon dioxide (CO 2... regarding NSR permitting. EPA is also responding to comments received on the January 14, 2012, proposed... SILs or SMC portions of that rule. Further, EPA's January 14, 2013, proposed rule did not include a...
Code of Federal Regulations, 2010 CFR
2010-04-01
... plans that permit in-service distributions. (f) Special rule for life insurance contracts. (g) Special...) contracts. (a) Exclusion for section 403(b) contracts. (b) Application of requirements. (c) Special rules...) Section 403(b) elective deferrals. (d) Employer contributions for former employees. (e) Special rules for...
37 CFR 1.103 - Suspension of action by the Office.
Code of Federal Regulations, 2010 CFR
2010-07-01
... Code. A request for deferral of examination under this paragraph must include the publication fee set... include: (1) A showing of good and sufficient cause for suspension of action; and (2) The fee set forth in... the period of suspension, and include the processing fee set forth in § 1.17(i). (c) Limited...
27 CFR 25.175 - Prepayment of tax.
Code of Federal Regulations, 2011 CFR
2011-04-01
... OF THE TREASURY LIQUORS BEER Tax on Beer Prepayment of Tax § 25.175 Prepayment of tax. (a) General..., is insufficient for deferral of payment of tax on beer to be removed for consumption or sale, or if a... tax before any beer is removed for consumption or sale, or taken out of the brewery for removal for...
Code of Federal Regulations, 2013 CFR
2013-04-01
... 26 Internal Revenue 5 2013-04-01 2013-04-01 false ADP test. 1.401(k)-2 Section 1.401(k)-2 Internal... TAXES (CONTINUED) Pension, Profit-Sharing, Stock Bonus Plans, Etc. § 1.401(k)-2 ADP test. (a) Actual deferral percentage (ADP) test—(1) In general—(i) ADP test formula. A cash or deferred arrangement...
Code of Federal Regulations, 2010 CFR
2010-04-01
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Code of Federal Regulations, 2014 CFR
2014-04-01
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2010-04-01
... prior-stage cumulative indirect taxes. 351.518 Section 351.518 Customs Duties INTERNATIONAL TRADE... indirect taxes. (a) Benefit—(1) Exemption of prior-stage cumulative indirect taxes. In the case of a... production of an exported product, a benefit exists to the extent that the exemption extends to inputs that...
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2010-08-24
... Parts Thereof from the People's Republic of China; Extension of Time Limit for Preliminary Results of... review of the antidumping duty order on hand trucks and certain parts thereof from the People's Republic... Antidumping and Countervailing Duty Administrative Reviews and Request for Revocation in Part, and Deferral of...
Developing a theory of change for a community-based response to illegal wildlife trade.
Biggs, Duan; Cooney, Rosie; Roe, Dilys; Dublin, Holly T; Allan, James R; Challender, Dan W S; Skinner, Diane
2017-02-01
The escalating illegal wildlife trade (IWT) is one of the most high-profile conservation challenges today. The crisis has attracted over US$350 million in donor and government funding in recent years, primarily directed at increased enforcement. There is growing recognition among practitioners and policy makers of the need to engage rural communities that neighbor or live with wildlife as key partners in tackling IWT. However, a framework to guide such community engagement is lacking. We developed a theory of change (ToC) to guide policy makers, donors, and practitioners in partnering with communities to combat IWT. We identified 4 pathways for community-level actions: strengthen disincentives for illegal behavior, increase incentives for wildlife stewardship, decrease costs of living with wildlife, and support livelihoods that are not related to wildlife. To succeed the pathways, all require strengthening of enabling conditions, including capacity building, and of governance. Our ToC serves to guide actions to tackle IWT and to inform the evaluation of policies. Moreover, it can be used to foster dialogue among IWT stakeholders, from local communities to governments and international donors, to develop a more effective, holistic, and sustainable community-based response to the IWT crisis. © 2016 The Authors. Conservation Biology published by Wiley Periodicals, Inc. on behalf of Society for Conservation Biology.
Donor-transmitted, donor-derived, and de novo cancer after liver transplant.
Chapman, Jeremy R; Lynch, Stephen V
2014-03-01
Cancer is the third most common cause of death (after cardiovascular disease and infection) for patients who have a functioning kidney allograft. Kidney and liver transplant recipients have similar cancer risks because of immunosuppression but different risks because of differences in primary diseases that cause renal and hepatic failure and the inherent behavior of cancers in the liver. There are 4 types of cancer that may develop in liver allograft recipients: (1) recurrent cancer, (2) donor-transmitted cancer, (3) donor-derived cancer, and (4) de novo cancer. Identification of potential donor cancer transmission may occur at postmortem examination of a deceased donor or when a probable donor-transmitted cancer is identified in another recipient. Donor-transmitted cancer after liver transplant is rare in Australia, the United Kingdom, and the United States. Aging of the donor pool may increase the risk of subclinical cancer in donors. Liver transplant recipients have a greater risk of de novo cancer than the general population, and risk factors for de novo cancer in liver transplant recipients include primary sclerosing cholangitis, alcoholic liver disease, smoking, and increased age. Liver transplant recipients may benefit from cancer screening because they have a high risk, are clearly identifiable, and are under continuous medical supervision.
Boulware, L Ebony; Hill-Briggs, Felicia; Kraus, Edward S; Melancon, J Keith; Falcone, Brenda; Ephraim, Patti L; Jaar, Bernard G; Gimenez, Luis; Choi, Michael; Senga, Mikiko; Kolotos, Maria; Lewis-Boyer, LaPricia; Cook, Courtney; Light, Laney; DePasquale, Nicole; Noletto, Todd; Powe, Neil R
2013-03-01
Many patients with chronic kidney disease (CKD) have difficulty becoming actively engaged in the pursuit of preemptive living donor kidney transplantation. The Talking About Live Kidney Donation (TALK) Study was a randomized controlled trial of the effectiveness of educational and social worker interventions designed to encourage early discussions and active pursuit of preemptive living donor kidney transplantation in patients with progressive CKD. We recruited participants with progressive CKD from academically affiliated nephrology practices in Baltimore, MD. Participants randomly received: (1) usual care (routine care with their nephrologists), the (2) TALK education intervention (video and booklet), or the (3) TALK social worker intervention (video and booklet plus patient and family social worker visits). We followed participants for 6 months to assess their self-reported achievement of behaviors reflecting their discussions about and/or pursuit of living donor kidney transplantation (discussions with family, discussions with physicians, initiating recipient evaluation, completing recipient evaluation, and identifying a potential living donor). We assessed outcomes through a questionnaire at 1-, 3-, and 6-months follow-up. Participants receiving usual care with their nephrologists (n = 44), TALK education (n = 43), and the TALK social worker (n = 43) were similar at baseline. TALK Study interventions improved participants' living donor kidney transplantation discussion and pursuit behaviors, with the social worker leading to greater patient activation (participants' predicted probability of achieving living donor kidney transplantation discussions, evaluations, or donor identification over 6 months): probabilities were 30% (95% CI, 20%-46%), 42% (95% CI, 33%-54%), and 58% (95% CI, 41%-83%), respectively, in the usual care, TALK education, and TALK social worker groups (P = 0.03). Our population was well educated and mostly insured, potentially limiting generalizability of our findings. TALK interventions improved discussion and active pursuit of living donor kidney transplantation in patients with progressive CKD and may improve their use of preemptive living donor kidney transplantation. Copyright © 2013 National Kidney Foundation, Inc. Published by Elsevier Inc. All rights reserved.
Zuck, T F; Cumming, P D; Wallace, E L
2001-12-01
The safety of blood for transfusion depends, in part, on the reliability of the health history given by volunteer blood donors. To improve reliability, a pilot study evaluated the use of an interactive computer-based audiovisual donor interviewing system at a typical midwestern blood center in the United States. An interactive video screening system was tested in a community donor center environment on 395 volunteer blood donors. Of the donors using the system, 277 completed surveys regarding their acceptance of and opinions about the system. The study showed that an interactive computer-based audiovisual donor screening system was an effective means of conducting the donor health history. The majority of donors found the system understandable and favored the system over a face-to-face interview. Further, most donors indicated that they would be more likely to return if they were to be screened by such a system. Interactive computer-based audiovisual blood donor screening is useful and well accepted by donors; it may prevent a majority of errors and accidents that are reportable to the FDA; and it may contribute to increased safety and availability of the blood supply.
DSM for transmission and distribution deferral in Queensland, Australia
DOE Office of Scientific and Technical Information (OSTI.GOV)
Gishkariany, G.; Hoch, L.; King, M.
1995-12-01
The South East Queensland Electricity Board (SEQEB) is a distributor of electricity serving the greater Brisbane area. The service area is characterized by relatively high growth, which is creating pressure on the adequacy of transmission and distribution capacity in the area. The utility has embarked on two initial efforts to assess the ability of DSM to provide cost-effective deferral of these capital projects. In both cases, the timing of the need for new transmission and/or distribution capacity has made it imperative that the DSM programs selected for implementation be capable of penetrating the market and achieving results quickly. SEQEB`s Southmore » Gold Coast area is characterized by an affluent customer base with an increasing concern for the environment. In 1990, SEQEB undertook a Value Management Study, and produced an integrated supply-and demand-side plan for the area for the next ten years. The plan that was developed identified the potential for saving Australian $7 million (NPV) over five years through targeted DSM initiatives. To achieve these savings it was also determined that the DSM programs would have to reduce area peak demand by at least 2 MW per year for a period of ten years altogether. Three programs were implemented in the 1991-1992 program year, and achieved the targeted level of peak demand reduction. Results for the first half of the 1992-1993 program also look encouraging. In the utility`s Beaudesert Branch, the customer base is more rural, with significant numbers of farms, although one area is characterized by significant new suburban residential development. In this study, (which began in the second half of 1992), the planning methodology has been refined along the lines of that used in Pacific Gas and Electric`s Delta Project. Because the Beaudesert area contains only approximately 10,000 customers, it has proven important to undertake a significant amount of customer and end-use research in order to understand.« less
DOE Office of Scientific and Technical Information (OSTI.GOV)
Sontakke, Atul D., E-mail: sontakke.atul.55a@st.kyoto-u.ac.jp; Katayama, Yumiko; Tanabe, Setsuhisa
2015-03-30
A facile method to describe the electron transfer and energy transfer processes among lanthanide ions is presented based on the temperature dependent donor luminescence decay kinetics. The electron transfer process in Ce{sup 3+}-Yb{sup 3+} exhibits a steady rise with temperature, whereas the Ce{sup 3+}-Tb{sup 3+} energy transfer remains nearly unaffected. This feature has been investigated using the rate equation modeling and a methodology for the quantitative estimation of interaction parameters is presented. Moreover, the overall consequences of electron transfer and energy transfer process on donor-acceptor luminescence behavior, quantum efficiency, and donor luminescence decay kinetics are discussed in borate glass host.more » The results in this study propose a straight forward approach to distinguish the electron transfer and energy transfer processes between lanthanide ions in dielectric hosts, which is highly advantageous in view of the recent developments on lanthanide doped materials for spectral conversion, persistent luminescence, and related applications.« less
Human immunodeficiency virus test-seeking blood donors in a large blood bank in São Paulo, Brazil.
Goncalez, Thelma; Sabino, Ester; Sales, Nanci; Chen, Yea-Hung; Chamone, Dalton; Busch, Michael; Murphy, Edward; Custer, Brian; McFarland, Willi
2010-08-01
Persons with human immunodeficiency virus (HIV) risk behaviors are excluded from donation to reduce the risk of transfusion-transmitted infection. Persons donating to be tested for HIV may therefore deny risk behaviors. A random sample of donors completed a survey on motivations, knowledge, and attitudes on the screening process. Donors were considered test seekers if they agreed with two statements "I think that blood donation is a good, fast, and anonymous way to get my blood tested" and "I donate to get my test results." This study was conducted from June to November 2006 at the largest blood bank in São Paulo, Brazil. Of 3061 participants, 208 (7%) were test seekers. They tended to be male and had a lower educational level. They were more likely to have incorrect knowledge about blood safety (e.g., not knowing that a unit can test antibody negative and still transmit infection, 50% vs. 42%, p = 0.02), express dissatisfaction with screening questions (e.g., feeling that important questions were not asked, 14% vs. 5%, p < 0.01), and concur that donors do not answer questions truthfully (e.g., donors have more sexual partners than they admit, 29% vs. 18%, p < 0.01). Test seekers were more likely to believe that it is acceptable to donate blood to get tested for HIV (41% vs. 10%, p < 0.01). Test-seeking motivation, coupled with low knowledge of window period risk, is counter to improving blood safety and to donor prevention needs. Donor education needs to be improved along with availability of appropriate HIV counseling and testing. © 2010 American Association of Blood Banks.
Investigation of new semiinsulating behavior of III-V compounds
NASA Technical Reports Server (NTRS)
Lagowski, Jacek
1990-01-01
The investigation of defect interactions and properties related to semiinsulating behavior of III-V semiconductors resulted in about twenty original publications, six doctoral thesis, one masters thesis and numerous conference presentations. The studies of new compensation mechanisms involving transition metal impurities have defined direct effects associated with deep donor/acceptor levels acting as compensating centers. Electrical and optical properties of vanadium and titanium levels were determined in GaAs, InP and also in ternary compounds InGaAs. The experimental data provided basis for the verification of chemical trends and the VRBE method. They also defined compositional range for III-V mixed crystals whereby semiinsulating behavior can be achieved using transition elements deep levels and a suitable codoping with shallow donor/acceptor impurities.
Organ donation: a significant marketing challenge.
Clarke, Roberta N
2007-01-01
Unlike most health care markets, the organ donation market is one where patients are the marketers, prospective donors are the customers, and no payment is allowed in the exchange process. The assumption that altruistic behavior by donors would satisfy the need for organs has proven woefully untrue. As a result, those needing organs have resorted to relying on unwilling or impoverished donors, to having to promote themselves on websites which have achieved success for only small numbers of patients, or to waiting for organs which they may never receive. This remains a still unsolved marketing challenge.
A behavior model for blood donors and marketing strategies to retain and attract them
Aldamiz-echevarria, Covadonga; Aguirre-Garcia, Maria Soledad
2014-01-01
Objective analyze and propose a theoretical model that describes blood donor decisions to help staff working in blood banks (nurses and others) in their efforts to capture and retain donors. Methods analysis of several studies on the motivations to give blood in Spain over the last six years, as well as past literature on the topic, the authors' experiences in the last 25 years in over 15 Non Governmental Organizations with different levels of responsibilities, their experiences as blood donors and the informal interviews developed during those 25 years. Results a model is proposed with different internal and external factors that influence blood donation, as well as the different stages of the decision-making process. Conclusion the knowledge of the donation process permits the development of marketing strategies that help to increase donors and donations. PMID:25029059
A behavior model for blood donors and marketing strategies to retain and attract them.
Aldamiz-Echevarria, Covadonga; Aguirre-Garcia, Maria Soledad
2014-01-01
analyze and propose a theoretical model that describes blood donor decisions to help staff working in blood banks (nurses and others) in their efforts to capture and retain donors. analysis of several studies on the motivations to give blood in Spain over the last six years, as well as past literature on the topic, the authors' experiences in the last 25 years in over 15 Non Governmental Organizations with different levels of responsibilities, their experiences as blood donors and the informal interviews developed during those 25 years. a model is proposed with different internal and external factors that influence blood donation, as well as the different stages of the decision-making process. the knowledge of the donation process permits the development of marketing strategies that help to increase donors and donations.
Sheth, Heena; Moreland, Larry; Peterson, Hilary; Aggarwal, Rohit
2017-01-01
To improve herpes zoster (HZ) vaccination rates in high-risk patients with rheumatoid arthritis (RA) being treated with immunosuppressive therapy. This quality improvement project was based on the pre- and post-intervention design. The project targeted all patients with RA over the age of 60 years while being treated with immunosuppressive therapy (not with biologics) seen in 13 rheumatology outpatient clinics. The study period was from July 2012 to June 2013 for the pre-intervention and February 2014 to January 2015 for the post-intervention phase. The electronic best practice alert (BPA) for HZ vaccination was developed; it appeared on electronic medical records during registration and medication reconciliation of the eligible patient by the medical assistant. The BPA was designed to electronically identify patient eligibility and to enable the physician to order the vaccine or to document refusal or deferral reason. Education regarding vaccine guidelines, BPA, vaccination process, and feedback were crucial components of the project interventions. The vaccination rates were compared using the chi-square test. We evaluated 1823 and 1554 eligible patients with RA during the pre-intervention and post-intervention phases, respectively. The HZ vaccination rates, reported as patients vaccinated among all eligible patients, improved significantly from the pre-intervention period of 10.1% (184/1823) to 51.7% (804/1554) during the intervention phase (p < 0.0001). The documentation rates (vaccine received, vaccine ordered, patient refusal, and deferral reasons) increased from 28% (510/1823) to 72.9% (1133/1554; p < 0.0001). The HZ infection rates decreased significantly from 2% to 0.3% (p = 0.002). Electronic identification of vaccine eligibility and BPA significantly improved HZ vaccination rates. The process required minimal modification of clinic work flow and did not burden the physician's time, and has the potential for self-sustainability and generalizability.
Blood Donor Test-Seeking Motivation and Prior HIV Testing Experiences in São Paulo, Brazil.
Truong, Hong-Ha M; Blatyta, Paula F; Santos, Fernanda M; Montebello, Sandra; Esposti, Sandra P D; Hangai, Fatima N; Salles, Nanci Alves; Mendrone, Alfredo; Sabino, Ester C; McFarland, Willi; Gonçalez, Thelma T
2015-09-01
HIV test-seeking behavior among blood donors has been observed worldwide and may pose a threat to the safety of the blood supply. We evaluated current test-seeking motivations and prior alternative HIV testing experiences among blood donors in São Paulo, Brazil. All candidate or potential blood donors were consecutively approached and recruited to participate in the study upon presentation at Fundação Pró-Sangue Hemocentro, the largest blood bank in Brazil. Participants were recruited between August 2012 and May 2013 after they were screened for donor eligibility. Questionnaires were administered through audio computer-assisted self-interview. Among 11,867 donors, 38 % previously tested for HIV apart from blood donation, of whom 47.7 % tested at public facilities and 2.7 % acknowledged getting tested for HIV as the primary reason for donating. Dissatisfaction with prior alternative testing experience was reported by 2.5 % of donors. Current test-seeking motivation was associated with dissatisfaction with prior alternative testing experience and testing at a public alternative facility. The most common reasons for dissatisfaction were too long of a wait to get tested and for results, counseling was too long, lack of privacy, and low confidence in the equipment and accuracy of the test. Lack of awareness about the availability of free and confidential public HIV testing services as well as dissatisfaction with past HIV testing and counseling experiences motivate some individuals to test at blood banks. Test-seeking behavior among blood donors may be best addressed by improving alternative testing programs, particularly with respect to time delays, privacy and perceptions about test accuracy. Educational campaigns on safe blood donation and HIV testing for diagnosis, risk counseling and referral to care are also needed for the general public and for health care providers.
McKee, Sarah E; Grissom, Nicola M; Herdt, Christopher T; Reyes, Teresa M
2017-06-01
During gestation, fetal nutrition is entirely dependent on maternal diet. Maternal consumption of excess fat during pregnancy has been linked to an increased risk of neurologic disorders in offspring, including attention deficit/hyperactivity disorder, autism, and schizophrenia. In a mouse model, high-fat diet (HFD)-fed offspring have cognitive and executive function deficits as well as whole-genome DNA and promoter-specific hypomethylation in multiple brain regions. Dietary methyl donor supplementation during pregnancy or adulthood has been used to alter DNA methylation and behavior. Given that extensive brain development occurs during early postnatal life-particularly within the prefrontal cortex (PFC), a brain region critical for executive function-we examined whether early life methyl donor supplementation ( e.g., during adolescence) could ameliorate executive function deficits observed in offspring that were exposed to maternal HFD. By using operant testing, progressive ratio, and the PFC-dependent 5-choice serial reaction timed task (5-CSRTT), we determined that F1 female offspring (B6D2F1/J) from HFD-fed dams have decreased motivation (decreased progressive ratio breakpoint) and require a longer stimulus length to complete the 5-CSRTT task successfully, whereas early life methyl donor supplementation increased motivation and shortened the minimum stimulus length required for a correct response in the 5-CSRTT. Of interest, we found that expression of 2 chemokines, CCL2 and CXCL10, correlated with the median stimulus length in the 5-CSRTT. Furthermore, we found that acute adult supplementation of methyl donors increased motivation in HFD-fed offspring and those who previously received supplementation with methyl donors. These data point to early life as a sensitive time during which dietary methyl donor supplementation can alter PFC-dependent cognitive behaviors.-McKee, S. E., Grissom, N. M., Herdt, C. T., Reyes, T. M. Methyl donor supplementation alters cognitive performance and motivation in female offspring from high-fat diet-fed dams. © FASEB.
McKee, Sarah E.; Grissom, Nicola M.; Herdt, Christopher T.; Reyes, Teresa M.
2017-01-01
During gestation, fetal nutrition is entirely dependent on maternal diet. Maternal consumption of excess fat during pregnancy has been linked to an increased risk of neurologic disorders in offspring, including attention deficit/hyperactivity disorder, autism, and schizophrenia. In a mouse model, high-fat diet (HFD)–fed offspring have cognitive and executive function deficits as well as whole-genome DNA and promoter-specific hypomethylation in multiple brain regions. Dietary methyl donor supplementation during pregnancy or adulthood has been used to alter DNA methylation and behavior. Given that extensive brain development occurs during early postnatal life—particularly within the prefrontal cortex (PFC), a brain region critical for executive function—we examined whether early life methyl donor supplementation (e.g., during adolescence) could ameliorate executive function deficits observed in offspring that were exposed to maternal HFD. By using operant testing, progressive ratio, and the PFC-dependent 5-choice serial reaction timed task (5-CSRTT), we determined that F1 female offspring (B6D2F1/J) from HFD-fed dams have decreased motivation (decreased progressive ratio breakpoint) and require a longer stimulus length to complete the 5-CSRTT task successfully, whereas early life methyl donor supplementation increased motivation and shortened the minimum stimulus length required for a correct response in the 5-CSRTT. Of interest, we found that expression of 2 chemokines, CCL2 and CXCL10, correlated with the median stimulus length in the 5-CSRTT. Furthermore, we found that acute adult supplementation of methyl donors increased motivation in HFD-fed offspring and those who previously received supplementation with methyl donors. These data point to early life as a sensitive time during which dietary methyl donor supplementation can alter PFC-dependent cognitive behaviors.—McKee, S. E., Grissom, N. M., Herdt, C. T., Reyes, T. M. Methyl donor supplementation alters cognitive performance and motivation in female offspring from high-fat diet–fed dams. PMID:28209774
Retention of "safe" blood donors. The Retrovirus Epidemiology Donor Study.
Thomson, R A; Bethel, J; Lo, A Y; Ownby, H E; Nass, C C; Williams, A E
1998-04-01
There are obvious advantages to increasing donor retention. However, for reasons of blood safety, certain donors may, in fact, be more desirable to retain than others. "Safe" donors are defined as those who provided a blood donation that was negative on all laboratory screening tests and who subsequently reported no behavioral risks in response to an anonymous survey. This study identifies the most important factors affecting the intention of "safe" donors to provide another donation. An anonymous survey asking about donation history, sexual history, injecting drug use, and recent donation experience was mailed to 50,162 randomly selected allogeneic donors (including directed donors) who gave blood from April through July or from October through December 1993 at one of the five United States blood centers participating in the Retrovirus Epidemiology Donor Study. Before mailing, questionnaires were coded to designate donors with nonreactive laboratory screening tests at their most recent donation. A total of 34,726 donors (69%) responded, with substantially higher response among repeat donors. According to reported intentions only, the vast majority of "safe" donors indicated a high likelihood of donating again within the next 12 months. Only 3.4 percent reported a low likelihood of donating again. A comparison of those likely to return and those unlikely to return reveals significant differences in demographics and in ratings of the donation experience. A higher proportion of those unlikely to return were first-time donors, minority-group donors, and donors with less education. The highest projected loss among "safe" donors was seen for those who gave a fair to poor assessment of their treatment by blood center staff or of their physical well-being during or after donating. These data suggest that efforts to improve donors' perceptions of their donation experience, as well as attention to the physical effects of blood donation, may aid in the retention of both repeat and first-time donors.
Moore, D R; Feurer, I D; Zavala, E Y; Shaffer, D; Karp, S; Hoy, H; Moore, D E
2013-02-01
Most centers utilize phone or written surveys to screen candidates who self-refer to be living kidney donors. To increase efficiency and reduce resource utilization, we developed a web-based application to screen kidney donor candidates. The aim of this study was to evaluate the use of this web-based application. Method and time of referral were tabulated and descriptive statistics summarized demographic characteristics. Time series analyses evaluated use over time. Between January 1, 2011 and March 31, 2012, 1200 candidates self-referred to be living kidney donors at our center. Eight hundred one candidates (67%) completed the web-based survey and 399 (33%) completed a phone survey. Thirty-nine percent of donors accessed the application on nights and weekends. Postimplementation of the web-based application, there was a statistically significant increase (p < 0.001) in the number of self-referrals via the web-based application as opposed to telephone contact. Also, there was a significant increase (p = 0.025) in the total number of self-referrals post-implementation from 61 to 116 per month. An interactive web-based application is an effective strategy for the initial screening of donor candidates. The web-based application increased the ability to interface with donors, process them efficiently and ultimately increased donor self-referral at our center. © Copyright 2012 The American Society of Transplantation and the American Society of Transplant Surgeons.
Selecting the best haploidentical donor.
McCurdy, Shannon R; Fuchs, Ephraim J
2016-10-01
The substantial evidence of the safety of human leukocyte antigen (HLA)-haploidentical (haplo) blood or marrow transplantation (BMT) has led to its increasing utilization. When prioritizing HLA-matched grafts, patients frequently have few or no donors from whom to choose. However, a given patient may have multiple suitable haplo donors. Therefore factors other than HLA-match become critical for selecting the best donor. We recommend a donor selection algorithm based on the donor-specific antibodies, ABO match, donor age, donor sex, and cytomegalovirus (CMV) serostatus match. Despite provocative initial evidence, further studies are warranted to determine whether there is any benefit to selecting a haplo donor based on the number of HLA-mismatches, natural killer cell alloreactivity, or the presence of non-inherited maternal HLA antigens. Copyright © 2016 Elsevier Inc. All rights reserved.
Behavioral economics. Avoiding overhead aversion in charity.
Gneezy, Uri; Keenan, Elizabeth A; Gneezy, Ayelet
2014-10-31
Donors tend to avoid charities that dedicate a high percentage of expenses to administrative and fundraising costs, limiting the ability of nonprofits to be effective. We propose a solution to this problem: Use donations from major philanthropists to cover overhead expenses and offer potential donors an overhead-free donation opportunity. A laboratory experiment testing this solution confirms that donations decrease when overhead increases, but only when donors pay for overhead themselves. In a field experiment with 40,000 potential donors, we compared the overhead-free solution with other common uses of initial donations. Consistent with prior research, informing donors that seed money has already been raised increases donations, as does a $1:$1 matching campaign. Our main result, however, clearly shows that informing potential donors that overhead costs are covered by an initial donation significantly increases the donation rate by 80% (or 94%) and total donations by 75% (or 89%) compared with the seed (or matching) approach. Copyright © 2014, American Association for the Advancement of Science.
ERIC Educational Resources Information Center
Leonard, Wilbert Marcellus, II
The document describes a field study to investigate the relationship between altruism and blood donating behavior among members of a large midwestern college community. Altruistic behavior is interpreted as combining three motivations: (1) reward-cost, also referred to in terms of behavior as social exchange; (2) social responsibility and…
26 CFR 1.403(b)-4 - Contribution limitations.
Code of Federal Regulations, 2010 CFR
2010-04-01
... described in section 415(c)(3)(E). Any age 50 catch-up contributions under paragraph (c)(2) of this section...) elective deferrals made on his or her behalf. (2) Age 50 catch-up—(i) In general. In accordance with... contributions for a participant who is age 50 by the end of the year, provided that such age 50 catch-up...
29 CFR 1420.9 - FMCS deferral to parties' own private interest arbitration procedures.
Code of Federal Regulations, 2011 CFR
2011-07-01
... regulations are a part of the Service's overall approach to implementing the health care amendments of 1974 in... to be flexible and to tailor its approach so as to accommodate the needs of the parties in the..., both unions and management, to take advantage of these and other options and to work with the Service...
29 CFR 1420.9 - FMCS deferral to parties' own private interest arbitration procedures.
Code of Federal Regulations, 2010 CFR
2010-07-01
... regulations are a part of the Service's overall approach to implementing the health care amendments of 1974 in... to be flexible and to tailor its approach so as to accommodate the needs of the parties in the..., both unions and management, to take advantage of these and other options and to work with the Service...
19 CFR 181.53 - Collection and waiver or reduction of duty under duty-deferral programs.
Code of Federal Regulations, 2012 CFR
2012-04-01
... required filing date. The person required to file shall file Customs Form 7501 no later than 10 working days after the date of exportation to Canada or Mexico or 10 working days after being entered into a... sugar and other flavorings and packaging it in retail size canisters. Upon withdrawal of the ice tea mix...
19 CFR 181.53 - Collection and waiver or reduction of duty under duty-deferral programs.
Code of Federal Regulations, 2014 CFR
2014-04-01
... required filing date. The person required to file shall file Customs Form 7501 no later than 10 working days after the date of exportation to Canada or Mexico or 10 working days after being entered into a... sugar and other flavorings and packaging it in retail size canisters. Upon withdrawal of the ice tea mix...
19 CFR 181.53 - Collection and waiver or reduction of duty under duty-deferral programs.
Code of Federal Regulations, 2013 CFR
2013-04-01
... required filing date. The person required to file shall file Customs Form 7501 no later than 10 working days after the date of exportation to Canada or Mexico or 10 working days after being entered into a... sugar and other flavorings and packaging it in retail size canisters. Upon withdrawal of the ice tea mix...
19 CFR 181.53 - Collection and waiver or reduction of duty under duty-deferral programs.
Code of Federal Regulations, 2011 CFR
2011-04-01
... required filing date. The person required to file shall file Customs Form 7501 no later than 10 working days after the date of exportation to Canada or Mexico or 10 working days after being entered into a... sugar and other flavorings and packaging it in retail size canisters. Upon withdrawal of the ice tea mix...
Patterson, Jerry
2016-01-01
Most employers understand the frustration of seeing their employees pass up retirement savings opportunities. This article reviews the problem of insufficient retirement savings and describes simple plan design features that can make it easier for employees to do what's best for their financial futures. The author provides a case example showing what impact such changes can have on participation, deferral rates and account balances.
NASA Astrophysics Data System (ADS)
Caicedo, Mauricio; Echeverry, Carlos A.; Guimarães, Robson R.; Ortiz, Alejandro; Araki, Koiti; Insuasty, Braulio
2017-04-01
In this work, we present the synthesis of novel donor-acceptor compounds based on 3-methylquinoxaline-2(1H)one which follow an easy synthetic route, involving Knoevenagel reaction with electron-donor groups such as N,N-dimethylaminobenzene, ferrocene, triphenylamine (TPA) and ((E)-4,4'-(ethene-1,2-diyl) bis (N,N-diphenylaniline). Additionally, the optical properties were measured by means of the absorption and emission spectroscopy suggesting a push-pull behavior which was further confirmed by electrochemical experiments. Finally, the quinoxaline-2(1H)one fragment not only bestow wide absorption, but also can chelate to titanium ions on the TiO2 surface, allowing a strong electron coupling between the excited-state energy level of the dyes and the conduction band of TiO2.
DOE Office of Scientific and Technical Information (OSTI.GOV)
Sarkar, Abhra; Ali, Maroof; Baker, Gary A
2009-01-01
In this work, an array of molecular-level solvent featuressincluding solute-solvent/solvent-solvent interactions, dipolarity, heterogeneity, dynamics, probe accessibility, and diffusionswere investigated across the entire composition of ambient mixtures containing the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate, [bmim][BF4], and pH 7.0 phosphate buffer, based on results assembled for nine different molecular probes utilized in a range of spectroscopic modes. These studies uncovered interesting and unusual solvatochromic probe behavior within this benchmark mixture. Solvatochromic absorbance probessa watersoluble betaine dye (betaine dye 33), N,N-diethyl-4-nitroaniline, and 4-nitroanilineswere employed to determine ET (a blend of dipolarity/polarizability and hydrogen bond donor contributions) and the Kamlet-Taft indices * (dipolarity/polarizability), R (hydrogenmore » bond donor acidity), and (hydrogen bond acceptor basicity) characterizing the [bmim][BF4] + phosphate buffer system. These parameters each showed a marked deviation from ideality, suggesting selective solvation of the individual probe solutes by [bmim][BF4]. Similar conclusions were derived from the responses of the fluorescent polarity-sensitive probes pyrene and pyrene-1-carboxaldehyde. Importantly, the fluorescent microfluidity probe 1,3-bis(1-pyrenyl)propane senses a microviscosity within the mixture that significantly exceeds expectations derived from simple interpolation of the behavior in the neat solvents. On the basis of results from this probe, a correlation between microviscosity and bulk viscosity was established; pronounced solvent-solvent hydrogen-bonding interactions were implicit in this behavior. The greatest deviation from ideal additive behavior for the probes studied herein was consistently observed to occur in the buffer-rich regime. Nitromethane-based fluorescence quenching of pyrene within the [bmim][BF4] + phosphate buffer system showed unusual compliance with a sphere-of-action quenching model, a further manifestation of the microheterogeneity of the system. Fluorescence correlation spectroscopic results for both small (BODIPY FL) and macromolecular (Texas Red-10 kDa dextran conjugate) diffusional probes provide additional evidence in support of microphase segregation inherent to aqueous [bmim][BF4].« less
Labots, M; Laarakker, M C; Ohl, F; van Lith, H A
2016-06-29
Selecting chromosome substitution strains (CSSs, also called consomic strains/lines) used in the search for quantitative trait loci (QTLs) consistently requires the identification of the respective phenotypic trait of interest and is simply based on a significant difference between a consomic and host strain. However, statistical significance as represented by P values does not necessarily predicate practical importance. We therefore propose a method that pays attention to both the statistical significance and the actual size of the observed effect. The present paper extends on this approach and describes in more detail the use of effect size measures (Cohen's d, partial eta squared - η p (2) ) together with the P value as statistical selection parameters for the chromosomal assignment of QTLs influencing anxiety-related behavior and locomotion in laboratory mice. The effect size measures were based on integrated behavioral z-scoring and were calculated in three experiments: (A) a complete consomic male mouse panel with A/J as the donor strain and C57BL/6J as the host strain. This panel, including host and donor strains, was analyzed in the modified Hole Board (mHB). The consomic line with chromosome 19 from A/J (CSS-19A) was selected since it showed increased anxiety-related behavior, but similar locomotion compared to its host. (B) Following experiment A, female CSS-19A mice were compared with their C57BL/6J counterparts; however no significant differences and effect sizes close to zero were found. (C) A different consomic mouse strain (CSS-19PWD), with chromosome 19 from PWD/PhJ transferred on the genetic background of C57BL/6J, was compared with its host strain. Here, in contrast with CSS-19A, there was a decreased overall anxiety in CSS-19PWD compared to C57BL/6J males, but not locomotion. This new method shows an improved way to identify CSSs for QTL analysis for anxiety-related behavior using a combination of statistical significance testing and effect sizes. In addition, an intercross between CSS-19A and CSS-19PWD may be of interest for future studies on the genetic background of anxiety-related behavior.
The presence of isolated hydrogen donors in heavily carbon-doped GaAs
NASA Astrophysics Data System (ADS)
Fushimi, Hiroshi; Wada, Kazumi
1994-12-01
The deactivation mechanism of carbon acceptors in GaAs has systematically been studied by measuring the annealing behavior and depth profiles of the carrier concentration. It is found that hydrogen impurities dominate carbon deactivation. Their deactivation undergoes two different ways: Hydrogen donors isolated from carbon acceptors compensate carbon and hydrogen impurities neutralize the carbon by forming neutral carbon-hydrogen complexes. The compensating hydrogen donors diffuse out extremely fast at relatively low temperatures. This is, to the best of our knowledge, the first report on the presence of isolated hydrogen donors in heavily carbon-doped GaAs. The dissociation of carbon-hydrogen complexes is much slower than reported. The mechanism is discussed in terms of a hydrogen retrapping effect by carbon.
France, Christopher R; France, Janis L; Wissel, Mary Ellen; Ditto, Blaine; Dickert, Tara; Himawan, Lina K
2013-09-01
Efforts to expand the donor pool by recruiting younger donors have resulted in higher numbers of initial donations, but retention of young donors continues to be challenging. Path analysis was used to examine the simultaneous relationships among syncopal reactions, donation anxiety, needle pain, donor satisfaction, and donation intention in predicting repeat donation. Participants included 421 first- and second-time donors recruited for a study comparing the effects of predonation water loading with and without the use of applied muscle tension during donation (52% female, 60.8% first-time donor, mean age 20.3 years). For this longitudinal follow-up study, donor database records were accessed 2 years after the index donation to assess repeat donation. Results of a series of path analyses demonstrated the influential role of donor anxiety in shaping donor retention (final model χ(2) = 35.75, root mean square error of approximation 0.03, comparative fit index 0.98, weighted root mean square residual 0.74). First, anxiety exerted a direct negative influence on donation intention, the proximal and sole direct predictor of repeat donation. Second, anxiety increased the likelihood of donor-reported needle pain, adversely affecting donation satisfaction and, subsequently, donation intention. Finally, anxiety was associated with donor ratings of syncopal reactions through its impact on needle pain, which also contributed to decreased donation intention. These results provide novel evidence that donation anxiety plays a central role in shaping future donation behavior. Individual differences in anxiety must be considered when developing and testing strategies to enhance blood donor retention. © 2013 American Association of Blood Banks.
Marlow, Nicole M; Simpson, Kit N; Kazley, Abby S; Balliet, Wendy E; Chavin, Kenneth D; Baliga, Prabhakar K
2016-07-01
Using a cross-sectional design, we examined coping stages (Kübler-Ross) among patients with end-stage renal disease at nephrology practices incorporating professional social workers as patient navigators, providing person-centered education and support (N = 420). We evaluated associations with behavioral counseling constructs (assess-advise-agree-assist-arrange). Coping stages comprised denial = 35.24 percent, acceptance = 24.05 percent, depression = 21.43 percent, bargaining = 12.86 percent, and anger = 6.43 percent. Compared to denial, other coping stages showed increased odds ratios for transplant referral agreement, transplant referral evaluations, understanding treatments, understanding donation procedures, plans to recruit donors, active donor recruitment, and potential living donor(s). Assessment of coping stages, and strategies to influence these, may be key factors in guiding patients to living donor kidney transplantation. © The Author(s) 2014.
Crawshaw, Marilyn; Gunter, Christine; Tidy, Christine; Atherton, Freda
2013-03-01
This article describes recent practice experiences with donor conceived adults, donors, non-donor-conceived adult children of donors using the voluntary DNA-based register, UK DonorLink. It highlights additional complexities faced when using DNA rather than paper records for searching, in particular from the risk of false positives, low chances of success and potential inclusion of biological parents' DNA. Professionals' experiences in supporting those being "linked" suggest challenges as well as rewards. Registration carries the potential to be therapeutic for donor-conceived adults and donors and to enhance their political awareness regardless of links being made. Registrants value both peer and professional support, providing the latter can respond flexibly and be delivered by staff experienced in intermediary work. Given that the majority of those affected by donor conception internationally come from anonymous donation systems, these findings are highly pertinent and argue the need for political and moral debate about such service provision.
Kimani, D; Mwangi, J; Mwangi, M; Bunnell, R; Kellogg, T A; Oluoch, T; Gichangi, A; Kaiser, R; Mugo, N; Odongo, T; Oduor, M; Marum, L
2011-02-01
Blood safety and sufficiency are major challenges in Kenya and other sub-Saharan African countries forcing many countries to rely on family replacement donors (FRD). We analysed data from a national AIDS indicator survey to describe blood donors in Kenya and potential risks of transfusion transmissible infections (TTI) comparing voluntary donors and FRD. A population-based, cross-sectional survey was conducted in 2007 among 15- to 64-year-olds. Consenting participants were interviewed about blood donation history and were tested for HIV, HSV-2 and syphilis. Of the 17,940 people surveyed, 445 (2·3%) reported donating blood in the prior 12 months. Sixty-four per cent were voluntary donors, and the rest were FRD. Compared to FRD, the majority of voluntary donors were <25 years old (59% versus 18%), from the highest wealth quintile (57% versus 42%) and single (64% versus 23%). In addition, voluntary donors were less likely to have been sexually active than replacement donors (43% versus 13%). HIV prevalence was lower among voluntary donors than among FRD (2·6% versus 7·4%, P-value=0·07). The majority of blood donors in Kenya are voluntary with lower potential risk of TTI. © 2010 The Author(s). Vox Sanguinis © 2010 International Society of Blood Transfusion.
21 CFR 1271.50 - How do I determine whether a donor is eligible?
Code of Federal Regulations, 2010 CFR
2010-04-01
... HUMAN CELLS, TISSUES, AND CELLULAR AND TISSUE-BASED PRODUCTS Donor Eligibility § 1271.50 How do I... document the eligibility of a cell or tissue donor. (b) Eligible donor. A donor is eligible under these...
21 CFR 1271.50 - How do I determine whether a donor is eligible?
Code of Federal Regulations, 2014 CFR
2014-04-01
... HUMAN CELLS, TISSUES, AND CELLULAR AND TISSUE-BASED PRODUCTS Donor Eligibility § 1271.50 How do I... document the eligibility of a cell or tissue donor. (b) Eligible donor. A donor is eligible under these...
Ansari, Ghazaleh; Fattah-Alhosseini, Arash
2017-06-01
The effects of sever plastic deformation through multi-pass accumulative roll bonding on the passive and semiconducting behavior of pure titanium is evaluated in Ringer's physiological solution at 37°C in the present paper. Produced results by polarization plots and electrochemical impedance spectroscopy measurements revealed a significant advance in the passive response of the nano-grained sample compared to that of the annealed pure titanium. Also, Mott-Schottky test results of the nano-grained pure titanium represented a lower donor density and reduced flat-band potential in the formed passive film in comparison with the annealed sample. Moreover, based on the Mott-Schottky analysis in conjunction with the point defect model, it was suggested that with increase in formation potential, the calculated donor density of both annealed and nano-grained samples decreases exponentially and the thickness of the passive film linearly increases. These observations were consistent with the point defect model predictions, considering that the point defects within the passive film are metal interstitials, oxygen vacancies, or both. From the viewpoint of passive and semiconducting behavior, nano-grained pure titanium appeared to be more suitable for implant applications in simulate human body environment compared to annealed pure titanium. Copyright © 2017 Elsevier B.V. All rights reserved.
Bae, Hyuhn-Suhck; Kang, Seok
2008-01-01
This study was designed to examine the role of issue involvement and the 3 components of the theory of planned behavior in predicting intentions to sign a cornea donor card. This study also compares viewers and nonviewers of an entertainment-education program in terms of issue involvement and the theory of planned behavior. The breakdown of effects for the latent constructs confirms that issue involvement is an important intermediary in the persuasion process. Issue involvement is a common causal antecedent of attitude, subjective norm, and perceived behavioral control, the last 2 of which, in turn, predict intentions, whereas attitude does not. The revised path model confirms that involvement directly influences intentions. In the comparison of viewers with nonviewers, viewers exhibit a significantly higher degree of involvement, attitude toward cornea donation, subjective norm, perceived behavioral control, and intention to sign a cornea donor card. The overall findings of this study suggest that adding issue involvement in the theory of planned behavior enhances the explanatory power of the theory in predicting intentions.
Boujnan, Mohamed; Duits, Ashley J; Koppelman, Marco H G M
2018-03-01
Several countries have implemented safety strategies to reduce the risk of Zika virus (ZIKV) transmission through blood transfusion. These strategies have included nucleic acid amplification testing (NAT) of blood donations. In this study, a new real-time polymerase chain reaction (PCR) assay including internal control for the detection of ZIKV on the cobas omni Utility Channel (UC) on the cobas 6800 system is presented. PCR conditions and primer/probe concentrations were optimized on the LightCycler 480 instrument. Optimized conditions were transferred to the cobas omni UC on the cobas 6800 system. Subsequently, the limit of detection (LOD) in plasma and urine, genotype inclusivity, specificity, cross-reactivity, and clinical sensitivity were determined. The 95% LOD of the ZIKV PCR assay on the cobas 6800 system was 23.0 IU/mL (95% confidence interval [CI], 16.5-37.5) in plasma and 24.5 IU/mL (95% CI, 13.4-92.9) in urine. The assay detected African and Asian lineages of ZIKV. The specificity was 100%. The clinical concordance between the newly developed ZIKV PCR assay and the investigational Roche cobas Zika NAT test was 83% (24/29). We developed a sensitive ZIKV PCR assay on the cobas omni UC on the cobas 6800 system. The assay can be used for large-scale screening of blood donations for ZIKV or for testing of blood donors returning from areas with ZIKV to avoid temporal deferral. This study also demonstrates that the cobas omni UC on the cobas 6800 system can be used for in-house-developed PCR assays. © 2018 AABB.
Demand-side management: Why ratemaking should`nt control tax policy
DOE Office of Scientific and Technical Information (OSTI.GOV)
Haney, J.D.
1995-01-01
As utilities spend money on demand-side management (DSM) programs, they usually deduct their costs currently as ordinary and necessary business expenses. However, state regulators may force deferral of DSM costs for ratemaking purposes, with possible consequences on tax returns. When regulators defer DSM costs, the Internal Revenue Service (IRS) has offered several theories to challenge current tax deductions. One theory requires capitilization instead of a current deduction if regulators include the DSM cost in rate base and provide for a rate of return on the balance. The IRS explained this theory two years ago in a White Paper on conservationmore » expenses: The direct relationship between a rate of return allowed by the Regulator for conservation expenditures allowed in rate base and future profits establishes a prima facie case for capitalization under the future benefit standard. The authors believe that IRS policy should not be linked to ratemaking decisions.« less
Incorporation — A Solution to the Veterinarian's Income Tax Miseries?
Rowan-Legg, P.K.
1980-01-01
This series of three articles discusses the new income tax rules regarding the incorporation of professionals in general and veterinarians in particular. It points out that while there may be some degree of tax saving or deferral achieved by incorporating, many provincial veterinary associations may not yet permit its members to incorporate. The incorporation of the nonprofessional aspects, however, should be carefully considered. PMID:7427853
27 CFR 41.114a - Qualification for extended deferral.
Code of Federal Regulations, 2010 CFR
2010-04-01
... bond or file a strengthening bond to increase the total amount of the bonds then in force to a..., as amended, 907, as amended; 26 U.S.C. 7101, 7652(a); 26 U.S.C. 7805) [T.D. ATF-5, 38 FR 19688, July 23, 1973. Redesignated at 40 FR 16835, Apr. 15, 1975, and amended by T.D. ATF-48, 44 FR 55855, Sept...
27 CFR 41.114a - Qualification for extended deferral.
Code of Federal Regulations, 2011 CFR
2011-04-01
... bond or file a strengthening bond to increase the total amount of the bonds then in force to a..., as amended, 907, as amended; 26 U.S.C. 7101, 7652(a); 26 U.S.C. 7805) [T.D. ATF-5, 38 FR 19688, July 23, 1973. Redesignated at 40 FR 16835, Apr. 15, 1975, and amended by T.D. ATF-48, 44 FR 55855, Sept...
Code of Federal Regulations, 2011 CFR
2011-07-01
... the terms and conditions of a scholarship agreement? 386.43 Section 386.43 Education Regulations of... terms and conditions of a scholarship agreement? In the event of a failure to meet the terms and conditions of a scholarship agreement or to obtain a deferral or an exception as provided in § 386.41, the...
Code of Federal Regulations, 2013 CFR
2013-07-01
... meet the terms and conditions of a scholarship agreement? 386.43 Section 386.43 Education Regulations... terms and conditions of a scholarship agreement? In the event of a failure to meet the terms and conditions of a scholarship agreement or to obtain a deferral or an exception as provided in § 386.41, the...
Code of Federal Regulations, 2014 CFR
2014-07-01
... the terms and conditions of a scholarship agreement? 386.43 Section 386.43 Education Regulations of... terms and conditions of a scholarship agreement? In the event of a failure to meet the terms and conditions of a scholarship agreement or to obtain a deferral or an exception as provided in § 386.41, the...
Code of Federal Regulations, 2012 CFR
2012-07-01
... meet the terms and conditions of a scholarship agreement? 386.43 Section 386.43 Education Regulations... terms and conditions of a scholarship agreement? In the event of a failure to meet the terms and conditions of a scholarship agreement or to obtain a deferral or an exception as provided in § 386.41, the...
Code of Federal Regulations, 2010 CFR
2010-07-01
... meet the terms and conditions of a scholarship agreement? 386.43 Section 386.43 Education Regulations... terms and conditions of a scholarship agreement? In the event of a failure to meet the terms and conditions of a scholarship agreement or to obtain a deferral or an exception as provided in § 386.41, the...
Is a Dream Deferred a Dream Denied? College Enrollment and Labor Market Search. Working Paper
ERIC Educational Resources Information Center
Perez-Arce, Francisco
2011-01-01
A public college in Mexico City randomly assigns applicants into a group that can immediately enroll and a group that can only do so after one year. The author shows that the standard model of educational decisions predicts no (or minimal) effect of deferral on educational attainment. He surveyed the applicants to this college for the 2007/2008…
7 CFR 1951.25 - Review of limited resource FO, OL, and SW loans.
Code of Federal Regulations, 2010 CFR
2010-01-01
..., reamortization or deferral is taken. The interest rate may not be changed more often than quarterly. (b) Method... effective date of the change in interest rate will be the effective date on Exhibit B. The borrower must be... promissory note for this change in interest rate. [50 FR 45764, Nov. 1, 1985, as amended at 53 FR 35717, Sept...
Sawe, Hendry R; Mfinanga, Juma A; Ringo, Faith H; Mwafongo, Victor; Reynolds, Teri A; Runyon, Michael S
2016-02-15
To describe the HIV counselling and testing practices for children presenting to an emergency department (ED) in a low-income country. The ED of a large east African national referral hospital. This retrospective review of all paediatric (<18 years old) ED visits in 2012 enrolled patients who had an HIV test ordered and excluded those without testing. Files were available for 5540/5774 (96%) eligible patients and 1632 (30%) were tested for HIV, median age 1.3 years (IQR 9 months to 4 years), 58% <18 months old and 61% male. The primary outcome measure was documentation of pretest and post-test counselling, or deferral of counselling, for children tested for HIV in the ED. Secondary measures included the overall rate of HIV testing, rate of counselling documented in the inpatient record when deferred in the ED, rate of counselling documented when testing was initiated by the inpatient service, rate of counselling documented by test result (positive vs negative) and the rate of referral to follow-up HIV care among patients testing positive. Of 418 patients tested in the ED, counselling, or deferral of counselling, was documented for 70 (17%). When deferred to the ward, subsequent counselling was documented for 15/42 (36%). Counselling was documented in 33% of patients testing positive versus 1.1% patients testing negative (OR 43 (95% CI 23 to 83). Of 199 patients who tested positive and survived to hospital discharge, 76 (38%) were referred for follow-up at the HIV clinic on discharge. Physicians documented the provision, or deferral, of counselling for <20% of children tested for HIV in the ED. Counselling was much more likely to be documented when the test result was positive. Less than 40% of those testing positive were referred for follow-up care. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/
ERIC Educational Resources Information Center
Cohen, Rodney T.
2006-01-01
Historically, Historically Black Colleges and Universities (HBCUs) have struggled in their attempt to solicit financial gifts from its alumni. Traditionally, black college alumni have appeared to show negligence in their effort to support their alma maters. As a result, many black colleges have ignored them as potential donors. This lack of…
Effect of shockwave curvature on run distance observed with a modified wedge test
NASA Astrophysics Data System (ADS)
Lee, Richard; Dorgan, Robert J.; Sutherland, Gerrit; Benedetta, Ashley; Milby, Christopher
2012-03-01
The effect of wave curvature on shock initiation in PBXN-110 was investigated using a modified wedge test configuration. Various widths of PBXN-110 donor slabs were used to define the shockwave curvature introduced to wedge samples of the same explosive. The donor slabs were initiated with line-wave generators so that the shock from the donor would be the same shape, magnitude and duration across the entire input surface of the wedge. The shock parameters were varied for a given donor with PMMA spacers placed between the donor and the wedge sample. A high-speed electronic framing camera was used to observe where initiation occurred along the face of the wedge. Initiation always occurred at the center of the shock front instead of along the sides like that reported by others using a much smaller test format. Results were compared to CTH calculations to indicate if there were effects associated with highly curved shock fronts that could not be adequately predicted. The run distance predicted in CTH for a 50.8 mm wide donor slab (low curvature) compared favorably with experimental results. However, results from thinner donor slabs (higher curvature) indicate a more sensitive behavior than the simulations predicted.
An Adapted Post-Donation Motivational Interview Enhances Blood Donor Retention
Sinclair, Kadian S.; Campbell, Tavis S.; Carey, Patricia M.; Langevin, Eric; Bowser, Brent; France, Christopher R.
2010-01-01
Background Blood donors may hold conflicting thoughts about future donation. While they may perceive the direct benefit to themselves and others, they often report compelling reasons not to give again. As a result the standard encouragements to return may not be sufficient to motivate some donors. The present study examined the effects of a post-donation adapted motivational interview on blood donor attitudes and repeat donation behavior. Study Design and Methods Donors (n=215) were randomly assigned to either an adapted motivational interview (AMI) or a no-interview control group. Approximately one month after their index donation, donors in the AMI group completed a brief telephone interview to clarify individual-specific motivations and values concerning blood donation and address potential barriers. They were then asked to complete questionnaires regarding donation attitudes, anxiety, self-efficacy and intention to donate. Donors in the control group were also contacted one month post-donation and asked to complete the same series of questionnaires. Results Donors in the AMI group reported greater intention to provide a future donation, F = 8.13, p < 0.05, more positive donation attitudes, F = 4.59, p < 0.05, and greater confidence in their ability to avoid adverse reactions, F = 10.26, p < 0.01. Further, AMI was associated with higher rates of attempted donation at 12 months (OR, 2.48; 95% CI, 1.27–4.87). Conclusion Application of an adapted motivational interview may be an effective strategy to increase the donor pool by enhancing retention of existing donors. PMID:20456674
Entrepreneurial ventures and whole-body donations: a regional perspective from the United States.
Anteby, Michel; Hyman, Mikell
2008-02-01
Human cadavers are crucial to medical science. While the debate on how to secure sufficient cadavers has focused primarily on donors' behaviors, procuring organizations' roles in increasing donations remain less explored. The United States offers a unique setting in which to examine this question since entrepreneurial ventures supplying cadavers for medical science have recently emerged alongside traditional academic-housed programs, raising both hopes and fears about their impact on whole-body donations. To assess their potential impact, an archival survey of voluntary, in-state whole-body donors to two programs procuring in the same U.S. state was conducted. The programs' specimen recipients were also analyzed. One program is academic-housed and the other is an entrepreneurial venture. Both offered equal levels of financial support to donating parties. Eighty donations and 120 specimen shipping invoices from 2005 were analyzed in each program. Donations to the two programs did not significantly differ in terms of donors' sex, marital status, maximum educational level, and estimated hourly wage. The entrepreneurial venture's donors were, however, significantly younger, more likely to be from a minority group, and more likely to have died from cancer. For-profit organizations, continuing medical training organizations, and medical device companies were more likely recipients of the entrepreneurial venture's specimens. Non-profit and academic organizations were more likely recipients of the academic-housed program's specimens. These findings suggest that although the programs procured from a somewhat similar pool of donors, they also complemented one another. The entrepreneurial program procured donations that the academic-housed program often did not attract. Specimen recipients' distinct demands partly explain these procurement behaviors. Thus, organizational efforts to meet demands seem to shape the supply. Examining organizations alongside donors might provide new answers to secure donations.
Pitsikas, Nikolaos; Sakellaridis, Nikolaos
2007-10-01
The effects of the non-competitive N-methyl-D-aspartate (NMDA) receptor antagonist memantine on recognition memory were investigated in the rat by using the object recognition task. In addition, a possible interaction between memantine and the nitric oxide (NO) donor molsidomine in antagonizing extinction of recognition memory was also evaluated utilizing the same behavioral procedure. In a first dose-response study, post-training administration of memantine (10 and 20, but not 3 mg/kg) antagonized recognition memory deficits in the rat, suggesting that memantine modulates storage and/or retrieval of information. In a subsequent study, combination of sub-threshold doses of memantine (3 mg/kg) and the NO donor molsidomine (1 mg/kg) counteracted delay-dependent impairments in the same task. Neither memantine (3 mg/kg) nor molsidomine (1 mg/kg) alone reduced object recognition performance deficits. The present findings indicate a) that memantine is involved in recognition memory and b) support a functional interaction between memantine and molsidomine on recognition memory mechanisms.
Do marmosets care to share? Oxytocin treatment reduces prosocial behavior toward strangers.
Mustoe, Aaryn C; Cavanaugh, Jon; Harnisch, April M; Thompson, Breanna E; French, Jeffrey A
2015-05-01
Cooperatively-breeding and socially-monogamous primates, like marmosets and humans, exhibit high levels of social tolerance and prosociality toward others. Oxytocin (OXT) generally facilitates prosocial behavior, but there is growing recognition that OXT modulation of prosocial behavior is shaped by the context of social interactions and by other motivational states such as arousal or anxiety. To determine whether prosociality varies based on social context, we evaluated whether marmoset donors (Callithrix penicillata) preferentially rewarded pairmates versus opposite-sex strangers in a prosocial food-sharing task. To examine potential links among OXT, stress systems, and prosociality, we evaluated whether pretrial cortisol levels in marmosets altered the impact of OXT on prosocial responses. Marmosets exhibited spontaneous prosociality toward others, but they did so preferentially toward strangers compared to their pairmates. When donor marmosets were treated with marmoset-specific Pro(8)-OXT, they exhibited reduced prosociality toward strangers compared to marmosets treated with saline or consensus-mammalian Leu(8)-OXT. When pretrial cortisol levels were lower, marmosets exhibited higher prosociality toward strangers. These findings demonstrate that while marmosets show spontaneous prosocial responses toward others, they do so preferentially toward opposite-sex strangers. Cooperative breeding may be associated with the expression of prosociality, but the existence of a pair-bond between marmoset partners appears to be neither necessary nor sufficient for the expression of spontaneous prosocial responses. Furthermore, high prosociality toward strangers is significantly reduced in marmosets treated with Pro(8)-OXT, suggesting that OXT does not universally enhance prosociality, but, rather OXT modulation of prosocial behavior varies depending on social context. Copyright © 2015 Elsevier Inc. All rights reserved.
Do marmosets care to share? Oxytocin treatment reduces prosocial behavior toward strangers
Mustoe, Aaryn C.; Cavanaugh, Jon; Harnisch, April M.; Thompson, Breanna E.; French, Jeffrey A.
2015-01-01
Cooperatively-breeding and socially-monogamous primates, like marmosets and humans, exhibit high levels of social tolerance and prosociality toward others. Oxytocin (OXT) generally facilitates prosocial behavior, but there is growing recognition that OXT modulation of prosocial behavior is shaped by the context of social interactions and by other motivational states such as arousal or anxiety. To determine whether prosociality varies based on social context, we evaluated whether marmoset donors (Callithrix penicillata) preferentially rewarded pairmates versus opposite-sex strangers in a prosocial food-sharing task. To examine potential links among OXT, stress systems, and prosociality, we evaluated whether pretrial cortisol levels in marmosets altered the impact of OXT on prosocial responses. Marmosets exhibited spontaneous prosociality toward others, but they did so preferentially toward strangers compared to their pairmates. When donor marmosets were treated with marmoset-specific Pro8-OXT, they exhibited reduced prosociality toward strangers compared to marmosets treated with saline or consensus-mammalian Leu8-OXT. When pretrial cortisol levels were lower, marmosets exhibited higher prosociality toward strangers. These findings demonstrate that while marmosets show spontaneous prosocial responses toward others, they do so preferentially toward opposite-sex strangers. Cooperative breeding may be associated with the expression of prosociality, but the existence of a pair-bond between marmoset partners appears to be neither necessary nor sufficient for the expression of spontaneous prosocial responses. Further, high prosociality toward strangers is significantly reduced in marmosets treated with Pro8-OXT, suggesting that OXT does not universally enhance prosociality, but, rather OXT modulation of prosocial behavior varies depending on social context. PMID:25934057
van den Akker, O B A; Crawshaw, M A; Blyth, E D; Frith, L J
2015-01-01
What are the experiences of donor-conceived adults and donors who are searching for a genetic link through the use of a DNA-based voluntary register service? Donor-conceived adults and donors held positive beliefs about their search and although some concerns in relation to finding a genetically linked relative were reported, these were not a barrier to searching. Research with donor-conceived people has consistently identified their interest in learning about-and in some cases making contact with-their donor and other genetic relatives. However, donor-conceived individuals or donors rarely have the opportunity to act on these desires. A questionnaire was administered for online completion using Bristol Online Surveys. The survey was live for 3 months and responses were collected anonymously. The survey was completed by 65 donor-conceived adults, 21 sperm donors and 5 oocyte donors who had registered with a DNA-based voluntary contact register in the UK. The questionnaire included socio-demographic questions, questions specifically developed for the purposes of this study and the standardized Aspects of Identity Questionnaire (AIQ). Motivations for searching for genetic relatives were varied, with the most common reasons being curiosity and passing on information. Overall, participants who were already linked and those awaiting a link were positive about being linked and valued access to a DNA-based register. Collective identity (reflecting self-defining feelings of continuity and uniqueness), as assessed by the AIQ, was significantly lower for donor-conceived adults when compared with the donor groups (P < 0.05), but not significantly different between linked/not linked or length of time since disclosure of donor conception (all Ps > 0.05) for donor-conceived adults. Participants were members of a UK DNA-based registry which is unique. It was therefore not possible to determine how representative participants were of those who did not register for the service, those in other countries or of those who do not seek information exchange or contact. This is the first survey exploring the experiences of donor-conceived adults and donors using a DNA-based voluntary register to seek information about and contact with genetic relatives and the first to measure aspects of identity using standardized measures. Findings provide valuable information about patterns of expectations and experiences of searching through DNA linking, identity and of having contact in the context of donor conception that will inform future research, practice and policy development. No funding was obtained for this study. The authors have no competing interests to declare except for M.C. who was national adviser to UKDL from 2003-2013. Not applicable. © The Author 2014. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved. For Permissions, please email: journals.permissions@oup.com.
The impact of the context and recruitment materials on nondonors' willingness to donate blood.
Masser, Barbara M; France, Christopher R; Himawan, Lina K; Hyde, Melissa K; Smith, Geoff
2016-12-01
Anxiety is a frequently cited barrier to blood donor recruitment. Although the mere presence of donation paraphernalia can heighten anxiety for some individuals, such stimuli are a necessary and unavoidable part of donation. Drawing on France and colleagues' research on tailored donor education and coping materials, the current study assessed whether modifying recruitment materials could improve donor recruitment in a context where anxiety is heightened. A field study comprising a 2 (presence or absence of a mobile blood collection unit [MCU]) × 2 (recruitment brochure: standard, coping) between-subjects design was conducted with 922 nondonors who believed themselves eligible to donate blood. In either the presence or absence of the MCU, participants received a standard or modified recruitment brochure modeled on France and colleagues' education and coping materials. Donation anxiety, attitude, subjective norm, self-efficacy, and intention were assessed, and donation behavior was tracked for 30 days. Participants who were assessed in the presence of the MCU reported heightened anxiety, and female participants reported decreased self-efficacy. The coping brochure improved self-efficacy, heightened the intention to donate in the presence of the MCU, and promoted blood donation behavior relative to the standard brochure. Path analyses supported a model in which, in the presence of the MCU, the coping brochure boosted self-efficacy and led to increased donation intention and behavior. In a context in which donation-related anxiety is heightened, provision of materials that address prospective donor concerns and suggest coping strategies can bolster self-efficacy and promote recruitment. © 2016 AABB.
Doherty, Sally; Dolan, Elizabeth; Flynn, Jennifer; O’Carroll, Ronan E.; Doyle, Frank
2017-01-01
Objectives: Including or excluding certain questions about organ donation may influence peoples’ intention to donate. We investigated the effect of omitting certain affective attitudinal items on potential donors’ intention and behavior for donation. Design: A cross-sectional survey with a subgroup nested randomized trial. Methods: A total of 578 members of the public in four shopping centers were surveyed on their attitudes to organ donation. Non-donors (n = 349) were randomly assigned to one of three groups: Group 1 completed items on affective and cognitive attitudes, anticipated regret, intention, subjective norm and perceived behavioral control. Group 2 completed all items above but excluded affective attitudes. Group 3 completed all items but omitted negatively worded affective attitudes. The primary outcome was intention to donate, taking a donor card after the interview was a secondary behavioral outcome, and both were predicted using linear and logistic regression with group 1 as the reference. Results: Mean (SD) 1–7 intention scores for groups 1, 2 and 3 were, respectively: 4.43 (SD 1.89), 4.95 (SD 1.64) and 4.88 (SD 1.81), with group 2 significantly higher than group 1 (β = 0.518, 95% confidence interval [CI] 0.18 to 0.86).At the end of the interview, people in group 2 (66.7%; OR = 1.40, 95% CI 0.94 to 2.07, p = 0.096) but not those in group 3 (61.7%; OR = 1.10, 95% CI 0.69 to 1.75, p = 0.685), were marginally more likely to accept a donor card from the interviewer than people in group 1 (59.7%). Conclusion: Omitting affective attitudinal items results in higher intention to donate organs and marginally higher rates of acceptance of donor cards, which has important implications for future organ donation public health campaigns. PMID:28894429
Squires, Janet E; Grimshaw, Jeremy M; Taljaard, Monica; Linklater, Stefanie; Chassé, Michaël; Shemie, Sam D; Knoll, Gregory A
2014-06-20
A shortage of transplantable organs is a global problem. There are two types of organ donation: living and deceased. Deceased organ donation can occur following neurological determination of death (NDD) or cardiocirculatory death. Donation after cardiocirculatory death (DCD) accounts for the largest increments in deceased organ donation worldwide. Variations in the use of DCD exist, however, within Canada and worldwide. Reasons for these discrepancies are largely unknown. The purpose of this study is to develop, implement, and evaluate a theory-based knowledge translation intervention to provide practical guidance about how to increase the numbers of DCD organ donors without reducing the numbers of standard NDD donors. We will use a mixed method three-step approach. In step one, we will conduct semi-structured interviews, informed by the Theoretical Domains Framework, to identify and describe stakeholders' beliefs and attitudes about DCD and their perceptions of the multi-level factors that influence DCD. We will identify: determinants of the evidence-practice gap; specific behavioural changes and/or process changes needed to increase DCD; specific group(s) of clinicians or organizations (e.g., provincial donor organizations) in need of behaviour change; and specific targets for interventions. In step two, using the principles of intervention mapping, we will develop a theory-based knowledge translation intervention that encompasses behavior change techniques to overcome the identified barriers and enhance the enablers to DCD. In step three, we will roll out the intervention in hospitals across the 10 Canadian provinces and evaluate its effectiveness using a multiple interrupted time series design. We will adopt a behavioural approach to define and test novel, theory-based, and ethically-acceptable knowledge translation strategies to increase the numbers of available DCD organ donors in Canada. If successful, this study will ultimately lead to more transplantations, reducing patient morbidity and mortality at a population-level.
2014-01-01
Background A shortage of transplantable organs is a global problem. There are two types of organ donation: living and deceased. Deceased organ donation can occur following neurological determination of death (NDD) or cardiocirculatory death. Donation after cardiocirculatory death (DCD) accounts for the largest increments in deceased organ donation worldwide. Variations in the use of DCD exist, however, within Canada and worldwide. Reasons for these discrepancies are largely unknown. The purpose of this study is to develop, implement, and evaluate a theory-based knowledge translation intervention to provide practical guidance about how to increase the numbers of DCD organ donors without reducing the numbers of standard NDD donors. Methods We will use a mixed method three-step approach. In step one, we will conduct semi-structured interviews, informed by the Theoretical Domains Framework, to identify and describe stakeholders’ beliefs and attitudes about DCD and their perceptions of the multi-level factors that influence DCD. We will identify: determinants of the evidence-practice gap; specific behavioural changes and/or process changes needed to increase DCD; specific group(s) of clinicians or organizations (e.g., provincial donor organizations) in need of behaviour change; and specific targets for interventions. In step two, using the principles of intervention mapping, we will develop a theory-based knowledge translation intervention that encompasses behavior change techniques to overcome the identified barriers and enhance the enablers to DCD. In step three, we will roll out the intervention in hospitals across the 10 Canadian provinces and evaluate its effectiveness using a multiple interrupted time series design. Discussion We will adopt a behavioural approach to define and test novel, theory-based, and ethically-acceptable knowledge translation strategies to increase the numbers of available DCD organ donors in Canada. If successful, this study will ultimately lead to more transplantations, reducing patient morbidity and mortality at a population-level. PMID:24950719
Street, Annette F; Wakelin, Kate; Hordern, Amanda; Bruce, Nicola; Horey, Dell
2012-01-01
This paper examines the value of facilitated telephone and online support groups for palliative care. Telephone interviews were conducted with twenty people living with advanced cancer who had participated in either a telephone or online support group facilitated by the Cancer Council Victoria, Melbourne, Australia. Two dominant participant narratives emerged: a focus on dying with dignity or an interest in deferring discussion of death and dying to focus on the present. Despite the different approaches, participants found the technology-based support groups to be accessible and safe environments in which to discuss difficult topics in privacy. Technology-based strategies provide opportunities for health professionals to provide social and emotional care to more people by moving beyond individualised care and facilitate peer-to-peer support at the end of life, especially to those with specific needs. Such options are feasible for palliative care services to set up and acceptable to a group of clients, especially for younger clients or those socially or geographically isolated.
Street, Annette F.; Wakelin, Kate; Hordern, Amanda; Bruce, Nicola; Horey, Dell
2012-01-01
This paper examines the value of facilitated telephone and online support groups for palliative care. Telephone interviews were conducted with twenty people living with advanced cancer who had participated in either a telephone or online support group facilitated by the Cancer Council Victoria, Melbourne, Australia. Two dominant participant narratives emerged: a focus on dying with dignity or an interest in deferring discussion of death and dying to focus on the present. Despite the different approaches, participants found the technology-based support groups to be accessible and safe environments in which to discuss difficult topics in privacy. Technology-based strategies provide opportunities for health professionals to provide social and emotional care to more people by moving beyond individualised care and facilitate peer-to-peer support at the end of life, especially to those with specific needs. Such options are feasible for palliative care services to set up and acceptable to a group of clients, especially for younger clients or those socially or geographically isolated. PMID:22530115
DOE Office of Scientific and Technical Information (OSTI.GOV)
Cave, R.J.; Newton, M.D.; Kumar, K.
1995-12-07
The recently developed generalized Mulliken-Hush approach for the calculation of the electronic coupling matrix element for electron-transfer processes is applied to two rigidly linked donor-bridge-acceptor systems having dimethoxyanthracene as the donor and a dicarbomethoxycyclobutene unit as the acceptor. The dependence of the electronic coupling matrix element as a function of bridge type is examined with and without solvent molecules present. For clamp-shaped bridge structures solvent can have a dramatic effect on the electronic coupling matrix element. The behavior with variation of solvent is in good agreement with that observed experimentally for these systems. 23 refs., 2 tabs.
The Familial and the Familiar: Locating Relatedness in Colombian Donor Conception.
Shaw, Malissa Kay
2017-09-20
In this article, I explore how women undergoing in vitro fertilization with familial or anonymous egg donors located relatedness with a donor-conceived child through familial and social identities. Recognizing gametes as substances that contain biological and sociocultural/behavioral traits shaped women's narratives around interconnected notions of the familial and familiar, or the social understanding of biological and social inheritance, and knowledge of the genetic materials involved. Women's narratives of relatedness reflect their relationships with family and society and their desire to reproduce these relationships in their child(ren), a process that reproduces prevailing Colombian social values and notions of ideal citizens.
Ivancik, J.; Naranjo, M.; Correa, S.; Ossa, A.; Tay, F.R.; Pashley, D.H.; Arola, D.
2014-01-01
Spatial variations in the microstructure of dentin contribute to its mechanical behavior. Objective The objective of this investigation was to compare the microstructure and fatigue behavior of dentin from donors of two different countries. Methods Caries-free third molars were obtained from dental practices in Colombia, South America and the US to assemble two age-matched samples. The microstructure of the coronal dentin was evaluated at three characteristic depths (i.e. deep, middle and superficial dentin) using scanning electron microscopy and image processing techniques. The mechanical behavior of dentin in these three regions was evaluated by the fatigue crack growth resistance. Cyclic crack growth was achieved in-plane with the dentin tubules and the fatigue crack growth behavior was characterized in terms of the stress intensity threshold and the Paris Law parameters. Results There was no difference in the tubule density between the dentin of patients from the two countries. However, there were significant differences (p≤0.05) in the tubule lumen diameters between the two groups in the deep and peripheral regions. In regards to the fatigue resistance, there was a significant increase (p≤0.05) in threshold stress intensity range, and a significant decrease in fatigue crack growth coefficient with increasing distance from the pulp in teeth from the US donors. In contrast, these properties were independent of location for the dentin of teeth from the Colombian donors. Conclusions The microstructure of dentin and its mechanical behavior appear to be a function of patient background, which may include environmental factors and/or ethnicity. PMID:24960115
Statistical exchange-coupling errors and the practicality of scalable silicon donor qubits
NASA Astrophysics Data System (ADS)
Song, Yang; Das Sarma, S.
2016-12-01
Recent experimental efforts have led to considerable interest in donor-based localized electron spins in Si as viable qubits for a scalable silicon quantum computer. With the use of isotopically purified 28Si and the realization of extremely long spin coherence time in single-donor electrons, the recent experimental focus is on two-coupled donors with the eventual goal of a scaled-up quantum circuit. Motivated by this development, we simulate the statistical distribution of the exchange coupling J between a pair of donors under realistic donor placement straggles, and quantify the errors relative to the intended J value. With J values in a broad range of donor-pair separation ( 5 <|R |<60 nm), we work out various cases systematically, for a target donor separation R0 along the [001], [110] and [111] Si crystallographic directions, with |R0|=10 ,20 or 30 nm and standard deviation σR=1 ,2 ,5 or 10 nm. Our extensive theoretical results demonstrate the great challenge for a prescribed J gate even with just a donor pair, a first step for any scalable Si-donor-based quantum computer.
NASA Astrophysics Data System (ADS)
Aciksoz, Esra; Bayrak, Orhan; Soylu, Asim
2016-10-01
The behavior of a donor in the GaAs-Ga1-x Al x As quantum well wire represented by the Morse potential is examined within the framework of the effective-mass approximation. The donor binding energies are numerically calculated for with and without the electric and magnetic fields in order to show their influence on the binding energies. Moreover, how the donor binding energies change for the constant potential parameters (D e, r e, and a) as well as with the different values of the electric and magnetic field strengths is determined. It is found that the donor binding energy is highly dependent on the external electric and magnetic fields as well as parameters of the Morse potential. Project supported by the Turkish Science Research Council (TÜBİTAK) and the Financial Supports from Akdeniz and Nigde Universities.
Code of Federal Regulations, 2013 CFR
2013-04-01
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2014-04-01
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2012-04-01
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2010-08-31
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Ghosh, Rajib; Kushwaha, Archana; Das, Dipanwita
2017-09-21
Fluorescent molecular rotors find widespread application in sensing and imaging of microscopic viscosity in complex chemical and biological media. Development of viscosity-sensitive ultrafast molecular rotor (UMR) relies upon the understanding of the excited-state dynamics and their implications for viscosity-dependent fluorescence signaling. Unraveling the structure-property relationship of UMR behavior is of significance toward development of an ultrasensitive fluorescence microviscosity sensor. Herein we show that the ground-state equilibrium conformation has an important role in the ultrafast twisting dynamics of UMRs and consequent viscosity sensing efficiency. Synthesis, photophysics, and ultrafast spectroscopic experiments in conjunction with quantum chemical calculation of a series of UMRs based on dimethylaniline donor and benzimidazolium acceptor with predefined ground-state torsion angle led us to unravel that the ultrafast torsional dynamics around the bond connecting donor and acceptor groups profoundly influences the molecular rotor efficiency. This is the first experimental demonstration of conformational control of small-molecule-based UMR efficiencies which can have wider implication toward development of fluorescence sensors based on the UMR principle. Conformation-controlled UMR efficiency has been shown to exhibit commensurate fluorescence enhancement upon DNA binding.
Jeffres, Leo W; Carroll, Jeanine A; Rubenking, Bridget E; Amschlinger, Joe
2008-12-01
Fishbein and Ajzen's theory of reasoned action has been used by many researchers, particularly in regard to health communication, to predict behavioral intentions and behavior. According to that theory, one's intention is the best predictor that one will engage in a behavior, and attitudes and social norms predict behavioral intentions. Other researchers have added different variables to the postulates of attitudes and social norms that Fishbein and Ajzen maintain are the best predictors of behavioral intention. Here we draw on data from a 2006 telephone survey (N = 420) gauging the awareness of an organ donation campaign in Northeast Ohio to examine the impact of communication on people's intentions. The current study supports the hypothesis that those who communicate with others are more likely to express a greater willingness to become an organ donor, but it expands the range of communication contexts. With demographics and attitudes toward organ donation controlled for, this study shows that communication with others about organ donation increases the willingness of individuals to have favorable attitudes about being an organ donor.