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1

Eurycoma longifolia Jack in managing idiopathic male infertility  

Microsoft Academic Search

This study investigated the effect of treatment with the proprietary standardized, water-soluble extract of the root of the Malaysian plant, Eurycoma longifolia Jack, which is thought to enhance male fertility with regard to higher semen volumes, sperm concentrations, the percentage of normal sperm morphology and sperm motility in male partners of sub-fertile couples with idiopathic infertility. A total of 350

Mohd Ismail Bin Mohd Tambi; M. Kamarul Imran

2010-01-01

2

The Effect of Eurycoma Longifolia Jack on Spermatogenesis in Estrogen-Treated Rats  

PubMed Central

INTRODUCTION: There is little data concerning the ability of Eurycoma longifolia Jack (EL) to reverse the inhibitory effects of estrogen on testosterone production and spermatogenesis. The aim of the present study was to determine the effect of EL on testicular histology and sperm count in estrogen-treated male rats. METHODS: Adult male Sprague-Dawley rats weighing 200–250 g were divided into four groups of six rats each. Group A (control) was given solvent in the same manner as the treated groups were given EL. Group B was treated with EL (8 mg/kg body weight) orally. Group C was treated with estradiol (E2) (intramuscular dose of 500 ?g/kg body weight), and group D received a combined treatment of oral EL and intramuscular E2. After fourteen consecutive days of treatment, rats from all groups were sacrificed and subjected to spermatogenic and epididymal sperm cell counts. RESULTS: The spermatogenic cell count in the E2-treated group was significantly decreased as compared to the control (p < 0.05) and EL+E2-treated groups (p < 0.05). A similar finding was found for the epididymal sperm count; the E2-treated group had a significant decrease in the count compared to the control (p < 0.05) and EL+E2-treated groups (p < 0.05). Rats that were treated with EL alone exhibited significantly higher sperm counts and sperm motility when compared to the control group (p < 0.05). CONCLUSIONS: EL extract acts as a potential agent for reversing the effects of estrogen by increasing spermatogenesis and sperm counts in rats after fourteen consecutive days of treatment. PMID:20126351

Wahab, Norhazlina Abdul; Mokhtar, Norfilza M.; Halim, Wan Nurul Heriza A; Das, Srijit

2010-01-01

3

In vivo effects of Eurycoma longifolia Jack (Tongkat Ali) extract on reproductive functions in the rat.  

PubMed

An aqueous extract of Eurycoma longifolia (Tongkat Ali; TA) roots is traditionally used to enhance male sexuality. Because previous studies are limited to only few sperm parameters or testosterone concentration, this study investigated the in vivo effects of TA on body and organ weight as well as functional sperm parameters in terms of safety and efficacy in the management of male infertility. Forty-two male rats were divided into a control, low-dose (200 mg kg(-1) BW) and high-dose (800 mg kg(-1) BW) group (n = 14). Rats were force-fed for 14 days and then sacrificed. Total body and organ weights of the prostate, testes, epididymides, gastrocnemius muscle and the omentum were recorded. Moreover, testosterone concentration, sperm concentration, motility, velocity, vitality, acrosome reaction and mitochondrial membrane potential (MMP) were assessed. Whilst TA decreased BW by 5.7% (P = 0.0276) and omentum fat by 31.9% (P = 0.0496), no changes in organ weights were found for the prostate, testes and epididymides. Testosterone concentration increased by 30.2% (P = 0.0544). Muscle weight also increased, yet not significantly. Whilst sperm concentration, total and progressive motility and vitality increased significantly, MMP improved markedly (P = 0.0765) by 25.1%. Because no detrimental effect could be observed, TA appears safe for possible treatment of male infertility and ageing male problems. PMID:23464350

Solomon, M C; Erasmus, N; Henkel, R R

2014-05-01

4

Evaluation of Acute 13-Week Subchronic Toxicity and Genotoxicity of the Powdered Root of Tongkat Ali (Eurycoma longifolia Jack)  

PubMed Central

Tongkat Ali (Eurycoma longifolia) is an indigenous traditional herb in Southern Asia. Its powdered root has been processed to produce health supplements, but no detailed toxicology report is available. In this study, neither mutagenicity nor clastogenicity was noted, and acute oral LD50 was more than 6?g/kg b.w. After 4-week subacute and 13-week subchronic exposure paradigms (0, 0.6, 1.2, and 2?g/kg b.w./day), adverse effects attributable to test compound were not observed with respect to body weight, hematology, serum biochemistry, urinalysis, macropathology, or histopathology. However, the treatment significantly reduced prothrombin time, partial thromboplastin time, blood urea nitrogen, creatinine, aspartate aminotransferase, creatine phosphate kinase, lactate dehydrogenase, and cholesterol levels, especially in males (P < 0.05). These changes were judged as pharmacological effects, and they are beneficial to health. The calculated acceptable daily intake (ADI) was up to 1.2 g/adult/day. This information will be useful for product development and safety management. PMID:24062779

Liao, Jiunn-Wang; Liao, Po-Lin; Huang, Wei-Kuang; Tse, Ling-Shan; Lin, Cheng-Hui; Kang, Jaw-Jou; Cheng, Yu-Wen

2013-01-01

5

Supplementation of Eurycoma longifolia Jack Extract for 6 Weeks Does Not Affect Urinary Testosterone: Epitestosterone Ratio, Liver and Renal Functions in Male Recreational Athletes  

PubMed Central

Background: Eurycoma longifolia Jack (ElJ) has been shown to elevate serum testosterone and increased muscle strength in humans. This study investigated the effects of Physta® a standardized water extract of ElJ (400 mg/day for 6 weeks) on testosterone: epitestosterone (T:E) ratio, liver and renal functions in male recreational athletes. Methods: A total of 13 healthy male recreational athletes were recruited in this double blind, placebo-controlled, cross-over study. The participants were required to consume either 400 mg of ElJ or placebo daily for 6 weeks in the first supplementation regimen. Following a 3 week wash-out period, the participants were requested to consume the other supplement for another 6 weeks. Mid-stream urine samples and blood samples were collected prior to and after 6 weeks of supplementation with either ElJ or placebo. The urine samples were subsequently analyzed for T:E ratio while the blood samples were analyzed for liver and renal functions. Results: T:E ratio was not significantly different following 6 weeks supplementation of either ElJ or placebo compared with their respective baseline values. Similarly, there were no significant changes in both the liver and renal functions tests following the supplementation of ElJ. Conclusions: Supplementation of ElJ i.e. Physta® at a dosage of 400 mg/day for 6 weeks did not affect the urinary T:E ratio and hence will not breach any doping policies of the International Olympic Committee for administration of exogenous testosterone or its precursor. In addition, the supplementation of ElJ at this dosage and duration was safe as it did adversely affect the liver and renal functions. PMID:25013692

Chen, Chee Keong; Mohamad, Wan Mohd Zahiruddin Wan; Ooi, Foong Kiew; Ismail, Shaiful Bahari; Abdullah, Mohamad Rusli; George, Annie

2014-01-01

6

NF-?B Inhibitors from Eurycoma longifolia  

PubMed Central

The roots of Eurycoma longifolia have been used in many countries of Southeast Asia to alleviate various diseases including malaria, dysentery, sexual insufficiency, and rheumatism. Although numerous studies have reported the pharmacological properties of E. longifolia, the mode of action of the anti-inflammatory activity has not been elucidated. Bioguided isolation of NF-?B inhibitors using an NF-?B-driven luciferase reporter gene assay led to the identification of a new quassinoid, eurycomalide C (1), together with 27 known compounds including 11 quassinoids (2–12), six alkaloids (13–18), two coumarins (19, 20), a squalene derivative (21), a triterpenoid (22), and six phenolic compounds (23–28) from the extract of E. longifolia. Evaluation of the biological activity revealed that C19-type and C20-type quassinoids, ?-carboline, and canthin-6-one alkaloids are potent NF-?B inhibitors, with IC50 values in the low micromolar range, while C18-type quassinoids, phenolic compounds, coumarins, the squalene derivative, and the triterpenoid turned out to be inactive when tested at a concentration of 30 ?M. Eurycomalactone (2), 14,15?-dihydroklaieanone (7), and 13,21-dehydroeurycomanone (10) were identified as potent NF-?B inhibitors with IC50 values of less than 1 ?M. PMID:24467387

2014-01-01

7

Comparative study on the effect of Eurycoma longifolia and Smilax myosotiflora on male rats fertility  

NASA Astrophysics Data System (ADS)

The effects of Eurycoma longifolia Jack and Smilax myosotiflora were studied on sperm quality include sperm count, motility, viability and histology of the testis and pregnancy rate after mating with fertile proved females, as well as litter size on Sprague-Dawley (S-D) adult male rats. After dosing them with distilled water group A, group B 150 mg/kg body weight of aqueous extract of E. longifolia roots, group C 150 mg/kg body weight aqueous extract of S. myosotiflora leaf and group D 150 mg/kg body weight of E. longifolia combined with 150 mg/kg S. myosotiflora body weight daily for 14 days of stage (a) and 28 days for stage (b) of treatments. Results exhibited no significant variation (P>0.05) of stage (a),while results showed that E. longifolia Jack increase (P<0.05) the sperm count, motility, viability and histology of the testis and gender (male) of the litter size respectively of stage (b). This study provides evidence that E. longifolia Jack is a potent stimulator of fertility in male rat.

Mahmoud, Amal Salem Farag; Noor, Mahanem Mat

2013-11-01

8

Bioavailability and pharmacokinetic studies of eurycomanone from Eurycoma longifolia.  

PubMed

A validated HPLC analysis of eurycomanone (1), a bioactive quassinoid, in rat plasma following oral and intravenous administration of Eurycoma longifolia Jack extract was developed for pharmacokinetic and bioavailability studies. Relatively high plasma eurycomanone concentrations were detected after an intravenous injection of 10 mg/kg extract F2 containing 1.96 mg/kg of the quassinoid. However, it declined rapidly to zero after 8 h. Its mean elimination rate constant (k(e)), biological half-life (t(1/2)), volume of distribution (V(d)) and clearance (CL) were 0.88 +/- 0.19 h (-1), 1.00 +/- 0.26 h, 0.68 +/- 0.30 L/kg and 0.39 +/- 0.08 L/h/kg, respectively. Following oral administration of eurycomanone, its Cmax and Tmax values were detected as 0.33 +/- 0.03 microg/mL and 4.40 +/- 0.98 h, respectively. The plasma concentration of the quassinoid after oral administration was much lower than after intravenous application in spite of the oral dose being 5 times higher. The results indicate that eurycomanone is poorly bioavailable when given orally. A comparison of the AUC (0-->infinity) obtained orally to that obtained after an intravenous administration (normalized for dose differences) revealed that the absolute bioavailability of the compound was low with 10.5 %. Furthermore, the compound appeared to be well distributed in the extravascular fluids because of its relatively high V(d) value. The poor oral bioavailability was not attributed to instability problems because eurycomanone has been shown to be stable under different pH conditions. Thus, its poor oral bioavailability may be due to poor membrane permeability in view of its low P value and/or high first-pass metabolism. PMID:16206032

Low, Bin-Seng; Ng, Bee-Hong; Choy, Wai-Peng; Yuen, Kah-Hay; Chan, Kit-Lam

2005-09-01

9

Eurycoma longifolia: Medicinal Plant in the Prevention and Treatment of Male Osteoporosis due to Androgen Deficiency  

PubMed Central

Osteoporosis in elderly men is now becoming an alarming health issue due to its relation with a higher mortality rate compared to osteoporosis in women. Androgen deficiency (hypogonadism) is one of the major factors of male osteoporosis and it can be treated with testosterone replacement therapy (TRT). However, one medicinal plant, Eurycoma longifolia Jack (EL), can be used as an alternative treatment to prevent and treat male osteoporosis without causing the side effects associated with TRT. EL exerts proandrogenic effects that enhance testosterone level, as well as stimulate osteoblast proliferation and osteoclast apoptosis. This will maintain bone remodelling activity and reduce bone loss. Phytochemical components of EL may also prevent osteoporosis via its antioxidative property. Hence, EL has the potential as a complementary treatment for male osteoporosis. PMID:22844328

Mohd Effendy, Nadia; Mohamed, Norazlina; Muhammad, Norliza; Naina Mohamad, Isa; Shuid, Ahmad Nazrun

2012-01-01

10

Anti-Tumor Activity of Eurycoma longifolia Root Extracts against K-562 Cell Line: In Vitro and In Vivo Study  

PubMed Central

Eurycoma longifolia Jack has been widely used in traditional medicine for its antimalarial, aphrodisiac, anti-diabetic, antimicrobial and anti-pyretic activities. Its anticancer activity has also been recently reported on different solid tumors, however no anti-leukemic activity of this plant has been reported. Thus the present study assesses the in vitro and in vivo anti-proliferative and apoptotic potentials of E. longifolia on K-562 leukemic cell line. The K-562 cells (purchased from ATCC) were isolated from patients with chronic myelocytic leukemia (CML) were treated with the various fractions (TAF273, F3 and F4) of E. longifolia root methanolic extract at various concentrations and time intervals and the anti-proliferative activity assessed by MTS assay. Flow cytometry was used to assess the apoptosis and cell cycle arrest. Nude mice injected subcutaneously with 107 K-562 cells were used to study the anti-leukemic activity of TAF273 in vivo. TAF273, F3 and F4 showed various degrees of growth inhibition with IC50 values of 19, 55 and 62 µg/ml, respectively. TAF273 induced apoptosis in a dose and time dependent manner. TAF273 arrested cell cycle at G1and S phases. Intraperitoneal administration of TAF273 (50 mg/kg) resulted in a significant growth inhibition of subcutaneous tumor in TAF273-treated mice compared with the control mice (P?=?0.024). TAF273 shows potent anti-proliferative activity in vitro and in vivo models of CML and therefore, justifies further efforts to define more clearly the potential benefits of using TAF273 as a novel therapeutic strategy for CML management. PMID:24409284

Majid, Amin Malik Shah Abdul; Kit-Lam, Chan; Abdullah, Wan Zaidah; Zaki, Abdelhamid; Jamal Din, Shah Kamal Khan; Yusoff, Narazah Mohd

2014-01-01

11

Effects of Eurycoma longifolia on Testosterone Level and Bone Structure in an Aged Orchidectomised Rat Model  

PubMed Central

Testosterone replacement is the choice of treatment in androgen-deficient osteoporosis. However, long-term use of testosterone is potentially carcinogenic. Eurycoma longifolia (EL) has been reported to enhance testosterone level and prevent bone calcium loss but there is a paucity of research regarding its effect on the bone structural parameters. This study was conducted to explore the bone structural changes following EL treatment in normal and androgen-deficient osteoporosis rat model. Thirty-six male Sprague-Dawley rats aged 12 months were divided into normal control, normal rat supplemented with EL, sham-operated, orchidectomised-control, orchidectomised with testosterone replacement, and orchidectomised with EL supplementation groups. Testosterone serum was measured both before and after the completion of the treatment. After 6 weeks of the treatment, the femora were processed for bone histomorphometry. Testosterone replacement was able to raise the testosterone level and restore the bone volume of orchidectomised rats. EL supplementation failed to emulate both these testosterone actions. The inability of EL to do so may be related to the absence of testes in the androgen deficient osteoporosis model for EL to stimulate testosterone production. PMID:22966245

Tajul Ariff, Abdul Shukor; Soelaiman, Ima Nirwana; Pramanik, J.; Shuid, Ahmad Nazrun

2012-01-01

12

Phytoandrogenic properties of Eurycoma longifolia as natural alternative to testosterone replacement therapy.  

PubMed

The testosterone deficiency syndrome (TDS) is characterised by numerous symptoms, including low libido, increased fat mass, fatigue, erectile dysfunction or osteoporosis, and up to 80% of men will experience some kind of ageing males' symptoms. This is caused by the age-depending decline in serum testosterone levels with concentrations being about 40-50% lower in men older than 60 years compared with young men. This significant decline in testosterone levels is further closely linked with medical conditions such as obesity, metabolic syndrome, diabetes or hypertension. The conventional way of treating TDS is the testosterone replacement therapy (TRT), for which preparations are on the market. Apart from the beneficial effects of TRT, significant adverse side effects have been described, and prostate cancer (PCa) as absolute contraindication is debated. Eurycoma longifolia (Tongkat Ali; TA) is natural alternative to TRT and has been shown to restore serum testosterone levels, thus significantly improving sexual health. This includes significant positive effects on bone health and physical condition of patients. In addition, a significant antihyperglycaemic effect and cytotoxicity against PCas cells has been shown. Thus far, at therapeutic concentrations, no significant side effects of the treatment were obvious. Therefore, TA might be a safe alternative to TRT. PMID:24386995

George, A; Henkel, R

2014-09-01

13

Standardised water-soluble extract of Eurycoma longifolia, Tongkat ali, as testosterone booster for managing men with late-onset hypogonadism?  

PubMed

In most countries, millions of people are relying on herbal medicines as remedy for numerous ailments. In South-East Asia, Eurycoma longifolia Jack, also known as 'Malaysian ginseng' or Tongkat ali, is used to combat stress and disease and to improve physical strength. Moreover, the compounds of the roots of this plant are reported to have aphrodisiac and testosterone enhancing effects in the rat. Considering that human studies are not available, 76 of 320 patients suffering from late-onset hypogonadism (LOH) were given 200 mg of a standardised water-soluble extract of Tongkat ali for 1 month. The Ageing Males' Symptoms (AMS) according to the standardised rating scale and the serum testosterone concentration were taken. Results show that treatment of LOH patients with this Tongkat ali extract significantly (P < 0.0001) improved the AMS score as well as the serum testosterone concentration. While before treatment only 10.5% of the patients did not show any complaint according to the AMS scale and 35.5% had normal testosterone levels, after the completed treatment 71.7% and 90.8% of the patients showed normal values, respectively. Thus, Tongkat ali extract appears to be useful as a supplement in overcoming the symptoms of LOH and for the management of hypogonadism. PMID:21671978

Tambi, M I B M; Imran, M K; Henkel, R R

2012-05-01

14

Eurycoma longifolia upregulates osteoprotegerin gene expression in androgen- deficient osteoporosis rat model  

PubMed Central

Background Eurycoma longifolia (EL) has been shown recently to protect against bone calcium loss in orchidectomised rats, the model for androgen-deficient osteoporosis. The mechanism behind this is unclear but it may be related to its ability to elevate testosterone levels or it may directly affect bone remodeling. The aim of this study is to determine the mechanism involved by investigating the effects of EL extract on serum testosterone levels, bone biomarkers, biomechanical strength and gene expression of Receptor Activator of Nuclear Factor kappa-B ligand (RANKL), Osteoprotegerin (OPG) and Macrophage-Colony Stimulating Factor (MCSF) in orchidectomised rats. Methods Thirty-two male Sprague–Dawley rats were divided into: Sham-operated group (SHAM); orchidectomised-control group (ORX); orchidectomised and given 15?mg/kg EL extract (ORX + EL) and orchidectomised and given 8?mg/kg testosterone (ORX + T). The rats were treated for 6?weeks. The serum levels of testosterone, osteocalcin and C-terminal telopeptide of type I collagen (CTX) were measured using the ELISA technique. The femoral bones were subjected to biomechanical testing. The tibial bone gene expressions of RANKL, OPG and MCSF were measured using the branch DNA technique. Results The post-treatment level of testosterone was found to be significantly reduced by orchiectomy (p < 0.05). Both ORX + EL and ORX + T groups have significantly higher post-treatment testosterone levels compared to their pre-treatment levels (p < 0.05). The bone resorption marker (CTx) was elevated after orchiectomy but was suppressed after treatment in the ORX + EL and ORX + T groups (p < 0.05). There was no significant finding for the femoral biomechanical parameters. The tibial OPG gene expression in the ORX group was significantly lower compared to the SHAM and ORX + EL groups (p < 0.05). Conclusion Supplementation with EL extract elevated the testosterone levels, reduced the bone resorption marker and upregulated OPG gene expression of the orchidectomised rats. These actions may be responsible for the protective effects of EL extract against bone resorption due to androgen deficiency. PMID:22967165

2012-01-01

15

The In Vitro and In Vivo Anti-Cancer Activities of a Standardized Quassinoids Composition from Eurycoma longifolia on LNCaP Human Prostate Cancer Cells  

PubMed Central

Quassinoids are a group of diterpenoids found in plants from the Simaroubaceae family. They are also the major bioactive compounds found in Eurycoma longifolia which is commonly used as traditional medicine in South East Asia to treat various ailments including sexual dysfunction and infertility. These uses are attributed to its ability to improve testosterone level in men. Chronic consumption of E. longifolia extracts has been reported to increase testosterone level in men and animal model but its effect on prostate growth remains unknown. Therefore, the present study investigates the effects of a standardized total quassinoids composition (SQ40) containing 40% of the total quassinoids found in E. longifolia on LNCaP human prostate cancer cell line. SQ40 inhibited LNCaP cell growth at IC50 value of 5.97 ?g/mL while the IC50 on RWPE-1 human prostate normal cells was 59.26 ?g/mL. SQ40 also inhibited 5?-dihydrotestosterone-stimulated growth in LNCaP cells dose-dependently. The inhibitory effect of SQ40 in anchorage-independent growth of LNCaP cells was also demonstrated using soft agar assay. SQ40 suppressed LNCaP cell growth via G0/G1 phase arrest which was accompanied by the down-regulation of CDK4, CDK2, Cyclin D1 and Cyclin D3 and up-regulation of p21Waf1/Cip1 protein levels. SQ40 at higher concentrations or longer treatment duration can cause G2M growth arrest leading to apoptotic cell death as demonstrated by the detection of poly(ADP-ribose) polymerase cleavage in LNCaP cells. Moreover, SQ40 also inhibited androgen receptor translocation to nucleus which is important for the transactivation of its target gene, prostate-specific antigen (PSA) and resulted in a significant reduction of PSA secretion after the treatment. In addition, intraperitoneal injection of 5 and 10 mg/kg of SQ40 also significantly suppressed the LNCaP tumor growth on mouse xenograft model. Results from the present study suggest that the standardized total quassinoids composition from E. longifolia promotes anti-prostate cancer activities in LNCaP human prostate cancer cells. PMID:25826409

Tong, Kind Leng; Chan, Kit Lam; AbuBakar, Sazaly; Low, Bin Seng; Ma, Hai Qiu; Wong, Pooi Fong

2015-01-01

16

Randomized Clinical Trial on the Use of PHYSTA Freeze-Dried Water Extract of Eurycoma longifolia for the Improvement of Quality of Life and Sexual Well-Being in Men  

PubMed Central

Eurycoma longifolia is reputed as an aphrodisiac and remedy for decreased male libido. A randomized, double-blind, placebo controlled, parallel group study was carried out to investigate the clinical evidence of E. longifolia in men. The 12-week study in 109 men between 30 and 55 years of age consisted of either treatment of 300?mg of water extract of E. longifolia (Physta) or placebo. Primary endpoints were the Quality of Life investigated by SF-36 questionnaire and Sexual Well-Being investigated by International Index of Erectile Function (IIEF) and Sexual Health Questionnaires (SHQ); Seminal Fluid Analysis (SFA), fat mass and safety profiles. Repeated measures ANOVA analysis was used to compare changes in the endpoints. The E. longifolia (EL) group significantly improved in the domain Physical Functioning of SF-36, from baseline to week 12 compared to placebo (P = 0.006) and in between group at week 12 (P = 0.028). The EL group showed higher scores in the overall Erectile Function domain in IIEF (P < 0.001), sexual libido (14% by week 12), SFA- with sperm motility at 44.4%, and semen volume at 18.2% at the end of treatment. Subjects with BMI ? 25?kg/m2 significantly improved in fat mass lost (P = 0.008). All safety parameters were comparable to placebo. PMID:23243445

Ismail, Shaiful Bahari; Wan Mohammad, Wan Mohd Zahiruddin; George, Annie; Nik Hussain, Nik Hazlina; Musthapa Kamal, Zatul Mufiza; Liske, Eckehard

2012-01-01

17

Randomized Clinical Trial on the Use of PHYSTA Freeze-Dried Water Extract of Eurycoma longifolia for the Improvement of Quality of Life and Sexual Well-Being in Men.  

PubMed

Eurycoma longifolia is reputed as an aphrodisiac and remedy for decreased male libido. A randomized, double-blind, placebo controlled, parallel group study was carried out to investigate the clinical evidence of E. longifolia in men. The 12-week study in 109 men between 30 and 55 years of age consisted of either treatment of 300?mg of water extract of E. longifolia (Physta) or placebo. Primary endpoints were the Quality of Life investigated by SF-36 questionnaire and Sexual Well-Being investigated by International Index of Erectile Function (IIEF) and Sexual Health Questionnaires (SHQ); Seminal Fluid Analysis (SFA), fat mass and safety profiles. Repeated measures ANOVA analysis was used to compare changes in the endpoints. The E. longifolia (EL) group significantly improved in the domain Physical Functioning of SF-36, from baseline to week 12 compared to placebo (P = 0.006) and in between group at week 12 (P = 0.028). The EL group showed higher scores in the overall Erectile Function domain in IIEF (P < 0.001), sexual libido (14% by week 12), SFA- with sperm motility at 44.4%, and semen volume at 18.2% at the end of treatment. Subjects with BMI ? 25?kg/m(2) significantly improved in fat mass lost (P = 0.008). All safety parameters were comparable to placebo. PMID:23243445

Ismail, Shaiful Bahari; Wan Mohammad, Wan Mohd Zahiruddin; George, Annie; Nik Hussain, Nik Hazlina; Musthapa Kamal, Zatul Mufiza; Liske, Eckehard

2012-01-01

18

Effects of a Proprietary Freeze-Dried Water Extract of Eurycoma longifolia (Physta) and Polygonum minus on Sexual Performance and Well-Being in Men: A Randomized, Double-Blind, Placebo-Controlled Study  

PubMed Central

Background. Physta is a proprietary product containing a freeze-dried water extract of Eurycoma longifolia (tongkat ali), which is traditionally used as an energy enhancer and aphrodisiac. We aim to evaluate a 300?mg combination of Physta and Polygonum minus, an antioxidant, with regard to sexual performance and well-being in men. Methods. Men that aged 40–65 years were screened for this 12-week randomized, double-blind, placebo-controlled, parallel-group study. Outcome measures included validated questionnaires that aimed to evaluate erectile function, satisfaction with intervention, sexual intercourse performance, erectile hardness, mood, and overall quality of life. Results. 12 subjects in the active group and 14 in the placebo group completed the study. Significant improvements were noted in scores for the Sexual Intercourse Attempt diary, Erection Hardness Scale, Sexual Health Inventory of Men, and Aging Male Symptom scale (P < 0.05 for all). Three adverse events were reported in the active group and four in the placebo group, none of which were attributed to study product. Laboratory evaluations, including liver and kidney function testing, showed no clinically significant abnormality. Conclusion. Supplementation for twelve weeks with Polygonum minus and the proprietary Eurycoma longifolia extract, Physta, was well tolerated and more effective than placebo in enhancing sexual performance in healthy volunteers. PMID:24550993

Udani, Jay K.; George, Annie A.; Musthapa, Mufiza; Pakdaman, Michael N.; Abas, Azreena

2014-01-01

19

Eurycomanone suppresses expression of lung cancer cell tumor markers, prohibitin, annexin 1 and endoplasmic reticulum protein 28  

Microsoft Academic Search

Bioactive compounds from the medicinal plant, Eurycoma longifolia Jack have been shown to promote anti-proliferative effects on various cancer cell lines. Here we examined the effects of purified eurycomanone, a quassinoid found in Eurycoma longifolia Jack extract, on the expression of selected genes of the A549 lung cancer cells. Eurycomanone inhibited A549 lung cancer cell proliferation in a dose-dependent manner

Pooi-Fong Wong; Wei-Fun Cheong; Meng-Hooi Shu; Chin-Hoe Teh; Kit-Lam Chan; Sazaly AbuBakar

20

Two antigenotoxic chalcone glycosides from Mentha longifolia subsp. longifolia.  

PubMed

Abstract Context: Mentha L. (Labiatae) species (mint) with their flavoring properties have been used in food industries for centuries. Besides they have a great importance in drug development and medicinal applications due to various bioactive compounds of several members of the genus. Objective: The aim of this study was to isolate bioactive compounds with antimutagenic potential by bio-guided fractionation and determine their structures by spectroscopic methods. Materials and methods: The structural elucidation of the isolated compounds was done based on spectroscopic methods, including MALDI-MS, UV, IR, and 2D NMR experiments, and the bio-guided fractionation process was done by using the Ames/Salmonella test system. Henceforth, solely genotoxic and antigenotoxic potential of the new compounds were also confirmed up to 2?µM/plate by using the same test system. Results: Two new chalcone glycosides: (?R)-?,3,2',6'-tetrahydroxy-4-methoxy-4'-O-rutinosyldihydrochalcone and (?R)-?,4,2',6'-tetrahydroxy-4'-O-rutinosyldihydrochalcone, were isolated from Mentha longifolia (L.) Hudson subsp. longifolia, together with known six flavonoid glycosides and one phenolic acid: apigenin-7-O-glucoside, luteolin-7-O-glucoside, apigenin-7-O-rutinoside, luteolin-7-O-rutinoside, apigenin-7-O-glucuronide, luteolin-7-O-glucuronide, rosmarinic acid. According to the antimutagenicity results, both new test compounds significantly inhibited the mutagenic activity of 9-aminoacridine in a dose-dependent manner at the tested concentrations from 0.8 to 2?µM/plate. (?R)-?,4,2',6'-Tetrahydroxy-4'-O-rutinosyldihydrochalcone showed the maximum inhibition rate as 75.94% at 2?µM/plate concentration. Conclusions: This is the first report that two new chalcone glycosides were isolated from Mentha longifolia subsp. longifolia and their antimutagenic potentials by using mutant bacterial tester strains. In conclusion, the two new chalcone glycosides showed a significant antigenotoxic effect on 9-aminoacridine-induced mutagenesis at tested concentrations. PMID:25429992

Guvenalp, Zuhal; Ozbek, Hilal; Karadayi, Mehmet; Gulluce, Medine; Kuruuzum-Uz, Ayse; Salih, Bekir; Demirezer, Omur

2014-11-28

21

Sesquiterpene lactone glycosides from Arnica longifolia.  

PubMed

Flowers of ARNICA LONGIFOLIA were investigated for the occurrence of sesquiterpene lactone glycosides. A mixture containing the two isomeric 11alpha,13-dihydro- and 11beta,13-dihydro-4 H-tomentosin glucosides, previously isolated from A. AMPLEXICAULIS and A. MOLLIS, together with the two isomeric 11alpha,13-dihydro- and 11beta,13-dihydro-4 H-carabrone glucosides were found in A. LONGIFOLIA. All carbon and proton shifts of the glycosides could be assigned by their 2D-COSY and 2D-HETCOR spectra and spectroscopy of their respective aglycones, obtained via enzymatic hydrolysis. PMID:17260246

Passreiter, C M; De Carlo, M; Steigel, A

1999-03-01

22

Isolation of the toxin in Daubentonia longifolia  

E-print Network

THE ISOLATION OF THE TOXIN IN DAUBENTONIA LONGIFOLIA A THESIS SUBMITTED TO THE FACULTY OF THE AGRICULTURAL AND MECHANICAL COLLEGE OF TEXAS IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE BY ASHLEY ROBEY&B. S... ) per one hundred pounds oi' animal end the mi~i~um fatal dose to be 0. 11 lb. ( 1 and 3/4 oz. ) per hundred pounds of animal. They also said that th toxin seemed to be excreted slowly since repeated doses be- low the toxic dose produce death. Dr...

Robey, Ashley

1925-01-01

23

Minor Withanolides of Physalis longifolia: Structure and Cytotoxicity  

E-print Network

In our recent publication on bioactive guided isolation of compounds from Physalis longifolia (Solanaceae) novel anti-proliferative agents withalongolides A (4) and B (5), and their highly cytotoxic analogues, withalongolide A 4,19,27-triacetate (4a...

Zhang, Huaping; Motiwala, Hashim; Samadi, Abbas; Day, Victor; Aubé , Jeffrey; Cohen, Mark; Kindscher, Kelly; Gollapudi, Rao; Timmermann, Barbara

2012-01-01

24

Cytotoxic withanolide constituents of Physalis longifolia.  

PubMed

Fourteen new withanolides, 1-14, named withalongolides A-N, respectively, were isolated from the aerial parts of Physalis longifolia together with eight known compounds (15-22). The structures of compounds 1-14 were elucidated through spectroscopic techniques and chemical methods. In addition, the structures of withanolides 1, 2, 3, and 6 were confirmed by X-ray crystallographic analysis. Using a MTS viability assay, eight withanolides (1, 2, 3, 7, 8, 15, 16, and 19) and four acetylated derivatives (1a, 1b, 2a, and 2b) showed potent cytotoxicity against human head and neck squamous cell carcinoma (JMAR and MDA-1986), melanoma (B16F10 and SKMEL-28), and normal fetal fibroblast (MRC-5) cells with IC?? values in the range between 0.067 and 9.3 ?M. PMID:22098611

Zhang, Huaping; Samadi, Abbas K; Gallagher, Robert J; Araya, Juan J; Tong, Xiaoqin; Day, Victor W; Cohen, Mark S; Kindscher, Kelly; Gollapudi, Rao; Timmermann, Barbara N

2011-12-27

25

Cytotoxic Withanolide Constituents of Physalis longifolia  

PubMed Central

Fourteen new withanolides 1-14, named withalongolides A-N, respectively, were isolated from the aerial parts of Physalis longifolia together with eight known compounds (15-22). The structures of compounds 1-14 were elucidated through spectroscopic techniques and chemical methods. In addition, the structures of withanolides 1, 2, 3, and 6 were confirmed by X-ray crystallographic analysis. Using a MTS viability assays, eight withanolides (1, 2, 3, 7, 8, 15, 16, and 19) and four acetylated derivatives (1a, 1b, 2a, and 2b) showed potent cytotoxicity against human head and neck squamous cell carcinoma (JMAR and MDA-1986), melanoma (B16F10 and SKMEL-28), and normal fetal fibroblast (MRC-5) cells with IC50 values in the range between 0.067 and 9.3 ?M. PMID:22098611

Zhang, Huaping; Samadi, Abbas K.; Gallagher, Robert J.; Araya, Juan J.; Tong, Xiaoqin; Day, Victor W.; Cohen, Mark S.; Kindscher, Kelly; Gollapudi, Rao; Timmermann, Barbara N.

2011-01-01

26

Jack Kerouac Literary Festival  

E-print Network

through the gates will receive a Jack Kerouac Bobblehead. The Bobble- heads are designed to honor "On.m. registration; 12 noon start. Jack Kerouac 5K Road Race Brewery Exchange, 201 Cabot St. For information: www

Massachusetts at Lowell, University of

27

Jack & the Video Camera  

ERIC Educational Resources Information Center

This article narrates how the use of video camera has transformed the life of Jack Williams, a 10-year-old boy from Colorado Springs, Colorado, who has autism. The way autism affected Jack was unique. For the first nine years of his life, Jack remained in his world, alone. Functionally non-verbal and with motor skill problems that affected his…

Charlan, Nathan

2010-01-01

28

Human Keratinocytes Radioprotection with Mentha Longifolia  

NASA Astrophysics Data System (ADS)

Antioxidants are suggested to act as radioprotectors, and dietary supplements based on antiox-idants have been proposed for astronauts involved in long-term space missions. Plant extracts with antioxidant properties may be used in dietetic supplements for astronauts; in fact recent nutritional guidelines suggest that "fruits and vegetables may become as important on space-going vessels as limes were on the sea-going vessels of old". Mint presents a large variety of biological properties, such as antiallergenic, antibacterial, anti-inflammatory, antitumor, an-tiviral, gastrointestinal protective, hepatoprotective, chemopreventive activities, most of which are attributable to its antioxidant activity. The aim of the present study is to evaluate the antioxidant properties and protective bio-efficacy of a phenol enriched Mentha longifolia ex-tract on gamma rays stressed human keratinocytes (NCTC2544). We assessed first the in vitro antioxidant activity (ABTS and DPPH), and then evaluated different stress markers in order to investigate various oxidative stress targets: cell viability (MTT); retained proliferating ca-pability (CA); DNA damage (histone H2AX) and protein damage (HSP70 induction). Results indicate that this Mint extract has a higher antioxidant activity respect to fresh extracts, that could be responsible of its really interesting radio-protective effects.

Rizzo, Angela Maria; Berselli, P.; Zava, S.; Negroni, M.; Corsetto, P.; Montorfano, G.; Bertolotti, A.; Ranza, E.; Ottolenghi, A.; Berra, B.

29

Jumping Jack Math  

NSDL National Science Digital Library

In this math activity, learners prepare jumping jack data to send to officials on the planet Jumpalot. Learners record how many jumping jacks they can do in ten seconds and use their knowledge of time conversions to figure out how many jumping jacks they could complete in a minute all the way to a year. Learners then organize group data and explore mean, median, and mode and the effects extreme values have on these measures. Finally, learners brainstorm the advantages and disadvantages each measure offers. This lesson guide includes questions for learners, assessment options, extensions, and reflection questions.

2012-06-21

30

Antioxidant and antityrosinase proanthocyanidins from Polyalthia longifolia leaves.  

PubMed

In the present study the structure of proanthocyanidins from Polyalthia longifolia leaves was characterized with (13)C nuclear magnetic resonance, high performance liquid chromatography electrospray ionization mass spectrometry, and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry analyses. The results showed that the proanthocyanidins were mixture of homopolymers of B-type procyanidins with degree of polymerization up to 14-mer. Furthermore, the antioxidant activity of the proanthocyanidins was studied through 2,2-diphenyl-1-picrylhydrazyl and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) free-radical scavenging activities, and ferric reducing/antioxidant power assays. In addition, antityrosinase activity of the proanthocyanidins was investigated. The IC50 for 2,2-diphenyl-1-picrylhydrazyl and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) free-radical scavenging activity of the proanthocyanidins were 89.32 ± 12.07 and 76.79 ± 5.88 ?g/mL, respectively; the ferric reducing/antioxidant power value was 710.54 ± 142.82 mg ascorbic acid equivalent/g dry weight. The IC50 for antityrosinase activity was 773.09 ± 1.47 ?g/mL. In conclusion, the proanthocyanidins from P. longifolia leaves exhibited potent antioxidant and antityrosinase activities. This research would provide scientific evidence for the use of proanthocyanidins from P. longifolia leaves as antioxidant and antityrosinase agents. PMID:24863181

Chen, Xiao-Xin; Liang, Ge; Chai, Wei-Ming; Feng, Hui-Ling; Zhou, Han-Tao; Shi, Yan; Chen, Qing-Xi

2014-11-01

31

Jumping Jack Math  

NSDL National Science Digital Library

This lesson plan combines physical activity (jumping jacks) with data collection. The purpose of this activity is to compare and contrast the use of mean, median, and mode as the best measure of central tendency. The lesson plan includes three worksheets, extension questions, and assessment options.

Caitlin LeBlanc Dankanich

2012-01-01

32

Antimicrobial potentials of Mentha longifolia by disc diffusion method.  

PubMed

This study was conducted for the assessment of the antimicrobial activities of different solvents extracted samples from the aerial parts of Mentha longifolia against ten microbial species through the disc diffusion assay using two different concentrations of 1 and 2 mg disc1. All extracts from Mentha longifolia showed different ranges of antimicrobial activities. Butanol and ethyl acetate fractions showed inhibitory activities against all microbial species. Methanol fraction showed inhibitory effects against all the tested microbial species except Salmonella typhi. Salmonella typhi was also not controlled by methanol, petroleum ether and dichloromethane extracted samples. The most susceptible gram positive bacteria was Bacillus atropheus and Bacillus subtilis and were inhibited by all extracts and Staphylococus aureus was least susceptible among gram positive bacteria. Klebsiella pneumoniae was the most susceptible gram negative bacterium and Salmonella typhi was highly resistant among the gram negative bacteria. Erwinia carotovora and Agrobacterium tumefaciene were susceptible to all fractions. All fractions showed antifungal activities against Candida albicans except water extracted samples. PMID:25015464

Bakht, Jehan; Shaheen, Salma; Shafi, Mohammad

2014-07-01

33

Jack Michael's Motivation  

PubMed Central

Among many of Jack Michael's contributions to the field of behavior analysis is his behavioral account of motivation. This paper focuses on the concept of motivating operation (MO) by outlining its development from Skinner's (1938) notion of drive. Conceptually, Michael's term helped us change our focus on how to study motivation by shifting its origins from the organism to the environment. Michael's account also served to stimulate applied research and to better understand behavioral function in clinical practice. PMID:23814362

Miguel, Caio F.

2013-01-01

34

Cytotoxic clerodane diterpenoids from the leaves of Polyalthia longifolia.  

PubMed

The ethanolic extract of Polyalthia longifolia var. pendula was fractionated to get a hexane-soluble residue, which led to the isolation of four clerodane diterpenes: (-)-3?,16?-dihydroxycleroda-4(18),13(14)Z-dien-15,16-olide (1), (-)-3?,16?-dihydroxycleroda-4(18), 13(14)Z-dien-15,16-olide (2), (-)-16?-hydroxycleroda-3,13(14)Z-dien-15,16-olide (3) and (-)-16-oxocleroda-3,13(14)E-dien-15-oic acid (4). Diterpene 1 is a new compound, while 2 is reported for first time from this plant. Both 1 and 2 were tested for their growth inhibitory activity on four cancer cell lines in vitro. IC(50) values suggest that they are effective as cytotoxic agents. PMID:19764003

Sashidhara, Koneni V; Singh, Suriya P; Sarkar, Jayanta; Sinha, Sudhir

2010-11-01

35

Jack London an American Author  

NSDL National Science Digital Library

Objective: Students will evaluate informational text and build background knowledge about the American Author Jack London. Procedures: Click on the links below and read the biographical information about Jack London, the historical time period in which he wrote, and his writing by reading a few excerpts from Call of The Wild, Sea Wolf, and more tales. London is highly demanding on his readers; ...

Ms. S. Anderson

2008-09-10

36

Jack London's Writings  

NSDL National Science Digital Library

Despite the fact that he passed away at the relatively young age of 40, Jack London lived a life that truly lived up to the credo of "rugged individualism". By the time he passed away on November 22, 1916, London had explored the South Pacific, written several important socialist tracts, and authored dozens of short stories, some of which continue to be perennial favorites. This online collection, provided by the Berkeley Digital Library SunSITE project, provides a wealth of material on London, including full-text versions of nearly all of his books, primary documents, and detailed bibliographies and finding aids. The site also provides a biography by Dr. Clarice Stasz of Sonoma State University, a good selection of photographs of London and his family, along with frequently-asked-questions section. Finally, visitors may also want to sign up for the Jack London electronic mailing list, which is intended to allow scholars and the general public to communicate about the author and related subjects.

37

Jacks--A Study of Simple Machines.  

ERIC Educational Resources Information Center

This vocational physics individualized student instructional module on jacks (simple machines used to lift heavy objects) contains student prerequisites and objectives, an introduction, and sections on the ratchet bumper jack, the hydraulic jack, the screw jack, and load limitations. Designed with a laboratory orientation, each section consists of…

Parsons, Ralph

38

Jack Sheaffer Collection  

NSDL National Science Digital Library

Born in 1929, Jack Sheaffer chronicled the explosive growth of Arizona during the better part of the 20th century. He attended Tucson High School, joined the Air Force in 1954, and then started working as a contract photographer for the Arizona Daily Star. Sheaffer was the chief photographer for the paper between 1955 and 1982, and this voluminous collection presents a healthy sampling of his work. Here visitors can make their way through over 10,000 photographs digitized by the University of Arizona Libraries Digital Collections. Visitors can perform a detailed search across the entire collection, but it's also fun to just type in a keyword or two, such as Tucson, roads, or parades. Visitors will note that the subjects covered by Sheaffer are vast, and they include tragic accidents, local beauty pageants, and the Tucson Rodeo. All told, this site offers an amazing portrait of Arizona in the latter half of the 20th century.

39

Minor Withanolides of Physalis longifolia: Structure and Cytotoxicity  

PubMed Central

In our recent publication on bioactive guided isolation of compounds from Physalis longifolia (Solanaceae) novel anti-proliferative agents withalongolides A (4) and B (5), and their highly cytotoxic analogues, withalongolide A 4,19,27-triacetate (4a) and withalongolide B 4,19-diacetate (5a) were elucidated. In this study, the two lead compounds (4, 5) were re-isolated in gram quantities for the purpose of further analogue preparation and in vivo testing that would continue to probe structure–activity relationships. During this process, two additional withanolides, named withalongolides O (1) and P (2), were elucidated. Their structures were determined by spectroscopic techniques with 1 being subsequently confirmed by X-ray crystallographic analysis. Utilizing a MTS [3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium] viability assay, withalongolide O (1) and its 4,7-diaceatate (1a), both containing the functionalities of ?2-1-oxo- in A ring, a 5?,6?-epoxy in B ring, and a lactone ring in the nine-carbon side chain, exhibited potent cytotoxicity against human head and neck squamous cell carcinoma (JMAR and MDA-1986), melanoma (B16F10 and SKMEL-28), and normal fetal lung fibroblast (MRC-5) cells with IC50 values in the range between 0.15 and 2.95 ?M. In addition, the previously reported ? orientation of 7-acetate group in acnistins C and D should be revised to the ? orientation on the basis of NMR data comparison. PMID:23036966

Zhang, Huaping; Motiwala, Hashim; Samadi, Abbas; Day, Victor; Aubé, Jeffrey; Cohen, Mark; Kindscher, Kelly; Gollapudi, Rao; Timmermann, Barbara

2013-01-01

40

Minor withanolides of Physalis longifolia: structure and cytotoxicity.  

PubMed

In our recent publication on bioactive guided isolation of compounds from Physalis longifolia (Solanaceae) novel anti-proliferative agents withalongolides A (4) and B (5), and their highly cytotoxic analogues, withalongolide A 4,19,27-triacetate (4a) and withalongolide B 4,19-diacetate (5a) were elucidated. In this study, the two lead compounds (4, 5) were re-isolated in gram quantities for the purpose of further analogue preparation and in vivo testing that would continue to probe structure-activity relationships. During this process, two additional withanolides, named withalongolides O (1) and P (2), were elucidated. Their structures were determined by spectroscopic techniques with 1 being subsequently confirmed by X-ray crystallographic analysis. Utilizing a MTS [3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium] viability assay, withalongolide O (1) and its 4,7-diaceatate (1a), both containing the functionalities of ?(2)-1-oxo- in A ring, a 5?,6?-epoxy in B ring, and a lactone ring in the nine-carbon side chain, exhibited potent cytotoxicity against human head and neck squamous cell carcinoma (JMAR and MDA-1986), melanoma (B16F10 and SKMEL-28), and normal fetal lung fibroblast (MRC-5) cells with IC(50) values in the range between 0.15 and 2.95 µM. In addition, the previously reported ? orientation of 7-acetate group in acnistins C and D should be revised to the ? orientation on the basis of NMR data comparison. PMID:23036966

Zhang, Huaping; Motiwala, Hashim; Samadi, Abbas; Day, Victor; Aubé, Jeffrey; Cohen, Mark; Kindscher, Kelly; Gollapudi, Rao; Timmermann, Barbara

2012-01-01

41

Pharmacological and therapeutic effects of Mentha Longifolia L. and its main constituent, menthol.  

PubMed

Mentha longifolia (wild mint) is a popular folk remedy. Some parts of this plant have been used in traditional medicine of Iran and other countries. Many studies have shown various pharmacological and therapeutic effects of the plant. Our aim in preparing this study was to review the traditional uses of M. longifolia together with the pharmacological and therapeutic effects of its entire extract and major compounds. Mentha longifolia is an herb with a wide range of pharmacological properties such as antimicrobial, gastrointestinal, and nervous system effects. Pulegone is the main compound of the plant responsible for most of its pharmacological effects followed by menthone, isomenthone, menthol, 1, 8-cineole, borneol, and piperitenone. Moreover, the plant may dose-dependently exert toxic effects in different systems of the body. Based on the review of various studies, it can be concluded that M. longifolia is a potential natural source for the development of new drugs. However, further studies are required to determine the precise quality and safety of the plant to be used by clinicians. PMID:25284948

Mikaili, Peyman; Mojaverrostami, Sina; Moloudizargari, Milad; Aghajanshakeri, Shahin

2013-10-01

42

Antibacterial potentiality and phytochemical analysis of mature leaves of Polyalthia longifolia (Magnoliales: Annonaceae)  

Microsoft Academic Search

The present study evaluated the antibacterial potentiality of hot aqueous and methanol solvent extract of mature leaves of Polyalthia longifolia (Sonn.) Thwaites (Magnoliales: Annonaceae) against six reference bacteria viz. Staphylococcus aureus MTCC 2940, Bacillus subtilis MTCC 441, Escherichia coli MTCC 739, Klebsiella pneumoniae MTCC 530, Proteus vulgaris MTCC 426 and Enterobacter aerogenes MTCC 111. A sensitivity test performed with commercially

Anupam Ghosh; Bidus Kanti Das; Soroj Kumar Chatterjee; Goutam Chandra

2008-01-01

43

Cephalanthera longifolia (Neottieae, Orchidaceae) is mixotrophic: a comparative study between green and nonphotosynthetic individuals  

Microsoft Academic Search

We investigated an Estonian population of the orchid Cephalanthera longifolia (L.) Fritsch. (Neottieae tribe), which harbours green and achlorophyllous individuals (= albinos), to understand albino survival and compare mycorrhizal associates, development, and nutrition of the two phenotypes. Albinos never changed phenotype over 14 years and had de- velopment similar to green individuals; their chlorophyll content was reduced by 99.4%, making

Jean-Claude Abadie; Ülle Püttsepp; Gerhard Gebauer; Antonella Faccio; Paola Bonfante; Marc-André Selosse

2006-01-01

44

Chemical Composition and Antifungal Activity of Arnica longifolia, Aster hesperius and Chrysothamnus nauseosus Essential Oils  

Technology Transfer Automated Retrieval System (TEKTRAN)

Essential oils from three different Asteraceae obtained by hydrodistillation of aerial parts were analyzed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC/MS). Main compounds obtained from each taxon were found as follows: Arnica longifolia: carvacrol 37.3%, a-bisabolol 8.2%...

45

Pharmacological and therapeutic effects of Mentha Longifolia L. and its main constituent, menthol  

PubMed Central

Mentha longifolia (wild mint) is a popular folk remedy. Some parts of this plant have been used in traditional medicine of Iran and other countries. Many studies have shown various pharmacological and therapeutic effects of the plant. Our aim in preparing this study was to review the traditional uses of M. longifolia together with the pharmacological and therapeutic effects of its entire extract and major compounds. Mentha longifolia is an herb with a wide range of pharmacological properties such as antimicrobial, gastrointestinal, and nervous system effects. Pulegone is the main compound of the plant responsible for most of its pharmacological effects followed by menthone, isomenthone, menthol, 1, 8-cineole, borneol, and piperitenone. Moreover, the plant may dose-dependently exert toxic effects in different systems of the body. Based on the review of various studies, it can be concluded that M. longifolia is a potential natural source for the development of new drugs. However, further studies are required to determine the precise quality and safety of the plant to be used by clinicians. PMID:25284948

Mikaili, Peyman; Mojaverrostami, Sina; Moloudizargari, Milad; Aghajanshakeri, Shahin

2013-01-01

46

Production and description of interspecific hybrids between Poa pratensis and P. Longifolia  

Microsoft Academic Search

Eight interspecific hybrids between P. pratensis and P. longifolia were obtained; six were fully fertile and sexual. Canonical analysis and generalised distances calculated using data from a spaced plant field trial were used together with somatic chromosome counts to confirm hybrid origin. Phenotypic uniformity of third generation hybrid families was assessed; 22.5% of the families were uniform and probably apomictic

Cynthia J. Williamson; Patricia J. Watson

1980-01-01

47

Composition of a Carvone Chemotype of Mentha longifolia (L.) Huds. from Iran  

Microsoft Academic Search

An essential oil composition of Mentha longifolia (L.) Huds. was analyzed by GC and GC\\/MS. Twenty-three components were identified representing 99.3% of the oil. Carvone (61.8%) and limonene (19.4%) were the most abundant constituents.

Aazam Monfared; Mohammad Reza Nabid; Abdolhossein Rustaiyan

2002-01-01

48

Molecular Evolution at the Self-Incompatibility Locus of Physalis longifolia (Solanaceae)  

Microsoft Academic Search

The simple codominant expression of the alleles at the self-incompatibility locus (S) of Solanaceae and their extraordinary spectrum of sequence diversity present an ideal case for understanding the molecular forces that shape the sequence polymorphism of genes involved in recognition reactions. Here, with unprecedented conspecific sequences of 33 Physalis longifolia S alleles, including 27 of their single introns, the tempo-spatial

Yingqing Lu

2002-01-01

49

14 CFR 23.507 - Jacking loads.  

Code of Federal Regulations, 2010 CFR

...AIRCRAFT AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER...load factors for landing gear jacking points at a three-point attitude and for primary flight structure jacking points in the level attitude: (1)...

2010-01-01

50

65th birthday Jack Steinberger  

SciTech Connect

Laudatio pour Jack Steinberger né le 25 mai 1921, à l'occasion de son 65me anniversaire et sa retraite officielle, pour sa précieuse collaboration au Cern. Néanmoins son principal activité continuera comme avant dans sa recherche au Cern. Plusieurs orateurs prennent la parole (p.ex. E.Picasso) pour le féliciter et lui rendre hommage

None

2007-12-04

51

65th birthday Jack Steinberger  

ScienceCinema

Laudatio pour Jack Steinberger né le 25 mai 1921, à l'occasion de son 65me anniversaire et sa retraite officielle, pour sa précieuse collaboration au Cern. Néanmoins son principal activité continuera comme avant dans sa recherche au Cern. Plusieurs orateurs prennent la parole (p.ex. E.Picasso) pour le féliciter et lui rendre hommage

None

2011-04-25

52

Analysis of Major Withanolides in Physalis longifolia Nutt. by HPLC-PDA.  

PubMed

An analytical method based on high-performance liquid chromatography-photodiode array detection was developed for the simultaneous determination of three anti-proliferative withanolides [withalongolide A ( 1: ), withaferin A ( 2: ) and withalongolide B ( 3: )] present in the aboveground biomass of the long-leaf groundcherry, Physalis longifolia. This method was achieved by biomass extraction followed by chromatographic separation on C18 column eluted with a gradient acetonitrile-water mobile phase. Calibration curves produced satisfactory linear regression (r(2) > 0.9995) for each examined sample. The method was also validated for accuracy, precision and limits of detection and quantification. Such an approach is applicable for the rapid detection and quantitative assessment of withanolides in various P. longifolia accessions. PMID:25466231

Cao, Cong-Mei; Kindscher, Kelly; Gallagher, Robert J; Zhang, Huaping; Timmermann, Barbara N

2014-12-01

53

Jack Dongarra University of Tennessee  

E-print Network

1/26/11 1 Jack Dongarra University of Tennessee Oak Ridge National Laboratory University of Tennessee Kraken / Cray Cray XT5 sixCore 2.6 GHz USA 98,928 .831 81 3.09 269 9 Forschungszentrum Juelich of Tennessee Kraken / Cray Cray XT5 sixCore 2.6 GHz USA 98,928 .831 81 3.09 269 9 Forschungszentrum Juelich

54

The World of Jack London  

NSDL National Science Digital Library

Jack London's life included trips to the Yukon, a front-row seat at the San Francisco Earthquake of 1906 and many journeys aboard his beloved sailing vessel, the Snark. During his short life, London found time to write over a dozen novels, numerous short stories, and hundreds of articles on socialism and other weighty matters of his day. Later, he would also become the hero of another literary "Jack", who happened to enjoy wandering on the road and in various subterranean locales. Maintained by Dave Hartzell, this site is a virtual cornucopia of all things Jack London, including full-text version of his novels, rare articles penned by London, and copious amounts of information about his family and his ranch in the Sonoma Valley. Visitors can also look over a number of scholarly works related to London, including a complete bibliography of his poetry and the first English-language translation of Dr. Vil Bykov's two volume biography of London. Finally, visitors should not depart the site without taking a look at London's first published story, "Two Gold Bricks", which is also available here.

55

JACK LONDON Jack London epitomized the life-long learner. His own education was characterized by  

E-print Network

JACK LONDON 1876-1916 Jack London epitomized the life-long learner. His own education was characterized by innovative and non-traditional experiences. London's primary devotion, however and encourage innovative, educational programs. The Jack London Award for Educational Innovation is given

Ravikumar, B.

56

John B. "Jack" Townshend (1927-2012)  

USGS Publications Warehouse

Jack Townshend, geophysicist and dedicated public servant, died on 13 August 2012 in Fairbanks, Alaska. He was 85. Jack's career with the federal government, most of it with the national magnetic observatory program, spanned more than six solar cycles of time, and he retired only days before his death. The duration of Jack's career encompassed an important period in the history of the advancement of our understanding of the Earth. Jack's career of contributions, his life, and his personality are worthy of retrospective celebration.

Love, Jeffrey J.; Finn, Carol A.

2012-01-01

57

John B. “Jack” Townshend (1927-2012)  

NASA Astrophysics Data System (ADS)

Jack Townshend, geophysicist and dedicated public servant, died on 13 August 2012 in Fairbanks, Alaska. He was 85. Jack's career with the federal government, most of it with the national magnetic observatory program, spanned more than six solar cycles of time, and he retired only days before his death. The duration of Jack's career encompassed an important period in the history of the advancement of our understanding of the Earth. Jack's career of contributions, his life, and his personality are worthy of retrospective celebration.

Love, Jeffrey J.; Finn, Carol A.

2012-12-01

58

A note on the Goodman Jack  

USGS Publications Warehouse

A Note on the Goodman Jack: Reconnaissance experiments, performed to evaluate the practical utility of the hard-rock variety of the Goodman Jack, reveal that the Hustrulid-T* correction adequately reconciles the discrepancy between the measured and true deformation modulus of the rock mass in the range of 30 to 50 gigapascals. ?? 1982 Springer-Verlag.

Swolfs, H.S.; Kibler, J.D.

1982-01-01

59

The acclimation potential of Acacia longifolia to water stress: implications for invasiveness.  

PubMed

The ability of an invasive species to establish and spread to new areas may depend on its ability to tolerate a broad range of environmental conditions. Due to climate change, increasing occurrences of extreme events such as droughts are expected in the Mediterranean region and invasive species may expand if they cope with water stress. Limited information is available on the responses of Acacia longifolia, one of the most aggressive plant species in Portuguese coastal sand dune ecosystems, to prolonged water stress. In this study, we exposed A. longifolia plants from two distinct populations, one from the wet (northern) and another from the dry (southern) climate regions of Portugal, to drought conditions, and monitored morphological, physiological and biochemical responses. One-month-old seedlings were submitted to three different water treatments which involved watering twice a week, every 7 days and every 10 days, respectively, for three months, under controlled conditions. Overall, the progressive drought stress significantly affected most of the growth parameters considered, except the root:shoot ratio. Water stress also increased the uptake of ions (Ca²?, Mg²?, K? and Na?) and N concentration. On the contrary, the C/N ratio decreased under water stress conditions. Isotopic analysis did not reveal significant differences in ?¹³C with water treatments but the same pattern was not observed in ?¹?N values. Compared with the wet climate population, the dry climate population showed somewhat differing responses to water stress, indicating a genetic difference between populations. These results provide insights into limitations and opportunities for establishment of A. longifolia in a drought-prone scenario. PMID:23017901

Morais, Maria Cristina; Freitas, Helena

2012-11-01

60

Capsicum Annuum L. Lil' Pumpkin and Pepper Jack  

Technology Transfer Automated Retrieval System (TEKTRAN)

The USDA, ARS announces the release of two new pepper cultivars 05C37-3 (trademarked as Lil’ Pumpkin) and 05C69-12 (trademarked as Pepper Jack). Lil’ Pumpkin and Pepper Jack are intended for ornamental applications. Lil’ Pumpkin’s unique black foliage and orange pumpkin-like fruit and Pepper Jack’s ...

61

Cytogeography of essential oil chemotypes of Eremophila longifolia F. Muell (Scrophulariaceae).  

PubMed

Previous studies have demonstrated that the widely distributed desert plant Eremophila longifolia has at least six geographically defined essential oil chemotypes. The focus of the present study is to extend and enhance information concerning known chemotypes and to investigate the involvement of cell nuclei ploidy in this variation. Forty field collected specimens of E. longifolia were taken from most of the mainland states of Australia then subjected to hydrodistillation to produce essential oils, which were then chemically characterised. Ploidy was determined using relative fluorescence of cell nuclei stained with propidium iodide, measured in a flow cytometer. Using principal component analysis (PCA), at least three essential oil chemotypes, in addition to the six already described, were identified in the present study. Previously described high yielding essential oil chemotypes were also characterised in terms of diploidy. For the first time diploid populations were identified in New South Wales, correlating with high yielding isomenthone/menthone and karahanaenone chemotypes. Furthermore, the separate diploid population previously described from Western Australia was demonstrated to be the safrole/methyl eugenol type, which is restricted to a small geographic range in far north-west Western Australia (Murchison District). All other chemotypes were shown to be tetraploid, including apparently randomly emerging individuals, representative of chemotypes producing low yields of isomenthone/menthone and karahanaenone similar in composition to the high yielding diploid types. PMID:24874947

Sadgrove, Nicholas John; Jones, Graham Lloyd

2014-09-01

62

Solicitation of HPLC and HPTLC Techniques for Determination of Rutin from Polyalthia longifolia Thwaites  

PubMed Central

Background: Polyalthia longifolia Thwaites is an important traditional plant in India. Rutin, an active constituent has been reported to possess good amount of pharmacological as well as therapeutic potential. Objective: The aim of the present study was to find out by analytical techniques how much percentage of rutin is present in the plant leaves’ ethanolic extract by analytical techniques. Materials and Methods: Shade dried leaves of Polyalthia longifolia were subjected to cold ethanolic extraction followed by monitoring the isolated rutin high-pressure liquid chromatography (HPLC) and high performance thin layer chromatography (HPTLC) after carrying out preliminary phytochemical screening. Results: Extraction yield was found to be 13.94% w/w. Phytochemical screening of the extract showed the presence of flavonoids, steroids, diterpenoids, alkaloids, saponins, tannins and phenolic compounds and mucilage. From the Rf value, the ethanolic extract was found to be having constituent identical to rutin. By HPTLC and HPLC the amount of rutin was found to be 11.60% w/w and 4.03% w/v, respectively. Conclusion: The active constituent isolated was found to be equal to rutin. PMID:25002804

Doshi, Gaurav Mahesh; Zine, Sandeep Prabhakar; Chaskar, Pratip Kashinath; Une, Hemant Devidas

2014-01-01

63

Molecular evolution at the self-incompatibility locus of Physalis longifolia (Solanaceae).  

PubMed

The simple codominant expression of the alleles at the self-incompatibility locus ( S) of Solanaceae and their extraordinary spectrum of sequence diversity present an ideal case for understanding the molecular forces that shape the sequence polymorphism of genes involved in recognition reactions. Here, with unprecedented conspecific sequences of 33 Physalis longifolia S alleles, including 27 of their single introns, the tempo-spatial nucleotide substitution patterns were first detailed for the S locus and analyzed in genealogical time scales. Three major genealogical clades of the 33 P. longifolia S alleles were used to divide the genealogical time into the within-clade and the between-clade periods. During the within-clade period, the average nonsynonymous substitution rate was 50% higher than the intron substitution rate but the opposite trend emerged for the between-clade period. A new and simple method developed here was utilized to estimate the selection intensity in the coding regions. The magnitudes and the distribution of these estimates, in conjunction with the spatial substitution pattern among closely related S sequences, revealed an initial short-term action of strong positive selection and a continuous but weaker action of negative selection brought by functional/structural constraints on the S alleles. The two modes of selection can significantly modify the branch lengths of an S genealogy and may be ubiquitous to recognition systems. PMID:12029360

Lu, Yingqing

2002-06-01

64

Aircraft Maintenance Jacking Problem via Optimization  

E-print Network

gears or by the main jacks positioned near the landing gears. Thus one relies on using a certain number or part assembling. This is generally not the case when the aircraft is only supported by its landing

Mongeau, Marcel

65

Evaluation of the Genotoxic Potential against H2O2-Radical-Mediated DNA Damage and Acute Oral Toxicity of Standardized Extract of Polyalthia longifolia Leaf  

PubMed Central

Medicinal plants have been used in medicoculturally diverse countries around the world, where it is a part of a time-honoured tradition that is respected even today. Polyalthia longifolia leaf extract has been previously reported as an efficient antioxidant in vitro. Hence, the genotoxic effects of P. longifolia leaf were investigated by using plasmid relation, comet, and Allium cepa assay. In the presence of???OH radicals, the DNA in supercoil was start nicked into open circular form, which is the product of the single-stranded cleavage of supercoil DNA and quantified as fragmented separate bands on agarose gel in plasmid relation assay. In the plasmid relation and comet assay, the P. longifolia leaf extract exhibited strong inhibitory effects against H2O2-mediated DNA damage. A dose-dependent increase of chromosome aberrations was also observed in the Allium cepa assay. The abnormalities scored were stickiness, c-mitosis, bridges, and vagrant chromosomes. Micronucleated cells were also observed at the interphase. The results of Allium cepa assay confirmed that the methanol extracts of P. longifolia exerted no significant genotoxic or mitodepressive effects at 100??g/mL. Thus, this study demonstrated that P. longifolia leaf extract has a beneficial effect against oxidative DNA damage. This experiment is the first report for the protective effect of P. longifolia on DNA damage-induced by hydroxyl radicals. Additionally in acute oral toxicity study, female rats were treated at 5000?mg/kg body weight of P. longifolia leaf extract and observed for signs of toxicity for 14 days. P. longifolia leaf extract did not produce any treatment-related toxic effects in rats. PMID:23878610

Jothy, Subramanion L.; Chen, Yeng; Kanwar, Jagat R.; Sasidharan, Sreenivasan

2013-01-01

66

Utilization of an unpredictable food source by Melanterius ventralis , a seed-feeding biological control agent of Acacia longifolia in South Africa  

Microsoft Academic Search

A seed-feeding weevil, Melanterius ventralis (Coleoptera: Curculionidae), has been introduced into South Africa to supplement a gall wasp,Trichilogaster acaciaelongifoliae (Hymenoptera: Pteromalidae), in the biological control programme against an alien invasive tree, Acacia longifolia (Mimosaceae), from Australia. The gall wasp debilitates most of the flower buds on A. longifolia andreduces seed-set by >95%. The intended rolefor M. ventralis is to destroy

D. Donnelly; J. H. Hoffmann

2004-01-01

67

Identification of genome constitutions in Begonia×chungii and its putative parents, B. longifolia and B. palmata, by genomic in situ hybridization (GISH).  

PubMed

Based mainly on morphological features and geographical distribution, Begonia×chungii (2n=22) was recently reported as a natural hybrid between B. longifolia and B. palmata in Taiwan. This study aims to confirm the hybridity of B.×chungii and to sort out the genome constitutions of its putative parents, using genomic in situ hybridization (GISH). Genomic DNAs of both parental species were used as probes for B.×chungii and the experimental F(1) hybrid, B. palmata×B. longifolia, in GISH analyses. Bicolor-GISH analyses in B.×chungii showed that the 22 chromosomes consisted of six chromosomes hybridized with a probe derived from the B. palmata genome, six with another probe from the B. longifolia genome and the remaining ten with both genomes overlapped. Meanwhile, bicolor-GISH in B. palmata×B. longifolia showed a remarkable similarity to that of B.×chungii. The reciprocal GISH results between B. longifolia and B. palmata were comparable. Our GISH analyses confirmed that B.×chungii is a natural F(1) hybrid between B. longifolia and B. palmata. Genomes of the parental species were shown to be partially homologous, suggesting a derived common ancestral genome in them. PMID:22325876

Kono, Yoshiko; Chung, Mei-Chu; Peng, Ching-I

2012-04-01

68

Antioxidant Activity and Volatile and Phenolic Profiles of Essential Oil and Different Extracts of Wild Mint (Mentha longifolia) from the Pakistani Flora  

PubMed Central

The antioxidant activity and free radical scavenging capacity of the essential oil and three different extracts of wildly grown Mentha longifolia (M. longifolia) were studied. The essential oil from M. longifolia aerial parts was isolated by hydrodistillation technique using Clevenger-type apparatus. The extracts were prepared with three solvents of different polarity (n-hexane, dichloromethane, and methanol) using Soxhlet extractor. Maximum extract yield was obtained with methanol (12.6?g/100?g) while the minimum with dichloromethane (3.50?g/100?g). The essential oil content was found to be 1.07?g/100?g. A total of 19 constituents were identified in the M. longifolia oil using GC/MS. The main components detected were piperitenone oxide, piperitenone, germacrene D, borneol, and ?-caryophyllene. The total phenolics (TP) and total flavonoids (TF) contents of the methanol extract of M. longifolia were found to be significantly higher than dichloromethane and hexane extracts. The dichloromethane and methanol extracts exhibited excellent antioxidant activity as assessed by 2,2?-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging ability, bleaching ?-carotene, and inhibition of linoleic acid peroxidation assays. The essential oil and hexane extract showed comparatively weaker antioxidant and free radical scavenging activities. The results of the study have validated the medicinal and antioxidant potential of M. longifolia essential oil and extracts. PMID:24224115

Iqbal, Tahseen; Chatha, Shahzad Ali Shahid; Naqvi, Syed Ali Raza; Bokhari, Tanveer Hussain

2013-01-01

69

Isolation and identification of antimicrobial compound from Mentha longifolia L. leaves grown wild in Iraq  

PubMed Central

Background Mentha longifolia L. (Lamiaceae) leaves have been traditionally implemented in the treatment of minor sore throat and minor mouth or throat irritation by the indigenous people of Iraq, although the compounds responsible for the medicinal properties have not been identified. In the present study, an antimicrobial compound was isolated and characterized, and its biological activity was assessed. Methods The compound was isolated and characterized from the extracted essential oil using different spectral techniques: TLC, FTIR spectra and HPLC. Antimicrobial activity of the compound was assessed using both disc diffusion and microdilution method in 96 multi-well microtiter plates. Results A known compound was isolated from the essential oil of the plant and was identified as (-) menthol. The isolated compound was investigated for its antimicrobial activity against seven selected pathogenic and non-pathogenic microorganisms: Staphylococcus aureus, Streptococcus mutans, Streptococcus faecalis, Streptococcus pyogenis, Lactobacillus acidophilus, Pseudomonas aeruginosa and the yeast Candida albicans. Menthol at different concentrations (1:1, 1:5, 1:10, 1:20) was active against all tested bacteria except for P. aeruginosa, and the highest inhibitory effect was observed against S. mutans (zone of inhibition: 25.3 mm) using the disc diffusion method. Minimal inhibitory concentration MIC values ranged from 15.6–125.0 ?g/ml, and the most promising results were observed against S. aureus and S. mutans (MIC 15.6 ?g/ml) while, S. faecalis, S. pyogenis and L. acidophilus ranked next (MIC 31.2 ?g/ml). Furthermore, menthol achieved considerable antifungal activity against the yeast C. albicans (zone of inhibition range: 7.1–18.5 mm; MIC: 125.0). Conclusion The isolation of an antimicrobial compound from M. longifolia leaves validates the use of this plant in the treatment of minor sore throat and minor mouth or throat irritation. PMID:19523224

Al-Bayati, Firas A

2009-01-01

70

Resource and pollen limitation: plant size-dependent reproductive patterns in Physalis longifolia.  

PubMed

The effect of pollen addition and reduction on the fruit and seed production of ground cherry (Physalis longifolia) plants was examined experimentally in the field over an entire flowering season. Pollen levels were manipulated for entire plants by augmenting natural pollination with hand-pollinations and reducing natural pollination by taping half of the flowers closed. These manipulations make it possible to determine if plants are simultaneously resource and pollen limited, a condition that suggests the plant is maximizing seed production given the resources available for female reproduction. Effects of pollen manipulation were dependent on the size of the plant. Large plants responded to reduced pollination by increasing flower production and the number of seeds per fruit; as a result, total seed production did not differ from that of large control plants. In contrast, small plants showed no change in response to reduced pollination, yet seed production did not differ significantly from that of controls, as seed production in both groups was low. Large hand-pollinated plants did not differ significantly from large control plants in any components of yield. In contrast, small hand-pollinated plants had significantly higher percentage fruit set and produced significantly more fruit and seeds than did small control plants. Differences in seed production reflected different proportions of plants that set some rather than no fruit. This may result from low pollinator visitation rates to small plants with small floral displays. Experimental results for large plants are only consistent with the hypothesis that large plants are simultaneously resource and pollen limited. To the extent that there is a trade-off between flower production and seed provisioning, large P. longifolia plants are allocating resources so as to maximize maternal seed production. In contrast, small plants are only pollen limited. PMID:19426083

Lawrence, W S

1993-02-01

71

Numerical Linear Algebra Algorithms and Software Jack J. Dongarra  

E-print Network

Numerical Linear Algebra Algorithms and Software Jack J. Dongarra Victor Eijkhout z Department Linear Algebra Algorithms and Software Jack J. Dongarra Victor Eijkhout 1 Introduction The increasing computation, including algorithm research and software development in numerical linear algebra. Linear algebra

Dongarra, Jack

72

Standardized Numerical Linear Algebra Software Jack J. Dongarra  

E-print Network

Standardized Numerical Linear Algebra Software Jack J. Dongarra Victor Eijkhout z Department; Standardized Numerical Linear Algebra Software Jack J. Dongarra Victor Eijkhout 1 Introduction The increasing computation, including algorithm research and software development in numerical linear algebra. Linear algebra

Dongarra, Jack

73

Some physical and chemical indices of the Union Jack lattice  

NASA Astrophysics Data System (ADS)

The Union Jack lattice is the dual lattice of the 4.8.8 lattice. The quantum spin model with frustration and the Ising model on the Union Jack lattice have been studied extensively by physicists. In this paper, we derive the spectrum and Laplacian spectrum of the Union Jack lattice with toroidal boundary condition. As applications, we obtain the formulae of the number of spanning trees, the energy, and the Kirchhoff index of the Union Jack lattice with toroidal boundary condition.

Li, Shuli; Yan, Weigen; Tian, Tao

2015-02-01

74

STARVATIONINDUCED MORTALITY OF YOUNG SEACAUGHT JACK MACKEREL, TRACHURUS SYMMETRICUS,  

E-print Network

STARVATION·INDUCED MORTALITY OF YOUNG SEA·CAUGHT JACK MACKEREL, TRACHURUS SYMMETRICUS, DETERMINED WITH HISmWGICAL AND MORPHOWGICAL METHODS GAIL H. 1'HEILACKER' ABSTRACf Young jack mackerel, Trackurll8 8!f for sea-caught jack mackerel were determined by using histological and mor· phological criteria

75

JACK MACKEREL EGGS PACIFIC COAST, 1951-5  

E-print Network

JACK MACKEREL EGGS PACIFIC COAST, 1951-5 SPECIAL SCIENTIFIC REPORT- FISHERIES No. 263 UNITED STATES Report--Fisheries No. 263 Washington, D. C, July 1958 #12;JACK MACKEREL EGGS, PACIFIC COAST, 1951-54 By David A. Farris CONTENTS Page Area covered 2 Methods of sampling 2 The stages of jack mackerel egg

76

Quercetin and quercetin 3-O-glycosides from Bauhinia longifolia (Bong.) Steud. show anti-Mayaro virus activity  

PubMed Central

Background The arthropod-borne Mayaro virus (MAYV) causes ‘Mayaro fever’, a disease of medical significance, primarily affecting individuals in permanent contact with forested areas in tropical South America. Recently, MAYV has attracted attention due to its likely urbanization. Currently, there are no licensed drugs against most mosquito-transmitted viruses. Here, we investigated the in vitro anti-MAYV activity of the flavonoids quercetin and its derivatives from the Brazilian shrub Bauhinia longifolia (Bong.) Steud. Methods Flavonoids were purified by chromatographic fractionation from leaf extracts of B. longifolia and chemically identified as quercetin and quercetin glycosides using spectroscopic techniques. Cytotoxicity of purified flavonoids and of EtOAc- and n-BuOH-containing flavonoid mixtures was measured by the dye-uptake assay while their antiviral activity was evaluated by a virus yield inhibition assay. Results The following flavonoids were purified from B. longifolia leaves: non-glycosylated quercetin and its glycosides guaijaverin, quercitrin, isoquercitrin, and hyperin. EtOAc and n-BuOH fractions containing these flavonoids demonstrated the highest antiviral activity of all tested substances, while quercetin had the highest antiviral activity amongst purified flavonoids. Quercetin, EtOAc, or n-BuOH fractions inhibited MAYV production by more than 90% at 25 ?g/mL, displaying a stronger antiviral effect than the licensed antiviral ribavirin. A mixture of the isomers isoquercitrin and hyperin had a modest antiviral effect (IC90?=?104.9), while guaijaverin and quercitrin did not show significant antiviral activity. Conclusions B. longifolia is a good source of flavonoids with anti-Mayaro virus activity. This is the first report of the activity of quercetin and its derivatives against an alphavirus. PMID:24678592

2014-01-01

77

From Jack polynomials to minimal model spectra  

NASA Astrophysics Data System (ADS)

In this note, a deep connection between free field realizations of conformal field theories and symmetric polynomials is presented. We give a brief introduction into the necessary prerequisites of both free field realizations and symmetric polynomials, in particular Jack symmetric polynomials. Then we combine these two fields to classify the irreducible representations of the minimal model vertex operator algebras as an illuminating example of the power of these methods. While these results on the representation theory of the minimal models are all known, this note exploits the full power of Jack polynomials to present significant simplifications of the original proofs in the literature.

Ridout, David; Wood, Simon

2015-01-01

78

Phenolic content, antioxidant and astroprotective response to oxidative stress of ethanolic extracts of Mentha longifolia from Sinai.  

PubMed

The aerial parts ofMentha longifolia L. are used as herbal remedies for curing different diseases through traditional Bedouin medicine. The antioxidant activity of the ethanolic extracts of M longifolia was investigated measuring peroxyl radical-scavenging activity by ORAC assay, with Trolox (a water-soluble analogue of ?-tocopherol) employed as reference compound. In addition, the total content of phenolic compounds estimated by the Folin-Ciocalteau method and the identification of the polyphenols using high-performance liquid chromatography coupled with mass spectrometry (HPLC-MS) have been performed. Furthermore, the effect of these extracts on cell viability and intracellular ROS production was assayed using the U373-MG human astrocytoma cell line in a H2O2-induced oxidative stress model. Results showed that the major type of polyphenols found were benzoic acids, cinnamic acids, flavones and flavanones. The total phenolic content was 37.7 mg gallic acid/g sample and the ORAC value was 1.355 .mol TE/mg sample. The data obtained in cellular assays demonstrated that these ethanolic extracts protected H2O2-induced astrocyte damage by increasing cell viability and inhibiting production of intracellular ROS. These results suggest that the investigated extracts obtained from the aerial parts of M longifolia have antioxidant potential related to their phenol content which have important beneficial health effects, especially in those disease associated with ROS. PMID:25522540

Eissa, Tarek F; González-Burgos, Elena; Carretero, M Emilia; Gómez-Serranillos, M Pilar

2014-10-01

79

New jacking system resolves dynamic forces in 400-ft jack up  

SciTech Connect

This article describes the design and operation of Trident IX a successfully applied jack up system. A summary of Trident IX's two years of operation in the Arabian Gulf and offshore West Africa is presented. The system is compared to conventional jacking systems in terms of design, operation, costs and safety. Dynamic forces at 400 ft. water depths are summarized, and design of the legs to withstand these dynamic forces and accomodate the new system are explained. Features are listed.

Chevallier, J.; Turner, L.

1984-08-27

80

Causes of mortality in young jack mackerel  

Microsoft Academic Search

Field and laboratory experiments were conducted with the purpose of partitioning jack mackerel Trachurus symmetricus larval mortality into portions due to starvation and to predation. Field collections were made to determine larval condition, growth, net retention and production; laboratory experiments were conducted to determine growth and body shrinkage due to preservation treatment. Age-specific starvation and total mortality rates were estimated

Roger P. Hewitt; Gail H. Theilacker; Nancy C. H. Lo

1985-01-01

81

Ramond singular vectors and Jack superpolynomials  

NASA Astrophysics Data System (ADS)

The explicit formula for the superconformal singular vectors in the Neveu-Schwarz sector has been obtained recently, via its symmetric polynomial representation, as a sum of Jack superpolynomials. Here we present the analogous, but slightly more complicated, closed-form expression for the Ramond singular vectors.

Alarie-Vézina, Ludovic; Desrosiers, Patrick; Mathieu, Pierre

2014-01-01

82

High Performance Computing Technologies Jack Dongarra  

E-print Network

1 High Performance Computing Technologies Jack Dongarra University of Tennessee Oak Ridge National ffl Performance Evaluation -- Linpack Benchmark, Top500 -- ParkBench 3 Computational Science ffl HPC -- noise/vibrational optimization -- traffic simulation ffl Main gains: -- reduced time to market of new

Dongarra, Jack

83

High Performance Computing Technologies Jack Dongarra  

E-print Network

1 High Performance Computing Technologies Jack Dongarra University of Tennessee Oak Ridge National Benchmark, Top500 ParkBench 3 Computational Science HPC o ered a new way to do science: Experiment Theory: aerodynamics similar to aerospace industry crash simulation metal sheet forming noise vibrational optimization

Dongarra, Jack

84

Jack Michael's Motivation  

ERIC Educational Resources Information Center

Among many of Jack Michael's contributions to the field of behavior analysis is his behavioral account of motivation. This paper focuses on the concept of "motivating operation" (MO) by outlining its development from Skinner's (1938) notion of "drive." Conceptually, Michael's term helped us change our focus on…

Miguel, Caio F.

2013-01-01

85

A tribute to Professor ``Jack'' Christian  

NASA Astrophysics Data System (ADS)

Jack Christian's contributions to the theory of transformations in metals and alloys are distinguished by their lasting value and standard of scholarship. This paper is a short celebration of his far-reaching influence on the theory of martensitic phase transformations.

Bhadeshia, H. K. D. H.

2003-10-01

86

Lively Jack-O'-Lantern Still Life  

ERIC Educational Resources Information Center

Pumpkin carving is a favorite classroom activity. Around late October, the halls are filled with the sour smell of raw pumpkin innards, as parents, teachers and students are up to their elbows in yellowish strings and slime. These round, orange squash are transformed into jack-o'-lanterns that are placed around the school. The day after Halloween,…

Sanzaro, Christy

2010-01-01

87

The Jack Ells Automatic Photoelectric Telescope  

NASA Astrophysics Data System (ADS)

The Automatic Photoelectric Telescope (APT) designed and built by the late Jack Ells has been in the custody of the Crayford Manor House Astronomical Society since 1991 December. A summary is presented of the results obtained during the 1992 observing period.

Pickard, R.

1994-06-01

88

Jack London: The Paradox of Individualism.  

ERIC Educational Resources Information Center

Because of their interest in naturalism and socialism, critics often overlook the major intellectual conflict in Jack London's work: the paradox of individualism. London regards society as affecting the individual in two ways: it either promotes individuality or it demands a conformity that undermines individualism. When society fails Buck in "The…

Deane, Paul

1968-01-01

89

Autonomic dysfunction in a Jack Russell terrier  

PubMed Central

A 4-year-old Jack Russell terrier was presented with an array of clinical signs suggestive of autonomic dysfunction. Many of the clinical signs were consistent with a diagnosis of dysautonomia; however, both chronicity and resolution of signs contradicted a diagnosis of this disease. PMID:21629424

Caines, Deanne; Pinard, Chantale L.; Kruth, Stephen; Orr, Jeremy; James, Fiona

2011-01-01

90

1 INTRODUCTION 1.1 Jacked piles  

E-print Network

1 INTRODUCTION 1.1 Jacked piles The axial capacity of displacement piles in sand is arguably consensus of the mechanism by which a pile penetrates soil. As a consequence, the most widely used design piles. Since pile hammers and vibrators are rarely permitted in urban areas, displacement piles

Bolton, Malcolm

91

Measuring Black Hole Spin Jack Steiner  

E-print Network

Measuring Black Hole Spin Jack Steiner Astrostatistics Forum Nov 13, `07 #12;Overview Objects #12;Black Holes are Extremely Simple Mass: M Spin: J = a*GM2/c (0 evolutionary model of binary black-hole formation Were GRS 1915+105, GRO J1655-40?, etc. GRB sources

Wolfe, Patrick J.

92

HIGH PERFORMANCE COMPUTING TODAY Jack Dongarra  

E-print Network

1 HIGH PERFORMANCE COMPUTING TODAY Jack Dongarra Computer Science Department, University detailed and well-founded analysis of the state of high performance computing. This paper summarizes some of systems available for performing grid based computing. Keywords High performance computing, Parallel

Dongarra, Jack

93

[Study on the antioxidant activity of Menthae longifoliae folium and effect of pesticide treatment with Topsin M on the antioxidant activity].  

PubMed

This study evaluated both the antioxidant activity of Menthae longifoliae folium and the influence of Topsin M (a pesticide which is widely used nowadays) upon the antioxidant activity of the drug. In this respect, there have been used leaves of Mentha longifolia (L.) Huds., both untreated and treated with Topsin M. The leaves were dried, powdered and extracted with aqueous methanol. Taking into account the fact that polyphenols, and especially flavonoids act as antioxidants, these compounds were quantified in the crude extracts. Both the capacity of inhibition of 15-lipoxygenase and the diphenylpicrylhydrazyl radical-scavenging capacity were also evaluated. The undergone study highlighted the fact that crude extracts of Menthae longifoliae folium had a good antioxidant activity; the extracts were active both as diphenylpicrylhydrazyl radical scavengers and as 15-lipoxygenase inhibitors. Treatment with Topsin M did not consistently influence the antioxidant activity of the drug. PMID:16004227

Miron, Anca; Aprotosoaie, Clara; H?ncianu, Monica; T?n?sescu, Violeta; St?nescu, Ursula

2004-01-01

94

DOI: 10.5829/idosi.wasj.2012.18.02.1136 Preliminary Phytochemical Screening of Asteracantha longifolia and Pergularia daemia  

E-print Network

Abstract: The aim of the study was to analyze the phytochemical constituents of two potential folklore medicinal plants such as Asteracantha longifolia and Pergularia daemia. Methanol and Aqueous extract of the dried leaves of these plants were collected and used for phytochemical analysis. The selected plants were found to contain alkaloids, phenolic compounds, tannins and flavonoids except for the absence of terpenoids in A. longifolia and saponin in P. daemia respectively. The significance of the plants in traditional medicine and the importance of the distribution of these chemical constituents were discussed with respect to the role of these plants in ethnomedicine in Tamilnadu.

A. Doss; S. P. An

95

Calcium channel blocking activity of Mentha longifolia L. explains its medicinal use in diarrhoea and gut spasm.  

PubMed

Mentha longifolia has a reputation in traditional medicine in the indications of diarrhoea and gut spasm. This study was carried out to provide a possible pharmacological basis for its medicinal use in hyperactive gut disorders. In a castor oil induced diarrhoeal model, the crude extract of Mentha longifolia (Ml.Cr), at doses of 100-1000 mg/kg, provided 31-80% protection, similar to loperamide. In isolated rabbit jejunum preparations, Ml.Cr caused inhibition of spontaneous and high K(+)-induced contractions, with respective EC50 values of 1.80 (1.34-2.24; n = 6-8) and 0.60 mg/mL (0.37-0.85; n = 6-8), which suggests spasmolytic activity, mediated possibly through calcium channel blockade (CCB). The CCB activity was further confirmed when pretreatment of the tissue with Ml.Cr (0.3-1 mg/mL) caused a rightward shift in the Ca(++) concentration-response curves (CRCs), similar to verapamil. Loperamide also inhibited spontaneous and high K(+)-induced contractions and shifted the Ca(++) CRCs to the right. Activity-directed fractionation revealed that the petroleum spirit fraction was more potent than the parent crude extract and aqueous fraction. These data indicate that the antidiarrhoeal and spasmolytic effects of the crude extract of Mentha longifolia are mediated through the presence of CCB-like constituent(s), concentrated in the petroleum spirit fraction and this study provides indirect evidence for its medicinal use in diarrhoea and spasm. PMID:20669262

Shah, Abdul Jabbar; Bhulani, Nizar Noorali; Khan, Sara Haroon; Ur Rehman, Najeeb; Gilani, Anwarul Hassan

2010-09-01

96

In-Vitro Activity of Saponins of Bauhinia Purpurea, Madhuca Longifolia, Celastrus Paniculatus and Semecarpus Anacardium on Selected Oral Pathogens  

PubMed Central

Objective: Dental caries, periodontitis and other mucosal diseases are caused by a complex community of microorganisms. This study aimed to investigate the antimicrobial properties of saponins of four important oil yielding medicinal plant extracts on selected oral pathogens that are involved in such diseases. Materials and Methods: Saponins were extracted from Bauhinia purpurea, Madhuca longifolia, Celastrus paniculatus and Semecarpus anacardium and purified. Antimicrobial properties of these saponins against Streptococcus mutans, Streptococcus mitis, Streptococcus salivarius, Staphylococcus aureus and Lactobacillus acidophilus were determined using well diffusion method. The minimum inhibitory concentration (MIC) was determined as the lowest concentration of saponins inhibiting bacterial growth after 14 h of incubation at 37°C. The bactericidal activity was evaluated using the viable cell count method. Results: The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of Madhuca longifolia saponin on Streptococcus mutans MTCC 890, Streptococcus mitis and Staphylococcus aureus was 18.3 ± 0.15/34.4 ± 0.24 ?g/ml, 19.0 ± 0.05/32.2 ± 0.0 ?g/ml and 21.2 ± 0.35/39.0 ± 0.30 ?g/ml, respectively and Bauhinia purpurea saponin on Streptococcus mutans MTCC 890, Staphylococcus aureus and Lactobacillus acidophilus was 26.4 ± 0.20/43.0 ± 0.40 ?g/ml, 29.0 ± 0.30/39.6 ± 0.12 ?g/ml and 20.2 ± 0.05/36.8 ± 0.23 ?g/ml, respectively. Conclusion: The strong antimicrobial activity of Madhuca longifolia and Bauhinia purpurea may be due to the presence of complex triterpenoid saponins, oleanane type triterpenoid glycosides or atypical pentacyclic triterpenoid saponin. Hence, these extracted saponins may be used in food and oral products to prevent and control oral diseases. PMID:23323183

Jyothi, K. S.; Seshagiri, M.

2012-01-01

97

29 CFR 1926.305 - Jacks-lever and ratchet, screw, and hydraulic.  

Code of Federal Regulations, 2010 CFR

...Jacks-lever and ratchet, screw, and hydraulic. 1926.305 Section 1926.305...Jacks—lever and ratchet, screw, and hydraulic. (a) General requirements. ...otherwise secured at once. (ii) Hydraulic jacks exposed to freezing...

2010-07-01

98

2. Historic American Buildings Survey Jack Maley, Photographer May 31, ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

2. Historic American Buildings Survey Jack Maley, Photographer May 31, 1978 NORTHEAST (BACK) AND NORTHWEST (SIDE) ELEVATIONS - Franklin Park Zoo, Elephant House, Seaver Street, Boston, Suffolk County, MA

99

1. Historic American Buildings Survey Jack Maley, Photographer May 31, ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

1. Historic American Buildings Survey Jack Maley, Photographer May 31, 1978 SOUTHWEST (FRONT) AND NORTHWEST (SIDE) ELEVATIONS - Franklin Park Zoo, Elephant House, Seaver Street, Boston, Suffolk County, MA

100

3. Historic American Buildings Survey Jack Maley, Photographer May 31, ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

3. Historic American Buildings Survey Jack Maley, Photographer May 31, 1978 NORTHEAST (BACK) AND SOUTHEAST (SIDE) ELEVATIONS - Franklin Park Zoo, Elephant House, Seaver Street, Boston, Suffolk County, MA

101

4. Historic American Buildings Survey Jack Maley, Photographer May 31, ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

4. Historic American Buildings Survey Jack Maley, Photographer May 31, 1978 SOUTHWEST (FRONT) AND SOUTHEAST (SIDE) ELEVATIONS - Franklin Park Zoo, Elephant House, Seaver Street, Boston, Suffolk County, MA

102

Grateloupia longifolia polysaccharide inhibits angiogenesis by downregulating tissue factor expression in HMEC-1 endothelial cells  

PubMed Central

The antiangiogenic and antitumor properties of Grateloupia longifolia polysaccharide (GLP), a new type of polysaccharide isolated from the marine alga, were investigated with several in vitro and in vivo models. Possible mechanisms underlying its antiangiogenic activity were also assessed. GLP dose-dependently inhibited proliferation of human microvascular endothelial cells (HMEC-1) and human umbilical vein endothelial cells (HUVEC), with IC50 values of 0.86 and 0.64?mg?ml?1, respectively. In tube formation and cell migration assays using HMEC-1 cells, noncytotoxic doses of GLP significantly inhibited formation of intact tube networks and reduced the number of migratory cells. Inhibition by GLP was VEGF-independent. In the chick chorioallantoic membrane (CAM) assay, GLP (2.5??g?egg?1) reduced new vessel formation compared with the vehicle control. GLP (0.1?mg?plug?1) also reduced the vessel density in Matrigel plugs implanted in mice. The levels of pan and phosphorylated recptors for VEGF, VEGFR-1 (flt-1) and VEGFR-2 (KDR) were not significantly altered by 5?mg?ml?1 GLP treatment of HMEC-1, although tissue factor (TF) showed significant decreases at both mRNA and protein levels following GLP treatment. In mice bearing sarcoma-180 cells, intravenous administration of GLP (200?mg?kg?1) decreased tumor weight by 52% without obvious toxicity. Vascular density in sections of the tumor was reduced by 64% after GLP treatment. Collectively, these results indicate that GLP has antitumor properties, associated at least, in part, with the antiangiogenesis induced by downregulation of TF. PMID:16715123

Zhang, Chao; Yang, Fan; Zhang, Xiong-Wen; Wang, Shun-Chun; Li, Mei-Hong; Lin, Li-Ping; Ding, Jian

2006-01-01

103

Jack mechanism having positive stop means for its crank handle  

NASA Astrophysics Data System (ADS)

A jack mechanism having a crank handle that drives a linear motion control ball nut and threaded screw is presented. Two rods are included to provide a positive stop in each direction of the jack's limit so as to prevent overrun of the mechanism.

Crockett, Watkins, IV; Baird, Bernard W.

1995-04-01

104

Wendy Gong, Jack Sinden, Mike Braysher and Randall Jones  

E-print Network

Wendy Gong, Jack Sinden, Mike Braysher and Randall Jones Invasive Animals Cooperative Research pests in Australia Wendy Gong1 , Jack Sinden1 , Mike Braysher2 and Randall Jones3 1 School of Business should be cited as: Gong W, Sinden J, Braysher M and Jones R (2009). The economic impacts of vertebrate

Canberra, University of

105

Herbs in exercise and sports  

PubMed Central

The use of herbs as ergogenic aids in exercise and sport is not novel. Ginseng, caffeine, ma huang (also called 'Chinese ephedra'), ephedrine and a combination of both caffeine and ephedrine are the most popular herbs used in exercise and sports. It is believed that these herbs have an ergogenic effect and thus help to improve physical performance. Numerous studies have been conducted to investigate the effects of these herbs on exercise performance. Recently, researchers have also investigated the effects of Eurycoma longifolia Jack on endurance cycling and running performance. These investigators have reported no significant improvement in either cycling or running endurance after supplementation with this herb. As the number of studies in this area is still small, more studies should be conducted to evaluate and substantiate the effects of this herb on sports and exercise performance. For instance, future research on any herbs should take the following factors into consideration: dosage, supplementation period and a larger sample size. PMID:22738233

2012-01-01

106

Herbs in exercise and sports.  

PubMed

The use of herbs as ergogenic aids in exercise and sport is not novel. Ginseng, caffeine, ma huang (also called 'Chinese ephedra'), ephedrine and a combination of both caffeine and ephedrine are the most popular herbs used in exercise and sports. It is believed that these herbs have an ergogenic effect and thus help to improve physical performance. Numerous studies have been conducted to investigate the effects of these herbs on exercise performance. Recently, researchers have also investigated the effects of Eurycoma longifolia Jack on endurance cycling and running performance. These investigators have reported no significant improvement in either cycling or running endurance after supplementation with this herb. As the number of studies in this area is still small, more studies should be conducted to evaluate and substantiate the effects of this herb on sports and exercise performance. For instance, future research on any herbs should take the following factors into consideration: dosage, supplementation period and a larger sample size. PMID:22738233

Chen, Chee Keong; Muhamad, Ayu Suzailiana; Ooi, Foong Kiew

2012-01-01

107

Advanced jack up rig breaking U.S. construction drought  

SciTech Connect

A new heavy duty jack up, due in mid-1998, will be able to simultaneously drill and produce wells in harsher environments and deeper water than current jack ups in the worldwide fleet. Rowan Cos. Inc.`s Gorilla V is the only mobile offshore drilling unit (MODU) currently under construction in the US. Two more enhanced Gorilla design rigs are planned before the year 2000. The enhanced Gorilla class jack up represents the most technologically advanced jack up unit constructed to date. The rigs are structurally designed to meet year-round weather challenges in the harshest geographical environments. Rising demand for drilling rigs, coupled with a dwindling fleet, is generating supply shortages around the world, particularly at the high-specification end of the market. Even increasing the historical retirement age from 20 to 25 years, rig attrition continues at a level of about 18 rigs per year. Apart from the jack up market per se, however, Rowan`s strategy in designing and building enhanced Gorillas is to improve existing jack up drilling technology and offer the versatility to operate as a drilling unit, a mobile production unit, or both simultaneously in either open water locations or alongside existing platforms. The paper discusses the market for these heavy jack-ups, the use of one on the Cohasset project in Nova Scotia, the Gorilla V and enhanced Gorillas, geographical range of use, and MOPU economics.

Kelly, P. [Rowan Companies Inc., Houston, TX (United States)

1997-03-10

108

1. Historic American Buildings Survey Jack E. Boucher, for CFA, ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

1. Historic American Buildings Survey Jack E. Boucher, for CFA, 1970 SOUTHEAST CORNER AND MASSACHUSETTS AVE., FACADE - Clarence Moore House, 1746 Massachusetts Avenue Northwest, Washington, District of Columbia, DC

109

21 CFR 133.154 - High-moisture jack cheese.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 2010-04-01 false High-moisture jack cheese. 133.154 Section 133.154 Food and Drugs...SERVICES (CONTINUED) FOOD FOR HUMAN CONSUMPTION CHEESES AND RELATED CHEESE PRODUCTS Requirements for Specific...

2010-04-01

110

17. INTERIOR, INSPECTION PITS, OVERHEAD CRANE SUPPORT AND CAR JACKING ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

17. INTERIOR, INSPECTION PITS, OVERHEAD CRANE SUPPORT AND CAR JACKING PADS, FACING EAST - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Multiple Unit Light Inspection Shed, New Jersey Transit Hoboken Terminal Rail Yard, Hoboken, Hudson County, NJ

111

5. Jack Boucher, photographer, July (?) 1971. Typical scene along ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

5. Jack Boucher, photographer, July (?) 1971. Typical scene along Erie right-of-way looking westbound at Gulf Summit, New York. - Erie Railway, New Jersey, New York, Pennsylvania, Deposit, Broome County, NY

112

3. Jack Boucher, photographer, July 1971. Scenic view along river ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

3. Jack Boucher, photographer, July 1971. Scenic view along river showing Erie railroad line, taken from Rt. 97 at Hawks Nest, New York. - Erie Railway, New Jersey, New York, Pennsylvania, Deposit, Broome County, NY

113

The Making of Two Readers: Agatha Christie and Jack London.  

ERIC Educational Resources Information Center

Looks at the lives of two well-known writers to explore how diverse experiences produce literate adults. Discusses Agatha Christie and Jack London who used reading and writing to earn a living and to gain international reputations. (MG)

Baghban, Marcia

1990-01-01

114

Bivariate pattern analysis of jack pine trembling aspen interaction  

Microsoft Academic Search

Interspecific interaction between jack pine and trembling aspen was investigated in a 70 x 70 m plot within an even-aged, mixed boreal forest stand in east-central Ontario. A total of \\/I =621 trees were mapped (\\/I) =241 trembling aspen, 112 = 380 jack pine). This empirical spatial pattern was analyzed using Ripley's bivariate second-order spatial analysis, with confidence limits set

N. C. Kenkel

1994-01-01

115

JACK Intelligent Agents - Components for Intelligent Agents in Java  

Microsoft Academic Search

This paper is organised as follows.Section 2 introduces JACK IntelligentAgents, presenting the approach taken byAOS to its design and outlining its majorengineering characteristics. The BDImodel is discussed briefly in Section 3.Section 4 gives an outline of how to buildan application with JACK IntelligentAgents. Finally, in Section 5 we discusshow the use of this framework can bebeneficial to both engineers and

Paolo Busetta; Ralph Rönnquist; Andrew Hodgson; Andrew Lucas

1999-01-01

116

Repellent effect of Salvia dorisiana, S. longifolia, and S. sclarea (Lamiaceae) essential oils against the mosquito Aedes albopictus Skuse (Diptera: Culicidae).  

PubMed

Aedes albopictus (Diptera: Culicidae) has been one of the fastest spreading insects over the past 20 years. Its medical importance is due to the aggressive daytime human-biting behavior and the ability to vector many viruses, including dengue, LaCrosse, Eastern Equine encephalitis and West Nile viruses. In this research, the essential oils (EOs) extracted from fresh air dried leaves of Salvia dorisiana, S. longifolia, and S. sclarea (Lamiaceae) were evaluated for their repellent activity against A. albopictus by using the human-bait technique. The EOs chemical composition was also investigated, and EOs were divided in three different profiles on the basis of their chemical composition: EO with large amount of monoterpenes from S. sclarea, EO rich in oxygenated sesquiterpenes from S. dorisiana, and S. longifolia EO characterized by similar percentages of monoterpenes and sesquiterpenes. The efficacy protection from S. dorisiana, S. longifolia, and S. sclarea EOs, at dosages ranging from 0.004 to 0.4 ?L cm(-2) of skin, was evaluated during 120 min of observation. Results indicated that S. dorisiana, S. longifolia, and S. sclarea EOs had a significant repellent activity (RD(50)?=0.00035, 0.00049, and 0.00101 ?L cm(-2), respectively), with differences in repellency rates, as a function of oil, dosage, and observation time. S. dorisiana was the most effective oil: at the two higher dosages, it gave almost complete protection (with a protective efficacy of 90.99% and 95.62%, respectively) for 90 min. The best protection time was achieved with S. dorisiana essential oil. It ranged from 9.2 to 92.4 min. Protection times of S. longifolia and S. sclarea oils ranged from 3.2 to 60 min, and from 3.6 to 64.2 min, respectively. Our findings clearly reveal that these EOs have a good repellent activity against A. albopictus, therefore they can be proposed to improve the efficacy of repellent formulations against the Asian tiger mosquito. PMID:22350673

Conti, Barbara; Benelli, Giovanni; Leonardi, Michele; Afifi, Fatma U; Cervelli, Claudio; Profeti, Raffaele; Pistelli, Luisa; Canale, Angelo

2012-07-01

117

Persistence pays off Left to right: Ina Williams, Brenda Frank, Jack Narcisse and Sarah Moberg  

E-print Network

Persistence pays off Left to right: Ina Williams, Brenda Frank, Jack Narcisse and Sarah Moberg Once received a BA with a major in First Nations while Jack Narcisse received a certificate in First Nations

118

50 Years of ``Scaling'' Jack Kilby's Invention  

NASA Astrophysics Data System (ADS)

This year is the 50th anniversary of Jack Kilby's 1958 invention of the integrated circuit (IC), for which he won the 2000 Nobel Prize in Physics. Since that invention in a laboratory at Texas Instruments, IC components have been continuously miniaturized, which has resulted in exponential improvement trends in their performance, energy efficiency, and cost per function. These improvements have created a semiconductor industry that has grown to over 250B in annual sales. The process of reducing integrated-circuit component size and associated parameters in a coordinated fashion is traditionally called ``feature-size scaling.'' Kilby's original circuit had active (transistor) and passive (resistor, capacitor) components with dimensions of a few millimeters. Today, the minimum feature sizes on integrated circuits are less than 30 nanometers for patterned line widths and down to about one nanometer for film thicknesses. Thus, we have achieved about five orders of magnitude in linear-dimension scaling over the past fifty years, which has resulted in about ten orders of magnitude increase in the density of IC components, a representation of ``Moore's Law.'' As IC features are approaching atomic dimensions, increasing emphasis is now being given to the parallel effort of further diversifying the types of components in integrated circuits. This is called ``functional scaling'' and ``more then Moore.'' Of course, the enablers for both types of scaling have been developed at many laboratories around the world. This talk will review a few of the highlights in scaling and its applications from R&D projects at Texas Instruments.

Doering, Robert

2008-03-01

119

Sexual behavior of donkey jacks: Influence of ejaculatory frequency and season  

Microsoft Academic Search

The courtship of 5 jacks was evaluated weekly for 12 mo. The characteristics of sexual behavior were recorded before the collection of 2 ejaculates, at 4-h intervals, into an artificial vagina in the presence of a female in either natural or induced estrus. The maximum time given to the jack to perform the ejaculatory mount was 1h. If the jacks

M. O. Gastal; M. Henry; A. R. Beker; E. L. Gastal; A. Gonçalves

1996-01-01

120

Genetic, environmental and interaction effects on the incidence of jacking in Oncorhynchus tshawytscha (chinook salmon)  

Microsoft Academic Search

Jacking in chinook salmon, Oncorhynchus tshawytscha, is defined as sexual maturation of males after at least 1 year in sea water, occurring 1 year prior to any of the females of the same cohort. A breeding experiment was carried out with jack and non-jack sires nested within six dams. The resulting 12 families were reared under two different temperatures for

Daniel D Heath; Robert H Devlin; John W Heath; George K Iwama

1994-01-01

121

Page 1 of 1 Pipe Jacking, Auger Boring, Ramming, and Microtunneling  

E-print Network

Page 1 of 1 Track D Pipe Jacking, Auger Boring, Ramming, and Microtunneling Monday, January 27, 2014 Hilton Americas, Houston, Texas ­ Room 329 7:30 AM Registration 8:15 Pipe Jacking Principles ­ Main considerations for pipe jacking and utility tunneling projects. Terry McArthur, P.E., HDR, Inc. 9

Huang, Haiying

122

Integrability and Transition Coefficients Related to Jack Polynomials  

NASA Astrophysics Data System (ADS)

Integrability plays a central role in solving many body problems in physics. The explicit construction of the Jack polynomials is an essential ingredient in solving the Calogero—Sutherland model, which is a one-dimensional integrable system. Starting from a special class of the Jack polynomials associated to the hook Young diagram, we find a systematic way in the explicit construction of the transition coefficients in the power-sum basis, which is closely related to a set of mutually commuting operators, i.e. the conserved charges.

Liu, Zhi-Sheng; Xu, Ying-Ying; Yu, Ming

2014-05-01

123

12. Pneumatic jack and rollers. To lift the ends of ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

12. Pneumatic jack and rollers. To lift the ends of the draw span to its proper closed position, the Center Street Bridge features a pair of rollers located under the deck of each end of the draw span. The rollers are moved downward by the pistons of a pneumatic jack to support the bridge when closed. To open the draw, the rollers are released and swung upward toward the center of the deck. - Center Street Swing Bridge, Southwest of Public Square, Cleveland, Cuyahoga County, OH

124

9. Historic American Buildings Survey; Jack E. Boucher, photographer; Sept. ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

9. Historic American Buildings Survey; Jack E. Boucher, photographer; Sept. 1969 Copy of measured drawing, 1st floor plan, 1925 (From file of Wash. D.C. Board of Education, office of buildings and grounds) - Jackson (Public) School, R Street & Avon Place Northwest, Washington, District of Columbia, DC

125

Passive GPS-Free Navigation for Small UAVs Jack Langelaan  

E-print Network

-free navigation of a small Unmanned Aerial Vehicle with a minimal sensor suite (limited to an inertial measurement objects on the ground we can obtain a navigation solution. Fusing inertial measurements with bearingsPassive GPS-Free Navigation for Small UAVs Jack Langelaan Steve Rock Department of Aeronautics

Langelaan, Jack W.

126

Graduate Council Meeting Agenda 310 Jack K. Williams Administration Building  

E-print Network

Proficiency task force and TA training task force. b. Veterinary Professional Program reviews. 3. New Course and will be delivered to OGS 3. New Course Requests: The following New Course Requests were approved by the GraduateGraduate Council Meeting Agenda 310 Jack K. Williams Administration Building 2:30 p.m., February 7

127

Graduate Council Meeting Minutes 310 Jack K. Williams Administration Building  

E-print Network

Requests: The following new course requests were approved by the Graduate Council with friendly amendmentsGraduate Council Meeting Minutes 310 Jack K. Williams Administration Building 2:30 p.m., February 7. Veterinary Professional Program reviews. Currently matters relating to the Veterinary Professional Program go

128

Bird–habitat relationships in jack pine boreal forests  

Microsoft Academic Search

We made counts of 42 bird species at 217 points in 44 jack pine Pinus banksiana stands in the boreal region of north-central Saskatchewan, Canada because of concerns about the impact of forestry on avian biodiversity. Using multivariate analyses we describe the main patterns of bird species abundance and composition in relation to local habitat variables. According to canonical correspondence

David A Kirk; Keith A Hobson

2001-01-01

129

Updated 1-12 Robert S. Jack II  

E-print Network

in December 2000 with more than 24 years of service in various assignments at Wright-Patterson AFB, Ohio Institute of Technology, Wright-Patterson AFB, Ohio; a bachelor's of science degree in management #12; Scott AFB, Ill.; and Seymour Johnson AFB, N.C. Prior to his current assignment, Mr. Jack served

130

Hex and Combinatorics Ryan B. Hayward and Jack van Rijswijck  

E-print Network

Hex and Combinatorics Ryan B. Hayward and Jack van Rijswijck Department of Computing Science by Claude Berge's interest in and writings on Hex, we discuss some results on the game. Key words: game of Hex to appear in Discrete Math; submitted Mar'03; accepted Dec'05 Dedicated to Claude Berge, whose

Hayward, Ryan B.

131

NUMERICAL MODELLING OF SWASH ZONE HYDRODYNAMICS Jack A. Puleo1  

E-print Network

NUMERICAL MODELLING OF SWASH ZONE HYDRODYNAMICS Jack A. Puleo1 K. Todd Holland2 , Don N. Slinn3 , Ernie Smith4 and Bret M. Webb5 Abstract: Laboratory measurements of surf and swash zone hydrodynamics orbital and swash velocities. One numerical model relies on the depth averaged non-linear shallow water

Slinn, Donald

132

Risk communication for critical civil infrastructure systems Jack Baker1  

E-print Network

1 Risk communication for critical civil infrastructure systems Jack Baker1 , Jason Coray2 , Paul De for communicating risk within the context of infrastructure management decision support systems. A generic model of a risk-based infrastructure management system is presented to illustrate important relationships of key

Baker, Jack W.

133

DESCRIPTION OF EGGS AND LARVAE OF JACK MACKEREL (Trachurus symmetricus)  

E-print Network

- bryonic, larval. and earl~' juvenile stages. The egg is about 1 mm. in diameter, has a single large oil in the identification of jack-mackerel eggs. The larva, on hatching, is about 2 mm. in length. The oil globnle occupies a forward position in the yolk sac. Pigment is mostly confined to the dorsal and ventral margins of the body

134

JACK AND PEARL RESNICK CAMPUS JACOBI MEDICAL CENTER Rhinelander Ave  

E-print Network

Faculty Parking AdditionalParking ALBERT EINSTEIN COLLEGE OF MEDICINE JACK AND PEARL RESNICK CAMPUS 1 A U N I V E R S I T Y Albert Einstein College of Medicine #12;......................... 1225 Morris Park Ave 20. Einstein Boiler Plant............................1199 Sackett Ave. JACOBI

Yates, Andrew

135

7. Photocopy by Jack Boucher, VIEW OF FORT TOTTEN, LOOKING ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

7. Photocopy by Jack Boucher, VIEW OF FORT TOTTEN, LOOKING NORTHWEST, 1880s. Original photograph at State Historical Society of North Dakota, file No. B 370 - Fort Totten, 12 miles southwest of Devils Lake City off Route 57, Devils Lake, Ramsey County, ND

136

Isolation of a Ve homolog, mVe1, and its relationship to Verticillium wilt resistance in Mentha longifolia (L.) Huds.  

PubMed

As a step toward greater understanding of the genetics of verticillium wilt resistance in plants, we report the sequencing of a candidate wilt resistance gene, mVe1, from the mint diploid model species, Mentha longifolia (Lamiaceae). mVe1 is a putative homolog of tomato (Solanum lycopersicum L.) verticillium wilt (Ve) resistance genes. The mVe1 gene has a coding region of 3,051 bp. The predicted mVe1 protein contains a leucine-rich repeat domain, a common feature of plant disease resistance proteins. We compared 13 mVe1 alleles from three mint species. These alleles shared 96.2-99.6% nucleotide identity. We analyzed four M. longifolia populations segregating with respect to mVe1 alleles and wilt resistance versus susceptibility and found one association between mVe1 genotype and wilt phenotype. We conclude that mVe1 may play a role in mint verticillium wilt resistance, but variation for resistance in our segregating progenies is likely polygenic. Therefore, further investigations of mVe1 and identification of additional candidate genes are both warranted. PMID:19424725

Vining, Kelly; Davis, Thomas

2009-08-01

137

Jack-Laurent symmetric functions for special values of parameters  

E-print Network

We consider the Jack--Laurent symmetric functions for special values of parameters p_0=n+k^{-1}m, where k is not rational and m and n are natural numbers. In general, the coefficients of such functions may have poles at these values of p_0. The action of the corresponding algebra of quantum Calogero-Moser integrals D(k,p_0) on the space of Laurent symmetric functions defines the decomposition into generalised eigenspaces. We construct a basis in each generalised eigenspace as certain linear combinations of the Jack--Laurent symmetric functions, which are regular at p_0=n+k^{-1}m, and describe the action of D(k,p_0) in these eigenspaces.

A. N. Sergeev; A. P. Veselov

2014-12-29

138

Ectomycorrhizal fungal succession in jack pine stands following wildfire  

Microsoft Academic Search

SUMMARY A study was conducted to determine if ectomycorrhizal fungi in an age sequence of jack pine (Pinus banksiana Lamb.) stands which had regenerated following wildfire disturbance followed a successional pattern. Ectomycorrhizal development and number of symbionts were assessed in the forest floor and 0-20 cm deep mineral soil in 6, 41, 65 and 122-yr-old stands by conducting a macrofungal

SUZANNE VISSER

1995-01-01

139

Error threshold for topological color codes on Union Jack lattices  

NASA Astrophysics Data System (ADS)

Sensitivity to noise makes most of the current quantum computing schemes prone to error and nonscalable, allowing only for very small proof of principle devices. Topologically-protected quantum computing aimes to solve this problem by encoding quantum bits and gates in topological properties of the hardware medium that are immune to noise that does not impact the entire medium at once. There are different approaches to achieve topological protection. While traditional approaches use quasiparticle braidings, topological color codes use string-net condensates in 3-colexes. We study the error threshold of topological color codes on Union Jack lattices that allow for the implementation of the whole Clifford group of quantum gates. After mapping the error-correction process onto a statistical mechanical random 3-body Ising model on a Union Jack lattice, we compute its phase diagram in the temperature-disorder plane using Monte Carlo simulations. Our results show that topological color codes on Union Jack lattices have similar error stability than color codes on triangular lattices, as well as the Kitaev toric code.

Katzgraber, Helmut G.; Andrist, Ruben S.; Bombin, Hector; Martin-Delgado, Miguel Angel

2010-03-01

140

Hadean diamonds in zircon from Jack Hills, Western Australia.  

PubMed

Detrital zircons more than 4 billion years old from the Jack Hills metasedimentary belt, Yilgarn craton, Western Australia, are the oldest identified fragments of the Earth's crust and are unique in preserving information on the earliest evolution of the Earth. Inclusions of quartz, K-feldspar and monazite in the zircons, in combination with an enrichment of light rare-earth elements and an estimated low zircon crystallization temperature, have previously been used as evidence for early recycling of continental crust, leading to the production of granitic melts in the Hadean era. Here we present the discovery of microdiamond inclusions in Jack Hills zircons with an age range from 3,058 +/- 7 to 4,252 +/- 7 million years. These include the oldest known diamonds found in terrestrial rocks, and introduce a new dimension to the debate on the origin of these zircons and the evolution of the early Earth. The spread of ages indicates that either conditions required for diamond formation were repeated several times during early Earth history or that there was significant recycling of ancient diamond. Mineralogical features of the Jack Hills diamonds-such as their occurrence in zircon, their association with graphite and their Raman spectroscopic characteristics-resemble those of diamonds formed during ultrahigh-pressure metamorphism and, unless conditions on the early Earth were unique, imply a relatively thick continental lithosphere and crust-mantle interaction at least 4,250 million years ago. PMID:17713532

Menneken, Martina; Nemchin, Alexander A; Geisler, Thorsten; Pidgeon, Robert T; Wilde, Simon A

2007-08-23

141

STARVATION-INDUCED MORTALITY OF YOUNG SEA-CAUGHT JACK MACKEREL, TRACHURUS SYMMETRICUS, DETERMINED WITH HISTOLOGICAL AND MORPHOLOGICAL METHODS  

Microsoft Academic Search

Young jack mackerel, 'Il-aehurus symmetricus, living offshore are starving while those living nearshore are healthy. These results for sea-caught jack mackerel were determined by using histological and mor- phological criteria that reliably diagnosed the viability of laboratory-raised jack mackerel. Both the histological and morphological indices indicated that 350 km offshore about 70% of the first-feeding jack mackerel were starving. In

GAIL H. THEILACKER

1986-01-01

142

BORRELIA SP. INFECTION IN COYOTES, BLACK-TAILED JACK RABBITS AND DESERT COTTONTAILS IN SOUTHERN TEXAS  

Microsoft Academic Search

Coyotes (Canis latrans) from southern Texas were sampled for antibodies to Borrelia burgdorferi from 1980 to 1986; black-tailed jack rabbits (Lepus californicus) and desert cottontails (Sylvilagus audubonii) were sampled in 1986. Coyote fetuses, adult coyote kidneys, and black- tailed jack rabbit and desert cottontail kidneys were cultured for B. burgdorferi in 1986. Results of indirect immunofluorescent antibody (IFA) tests for

Elizabeth C. Burgess; Lamar A. Windberg

143

Qualitative Research, Semiotics, North Beach, South of Markey, Jack London, and the Grateful Dead.  

ERIC Educational Resources Information Center

Looks at educational research from a macro perspective, advocating semiotics as the foundation for qualitative research in education. Presents myths and disputations and an open-ended conclusion via the kaleidoscopic interpretations of Jack London, Phil Dick, Jack Kerouac, the Grateful Dead, and an assortment of street characters. (Author/VWL)

Shank, Gary

1999-01-01

144

Investigating the Jack the Ripper Case: Engaging Students in a Criminal Investigations Class through Active Learning  

ERIC Educational Resources Information Center

The present study examines the utilization of a class project involving the Jack the Ripper murders. Students enrolled in a criminal investigations class were required to investigate the five canonical murders associated with the infamous serial killer known as Jack the Ripper and the murders that occurred in London during 1888. This paper…

Gutierrez, Daniel; Kazmi, Syed

2010-01-01

145

Lithium in Jack Hills zircons: Evidence for extensive weathering of Earth's earliest crust Takayuki Ushikubo a,  

E-print Network

Lithium in Jack Hills zircons: Evidence for extensive weathering of Earth's earliest crust Takayuki Hills lithium weathering continental crust Hadean In situ Li analyses of 4348 to 3362 Ma detrital of REEs. The Jack Hills zircons also have fractionated lithium isotope ratios (7 Li=-19 to+13) about five

Mcdonough, William F.

146

29 CFR 1926.305 - Jacks-lever and ratchet, screw, and hydraulic.  

Code of Federal Regulations, 2012 CFR

...Labor 8 2012-07-01 2012-07-01 false Jacks-lever and ratchet, screw, and hydraulic. 1926.305 Section...CONSTRUCTION Tools-Hand and Power § 1926.305 Jacks—lever and ratchet, screw, and hydraulic. (a) General...

2012-07-01

147

29 CFR 1926.305 - Jacks-lever and ratchet, screw, and hydraulic.  

Code of Federal Regulations, 2011 CFR

...Labor 8 2011-07-01 2011-07-01 false Jacks-lever and ratchet, screw, and hydraulic. 1926.305 Section...CONSTRUCTION Tools-Hand and Power § 1926.305 Jacks—lever and ratchet, screw, and hydraulic. (a) General...

2011-07-01

148

29 CFR 1926.305 - Jacks-lever and ratchet, screw, and hydraulic.  

Code of Federal Regulations, 2014 CFR

...Labor 8 2014-07-01 2014-07-01 false Jacks-lever and ratchet, screw, and hydraulic. 1926.305 Section...CONSTRUCTION Tools-Hand and Power § 1926.305 Jacks—lever and ratchet, screw, and hydraulic. (a) General...

2014-07-01

149

29 CFR 1926.305 - Jacks-lever and ratchet, screw, and hydraulic.  

Code of Federal Regulations, 2013 CFR

...Labor 8 2013-07-01 2013-07-01 false Jacks-lever and ratchet, screw, and hydraulic. 1926.305 Section...CONSTRUCTION Tools-Hand and Power § 1926.305 Jacks—lever and ratchet, screw, and hydraulic. (a) General...

2013-07-01

150

Tough new jack-up for rough seas  

SciTech Connect

Rowan Company's new deepwater jack-up, Rowan Gorilla I, is scheduled to spud its initial well off the east coast of Canada later this month for a consortium of oil companies including Bow Valley-Husky and ATS Exploration Ltd. The new rig's class designation--Gorilla--reflects designers' expectations for the drilling unit that is suited to work in virtually all ice-free hostile environmental areas of the world. Rowan's confidence in the design, built by Marathon LeTourneau's Vicksburg, Mississippi yard, is reiterated by the fact that two additional rigs in the Gorilla class are being built. Rowan Gorilla II is being constructed at Marathon's Singapore yard, and the Rowan Gorilla III is in early construction stages at the firm's Vicksburg yard. The three Gorilla-class rigs will cost in excess of $85 million each, including owner-furnished drilling equipment. This, according to owners, will make them among the costliest jack-ups in the world. Another record being claimed by the Gorilla-class drilling units is that they are the largest jack-ups in the world. Fully outfitted, a Gorilla contains 16,000 tons of steel. Its triangular hull measures 297 ft from bow to stern and 292 ft across the stern. The rig has a variable load of 2,750 tons for drilling consumables and 42,265 sq ft of deck space. Its ample storage capacity, along with its 503-ft leg length and certain design features, makes the rig compatible with hostile offshore areas, where it can continue drilling for long periods unattended.

Not Available

1984-01-01

151

Teaching Scientists to Fish, as Inspired by Jack Dymond  

NASA Astrophysics Data System (ADS)

It is almost inconceivable that as Jack Dymond's graduate student for eight years, I never mastered the skill of fly-fishing, a pursuit so near and dear to his heart. In fact, Jack did inspire me, not to tie flies and cast, but eventually to teach fellow scientists to fish. The work I'll present - connecting scientists and educators to achieve societal benefit - is profoundly influenced by Jack's dedication to applying scientific understanding and critical thinking to societal issues. With colleagues in the Centers for Ocean Sciences Education Excellence (COSEE), http://www.cosee.net/, I enable scientists to efficiently make meaningful contributions to educational outreach. A key goal of the multi-Center, national COSEE Network is helping scientists build the skills and acquire the resources needed to share their science with diverse audiences. At Scripps, we are piloting an innovative approach to helping scientists meet funding agencies' broader impact requirements. Key elements of the approach include: 1) services to identify educational outreach options that best fit scientists' research and preferences; 2) assistance establishing partnerships with educational outreach providers who have the skills and resources to develop and implement effective programs and exhibits; and 3) nuts and bolts (line and fly) assistance writing proposal text, drafting budgets, and coordinating with institutional business offices to ensure that the proposed educational outreach effort is compelling and sufficiently funded. Where does the fishing lesson come in? We facilitators of scientist-educator partnerships empower scientists to launch enduring collaborations. Once comfortable working with top-notch educational organizations, scientists can tap these resources, project after project, often with little or no additional involvement on our part. Our initial investment in brokering the relationships is richly rewarded. By helping scientists get started, it's as if we are teaching them to fish, rather than merely giving them fish.

Franks, S. E.

2004-12-01

152

Forest Modeling of Jack Pine Trees for BOREAS  

NASA Technical Reports Server (NTRS)

As a part of the intensive field campaign for the Boreal forest ecosystem-atmosphere research (BOREAS) project in August 1993, the NASA/JPL AIRSAR covered an area of about 100 km by 100 km near the Prince Albert National Park in Saskatchewan, Canada. At the same time, ground-truth measurements were made in several stands which have been selected as the primary study sites, as well as in some auxiliary sites. This paper focuses on an area including Jack Pine stands in the Nipawin area near the park.

Moghhadam, Mahta; Saatchi, Sasan

1994-01-01

153

Astronaut Jack Lousma in Lower Body Negative Pressure Device  

NASA Technical Reports Server (NTRS)

A medium close-up view of Astronaut Jack R. Lousma, Skylab 3 pilot, in the Lower Body Negative Pressure Device (LBNPD), as Astronaut Alan L. Bean, commander, works around the leg band area. This portion of the LBNPD MO-92 experiment was televised on August 7, 1973. The LBNPD experiment is to provide information concerning the time course of cardiovascular adaptation during flight, and to provide inflight data for predicting the degree of orthostatic intolerence and impairment of physical capacity to be expected upon returning to Earth environment. The bicycle ergometer is in the background, partially visible behind Bean.

1973-01-01

154

A method to derive explicit formulas for an elliptic generalization of the Jack polynomials  

E-print Network

We review a method providing explicit formulas for the Jack polynomials. Our method is based on the relation of the Jack polynomials to the eigenfunctions of a well-known exactly solvable quantum many-body system of Calogero-Sutherland type. We also sketch a generalization of our method allowing to find the exact solution of the elliptic generalization of the Calogero-Sutherland model. We present the resulting explicit formulas for certain symmetric functions generalizing the Jack polynomials to the elliptic case.

Edwin Langmann

2005-11-04

155

Generalized Jack polynomials and the AGT relations for the SU(3) group  

NASA Astrophysics Data System (ADS)

We find generalized Jack polynomials for the SU(3) group and verify that their Selberg averages for several first levels are given by Nekrasov functions. To compute the averages, we derive recurrence relations for the Selberg integrals.

Mironov, S.; Morozov, A.; Zenkevich, Y.

2014-03-01

156

GENERAL TECHNICAL REPORT PSW-GTR-240 Tree-Mediated Interactions Between the Jack Pine  

E-print Network

lodgepole pine (Pinus contorta Douglas ex Loudon)-dominated forests to the jack pine (Pinus banksiana Lamb (Choristoneura pinus pinus, JPBW). We simulated MPB attacks with one of its fungal associates, Grosmannia

Standiford, Richard B.

157

Topological color codes on Union Jack lattices: a stable implementation of the whole Clifford group  

SciTech Connect

We study the error threshold of topological color codes on Union Jack lattices that allow for the full implementation of the whole Clifford group of quantum gates. After mapping the error-correction process onto a statistical mechanical random three-body Ising model on a Union Jack lattice, we compute its phase diagram in the temperature-disorder plane using Monte Carlo simulations. Surprisingly, topological color codes on Union Jack lattices have a similar error stability to color codes on triangular lattices, as well as to the Kitaev toric code. The enhanced computational capabilities of the topological color codes on Union Jack lattices with respect to triangular lattices and the toric code combined with the inherent robustness of this implementation show good prospects for future stable quantum computer implementations.

Katzgraber, Helmut G. [Department of Physics and Astronomy, Texas A and M University, College Station, Texas 77843-4242 (United States); Theoretische Physik, ETH Zurich, CH-8093 Zurich (Switzerland); Bombin, H. [Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2L 2Y5 (Canada); Andrist, Ruben S. [Theoretische Physik, ETH Zurich, CH-8093 Zurich (Switzerland); Martin-Delgado, M. A. [Departamento de Fisica Teorica I, Universidad Complutense, 28040 Madrid (Spain)

2010-01-15

158

Paths, Trees, and Flowers "Jack Edmonds has been one of the creators of the  

E-print Network

Paths, Trees, and Flowers "Jack Edmonds has been one of the creators of the field of combinatorial optimization and polyhedral combinatorics. His 1965 paper `Paths, Trees, and Flowers' [1] was one of the first

159

Talent Developed: Conversations with Masters in the Arts and Sciences. Jack Reed: United States Senator.  

ERIC Educational Resources Information Center

Presents an interview with Jack Reed, senator from Rhode Island, involved in legislation concerning education. The interview addresses his own education, the role of mentors in his life, and his views on gifted education. (DB)

Subotnik, Rena F.

1999-01-01

160

EFFECT OF STARVATION ON THE HISTOLOGICAL AND MORPHOLOGICAL CHARACTERISTICS OF JACK MACKEREL,  

E-print Network

EFFECT OF STARVATION ON THE HISTOLOGICAL AND MORPHOLOGICAL CHARACTERISTICS OF JACK MACKEREL, TRACHURUS SYMMETRICUS, LARVAE GAIL H. THEILACKER' ABSTRACT Histological and morphological criteria were, larvae. A comparison of the histological features offed and starved larvae revealed that the digestive

161

Tropical Cyclone Jack in Satellite 3-D - Duration: 0:13.  

NASA Video Gallery

This 3-D flyby from NASA's TRMM satellite of Tropical Cyclone Jack on April 21 shows that some of the thunderstorms were shown by TRMM PR were still reaching height of at least 17 km (10.5 miles). ...

162

14 CFR 25.519 - Jacking and tie-down provisions.  

Code of Federal Regulations, 2013 CFR

...be designed to withstand the limit load conditions resulting from the static ground load conditions of paragraph (b...combinations of airplane weight and center of gravity. The maximum allowable load at each jack pad must be...

2013-01-01

163

14 CFR 25.519 - Jacking and tie-down provisions.  

Code of Federal Regulations, 2012 CFR

...be designed to withstand the limit load conditions resulting from the static ground load conditions of paragraph (b...combinations of airplane weight and center of gravity. The maximum allowable load at each jack pad must be...

2012-01-01

164

14 CFR 25.519 - Jacking and tie-down provisions.  

Code of Federal Regulations, 2014 CFR

...be designed to withstand the limit load conditions resulting from the static ground load conditions of paragraph (b...combinations of airplane weight and center of gravity. The maximum allowable load at each jack pad must be...

2014-01-01

165

14 CFR 25.519 - Jacking and tie-down provisions.  

Code of Federal Regulations, 2010 CFR

...be designed to withstand the limit load conditions resulting from the static ground load conditions of paragraph (b...combinations of airplane weight and center of gravity. The maximum allowable load at each jack pad must be...

2010-01-01

166

14 CFR 25.519 - Jacking and tie-down provisions.  

Code of Federal Regulations, 2011 CFR

...be designed to withstand the limit load conditions resulting from the static ground load conditions of paragraph (b...combinations of airplane weight and center of gravity. The maximum allowable load at each jack pad must be...

2011-01-01

167

Jack Tworkov's work from 1955 to 1979 : the synthesis of choice and chance  

E-print Network

Jack Tworkov began painting in the 1920s and made his reputation later as an Abstract Expressionist working in a gestural style. At the age of sixty-five Tworkov put that reputation on the line by undergoing a radical ...

Fichner-Rathus, Lois, 1953-

1981-01-01

168

From left, Richard Rogers, Rep. Ellen Story (D-Amherst), President Jack Wilson, Provost Charlena Seymour,  

E-print Network

From left, Richard Rogers, Rep. Ellen Story (D-Amherst), President Jack Wilson, Provost Charlena of the American Friends Service Committee, the papers of former Students for a Demo- cratic Society president Carl

Schweik, Charles M.

169

2. Jack Boucher,photographer, July 1971. Scenic view along river showing ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

2. Jack Boucher,photographer, July 1971. Scenic view along river showing Erie railroad line, Taken from Rt. 97 at Hawks Nest, New York. - Erie Railway, New Jersey, New York, Pennsylvania, Deposit, Broome County, NY

170

Development and application of force resultant models describing jack-up foundation behaviour  

Microsoft Academic Search

As jack-ups have moved into deeper and harsher waters there has been an increased need to understand jack-up behaviour and develop analysis techniques. One of the areas of significant development has been the modelling of spudcan footing performance, where the load–displacement behaviour of the footings is required to be included in any overall numerical model. Because they can be incorporated

M. J. Cassidy; C. M. Martin; G. T. Houlsby

2004-01-01

171

Jack mackerel Trachurus japonicus juveniles use jellyfish for predator avoidance and as a prey collector  

Microsoft Academic Search

Juveniles of carangid fishes including jack mackerel Trachurus japonicus are known to associate with jellyfishes. The function of this association behavior was studied through rearing experiments\\u000a and underwater visual observations. Association behavior of jack mackerel with moon jellyfish in experimental tanks was more\\u000a frequent in the presence compared to the absence of predators (chub mackerel Scomber japonicus). In the experimental

Reiji Masuda; Yoh Yamashita; Michiya Matsuyama

2008-01-01

172

Proximate nutrient analyses of four species of submerged aquatic vegetation consumed by Florida manatee (Trichechus manatus latirostris) compared to romaine lettuce (Lactuca sativa var. longifolia).  

PubMed

Free-ranging Florida manatees (Trichechus manatus latirostris) consume a variety of sea grasses and algae. This study compared the dry matter (DM) content, proximate nutrients (crude protein [CP], ether-extracted crude fat [EE], nonfiber carbohydrate [NFC], and ash), and the calculated digestible energy (DE) of sea grasses (Thalassia testudinum, Halodule wrightii, and Syringodium filiforme) collected in spring, summer, and winter, and an alga (Chara sp.) with those of romaine lettuce (Lactuca sativa var. longifolia). Neutral-detergent fiber (NDF), acid-detergent fiber (ADF), and lignin (L) measured after ash-extraction were also compared. Results of statistical tests (C = 0.01) revealed DM content was higher in aquatic vegetation than in lettuce (P = 0.0001), but NDF and ADF were up to threefold greater, EE (P = 0.00001) and CP (P = 0.00001) were 2-9 times less, and NFC (P = 0.0001) was 2-6 times lower in sea grass than in lettuce, on a DM basis. Chara was lower in NDF, ADF, L, EE, CP, and NFC relative to lettuce on a DM basis. Ash content (DM basis) was higher (P = 0.0001), and DE was 2-6 times lower in aquatic vegetation than in lettuce. Sea grass rhizomes had lower L and higher ash contents (DM basis) than sea grass leaves. Based on the nutrient analyses, romaine lettuce and sea grasses are not equivalent forages, which suggests that the current diet of captive Florida manatees should be reassessed. PMID:21370638

Siegal-Willott, Jessica L; Harr, Kendal; Hayek, Lee-Ann C; Scott, Karen C; Gerlach, Trevor; Sirois, Paul; Reuter, Mike; Crewz, David W; Hill, Richard C

2010-12-01

173

Jacking mechanism for upper internals structure of a liquid metal nuclear reactor  

DOEpatents

A jacking mechanism for raising the upper internals structure of a liquid metal nuclear reactor which jacking mechanism uses a system of gears and drive shafts to transmit force from a single motor to four mechanically synchronized ball jacks to raise and lower support columns which support the upper internals structure. The support columns have a pin structure which rides up and down in a slot in a housing fixed to the reactor head. The pin has two locking plates which can be rotated around the pin to bring bolt holes through the locking plates into alignment with a set of bolt holes in the housing, there being a set of such housing bolt holes corresponding to both a raised and a lowered position of the support column. When the locking plate is so aligned, a surface of the locking plate mates with a surface in the housing such that the support column is then supported by the locking plate and not by the ball jacks. Since the locking plates are to be installed and bolted to the housing during periods of reactor operation, the ball jacks need not be sized to react the large forces which occur or potentially could occur on the upper internals structure of the reactor during operation. The locking plates react these loads. The ball jacks, used only during refueling, can be smaller, which enable conventionally available equipment to fulfill the precision requirements for the task within available space.

Gillett, James E. (Greensburg, PA); Wineman, Arthur L. (Greensburg, PA)

1984-01-01

174

Jack Rabbit Pretest Shadowplate Drawings For TATB IHE Model Development  

SciTech Connect

The Jack Rabbit Pretest (PT) series consisted of 5 focused hydrodynamic experiments 2021E PT3, PT4, PT5, PT6, and PT7. They were fired in March and April of 2008 at the Contained Firing Facility, Site 300, Lawrence Livermore National Laboratory, Livermore, California. These experiments measured deadzone formation and impulse gradients created during the detonation of TATB based insensitive high explosive. When setting up computer simulations of the Jack Rabbit Pretest series, the modeler or code developer can execute simulations with increasing degrees of refinement using detail found in the shadowplate design. The easiest way to get started is by treating the shadowplate in each experiment as a monolithic homogeneous piece of stainless steel. The simulation of detonation would begin as a point initiation below the center, bottom surface of the shadowplate. The detonation running through the ultrafine TATB booster can be simulated using program burn and then switched over to a reactive flow detonation model as the detonation front crosses the boundary into the main charge LX-17 IHE. A modeler wanting to further refine the simulation and progression of shock through the shadowplate can use the more detailed shadowplate design information presented in this document. The source drawings are included in Appendix A of this document. Their titles and drawing numbers are listed. Each experiment's shadowplate consists of two major components. A 303 stainless steel shape that defines the outer dimensions of shadowplate and a cylindrical 303 stainless steel detonator housing that is located in a closely machined pocket in the shape. The SIMPLE ASSY drawing accurately represents the dimensions of the outer shape, it's machined cylindrical pocket, and detonator body which is treated as a monolithic, homogeneous piece of stainless steel. The detonator body cross section shows an accurately dimensioned void where the slapper flyer barrel, LX-16 (pressed PETN) pellet, and pellet can flyer barrel are located. The FULL ASSY drawing accurately represents the dimensions of the outer shadowplate shape and it's machined pocket. The detonator dimensions and materials are detailed in cross section and exploded view. All diameters, thicknesses, and materials are called out in the drawing. You will notice that the detonator includes a multilayer slapper assembly with two layers of electrically insulating Kapton sandwiching the copper foil bridge circuit. The Kapton insulated circuit is sandwiched between two thin stainless steel sheets. This slapper assembly is secured to the detonator body with two screws. There is a 0.25 mm gap between the slapper assembly and the outer shadowplate shape. The stainless steel detonator body contains an off-center titanium wheel. This titanium wheel is secured to the detonator body with one screw and two pins to maintain position and orientation of the pellet can assembly in the center of the detonator body. The titanium wheel contains a tantalum/tungsten washer and pellet can assembly. The pellet can assembly consists of a pressed LX-16 initiator pellet contained in an extruded aluminum foil can. It may be useful for the modeler to include some of the details of the shadowplate and detonator design to further refine simulations of the Jack Rabbit Pretest experiments. These details may be relevant to the progression of shock originating from the PETN initiation pellet and ultrafine TATB booster that propagates through the shadowplate.

Hart, M M; McDaniel, D W

2009-07-10

175

Stress analysis of jacks, frame and bearing connections, and drill rod for core sampler truck No. 2  

SciTech Connect

This analysis evaluates the structural design adequacy of several components and connections for the rotary mode core sampler truck (RMCST) No. 2. This analysis was requested by the Characterization Equipment Group (WHC 1994a). The components addressed in this report are listed below: front jack assembly and connection to the truck chassis; rear jack assembly and connection to the truck chassis; center outrigger jacks and connection to the truck chassis; lower frame assembly and connection to the truck chassis; bolt connections for bearing plate assembly (for path of maximum load); traverse slide brackets and mounting of the traverse jack cylinders; and drill rod (failure loads).

Ziada, H.H.

1995-02-28

176

Insecticide Activity of Essential Oils of Mentha longifolia, Pulicaria gnaphalodes and Achillea wilhelmsii Against Two Stored Product Pests, the Flour Beetle, Tribolium castaneum, and the Cowpea Weevil, Callosobruchus maculatus  

PubMed Central

Essential oils extracted from the foliage of Mentha longifolia (L.) (Lamiales: Lamiaceae) and Pulicaria gnaphalodes Ventenat (Asterales: Asteraceae), and flowers of Achillea wilhelmsii C. Koch (Asterales: Asteraceae) were tested in the laboratory for volatile toxicity against two storedproduct insects, the flour beetle, Tribolium castaneum Herbst (Coleoptera: Tenebrionidae) and the cowpea weevil, Callosobruchus maculatus F. (Coleoptera: Bruchidae). The chemical composition of the isolated oils was examined by gas chromatography-mass spectrometry. InM longifolia, the major compounds were piperitenon (43.9%), tripal (14.3%), oxathiane (9.3%), piperiton oxide (5.9%), and d-limonene (4.3%). In P. gnaphalodes, the major compounds were chrysanthenyl acetate (22.38%), 2L -4L-dihydroxy eicosane (18.5%), verbenol (16.59%), dehydroaromadendrene (12.54%), ?-pinen (6.43%), and 1,8 cineol (5.6%). In A. wilhelmsii, the major compounds were 1,8 cineole (13.03%), caranol (8.26%), alpha pinene (6%), farnesyl acetate (6%), and p-cymene (6%). C maculatus was more susceptible to the tested plant products than T castaneum. The oils of the three plants displayed the same insecticidal activity against C. maculatus based on LC50 values (between 1.54µl/L air in P. gnaphalodes, and 2.65 µl/L air in A. wilhelmsii). While the oils of A. wilhelmsii and M. longifolia showed the same strong insecticidal activity against T. castaneum (LC50 = 10.02 and 13.05 µl/L air, respectively), the oil of P. gnaphalodes revealed poor activity against the insect (LC50 = 297.9 µl/L air). These results suggested that essential oils from the tested plants could be used as potential control agents for stored-product insects. PMID:23413994

Khani, Abbas; Asghari, Javad

2012-01-01

177

Jack Rabbit Pretest Data For TATB Based IHE Model Development  

SciTech Connect

The Jack Rabbit Pretest series consisted of 5 focused hydrodynamic experiments, 2021E PT3, PT4, PT5, PT6, and PT7. They were fired in March and April of 2008 at the Contained Firing Facility, Site 300, Lawrence Livermore National Laboratory, Livermore, California. These experiments measured dead-zone formation and impulse gradients created during the detonation of TATB based insensitive high explosive. This document contains reference data tables for all 5 experiments. These data tables include: (1) Measured laser velocimetry of the experiment diagnostic plate (2) Computed diagnostic plate profile contours through velocity integration (3) Computed center axis pressures through velocity differentiation. All times are in microseconds, referenced from detonator circuit current start. All dimensions are in millimeters. Schematic axi-symmetric cross sections are shown for each experiment. These schematics detail the materials used and dimensions of the experiment and component parts. This should allow anyone wanting to evaluate their TATB based insensitive high explosive detonation model against experiment. These data are particularly relevant in examining reactive flow detonation model prediction in computational simulation of dead-zone formation and resulting impulse gradients produced by detonating TATB based explosive.

Hart, M M; Strand, O T; Bosson, S T

2008-06-18

178

Unforgivable Blackness: The Rise and Fall of Jack Johnson  

NSDL National Science Digital Library

Jack Johnson, the first African-American heavyweight boxing champion of the world, is the subject of a new documentary by the well-regarded filmmaker Ken Burns. The program recently aired for the first time on PBS, and this companion website offers a number of primary documents, short essays, and educational materials that will be of great interest to the Web-browsing public and educators seeking to use the documentary in the classroom. On the site, visitors can learn about the life of this rather remarkable man, and also learn about the broader social and cultural milieu of the times in which he found himself, both in terms of race relations and in terms of the history of the sport of boxing. One particularly well-developed feature here is the section that deals with â??The Fight of the Centuryâ?, which pitted Johnson versus Jim Jeffries, who at that point was the retired white heavyweight champion of the world. The site is rounded out by a number of lesson plans and additional resources (such as books and other online sites) for educators.

179

The Whitechapel murders: the case of Jack the Ripper.  

PubMed

Between August 31 and November 9, 1888, in the Whitechapel section of the East End of London, the murders of five women came to be referred to as the notorious Jack the Ripper murder cases. Each victim was a woman of the streets who was a heavy drinker and apparently heavily intoxicated when she was killed. All except one were strangled, had their throats cut, and were mutilated after they were killed. The victim who was not mutilated was strangled and saved from desecration when the killer was startled and interrupted before carrying out postmortem mutilation. The last victim was killed indoors, and all deaths occurred late in the evening or in the early morning hours. Forensic science laboratories were not yet developed, so the only truly forensic examinations were made on the bodies and of the notes which the killer was alleged to have sent to the police and others. After the last crime there were no further communications with the murderer, and no one was ever charged with these crimes. This case has become the standard to which similar cases have been compared for the past century. It has been the subject for many fictionalized works written in many languages, including cinema and television productions. This case is reviewed and evaluated as to how a similar case may be investigated using modern forensic techniques. PMID:7030054

Eckert, W G

1981-03-01

180

Serologic survey of selected zoonotic disease agents in black-tailed jack rabbits from western Texas.  

PubMed

A serologic survey for the agents of Rocky Mountain spotted fever (RMSF) (Rickettsia rickettsii), Borrelia spp. including the causative agent for Lyme disease (Borrelia burgdorferi), and plague (Yersinia pestis) was conducted on blood samples collected from 30 and 46 black-tailed jack rabbits (Lepus californicus) from an urban environment in Lubbock, Texas (USA) during winter 1987 and the following spring 1988, respectively. Antibody titers to the agents of RMSF and borreliosis were detected in sera of 28 and 1% of the jack rabbits, respectively. Neither organisms (rickettsiae and/or spirochetes) nor their associated antigens were detected in any of the tissue or whole blood samples; plague antibodies were not detected in the 76 jack rabbits sampled. Four of 18 ticks (Dermacentor parumapertus) removed from 12 jack rabbits were positive for RMSF using the fluorescent antibody test. The black-tailed jack rabbit is a common wildlife species living in close proximity to higher density human populations in many areas of the southwestern United States. Our results indicate the potential importance of urban populations of this mammal as reservoirs for at least one important zoonotic disease, RMSF, in western Texas. PMID:2106044

Henke, S E; Pence, D B; Demarais, S; Johnson, J R

1990-01-01

181

Early Archean crustal evolution of the Jack Hills Zircon source terrane inferred from Lu-Hf, 207Pb\\/206Pb, and delta18O systematics of Jack Hills zircons  

Microsoft Academic Search

Several lines of isotopic evidence - the most direct of which is from Hadean Jack Hills zircons - suggest a very early history of crust formation on Earth that began by about 4.5 Ga. To constrain both the fate of the reservoir for this crust and the nature of crustal evolution in the sediment source region of the Jack Hills,

Elizabeth A. Bell; T. Mark Harrison; Malcolm T. McCulloch; Edward D. Young

2011-01-01

182

If you saw Tom Cruise smiling like Jack Nicolson, you would still recognize the person as Tom Cruise. However, if you saw  

E-print Network

If you saw Tom Cruise smiling like Jack Nicolson, you would still recognize the person as Tom Nicolsons' faces and that face was smiling like Jack Nicolson, you would more likely name this person¨lthoff Could you recognize Jack Nicolson or Tom Cruise by their smiles? Would you realize, if Tom Cruise smiled

183

Towards the Proof of AGT Relations with the Help of the Generalized Jack Polynomials  

NASA Astrophysics Data System (ADS)

Original proofs of the AGT relations with the help of the Hubbard-Stratanovich duality of the modified Dotsenko-Fateev matrix model did not work for ? ? 1, because Nekrasov functions were not properly reproduced by Selberg-Kadell integrals of Jack polynomials. We demonstrate that if the generalized Jack polynomials, depending on the N-ples of Young diagrams from the very beginning, are used instead of the N-linear combinations of ordinary Jacks, this resolves the problem. Such polynomials naturally arise as special elements in the equivariant cohomologies of the GL( N)-instanton moduli spaces, and this also establishes connection to alternative ABBFLT approach to the AGT relations, studying the action of chiral algebras on the instanton moduli spaces. In this paper, we describe a complete proof of AGT in the simple case of GL(2) ( N = 2) Yang-Mills theory, i.e., the 4-point spherical conformal block of the Virasoro algebra.

Morozov, Alexei; Smirnov, Andrey

2014-05-01

184

Malignant mesenchymal tumors in two white-tailed jack rabbits (Lepus townsendii).  

PubMed

Two white-tailed jack rabbits (Lepus townsendii) with proliferative lesions in their internal organs were submitted to the Canadian Cooperative Wildlife Health Centre (Saskatoon, Saskatchewan, Canada) for necropsy because of concern that dogs that had contact with the hares might have been exposed to an infectious disease. In both hares, the primary diagnosis was neoplasia. One hare had metastatic leiomyosarcoma and uterine fibroma, the other had metastatic mesenchymal tumors involving the liver and mesentery. These cases represent the only reports of malignant mesenchymal tumors in white-tailed jack rabbits that we have found in the literature. PMID:15650095

Jardine, Claire; Wobeser, Gary A; Simko, Elemir

2004-10-01

185

Early Archean crustal evolution of the Jack Hills Zircon source terrane inferred from Lu-Hf, 207Pb/ 206Pb, and ? 18O systematics of Jack Hills zircons  

NASA Astrophysics Data System (ADS)

Several lines of isotopic evidence - the most direct of which is from Hadean Jack Hills zircons - suggest a very early history of crust formation on Earth that began by about 4.5 Ga. To constrain both the fate of the reservoir for this crust and the nature of crustal evolution in the sediment source region of the Jack Hills, Western Australia, during the early Archean, we report here initial 176Hf/ 177Hf ratios and ? 18O systematics for <4 Ga Jack Hills zircons. In contrast to the significant number of Hadean zircons which contain highly unradiogenic 176Hf/ 177Hf requiring a near-zero Lu/Hf reservoir to have separated from the Earth's mantle by 4.5 Ga, Jack Hills zircons younger than ca. 3.6 Ga are more radiogenic than -13? (CHUR) at 3.4 Ga in contrast to projected values at 3.4 Ga of -20? for the unradiogenic Hadean reservoir indicating that some later juvenile addition to the crust is required to explain the more radiogenic younger zircons. The shift in the Lu-Hf systematics together with a narrow range of mostly mantle-like ? 18O values among the <3.6 Ga zircons (in contrast to the spread towards sedimentary ? 18O among Hadean samples) suggests a period of transition between 3.6 and 4 Ga in which the magmatic setting of zircon formation changed and the highly unradiogenic low Lu/Hf Hadean crust ceased to be available for intracrustal reworking. Constraining the nature of this transition provides important insights into the processes of crustal reworking and recycling of the Earth's Hadean crust as well as early Archean crustal evolution.

Bell, Elizabeth A.; Harrison, T. Mark; McCulloch, Malcolm T.; Young, Edward D.

2011-09-01

186

Replicating vesicles as models of primitive cell growth and Martin M Hanczyc and Jack W Szostak  

E-print Network

Replicating vesicles as models of primitive cell growth and division Martin M Hanczyc and Jack W Szostakà Primitive cells, lacking the complex bio-machinery present in modern cells, would have had to achieve basic cellular functions such as growth and division. Many bilayer-membrane vesicles, depending

Heller, Eric

187

Jack W. Szostak n this age of genome sequencing, the idea  

E-print Network

Jack W. Szostak I n this age of genome sequencing, the idea that biopolymer sequences are a type and function. But the recent deluge of phylo- genetic sequence data provides thousands of examples of related of molecularly coded information is well established. We are all familiar with the idea that it is the sequence

Heller, Eric

188

Optimizing Walking Controllers Jack M. Wang David J. Fleet Aaron Hertzmann  

E-print Network

these terms produce a number of important fea- tures of natural walking, including active toe-off, near-passive on the hip to generate forward momentum, while normal human walking relies heavily on the ankle, with a near-passiveOptimizing Walking Controllers Jack M. Wang David J. Fleet Aaron Hertzmann University of Toronto

Toronto, University of

189

Astronauts Jack R. Lousma, right, and C. Gordon Fullerton greet the press  

NASA Technical Reports Server (NTRS)

Astronauts Jack R. Lousma speaks to news media and friends at Ellington Air Force Base after the landing the the Space Shuttle Columbia at the end of the STS-3 mission. Pilot C. Gordon Fullerton, holding his daughter, stands behind him (28929); wide angle view of STS-3 crew and families on podium (28930).

1982-01-01

190

EFFECT OF STARVATION ON THE HISTOLOGICAL AND MORPHOLOGICAL CHARACTERISTICS OF JACK MACKEREL, TRACHURUS SYMMETRICUS, LARVAE  

Microsoft Academic Search

Histological and morphological criteria were developed to assess the nutritional condition of laboratory-reared jack mackerel, Trachurus symmetricus, larvae. A comparison of the histological features of fed and starved larvae revealed that the digestive tract and its associated glands were the first tissues to be affected by starvation. The extent of cellular deterioration increased with time of starvation. To classify larval

GAIL H. THEILACKER

191

Trace Elements Reveal a Possible Link Between Jack Hills Detrital Zircons and the Late Heavy Bombardment  

NASA Astrophysics Data System (ADS)

The Jack Hills detrital zircons range in age 4.3-3.0 Ga. At ca. 3.9 Ga the record contains a population that appears to have recrystallized during a major thermal event. This may be circumstantial terrestrial evidence for the Late Heavy Bombardment.

Bell, E. A.; Harrison, T. M.

2012-03-01

192

Astronaut Jack Lousma looks at map of Earth in ward room of Skylab cluster  

NASA Technical Reports Server (NTRS)

Astronaut Jack R. Lousma, Skylab 3 pilot, looks at a map of Earth at the food table in the ward room of the Orbital Workshop (OWS). In this photographic reproduction taken from a television transmission made by a color TV camera aboard the Skylab space station cluster in Earth orbit.

1973-01-01

193

Dissociative Recombination of H3O+ Anthony E. Ketvirtis and Jack Simons*  

E-print Network

Dissociative Recombination of H3O+ Anthony E. Ketvirtis and Jack Simons* Chemistry Department, Uni of dissociative recombination (DR) of H3O+ + e- experiments carried out in the ASTRID heavy- ion storage ring studied reaction type has been dissociative recombination (DR), a process whose theory was treated

Simons, Jack

194

Cadmium accumulation by jack-bean and sorghum in hydroponic culture.  

PubMed

Among the technologies used to recuperate cadmium (Cd) contaminated soils, phytoextraction are particularly important, where the selection of suitable plants is critical to the success of the soil remediation. Thus, the objectives of this study were to evaluate the responses of jack-bean and sorghum to Cd supply and to quantify Cd accumulation by these species grown in hydroponic culture. The plants were subjected to 0, 15, 30, or 60 ?mol Cd L(-1) in the nutrient solution, and gas exchange, plant growth and Cd accumulation were measured at 25 days after starting Cd treatments. The Cd supply severely reduced growth of shoots and roots in both species. In jack-bean, Cd decreased photosynthesis by 56-86%, stomatal conductance by 59-85% and transpiration by 48-80%. The concentrations and amounts of Cd accumulated in the plant tissues were proportional to the metal supply in the nutrient solution. Sorghum was more tolerant than jack-bean to Cd toxicity, but the latter showed a greater metal concentration and accumulation in the shoot. Therefore, jack-bean would be more suitable than sorghum for use in Cd phytoremediation programs based on phytoextraction. PMID:25397989

Zancheta, Ariana Carramaschi Francato; De Abreu, Cleide Aparecida; Zambrosi, Fernando César Bachiega; Erismann, Norma de Magalhães; Lagôa, Ana Maria Magalhães Andrade

2015-01-01

195

Structure and dynamics of jack pine stands near Elk Lake, Ontario: a multivariate N. C. KENKEL'  

E-print Network

. KENKEL' Department of Plant Sciences, Universio of Western Ontario, London, Ont., Canada N6A 5B7 Received May 6, 1985 KENKEL,N. C. 1986. Structure and dynamics of jack pine stands near Elk Lake, Ontario, and this is discussed in the context of vegetation structure and dynamics. KENKEL,N. C. 1986. Structure and dynamics

Kenkel, Norm

196

Local competition in a naturally established jack pine stand N. C. KENKEL  

E-print Network

Local competition in a naturally established jack pine stand N. C. KENKEL Department of Botany of Computer Science, University of Manitoba, Winnipeg, Man., Canada R3T 2N2 Received February 6, 1989 KENKEL surrounded by larger individuals, are most likely to die over a given time interval. KENKEL,N. C., HOSKINS

Kenkel, Norm

197

ATLAS on the BlueGene/L Preliminary Results Keith Seymour Haihang You Jack Dongarra  

E-print Network

ATLAS on the BlueGene/L ­ Preliminary Results Keith Seymour Haihang You Jack Dongarra Department The goal of this work is to use ATLAS to produce a tuned linear algebra library for the BlueGene/L, while of the machine present a few difficulties for a straightforward port of ATLAS. The compute nodes themselves

Dongarra, Jack

198

Evaluation of High-Performance Computing Software Shirley Browne Jack Dongarray Tom Rowanz  

E-print Network

Evaluation of High-Performance Computing Software Shirley Browne Jack Dongarray Tom Rowanz Abstract The absence of unbiased and up to date compara- tive evaluations of high-performance computing soft- ware should be directed. HPCC programs, is currently undertaking compara- tive evaluations of high-performance

Dongarra, Jack

199

Dendroecology in young stands: case studies from jack pine in northern lower Michigan  

E-print Network

trees to improve our understanding of the early stages of stand development. # 2003 Elsevier Science BDendroecology in young stands: case studies from jack pine in northern lower Michigan Carolyn A. Copenheaver* , Marc D. Abrams 203 Forest Resources Laboratory, School of Forest Resources, The Pennsylvania

Abrams, Marc David

200

Sex-role ideology and children's drawings: Does the jack-o-lantern smile or scare?  

Microsoft Academic Search

Jack-o-lanterns drawn by kindergarteners were submitted to adult judges who were asked both to identify the child's gender from the drawing and to give reasons for the judgment made. Judges agreed that the characteristics distinguishing girls' from boys' drawings were use of details, neatness, colorfulness, smiling face, and symmetry; while boys' drawings differed from girls' in their frightening faces, messiness,

Bernice Lott

1979-01-01

201

Borrelia sp. infection in coyotes, black-tailed jack rabbits and desert cottontails in southern Texas.  

PubMed

Coyotes (Canis latrans) from southern Texas were sampled for antibodies to Borrelia burgdorferi from 1980 to 1986; black-tailed jack rabbits (Lepus californicus) and desert cottontails (Sylvilagus audubonii) were sampled in 1986. Coyote fetuses, adult coyote kidneys, and black-tailed jack rabbit and desert cottontail kidneys were cultured for B. burgdorferi in 1986. Results of indirect immunofluorescent antibody (IFA) tests for B. burgdorferi in coyotes were as follows (number positive at a dilution of greater than or equal to 1:128/number tested): 1980 (0 of 30), 1981 (0 of 21), 1982 (0 of 53), 1983 (0 of 78), 1984 (47 of 97), 1985 (20 of 88), and 1986 (42 of 80). Eight of 26 black-tailed jack rabbits and two of seven desert cottontails tested in 1986 had IFA titers to B. burgdorferi of greater than or equal to 1:128. Borrelia burgdorferi was isolated from one of five coyote fetuses, three of 31 adult coyote kidneys, and two of 10 black-tailed jack rabbit kidneys in 1986. These results indicate that B. burgdorferi infection has been present in coyotes in Texas, at least since 1984 and that transplacental transmission occurs. PMID:2644452

Burgess, E C; Windberg, L A

1989-01-01

202

The Future of the American Faculty: An Interview with Martin J. Finkelstein and Jack H. Schuster  

ERIC Educational Resources Information Center

Martin J. Finkelstein and Jack H. Schuster have teamed up to continue tracing the changes taking place in faculty work with their Project on the American Faculty. They have published The New Academic Generation: A Profession in Transformation (1998), co-authored with Robert Seal, and are preparing a new manuscript to appear in 2004 with a working…

Rice, R. Eugene

2004-01-01

203

Glassy behavior in an exactly solved spin system with a ferromagnetic transition Robert L. Jack,1  

E-print Network

, such as the Fredrickson-Andersen FA 9 or East 10 models see Ref. 11 for a review studied in Refs. 1­3 : the crystal phaseGlassy behavior in an exactly solved spin system with a ferromagnetic transition Robert L. Jack,1 that applying simple dynamical rules to Baxter's eight-vertex model leads to a system which resembles a glass

Garrahan, Juan P.

204

Reforesting the jack pine barrens: a long-term common garden experiment  

Microsoft Academic Search

Long-term common garden experiments provide the unique opportunity to assess the individual life-long and regeneration response of different tree species to their shared environment. The survival, growth, and regeneration of three locally native, 22 regionally native, and 16 nonnative (exotic to North America) tree species were measured in a common garden experiment established in 1888 on the jack pine barrens

Jason S. Kilgore; Frank W. Telewski

2004-01-01

205

Shrink-Wrap Vesicles Shelly M. Fujikawa, Irene A. Chen, and Jack W. Szostak*  

E-print Network

Shrink-Wrap Vesicles Shelly M. Fujikawa, Irene A. Chen, and Jack W. Szostak* Howard Hughes Medical the membrane of large unilamellar vesicles made of fatty acids. Such vesicles shrink dramatically upon mixing myristoleic acid (MA) and then shrinking these membranes in a process that retains the majority

Heller, Eric

206

by John D. Roberts Jack Roberts receives the Priestley Medal from Mary L. Good, president ofthe  

E-print Network

wonderful to become associated with the name of Joseph Priestley. The fact is, if you do a little researchey me by John D. Roberts Jack Roberts receives the Priestley Medal from Mary L. Good, president honored to receive the Priestley Medal. Let me start off by saying that I am very deeply apprecia- tive

Bruck, Jehoshua (Shuki)

207

A PARALLEL BUTTERFLY ALGORITHM JACK POULSON, LAURENT DEMANET, NICHOLAS MAXWELL, AND LEXING YING  

E-print Network

A PARALLEL BUTTERFLY ALGORITHM JACK POULSON, LAURENT DEMANET, NICHOLAS MAXWELL, AND LEXING YING§ Abstract. The butterfly algorithm is a fast algorithm which approximately evaluates a discrete analogue-r, the running time of the algorithm is at most O(r2Nd log N). A parallelization of the butterfly algorithm

Peraire, Jaime

208

Soil chemical changes and plant succession following experimental burning in immature jack pine  

Microsoft Academic Search

In 1975 and 1976, an experimental burning program was conducted in an immature stand of boreal jack pine (Pinus banksiana Lamb.) growing on level, granitic outwash sands in northern Ontario. Nine 0.4-ha plots were burned under a range of fire weather conditions and sampling was conducted to examine the effect of fire on soil chemical changes and revegetation. Results indicated

T. J. Lynham; G. M. Wickware; J. A. Mason

1998-01-01

209

The Jack Kerouac Literary Festival & Lowell Celebrates Kerouac's 25th Anniversary  

E-print Network

. Presenting Partners Major Sponsors John Sampas, Barnes & Noble Downtown/UMass Lowell, Moses Greeley Parker Jack" Literary Walking Tour, led by Roger Brunelle Begins at the old St. Louis de France Church their respective works. Dharma Buns Sandwich Company, 26 A Market St. 12:00 p.m. Moses Greeley Parker Lectures

Massachusetts at Lowell, University of

210

Jack H. Winters joined Bell Labs in 1981, fresh out of  

E-print Network

[another department member] down the hall." My, how times have changed! RESEARCH DRIVERS The definition runs out)! MOTIVATION I have found the first definition to be a great motivator in my own research on Industrial Research [leadership REFLECTIONS] I am very pleased to have Jack Winters, chief scientist at Motia

Nehorai, Arye

211

Improving Quality & Competitiveness of Jersey Tomatoes Jack Rabin, Associate Director -Farm Programs  

E-print Network

Improving Quality & Competitiveness of Jersey Tomatoes Jack Rabin, Associate Director - Farm Programs While not our largest selling crop, the Jersey Tomato is a signature crop that helps sell other items when wholesale orders come in. Seventy- ve years ago, 25-50% of shipped market tomatoes were lost

Goodman, Robert M.

212

Java Access to Numerical Libraries Henri Casanova \\Lambda Jack Dongarra \\Lambda y David M. Doolin \\Lambda  

E-print Network

Java Access to Numerical Libraries Henri Casanova \\Lambda Jack Dongarra \\Lambda y David M. Doolin \\Lambda May 31, 1997 Abstract It is a common and somewhat erroneous belief that Java will always be ``too the question of scientific computing via Java: NetSolve and f2j. The approaches taken by these two projects

Dongarra, Jack

213

Seasonal variation of carbon dioxide exchange rates above and below a boreal jack pine forest  

Microsoft Academic Search

Fluxes of carbon dioxide were measured above and below a boreal jack pine stand with the eddy covariance method. Our goal was to examine the seasonal variation of the net carbon dioxide exchange between the ecosystem and the atmosphere and to understand the relative contributions of the vegetation and rhizosphere to these fluxes.Over the course of the growing season the

Dennis D. Baldocchi; Christoph A. Vogel; Brad Hall

1997-01-01

214

Ribosomal Synthesis of Dehydroalanine-Containing Peptides Florian P. Seebeck and Jack W. Szostak*  

E-print Network

Ribosomal Synthesis of Dehydroalanine-Containing Peptides Florian P. Seebeck and Jack W. Szostak synthesis by large multifunctional syn- thetases complicates the construction and sampling of large Due to its moderate electrophilicity, Ala may also serve as a warhead in protein- reactive compounds15

Heller, Eric

215

2013 Fellow, The Oceanography Society Jack Barth was named 2013 Fellow by The Oceanography Society.  

E-print Network

2013 Fellow, The Oceanography Society Jack Barth was named 2013 Fellow by The Oceanography Society. The TOS Fellow award recognizes individuals who have attained eminence in oceanography through their outstanding contributions to the field of oceanography or its applications during a substantial period

Kurapov, Alexander

216

Mapping a neutralizing epitope on the coat protein of striped jack nervous necrosis virus  

Microsoft Academic Search

Striped jack nervous necrosis virus (SJNNV), a fish nodavirus, is the causative agent of viral nervous necrosis in marine fishes. The fish nodaviruses are divided into four different genotypes based on the nucleotide sequence of the coat protein gene. In the present study, partial coat protein genes of fish nodaviruses were expressed. This allowed the sero- logical relationship among the

Toyohiko Nishizawa; Ryoko Takano; Kiyokuni Muroga

1999-01-01

217

The jack mackerel fishery and El Niño 1997 98 effects off Chile  

NASA Astrophysics Data System (ADS)

The jack mackerel fishery is one of the most important resources on the South Eastern Pacific Ocean off Chile, with landings higher than 3 million tonnes between 1990 and 1996. During 1997-1998, remarkable changes occurred in the length structure of jack mackerel catches, as juveniles (<26 cm FL) dominated the fishing grounds. That was attributed to the environmental effects of the 1997-98 El Niño on the feeding grounds of the jack mackerel off central-southern Chile. Anomalous sea surface temperatures were first detected in June 1997 and persisted into 1998. The response of the incidence of juveniles lagged one year after the ENSO phenomenon affected central-southern Chile, whereas there was a direct relationship between the proportion of juveniles and the intrusion of the 15°C isotherm towards the south. This isotherm reached its most southerly distribution in 1997-98, as a consequence of the El Niño. Jack mackerel is an oceanic and highly migrating species, so we propose that El Niño conditions affected the migratory pathway of the juveniles. It is postulated that the restoration of the nursery habitat north of 30°S may be delayed by more than 3-4 years. New juveniles will dominate in northern areas in the short-term, whereas the juveniles that migrated to southern areas during 1997-1999 are not expected to return back north. At present, the real situation of the stock is far from certain, but we think that environmental impacts associated to the El Niño can not be overlooked when planning the management of the jack mackerel fishery.

Arcos, Dagoberto F.; Cubillos, Luis A.; P. Núñez, Sergio

218

Tools for Heterogeneous Network Computing \\Lambda Adam Beguelin y , Jack Dongarra z , Al Geist x , Robert Manchek --,  

E-print Network

Tools for Heterogeneous Network Computing \\Lambda Adam Beguelin y , Jack Dongarra z , Al Geist x -- University of Tennessee k Emory University 1 #12; 2 Beguelin, Dongarra, Geist, Manchek, Moore, and Sunderam

Dongarra, Jack

219

High Off the Page: Representing the Drug Experience in the Work of Jack Kerouac and Allen Ginsberg  

Microsoft Academic Search

This article explores attempts by Jack Kerouac and Allen Ginsberg to transcribe their drug experiences onto the written page. Utilizing both Maurice Merleau-Ponty's work on intersubjective communication and Gilles Deleuze and Felix Guattari's conception of the \\

Erik Mortenson

220

75 FR 32357 - Gallatin National Forest; Montana; Jack Rabbit to Big Sky Meadow Village 161 kV Transmission Line...  

Federal Register 2010, 2011, 2012, 2013, 2014

...connect the existing Jack Rabbit Substation located near Four Corners, west of Bozeman, Montana, to a new substation near Big Sky Meadow Village in Big...g. transmission line segment or substation element). In the simplest...

2010-06-08

221

Historical wildlife dynamics on Dugway Proving Ground: population and disease trends in jack rabbits over two decades. [Lepus californicus  

SciTech Connect

In an effort to determine whether US Army activities on the Dugway Proving Ground (DPG) have had an impact on resident wildlife, intensive studies have been conducted on the biology and ecology of the black-tailed jack rabbit (Lepus californicus) since 1965. in addition, the incidence of endemic diseases in several species of resident wildlife on the DPG have been studied from the late 1950s through the mid-1970s. The objectives of this report are to: (1) compile and summarize the jack rabbit data and some of the disease information that is presently contained only in annual reports; (2) compare the DPG jack rabbit data to data available on other jack rabbit populations; and (3) analyze the data for unusual or unexplained fluctuations in population densities or in incidence of disease.

Eberhardt, L.E.; Van Voris, P.

1986-08-01

222

Dense Linear Algebra Solvers for Multicore with GPU Accelerators Stanimire Tomov, Rajib Nath, Hatem Ltaief, and Jack Dongarra  

E-print Network

Dense Linear Algebra Solvers for Multicore with GPU Accelerators Stanimire Tomov, Rajib Nath, Hatem Ltaief, and Jack Dongarra Department of Electrical Engineering and Computer Science, University of equations is a fundamental problem in scientific computing. Numerical sim- ulations involving complex

Dongarra, Jack

223

Is there really carbon in the detrital zircons from Jack Hills, Western Australia?  

NASA Astrophysics Data System (ADS)

We have previously reported the discovery of graphite and diamond inclusions in detrital zircon grains from the Jack Hills in Western Australia, with the oldest inclusion-bearing zircon being 4,252 Myrs (Menneken et al. 2007). When the diamond inclusions were first identified by Raman spectroscopy, several characteristics were taken as evidence against possible contamination from diamond polishing powder used to prepare the samples. Some diamond inclusions appeared larger than the grain-size of the diamond polishing powder, while most of them were associated with graphite. Raman spectra of the diamond inclusions were clearly different to those from diamond particles in the polishing powder. Also, the extremely large spread of carbon isotope compositions of the diamond-graphite composite inclusions with ?13C values extending from -58 to -5 per mil argued against contamination, as both synthetic and natural diamonds have a narrow range of carbon isotope composition (Nemchin et al. 2008). In this study, we have applied transmission electron microscopy (TEM) and Raman spectroscopy on focussed ion beam sections cut from a fully embedded diamond inclusion and a fully embedded carbon inclusion in two zircon grains from Jack Hills. Results show that the graphitic material is not a solid inclusion, but covers the walls of a void as a 10-20 nm thick layer. Since we identified numerous CO2 inclusions in the same host zircon by Raman spectroscopy, it is likely that this inclusion was once filled with CO2 On the other hand, similar to a study by Dobrzhinetskaya et al. (2014), performed on surface diamond-graphite inclusions from one of our samples, we found that the embedded diamond inclusion consists of several hundred nano-meter large angular diamond fragments mixed with some gold particles. This is strong evidence that the embedded diamond particles originated from the diamond polishing powder. The diamond particles could enter the cavity through an opening 2 - 3 ?m wide. Previously, we considered it impossible to remove and insert apparently larger solid minerals through such narrow openings during the polishing process. However, newly discovered CO2 inclusions along with graphite in Jack Hill zircons indicate that diamond grains from the polishing paste likely entered into cavities that were originally filled with CO2 and coated with graphite-like carbon, generating artificial graphite-diamond composite inclusions Dobrzhinetskaya et al. (2014) Diamonds in Earth's oldest zircons from Jack Hills conglomerate, Australia, are contamination. Earth Planet. Sci. Lett., 387, 212. Menneken et al. (2007) Hadean diamonds in zircon from Jack Hills, Western Australia. Nature, 448, 917. Nemchin et al. (2008) A light carbon reservoir recorded in zircon-hosted diamond from the Jack Hills. Nature, 454, 92.

Menneken, Martina; Geisler, Thorsten; Nemchin, Alexander A.; Pollok, Kilian; Whitehouse, Martin; Pidgeon, Robert; Wilde, Simon

2014-05-01

224

An Overview of the New Zealand Jack Mackerel Fishery: Catch Composition, Catch Trends, Seasonality and Length-Frequency Composition  

Microsoft Academic Search

The New Zealand jack mackerel fishery targets three species, Trachurus declivis, T. novaezelandiae and T. murphyi. First catches were documented in 1946, but the targeted fishery, assumed to be T. declivis, started in the mid-1960s, with annual catches increasing to 20,000 t by the time jack mackerels were included in the New Zealand Quota Management System in 1986-87. In 1986

Andrew Penney; Paul Taylor

225

Ontogenetic changes in the ecological function of the association behavior between jack mackerel Trachurus japonicus and jellyfish  

Microsoft Academic Search

Commensal behavior of jack mackerel Trachurus japonicus (Temminck & Schlegel) with jellyfishes has been widely observed but its ecological function is still unclear. The goal of\\u000a the present research is to examine the function of association behavior with jellyfish in the laboratory and in field observations\\u000a with an emphasis on ontogenetic changes. In the laboratory, jack mackerel juveniles (mean standard

Reiji Masuda

2009-01-01

226

Ontogenetic changes in the ecological function of the association behavior between jack mackerel Trachurus japonicus and jellyfish  

Microsoft Academic Search

Commensal behavior of jack mackerel Trachurus japonicus (Temminck & Schlegel) with jellyfishes has been widely observed but its ecological function is still unclear. The goal of\\u000a the present research is to examine the function of association behavior with jellyfish in the laboratory and in field observations\\u000a with an emphasis on ontogenetic changes. In the laboratory, jack mackerel juveniles (mean standard

Reiji Masuda

227

Effects of nitrogen on the growth of jack pine competing with Canada bluejoint grass and large-leaved aster  

Microsoft Academic Search

Biomass, leaf area, canopy photosynthesis, photosynthetic nitrogen-use efficiency (PNUE), nitrogen-partitioning ratio (NPR: ratio of nitrogen taken up by jack pine relative to two different competitor species), and nitrogen uptake (NU) of jack pine (Pinus banksiana Lamb.) competing with large-leaved aster (Aster macrophyllus L.) and Canada blue-joint grass (Calamagrostis canadensis (Michx.) Beauv.) were examined at three nitrogen levels in a controlled-environment

D. E Robinson; R. G Wagner; C. J Swanton

2002-01-01

228

Jack Polynomials as Fractional Quantum Hall States and the Betti Numbers of the ( k + 1)-Equals Ideal  

NASA Astrophysics Data System (ADS)

We show that for Jack parameter ? = -( k + 1)/( r - 1), certain Jack polynomials studied by Feigin-Jimbo-Miwa-Mukhin vanish to order r when k + 1 of the coordinates coincide. This result was conjectured by Bernevig and Haldane, who proposed that these Jack polynomials are model wavefunctions for fractional quantum Hall states. Special cases of these Jack polynomials include the wavefunctions of Laughlin and Read-Rezayi. In fact, along these lines we prove several vanishing theorems known as clustering properties for Jack polynomials in the mathematical physics literature, special cases of which had previously been conjectured by Bernevig and Haldane. Motivated by the method of proof, which in the case r = 2 identifies the span of the relevant Jack polynomials with the S n -invariant part of a unitary representation of the rational Cherednik algebra, we conjecture that unitary representations of the type A Cherednik algebra have graded minimal free resolutions of Bernstein-Gelfand-Gelfand type; we prove this for the ideal of the ( k + 1)-equals arrangement in the case when the number of coordinates n is at most 2 k + 1. In general, our conjecture predicts the graded S n -equivariant Betti numbers of the ideal of the ( k + 1)-equals arrangement with no restriction on the number of ambient dimensions.

Zamaere, Christine Berkesch; Griffeth, Stephen; Sam, Steven V.

2014-08-01

229

Construction of edge states in fractional quantum Hall systems by Jack polynomials  

NASA Astrophysics Data System (ADS)

We study the edge-mode excitations of a fractional quantum Hall droplet by expressing the edge-state wave functions as linear combinations of Jack polynomials with a negative parameter. We show that the exact diagonalization within a subspace of Jack polynomials can be used to generate the chiral edge-mode excitation spectrum in the Laughlin phase and the Moore-Read phase with realistic Coulomb interaction. The truncation technique for the edge excitations simplifies the procedure to reliably extract the edge-mode velocities, which avoids the otherwise complicated analysis of the full spectrum that contains both edge and bulk excitations. Generalization to the Read-Rezayi state is also discussed.

Lee, Ki Hoon; Hu, Zi-Xiang; Wan, Xin

2014-04-01

230

Nontrivial ferrimagnetism of the Heisenberg model on the Union Jack strip lattice  

NASA Astrophysics Data System (ADS)

We study the ground-state properties of the S = 1/2 antiferromagnetic Heisenberg model on the Union Jack strip lattice by using the exact-diagonalization and density matrix renormalization group methods. We confirm a region of a magnetization state intermediate between the Néel-like spin liquid state and the conventional ferrimagnetic state of a Lieb-Mattis type. In the intermediate state, we find that the spontaneous magnetization changes gradually with respect to the strength of the inner interaction. In addition, the local magnetization clearly shows an incommensurate modulation with long-distance periodicity in the intermediate magnetization state. These characteristic behaviors lead to the conclusion that the intermediate magnetization state is a non-Lieb-Mattis ferrimagnetic one. We also discuss the relationship between the ground-state properties of the S = 1/2 antiferromagnetic Heisenberg model on the original Union Jack lattice and those on our strip lattice.

Shimokawa, Tokuro; Nakano, Hiroki

2013-08-01

231

Discussion on key points of wind load of jack-up unit  

NASA Astrophysics Data System (ADS)

The anti-overturning ability and structure safety of jack-up unit in in-place condition are often affected by environment loads, especially wind load. According to the MODU rule, the projected area method is used for calculating the wind load. However, the calculated results are conservative and not good for structure optimization design. In this paper, a 400 ft jack-up is studied as an example. Based on the wind tunnel test and numerical simulation method, some key points of wind load calculation, such as shielding effect, lift effect and shape coefficient of component, are discussed. The study shows that the points mentioned above, which are ignored in the MODU rule calculation, result in the conservative result.

Lin, Yi; Hu, An-kang; Xiong, Fei; Jiang, Wei

2014-03-01

232

Technical considerations in converting jack-up drilling rigs to mobile offshore production units  

SciTech Connect

There is a growing need for converting jack-up drilling rigs to Mobile Offshore Production Units for early production, long-term testing and as a low cost reusable alternative to platforms for short life marginal fields. Installing process equipment on drilling rigs offers a unique set of challenges. These include new loads imposed upon the rig, storage of hydrocarbon liquids, gas venting and flaring, location of and installation of equipment, safety considerations and installation of pipeline risers. The specific technical challenge of converting jack-up rigs for Mobile Offshore Production Units (MOPU) is discussed with example solutions from two projects, one installed in Venezuela and one off the West Coast of Africa.

Duhon, R.D.; Kreider, G.J.; Barnes, J.E.

1995-12-31

233

Compendium of basins for the potential applicability of Jack W. McIntyre`s patented tool  

SciTech Connect

Geraghty & Miller, Inc. of Midland, Texas conducted geological and hydrological feasibility studies of the potential applicability of Jack W. McIntyre`s patented tool for the recovery of natural gas from coalbed formations in the San Juan, Powder River, Greater Green River, Piceance, Black Warrior, Appalachian and Michigan basins. Results from the surveys indicated that geology dominated research efforts for many of the basins. Limited information exists on the hydrology and water quality of the basins. All of the basins contain some potential for the use of Jack McIntyre`s patented production process. This process is designed specifically to separate produced water and produced gas in a downhole environment and may allow for more efficient and economical development of coalbed methane resources in this area.

Reed, P.D.

1994-03-01

234

Physicochemical characterization of lima bean ( Phaseolus lunatus) and Jack bean ( Canavalia ensiformis) fibrous residues  

Microsoft Academic Search

Some physicochemical, physiological and functional characteristics of Jack bean (Canavalia ensiformis) and lima bean (Phaseolus lunatus) fibrous residues, obtained as a by-product during the protein and starch extraction process were evaluated. The C. ensiformis residues had higher crude fibre (22.6%), total dietary fibre (55.8%) and insoluble dietary fibre (52.4%) contents than the P. lunatus (crude fibre, 12.8%; total dietary fibre,

David Betancur-Ancona; Gwendolyne Peraza-Mercado; Yolanda Moguel-Ordoñez; Sonia Fuertes-Blanco

2004-01-01

235

Lithium in Jack Hills zircons: Evidence for extensive weathering of Earth's earliest crust  

NASA Astrophysics Data System (ADS)

In situ Li analyses of 4348 to 3362 Ma detrital zircons from the Jack Hills, Western Australia by SIMS reveal that the Li abundances (typically 10 to 60 ppm) are commonly over 10,000 times higher than in zircons crystallized from mantle-derived magmas and in mantle-derived zircon megacrysts (typically < 2 ppb). High Li concentrations in zircons (10 to 250 ppm) have also been found in igneous zircons from three continental parent rocks: granites, Li-rich pegmatites, and migmatites in pelitic metasediment. The substitution of trivalent cations (REEs and Y) in zircon correlates with Li + 1 and P + 5 , suggesting that an interstitial site for Li, as well as the xenotime substitution for P, provides charge balance for REEs. Li is thus fixed in the zircon structure by coupled substitutions, and diffusive changes in [Li] composition are rate-limited by slow diffusion of REEs. The Jack Hills zircons also have fractionated lithium isotope ratios ( ?7Li = - 19 to + 13‰) about five times more variable than those recorded in primitive ocean floor basalts (2 to 8‰), but similar to continental crust and its weathering products. Values of ?7Li below - 10‰ are found in zircons that formed as early as 4300 Ma. The high Li compositions indicate that primitive magmas were not the source of Jack Hills zircons and the fractionated values of ?7Li suggest that highly weathered regolith was sampled by these early Archean magmas. These new Li data provide evidence that the parent magmas of ancient zircons from Jack Hills incorporated materials from the surface of the Earth that interacted at low temperature with liquid water. These data support the hypothesis that continental-type crust and oceans existed by 4300 Ma, within 250 million years of the formation of Earth and the low values of ?7Li suggest that weathering was extensive in the early Archean.

Ushikubo, Takayuki; Kita, Noriko T.; Cavosie, Aaron J.; Wilde, Simon A.; Rudnick, Roberta L.; Valley, John W.

2008-08-01

236

Simulated acid rain effects on Jack Pine seedling establishment and nutrition  

Microsoft Academic Search

A greenhouse study examined the effects of simulated acid rain on jack pine (Pinus banksiana Lamb.) seedling development and the Grayling sand (Typic Udipsamments) growth medium. Five rain pH levels (2.0, 2.5, 3.0, 4.0, 4.7) and two soil horizons (A\\/E, Bw1) were included as levels of factors. Soil pH decreased only at rain pH 3.0 and below. Exchangeable Ca and

N. W. MacDonald; J. B. Jr. Hart; P. V. Nguyen

2009-01-01

237

Astronaut Jack Lousma hooks up cable for rate gyro six pack during EVA  

NASA Technical Reports Server (NTRS)

Astronaut Jack R. Lousma, Skylab 3 pilot, hooks up a 23 ft. 2 in. connecting cable for the rate gyro six pack during extravehicular activity (EVA) on August 24, 1973, as senn in this photographic reproduction taken from a color television tranmsission made by a TV camera aboard the Skylab space station in Earth orbit. The rate gyros were mounted inside the Multiple Docking Adapter opposite the Apollo Telescope Mount control and display console.

1973-01-01

238

Signals from the ancient geodynamo: A paleomagnetic field test on the Jack Hills metaconglomerate  

NASA Astrophysics Data System (ADS)

The oldest history of Earth's magnetic field cannot be directly read from extant bulk rocks because of subsequent metamorphism at temperatures close to or exceeding the Curie temperature of common magnetic minerals. The Jack Hills metasediments of Western Australia, which have seen lower peak metamorphic temperatures, contain zircons as old as ˜4.4 billion-yr-old. To assess whether these sediments can retain an ancient signal of the geodynamo, we present a paleomagnetic conglomerate test on a cobble-bearing Jack Hills unit. Thermal demagnetization reveals a distinct magnetic component with high unblocking temperatures between ˜550 and 580 °C that passes the conglomerate test, indicating magnetization prior to deposition of the conglomerate. This result, together with rock magnetic data, indicates that the high unblocking temperature component is carried by magnetite which records magnetization in an ambient field, and the simplest explanation is that a dynamo was present. Existing geochronological data imply that the clasts could contain mixtures of minerals extending to ages only slightly older than the maximum depositional age at 3.05 billion-yr-ago. However, the positive conglomerate test reported here indicates that the Jack Hills metasediments have the potential to record Paleorchean to Hadean magnetic fields, on a clast or sub-clast mineral scale.

Tarduno, John A.; Cottrell, Rory D.

2013-04-01

239

, 20141202, published 27 August 20142812014Proc. R. Soc. B Alexander G. Liu, Jack J. Matthews, Latha R. Menon, Duncan McIlroy and Martin D. Brasier  

E-print Network

) Alexander G. Liu1, Jack J. Matthews2, Latha R. Menon2, Duncan McIlroy3 and Martin D. Brasier2,3 1 Department, 20141202, published 27 August 20142812014Proc. R. Soc. B Alexander G. Liu, Jack J. Matthews, Latha R. Menon, Duncan McIlroy and Martin D. Brasier 560 Ma) cnidarian impression from the Late

Cambridge, University of

240

Eoarchean crustal evolution of the Jack Hills zircon source and loss of Hadean crust  

NASA Astrophysics Data System (ADS)

Given the global dearth of Hadean (>4 Ga) rocks, 4.4-4.0 Ga detrital zircons from Jack Hills, Narryer Gneiss Complex (Yilgarn Craton, Western Australia) constitute our best archive of early terrestrial materials. Previous Lu-Hf investigations of these zircons suggested that felsic (low Lu/Hf) crust formation began by ?4.4 to 4.5 Ga and continued for several hundred million years with evidence of the least radiogenic Hf component persisting until at least ?4 Ga. However, evidence for the involvement of Hadean materials in later crustal evolution is sparse, and even in the detrital Jack Hills zircon population, the most unradiogenic, ancient isotopic signals have not been definitively identified in the younger (<3.9 Ga) rock and zircon record. Here we show Lu-Hf data from <4 Ga Jack Hills detrital zircons that document a significant and previously unknown transition in Yilgarn Craton crustal evolution between 3.9 and 3.7 Ga. The zircon source region evolved largely by internal reworking through the period 4.0-3.8 Ga, and the most ancient and unradiogenic components of the crust are mostly missing from the record after ?4 Ga. New juvenile additions to the crust at ca. 3.9-3.8 Ga are accompanied by the disappearance of unradiogenic crust ca. 3.9-3.7 Ga. Additionally, this period is also characterized by a restricted range of ?18O after 3.8 Ga and a shift in several zircon trace element characteristics ca. 3.9-3.6 Ga. The simultaneous loss of ancient crust accompanied by juvenile crust addition can be explained by a mechanism similar to subduction, which effects both processes on modern Earth. The oxygen isotope and trace element information, although less sensitive to tectonic setting, also supports a transition in zircon formation environment in this period.

Bell, Elizabeth A.; Harrison, T. Mark; Kohl, Issaku E.; Young, Edward D.

2014-12-01

241

BOREAS RSS-4 1994 Southern Study Area Jack Pine LAI and FPAR Data  

NASA Technical Reports Server (NTRS)

The RSS-4 team collected several data sets related to leaf, plant, and stand physical, optical, and chemical properties. This data set contains leaf area indices and FPAR measurements that were taken at the three conifer sites in the BOREAS SSA during August 1993 and at the jack pine tower flux and a subset of auxiliary sites during July and August 1994. The measurements were made with LAI-2000 and Ceptometer instruments. The measurements were taken for the purpose of model parameterization and to test empirical relationships that were hypothesized between biophysical parameters and remotely sensed data. The data are stored in tabular ASCII files.

Hall, Forrest G. (Editor); Nickeson, Jaime (Editor); Plummer, Stephen

2000-01-01

242

A borehole jack for deformability, strength, and stress measurements in a 2-inch borehole  

NASA Technical Reports Server (NTRS)

A borehole jack devised for lunar exploration is described and results of its use in simulated lunar solids are presented. A hydraulic cylinder mounted between two stiff plates acts to spread the plates apart against the borehole walls when pressured. The spreading is measured by a displacement transducer and the load is measured hydraulically. The main improvement over previous instruments is the increased stroke, which allows large deformations of the borehole. Twenty-eight pistons are used to obtain a high hydraulic efficiency, and three return pistons are also provided. Pressure-deformation curves were obtained for each test on Lunar Soil Simulant No. 2, a light gray silty basalt powder.

Goodman, R. E.; Hovland, H. J.; Chirapuntu, S.

1971-01-01

243

Cot de l'algorithme d'Euclide et CAPES interne 2000 Dany-Jack Mercier  

E-print Network

Coût de l'algorithme d'Euclide et CAPES interne 2000 Dany-Jack Mercier IUFM de Guadeloupe, Morne euclidiennes nécessaires à l'algorithme d'Euclide. On dé...nit le coût d'un algorithme dans deux modèles di'on exprime une majoration du coût de l'algorithme d'Euclide et de son cousin l'algorithme d'Euclide étendu

Paris-Sud XI, Université de

244

Approach to estimating the maximum depth for glacially induced hydraulic jacking in fractured crystalline rock at Forsmark, Sweden  

NASA Astrophysics Data System (ADS)

Hydraulic jacking is a significant dilation of a fracture that occurs when the pore pressure within it exceeds the sum of the fracture's normal stress and tensile strength. This phenomenon may occur during a glacial period because of changes in hydraulic and mechanical boundary conditions. Since hydraulic jacking may alter flow patterns and the transport capacity of the rock mass, its possible effects on the long-term performance of a nuclear waste repository should be considered. We develop an approach to assess glacially induced hydraulic jacking in fractured crystalline rock and establish bounding estimates of the maximum jacking depth for the Swedish Nuclear Fuel and Waste Management Company's (SKB) repository site at Forsmark. The pore pressure is estimated using mechanically uncoupled two-dimensional poroelastic continuum models with hydraulic and mechanical conditions based on SKB's reconstruction of the Weichselian glaciation at this site (120-0 ka B.P.). For warm-based conditions, the water pressure at the ice/bed interface is set at 98% of the mechanical load, whereas for glacial conditions with extensive proglacial permafrost, the corresponding water pressure is set at a (lower) annual average value. We demonstrate that the pore pressure within the uppermost kilometer of rock is mainly governed by the water pressure at the ice/bed interface and that the mechanical impact of the ice load on the pore pressure is sufficiently small to be ignored. Given the current and estimated future stress conditions at Forsmark, hydraulic jacking is mainly of concern for subhorizontal fractures, i.e., it is sufficient to consider situations when the pore pressure exceeds the vertical stress. We conclude that hydraulic jacking at Forsmark will be confined to the uppermost 200 m of the rock mass.

Lönnqvist, M.; Hökmark, H.

2013-09-01

245

GPR measurements for the distribution of thixotropic slurry behind segments in large diameter and long distance pipe-jacking construction  

NASA Astrophysics Data System (ADS)

It is very important to form an integrated ring of thixotropic slurry around the pipe segments to reduce resistance during large diameter and long distance pipe jacking. Furthermore, the integrated slurry ring between the pipe and the excavated soil can effectively reduce the soil disturbance caused by the pipes, and minimize ground settlement. It is necessary to real-time monitor the spatial distribution of the thixotripic slurry during jacking process. The traditional solution to estimate the outlines of slurry ring is the jacking load and the injecting pressure. If the jacking load increases, which means more slurry should be injected to reduce the jacking load. However, this solution couldn't provide the distribution of the slurry beneath pipe segments, and locate the zones which need to be injected enough slurry. Ground penetrating radar (GPR) has been successfully used to detect the thickness of the grouting behind the shield tunnel segments in last several years. An important factor is the dielectric difference between grouting and soil. Similarly, the interface between the liquid slurry with high relative electric permittivity and surrounding soil, should be recognized from GPR image due to the distinct dielectric difference. Here, GPR experiment has been conducted on a sewage pipe jacking engineering. The purpose of the survey is to evaluate the distribution of the thixotropic slurry through GPR image. In this sewage jacking engineering, the width and the thickness of each pipe segments is 200 cm and 30 cm, respectively. Considering the resolution and propagation range of radar wave, ground coupled bowtie antenna of 900 MHz frequency has been selected for GPR data acquisition. A series of circular GPR data have been collected along the inner surface of pipe segments. In addition, sampling of slurry has been performed on four different segments. The relative electric permittivity and conductivity of the thixotropic slurry have been measured by using time domain reflectometer (TDR). The velocity of propagation in slurry is calculated by dielectric characteristics, which extremely improves the resolution of time-depth conversion. Some process methods, including moving average, AGC and migration, have been applied to improve the quality of each GPR images. It's possible to recognize the reflection wave from the slurry-soil interface from the processed images. Combined the exact velocity estimation, the two-way travel time between pipe-slurry and slurry-soil interfaces can be converted to the thickness of the slurry ring. The experiment results show that GPR is able to evaluate the distribution of the liquid thixotropic slurry behind pipe segments in large diameter and long distance jacking. The velocity measured by TDR can significantly reduce the error caused by the time-depth conversion.

Zhao, Yonghui; Wu, Jiansheng; Xie, Xiongyao; Zeng, Chenchao

2013-04-01

246

Jack pine growth and elemental composition are affected by saline tailings water.  

PubMed

In the processing of oil sands from Alberta's Athabasca formation, large quantities of alkaline, saline tailings and associated process-affected waters are produced. These waters may have a negative effect on plants used in reclamation of mined areas in this region of the northern boreal forest. In the present study, we examined the effects of process-affected water on the growth and elemental composition of jack pine (Pinus banksiana Lamb.) seedlings. Seedlings were grown in sand culture, and treated with tailings water to which mineral nutrients had been added. One-month-old seedlings were treated for 14 d, and all measured growth parameters were reduced. Growth and shoot elemental composition were also measured in seven-month-old seedlings that were treated for 10 wk with process-affected water. Shoots had significantly elevated levels of Na, Cl, S, P, B, and Sr, and significantly reduced levels of Fe, Mo, Ba, and K. The relationships between elemental composition and seedling growth and injury were examined using multiple regression. Growth rates, dry weights, and carotenoid content were reduced, but were not related to shoot elemental composition. Needle necrosis was positively related to tissue Na and Cl. Results indicate that reclamation planning must consider substrate Na and Cl levels when planting jack pine on tailings-affected sites. PMID:11931458

Franklin, Jennifer A; Renault, Sylvie; Croser, Clare; Zwiazek, Janusz J; MacKinnon, Michael

2002-01-01

247

Vacuum contact drying kinetics of Jack pine wood and its influence on mechanical properties: industrial applications  

NASA Astrophysics Data System (ADS)

Wood can be dried rapidly using combined contact heating and low vacuum. However, the impact on Jack pine wood drying and its mechanical strength remains unclear. The aim of this paper was to determine the kinetics of vacuum contact drying of Jack pine (Pinus banksiana) wood boards (dimensions 50 × 100 × 2480 mm3) under various drying temperatures and vacuum pressures at a pilot scale. Drying temperatures and vacuum pressures ranged from 65 to 95 °C and from 169.32 to 507.96 mbar, respectively. Dried samples were subjected to flexural loading to determine mechanical strength. Results indicated that drying time decreased with higher drying temperature and vacuum pressure, where as decreased vacuum pressure increased the temperature of wood samples at a constant drying temperature. Results also indicated that the mechanical properties of dried samples were affected by drying temperature, vacuum pressure, and lumber grade. Mechanical test results were then compared to those for a conventional drying process, revealing that vacuum contact drying do not have a negative impact on the wood mechanical properties.

Ouertani, Sahbi; Koubaa, Ahmed; Azzouz, Soufien; Hassini, Lamine; Dhib, Kamel Ben; Belghith, Ali

2014-12-01

248

Effects of a clear-cut harvest on soil respiration in a jack pine - Lichen woodland  

USGS Publications Warehouse

Quantification of the components of ecosystem respiration is essential to understanding carbon (C) cycling of natural and disturbed landscapes. Soil respiration, which includes autotrophic and heterotrophic respiration from throughout the soil profile, is the second largest flux in the global carbon cycle. We measured soil respiration (soil CO2 emission) at an undisturbed mature jack pine (Pinus banksiana Lamb.) stand in Saskatchewan (old jack pine, OJP), and at a formerly continuous portion of the stand that was clear-cut during the previous winter (clear-cut, CC). Tree harvesting reduced soil CO2 emission from ???22.5 to ???9.1 mol CO2??m2 for the 1994 growing season. OJP was a small net sink of atmospheric CO2, while CC was a net source of CO2. Winter emissions were similar at both sites. Reduction of soil respiration was attributed to disruption of the soil surface and to the death of tree roots. Flux simulations for CC and OJP identify 40% of CO2 emission at the undisturbed OJP site as near-surface respiration, 25% as deep-soil respiration, and 35% as tree-root respiration. The near-surface component was larger than the estimated annual C input to soil, suggesting fast C turnover and no net C accumulation in these boreal uplands in 1994.

Striegl, R.G.; Wickland, K.P.

1998-01-01

249

Sneaker "jack" males outcompete dominant "hooknose" males under sperm competition in Chinook salmon (Oncorhynchus tshawytscha).  

PubMed

In a variety of taxa, males deploy alternative reproductive tactics to secure fertilizations. In many species, small "sneaker" males attempt to steal fertilizations while avoiding encounters with larger, more aggressive, dominant males. Sneaker males usually face a number of disadvantages, including reduced access to females and the higher likelihood that upon ejaculation, their sperm face competition from other males. Nevertheless, sneaker males represent an evolutionarily stable strategy under a wide range of conditions. Game theory suggests that sneaker males compensate for these disadvantages by investing disproportionately in spermatogenesis, by producing more sperm per unit body mass (the "fair raffle") and/or by producing higher quality sperm (the "loaded raffle"). Here, we test these models by competing sperm from sneaker "jack" males against sperm from dominant "hooknose" males in Chinook salmon. Using two complementary approaches, we reject the fair raffle in favor of the loaded raffle and estimate that jack males were ?1.35 times as likely as hooknose males to fertilize eggs under controlled competitive conditions. Interestingly, the direction and magnitude of this skew in paternity shifted according to individual female egg donors, suggesting cryptic female choice could moderate the outcomes of sperm competition in this externally fertilizing species. PMID:24455130

Young, Brent; Conti, David V; Dean, Matthew D

2013-12-01

250

The Jellyfish hunter--Jack Barnes: a pioneer medical toxinologist in Australia.  

PubMed

Dr Jack Handyside Barnes (1922-1985) was one of the small and elite group of Pacific marine toxinologists whose work was characterised by an uncompromising rugged persona, a focussed resolve to solve challenging problems of human clinical envenomation, and who conducted curiosity-driven research under conditions of scientific isolation. He was a pioneering advocate for the preservation of marine heritage, particularly that of the Great Barrier Reef. A former military commando who later became a general medical practitioner with extensive surgical and obstetric skills, in 1947 he was appointed the Medical Superintendent of Thursday Island in the Torres Strait. Later (from January 1953), he worked indefatigably as a general medical practitioner in Cairns, in tropical North Australia. For four decades (1945-1985), Jack Barnes undertook detailed laboratory, clinical and field research into invertebrate envenomation, particularly medusan toxinology. In 1960 he discovered the species responsible for the Irukandji syndrome, a small carybdeid named Carukia barnesi in his honour. He invented the research technique for the extraction of venom from the world's most venomous creature, the Pacific box Jellyfish, Chironex fleckeri. By 1960, he had published taxonomic details of nematocyst structure and clinical envenomation details consequent upon stings by Physalia, Cyanea, Chironex, Chiropsalmus and Carukia. This paper is a précis of the chronology of his life, contributions and influence. PMID:17070882

Pearn, John; Fenner, Peter

2006-12-01

251

Sneaker “jack” males outcompete dominant “hooknose” males under sperm competition in Chinook salmon (Oncorhynchus tshawytscha)  

PubMed Central

In a variety of taxa, males deploy alternative reproductive tactics to secure fertilizations. In many species, small “sneaker” males attempt to steal fertilizations while avoiding encounters with larger, more aggressive, dominant males. Sneaker males usually face a number of disadvantages, including reduced access to females and the higher likelihood that upon ejaculation, their sperm face competition from other males. Nevertheless, sneaker males represent an evolutionarily stable strategy under a wide range of conditions. Game theory suggests that sneaker males compensate for these disadvantages by investing disproportionately in spermatogenesis, by producing more sperm per unit body mass (the “fair raffle”) and/or by producing higher quality sperm (the “loaded raffle”). Here, we test these models by competing sperm from sneaker “jack” males against sperm from dominant “hooknose” males in Chinook salmon. Using two complementary approaches, we reject the fair raffle in favor of the loaded raffle and estimate that jack males were ?1.35 times as likely as hooknose males to fertilize eggs under controlled competitive conditions. Interestingly, the direction and magnitude of this skew in paternity shifted according to individual female egg donors, suggesting cryptic female choice could moderate the outcomes of sperm competition in this externally fertilizing species. PMID:24455130

Young, Brent; Conti, David V; Dean, Matthew D

2013-01-01

252

Continuing its travels, the original "On the Road" manuscript returns to Jack Kerouac's birthplace  

NSDL National Science Digital Library

"On the Road's" Bumpy Journey [Real Player]http://www.wbur.org/news/2007/68102_20070622.aspJack Kerouac: From Lowell to Legendhttp://extras.lowellsun.com/kerouac/C-SPAN: American Writers II, Jack Kerouac [Real Player]http://www.americanwriters.org/classroom/videolesson/clips35_kerouac.asp#NPR: Jack Kerouac's On the Road, Present at the Creation [Real Player]http://www.npr.org/programs/morning/features/patc/ontheroad/Kerouac Kalendarhttp://www.wordsareimportant.com/calendar.htmThe Art of Fiction: Jack Kerouac [pdf]http://www.theparisreview.com/media/4260_KEROUAC.pdfOn October 21, 1969, Jack Kerouac, the prolific American author died of an internal hemorrhage in St. Petersburg, Florida. Despite Kerouac's desire to be known primarily as a writer, many remember him because of his iconic status as a leader of the so-called "Beat Generation". Perhaps his best known work is his sprawling, stream of consciousness travel narrative, "On The Road". Recently, the book celebrated its fiftieth anniversary in print, and while Kerouac has been gone for almost forty years, the original manuscript of this book continues to travel through the United States. The entire work is contained on a 120-foot scroll, consisting of a series of single-spaced typed twelve-foot long rolls of paper that have been taped together. This remarkable document has been traveling around the country for the past few years at the request of its owner, Jim Irsay, who also happens to own the Indianapolis Colts. Recently, the scroll went home, in a matter of speaking, as it began a four-month residency at the Boot Cotton Mills Museum in Lowell, Massachusetts. As Lowell is Kerouac's birthplace, it seems fitting that it will get a chance to be around the places and milieu that informed a good deal of his own writings, musings, and reflections. The first link will take users to a news story from the CBC about a recent marathon reading of "On The Road" which took place this past Saturday at Naropa University in Boulder, Colorado. Created by WBUR in Boston, the next link leads to an audio news piece about getting "On the Road" published. Moving along, the third link leads to a very interactive feature about Kerouac's life in Lowell from the Lowell Sun. Here, visitors can view some great photographic slide shows, take a glance at a walking tour, and read some articles about Kerouac's legacy. The fourth link leads to a two-hour presentation from C-SPAN's American Writers II series that features interviews with historians, Kerouac's friends, and others. The fifth link whisks visitors away to a multimedia site created by NPR that contains excerpts from "On the Road", clips from conversations with Kerouac and his friend Neal Cassady, and a short video clip of Kerouac reading his work while Steve Allen tickles the ivories. The sixth link leads to the very comprehensive Kerouac Kalendar. Here, visitors can read all about the scroll's upcoming stops, conferences, readings, and all other events dealing with Kerouac. The last link leads to a long interview with Kerouac conducted by The Paris Review in 1968.

2007-01-01

253

Feature-Based CAD Interoperability Jeffrey McPherson1, Felicia Cordeiro2, John Altidor1, Dr. Jack Wileden1,  

E-print Network

Feature-Based CAD Interoperability Jeffrey McPherson1, Felicia Cordeiro2, John Altidor1, Dr. Jack-aided design (CAD) systems is an essential capability when working in a collaborative engineering environment. The goal of this research is to make two popular 3D CAD systems, PTC Pro/Engineer and DS Solid

Mountziaris, T. J.

254

Study on the design method of the jack-up's x-type cantilever allowable load nephogram  

NASA Astrophysics Data System (ADS)

The extending of a cantilever and transverse moving of a drilling floor enable the jack-up to operate in several well positions after the Jack-up has pitched. The cantilever allowable load nephogram is the critical reference which can evaluate the jack-up's drilling ability, design the cantilever structure and instruct a jack-up manager to make the operations safe. The intent of this paper is to explore the interrelationships between the cantilever position, drilling floor and the loads including wind force, the stand set-back weight etc., through analyzing the structure and load characteristics of the x-type cantilever and the simplified mechanics model with the restriction of the maximum moment capacity of the cantilever single side beam. Referring to several typical position designs load values, the cantilever allowable load nephogram is obtained by using the suitable interpolation method. The paper gives a method for cantilever allowable load design, which is proved reliable and effective by the calculation example.

Zhu, Yazhou; Sun, Chengmeng; Qin, Hongde; Jiang, Bin; Fan, Yansong

2014-09-01

255

Multifactor Gaussian Process Models for Style-Content Separation Jack M. Wang jmwang@dgp.toronto.edu  

E-print Network

Multifactor Gaussian Process Models for Style-Content Separation Jack M. Wang jmwang novel animation from the model. 1. Introduction Using prior models of human motion to constrain as to simplify the process of character animation. The avail- ability of motion capture devices in recent years

Jepson, Allan D.

256

Magic Words, Magic Brush: The Art of William Butler and Jack Yeats. ArtsEdge Curricula, Lessons and Activities.  

ERIC Educational Resources Information Center

This curriculum unit, designed for grades 7-12, integrates various artistic disciplines with geography, history, social studies, media, and technology. This unit on William Butler Yeats, the writer, and Jack Yeats, the painter, seeks to immerse students in a study of the brothers as voices of Ireland and as two of the most renowned artists of the…

Karsten, Jayne

257

Dipole-Bound Anions of Glycine Based on the Zwitterion and Neutral Maciej Gutowski,* Piotr Skurski, and Jack Simons  

E-print Network

,* Piotr Skurski, and Jack Simons Contribution from the Materials Resources, Pacific Northwest National or theoretical proof of the thermody- namic stability of the zwitterion of an amino acid in the gas phase, newer. For instance, it was found that two water molecules can stabilize the zwitterion of glycine sufficiently

Simons, Jack

258

Determinants of gender in Jack-in-the-pulpit: the influence of plant size and reproductive history  

Microsoft Academic Search

Jack-in-the-pulpit, Arisaema triphyllum, is a perennial forest herb with the ability to change sex. At two sites in upstate New York, plant sex was correlated with plant size: males were smaller than females, nonflowering plants were smaller than males. Changes in plant size were accompanied by changes in sex. Sex change occurred quite frequently; at one site, 8% of nonflowering

Paulette Bierzychudek

1984-01-01

259

Characterizing the physical and genetic structure of the lodgepole pine × jack pine hybrid zone: mosaic structure and differential introgression  

PubMed Central

Understanding the physical and genetic structure of hybrid zones can illuminate factors affecting their formation and stability. In north-central Alberta, lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia) and jack pine (Pinus banksiana Lamb) form a complex and poorly defined hybrid zone. Better knowledge of this zone is relevant, given the recent host expansion of mountain pine beetle into jack pine. We characterized the zone by genotyping 1998 lodgepole, jack pine, and hybrids from British Columbia, Alberta, Saskatchewan, Ontario, and Minnesota at 11 microsatellites. Using Bayesian algorithms, we calculated genetic ancestry and used this to model the relationship between species occurrence and environment. In addition, we analyzed the ancestry of hybrids to calculate the genetic contribution of lodgepole and jack pine. Finally, we measured the amount of gene flow between the pure species. We found the distribution of the pine classes is explained by environmental variables, and these distributions differ from classic distribution maps. Hybrid ancestry was biased toward lodgepole pine; however, gene flow between the two species was equal. The results of this study suggest that the hybrid zone is complex and influenced by environmental constraints. As a result of this analysis, range limits should be redefined. PMID:23346232

Cullingham, Catherine I; James, Patrick M A; Cooke, Janice E K; Coltman, David W

2012-01-01

260

DARPA's HPCS Program: History, Models, Tools, Languages Jack Dongarra, University of Tennessee and Oak Ridge National Lab  

E-print Network

1 of 94 DARPA's HPCS Program: History, Models, Tools, Languages Jack Dongarra, University, DARPA Robert Lucas, USC Information Sciences Institute Ewing Lusk, Argonne National Laboratory Piotr of California ­ San Diego Abstract The historical context surrounding the birth of the DARPA High Productivity

Dongarra, Jack

261

Characterizing the physical and genetic structure of the lodgepole pine × jack pine hybrid zone: mosaic structure and differential introgression.  

PubMed

Understanding the physical and genetic structure of hybrid zones can illuminate factors affecting their formation and stability. In north-central Alberta, lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia) and jack pine (Pinus banksiana Lamb) form a complex and poorly defined hybrid zone. Better knowledge of this zone is relevant, given the recent host expansion of mountain pine beetle into jack pine. We characterized the zone by genotyping 1998 lodgepole, jack pine, and hybrids from British Columbia, Alberta, Saskatchewan, Ontario, and Minnesota at 11 microsatellites. Using Bayesian algorithms, we calculated genetic ancestry and used this to model the relationship between species occurrence and environment. In addition, we analyzed the ancestry of hybrids to calculate the genetic contribution of lodgepole and jack pine. Finally, we measured the amount of gene flow between the pure species. We found the distribution of the pine classes is explained by environmental variables, and these distributions differ from classic distribution maps. Hybrid ancestry was biased toward lodgepole pine; however, gene flow between the two species was equal. The results of this study suggest that the hybrid zone is complex and influenced by environmental constraints. As a result of this analysis, range limits should be redefined. PMID:23346232

Cullingham, Catherine I; James, Patrick M A; Cooke, Janice E K; Coltman, David W

2012-12-01

262

Enhanced Field Sites for Wheat Stem Sawfly Research Luther Talbert, Phil Bruckner, David Weaver, Jamie Sherman, Gregg Carlson, Jack  

E-print Network

Enhanced Field Sites for Wheat Stem Sawfly Research Luther Talbert, Phil Bruckner, David Weaver, Jamie Sherman, Gregg Carlson, Jack Martin Project Description Ongoing research related to the wheat stem, and in 2009 an initial large selection nursery was established for the spring wheat breeding project

Maxwell, Bruce D.

263

Historical wildlife dynamics on Dugway Proving Ground: population and disease trends in jack rabbits over two decades. [Lepus californicus  

Microsoft Academic Search

In an effort to determine whether US Army activities on the Dugway Proving Ground (DPG) have had an impact on resident wildlife, intensive studies have been conducted on the biology and ecology of the black-tailed jack rabbit (Lepus californicus) since 1965. in addition, the incidence of endemic diseases in several species of resident wildlife on the DPG have been studied

L. E. Eberhardt; P. Van Voris

1986-01-01

264

Direct Alkylation of Aldehydes via Photoredox Organocatalysis Jack A. Terrett, Michael D. Clift, and David W. C. MacMillan*  

E-print Network

Direct Alkylation of Aldehydes via Photoredox Organocatalysis Jack A. Terrett, Michael D. Clift, United States *S Supporting Information ABSTRACT: Direct -alkylation of saturated aldehydes has been of Michael acceptors to produce -alkyl aldehydes in a highly efficient manner. Furthermore, this redox

MacMillan, David W. C.

265

Looking Back at Dense Linear Algebra Software Piotr Luszczek1, Jakub Kurzak1, and Jack Dongarra1,2,3  

E-print Network

Looking Back at Dense Linear Algebra Software Piotr Luszczek1, Jakub Kurzak1, and Jack Dongarra1: the very topic of numerical linear algebra. Seemingly then, a set of efficient linear solvers could effect on the software for numerical linear algebra. The extraction of high percentages of peak

Dongarra, Jack

266

DNA Polymerase-Mediated DNA Synthesis on a TNA Template John C. Chaput, Justin K. Ichida, and Jack W. Szostak*  

E-print Network

DNA Polymerase-Mediated DNA Synthesis on a TNA Template John C. Chaput, Justin K. Ichida, and Jack TNA is capable of antiparallel, Watson-Crick base-pairing with complementary DNA, RNA, and TNA oligo- nucleotides.2 This property is remarkable, given that the TNA repeat unit is one atom shorter than that of DNA

Heller, Eric

267

The Jack Baskin School of Engineering In a rapidly changing world, the purpose of engineering remains constant: to use science  

E-print Network

. The world's challenges in energy, health, security and the environment require engineers who can apply quality of life and advance global health. We specialize in bioinformatics, robotics, electronic knowledge and leverage technology to benefit society. The Jack Baskin School of Engineering offers a rich

California at Santa Cruz, University of

268

International Conference on Geometry and Graphics, 1-5 August, 2004, Guangzhou, China ON JACK PHILLIP'S SPATIAL INVOLUTE GEARING  

E-print Network

ON JACK PHILLIP'S SPATIAL INVOLUTE GEARING Hellmuth STACHEL Vienna University of Technology, Vienna, AUSTRIA ABSTRACT This is a geometric approach to spatial involute gearing which has recently been geometric questions around this interesting type of gearing are discussed. Keywords: Spatial gearing

Stachel, Hellmuth

269

RSC Meeting Minutes 10/17/14 Present: Jack Fletcher, George Zouridakis, Richard Bond, Alan Burns, Stuart Dryer, Allan Jacobson,  

E-print Network

, but once the information is available, he'll compare UH to those institutions. Virginia CommonwealthRSC Meeting Minutes 10/17/14 Present: Jack Fletcher, George Zouridakis, Richard Bond, Alan Burns to the meeting and called the meeting to order. Approval of September Minutes: Dr. Fletcher asked members

Azevedo, Ricardo

270

Non-carbohydrate Inhibitors of the Lectin DC-SIGN M. Jack Borrok and Laura L. Kiessling*,,  

E-print Network

Non-carbohydrate Inhibitors of the Lectin DC-SIGN M. Jack Borrok and Laura L. Kiessling properties, we devised a high-throughput fluorescence-based competition assay. This assay afforded potent non-carbohydrate, small molecule inhibitors (IC50 values of 1.6-10 µM). These compounds block not only DC-SIGN-carbohydrate

Kiessling, Laura

271

The Effect of Topology on Estimates of Among-Site Rate Variation Jack Sullivan,* Kent E. Holsinger, Chris Simon  

E-print Network

The Effect of Topology on Estimates of Among-Site Rate Variation Jack Sullivan,* Kent E. Holsinger rate (Ts/Tv) influ- ence phylogenetic inference. We examine the effect of topology on estimates and Peromyscus by generating 100 random topologies and estimating these parameters using parsimony and maximum

Sullivan, Jack

272

From BlackJack to GOX: the transfer, test, and validation of the ROCSat-3 GPS occultation receiver  

NASA Technical Reports Server (NTRS)

ROCSat-3's primary instrument is the GPS Occultation Receiver (GOX) and is based on the Jet Propulsion Laboratory's (JPL) proven BlackJack GPS Receiver. The COSMIC GOX receivers will demonstrate an important new operational data type for near-real-time assimilation into weather models by providing over 2500 atmospheric profiles per day with a global distribution.

Farrington, Allen H.; Armatys, Michael; Bell, Bryan; Charles, Jeff; Lahmeyer, Chuck; Lee, Cynthia; Meehan, Tom; Munson, Tim; Robison, David; Srinivasan, Jeff; Stecheson, Ted; Young, Larry

2004-01-01

273

Carbon distribution and aboveground net primary production in aspen, jack pine, and black spruce stands in Saskatchewan and Manitoba, Canada  

Microsoft Academic Search

The objectives of this study are to (1) characterize the carbon (C) content, leaf area index, and aboveground net primary production (ANPP) for mature aspen, black spruce, and young and mature jack pine stands at the southern and northern Boreal Ecosystem-Atmosphere Study (BOREAS) areas and (2) compare net primary production and carbon allocation coefficients for the major boreal forest types

S. T. Gower; J. G. Vogel; J. M. Norman; C. J. Kucharik; S. J. Steele; T. K. Stow

1997-01-01

274

Short-term Effects of Harvest Technique and Mechanical Site Preparation on Arthropod Communities in Jack Pine Plantations  

Microsoft Academic Search

Arthropods play a key role in the functioning of forest ecosystems and contribute to biological diversity. However, the influence of current silvicultural practices on arthropod communities is little known in jack pine (Pinus banksiana) forests, a forest type comprising a major portion of the Canadian boreal forest. In this study, the effects of silvicultural treatments on arthropod communities were compared

M. Isabel Bellocq; Sandy M. Smith; Margaret E. Doka

2001-01-01

275

EFFECTS OF BOVINE AND CAPRINE MONTEREY JACK CHEESES FORTIFIED WITH MILK CALCIUM ON BONE MINERALIZATION IN RATS  

Technology Transfer Automated Retrieval System (TEKTRAN)

Bovine and caprine Monterey Jack cheeses were produced unfortified (cheese) or fortified with milk calcium (Ca) cheese. Five groups of male rats were fed a control diet or more of four experimental diets: bovine cheese diet, bovine Ca-cheese diet, caprine cheese diet, and caprine Ca-cheese diet to...

276

Hyping White Hopes: Press Agentry and Its Media Affiliations During the Era of Jack Johnson, 1908–1915  

Microsoft Academic Search

The social presence of African American boxing champion Jack Johnson stands out among the most controversial social and media issues of the early 20th century. This study examines the manner in which press agentry shaped and animated this 6-year historical episode. It portrays press agentry not merely in terms of personalities, but also in terms of a network of social

Phillip Hutchison

2011-01-01

277

Using Transom Jack in the Human Engineering Analysis of the Materials Science Research Rack-1 and Quench Module Insert  

NASA Technical Reports Server (NTRS)

This paper describes the human engineering analysis performed on the Materials Science Research Rack-1 and Quench Module Insert (MSRR-1/QMI) using Transom Jack (Jack) software. The Jack software was used to model a virtual environment consisting of the MSRR-1/QMI hardware configuration and human figures representing the 95th percentile male and 5th percentile female. The purpose of the simulation was to assess the human interfaces in the design for their ability to meet the requirements of the Pressurized Payloads Interface Requirements Document - International Space Program, Revision C (SSP 57000). Jack was used in the evaluation because of its ability to correctly model anthropometric body measurements and the physical behavior of astronauts working in microgravity, which is referred to as the neutral body posture. The Jack model allows evaluation of crewmember interaction with hardware through task simulation including but not limited to collision avoidance behaviors, hand/eye coordination, reach path planning, and automatic grasping to part contours. Specifically, this virtual simulation depicts the human figures performing the QMI installation and check-out, sample cartridge insertion and removal, and gas bottle drawer removal. These tasks were evaluated in terms of adequate clearance in reach envelopes, adequate accessibility in work envelopes, appropriate line of sight in visual envelopes, and accommodation of full size range for male and female stature maneuverability. The results of the human engineering analysis virtual simulation indicate that most of the associated requirements of SSP 57000 were met. However, some hardware design considerations and crew procedures modifications are recommended to improve accessibility, provide an adequate work envelope, reduce awkward body posture, and eliminate permanent protrusions.

Dunn, Mariea C.; Alves, Jeffrey R.; Hutchinson, Sonya L.

1999-01-01

278

Eurycomanone induce apoptosis in HepG2 cells via up-regulation of p53  

PubMed Central

Background Eurycomanone is a cytotoxic compound found in Eurycoma longifolia Jack. Previous studies had noted the cytotoxic effect against various cancer cell lines. The aim of this study is to investigate the cytotoxicity against human hepato carcinoma cell in vitro and the mode of action. The cytotoxicity of eurycomanone was evaluated using MTT assay and the mode of cell death was detected by Hoechst 33258 nuclear staining and flow cytometry with Annexin-V/propidium iodide double staining. The protein expression Bax, Bcl-2, p53 and cytochrome C were studied by flow cytometry using a spesific antibody conjugated fluorescent dye to confirm the up-regulation of p53 and Bax in cancer cells. Results The findings suggested that eurycomanone was cytotoxic on cancerous liver cell, HepG2 and less toxic on normal cells Chang's liver and WLR-68. Furthermore, various methods proved that apoptosis was the mode of death in eurycomanone-treated HepG2 cells. The characteristics of apoptosis including chromatin condensation, DNA fragmentation and apoptotic bodies were found following eurycomanone treatment. This study also found that apoptotic process triggered by eurycomanone involved the up-regulation of p53 tumor suppressor protein. The up-regulation of p53 was followed by the increasing of pro-apoptotic Bax and decreasing of anti-apoptotic Bcl-2. The increased of cytochrome C levels in cytosol also results in induction of apoptosis. Conclusion The data suggest that eurycomanone was cytotoxic on HepG2 cells by inducing apoptosis through the up-regulation of p53 and Bax, and down-regulation of Bcl-2. PMID:19508737

Zakaria, Yusmazura; Rahmat, Asmah; Pihie, Azimahtol Hawariah Lope; Abdullah, Noor Rain; Houghton, Peter J

2009-01-01

279

BOREAS RSS-4 1994 Jack Pine Leaf Biochemistry and Modeled Spectra in the SSA  

NASA Technical Reports Server (NTRS)

The BOREAS RSS-4 team focused its efforts on deriving estimates of LAI and leaf chlorophyll and nitrogen concentrations from remotely sensed data for input into the Forest BGC model. This data set contains measurements of jack pine (Pinus banksiana) needle biochemistry from the BOREAS SSA in July and August 1994. The data contain measurements of current and year-1 needle chlorophyll, nitrogen, lignin, cellulose, and water content for the OJP flux tower and nearby auxiliary sites. The data have been used to test a needle reflectance and transmittance model, LIBERTY (Dawson et al., in press). The source code for the model and modeled needle spectra for each of the sampled tower and auxiliary sites are provided as part of this data set. The LIBERTY model was developed and the predicted spectral data generated to parameterize a canopy reflectance model (North, 1996) for comparison with AVIRIS, POLDER, and PARABOLA data. The data and model source code are stored in ASCII files.

Hall, Forrest G. (Editor); Nickeson, Jaime (Editor); Plummer, Stephen; Lucas, Neil; Dawson, Terry

2000-01-01

280

Twenty-seven year old jack-up converted to a MOPU in 122 days  

SciTech Connect

The conversion of the 27-year-old jack up MODU Gulftide to a Mobile Offshore Production Unit (MOPU) was accomplished on a very fast-track schedule at a US Gulf Coast shipyard. The reactivation of the long-term stacked rig, its conversion, mobilization to West Africa and installation were accomplished in a period of less than six months during the spring and summer of 1995. This paper outlines the requirements for this type of conversion process, review the permitting, classification, flagging and certification involved, and describes the principal activities and workscope in detail associated with the conversion project, dry-tow mobilization and installation. The general approaches taken to this conversion and the project management techniques applied to it proved highly successful and are suitable for application to a wide range of similar projects.

Childers, M.A.; Spottswood, R.; Lovaas, W.

1996-12-31

281

Ficus deltoidea Jack: A Review on Its Phytochemical and Pharmacological Importance  

PubMed Central

Ficus deltoidea Jack (Moraceae) has had a long history of use in traditional medicine among the Malays to alleviate and heal ailments such as sores, wounds, and rheumatism and as an after-birth tonic and an antidiabetic drug. Modern pharmacological studies demonstrated that this plant has a wide variety of beneficial attributes for human health. Despite its importance, a review of this species has not been published in the scientific literature to date. Here, we review and summarize the historic and current literature concerning the botany, traditional uses, phytochemistry, pharmacological effects, and toxicity of this wonder plant. This summary could be beneficial for future research aiming to exploit the therapeutic potential of this useful, medicinal species. PMID:24772185

Bunawan, Hamidun; Amin, Noriha Mat; Bunawan, Siti Noraini; Baharum, Syarul Nataqain; Mohd Noor, Normah

2014-01-01

282

[Malignant narcissism and sexual homicide--exemplified by the Jack Unterweger case].  

PubMed

With the syndrome of malignant narcissism, which is characterised by narcissistic personality disorder, anti-social behaviour, sadism and a marked tendency to paranoid reactions, Kernberg (1985, 1996) describes an independent form of pathological narcissism. According to Stone (1996) this is found in many mass-murderers and serial killers. On the basis of the example of Jack Unterweger the connection between malignant narcissism and sexual offence is discussed as to psychodynamic development, personality structure and psychopathology. Unterweger, who was convicted to lifelong imprisonment in 1976 for sadistic sexual murder, became a wellknown writer in prison and was released prematurely in 1990 as the Austria case of successful rehabilitation. As stated in the sentence passed against him he killed 11 prostitutes in Europe and the USA within the next 18 months, but never pleaded guilty. Psychiatric examination revealed numerous elements of malignant narcissism and the constellation of his development and life was typical of serial offenders. PMID:10489586

Haller, R

1999-01-01

283

The Jack Rabin Collection of Alabama Civil Rights and Southern Activists  

NSDL National Science Digital Library

Jack Rabin was a faculty member at a number of institutions during his long academic career, and he was intimately involved with certain aspects of the civil rights movement in the 1960s. During time spent in Alabama he worked with the organizers of the Montgomery Bus Boycott. He also accumulated a tremendous collection of photos and interviews related to this event and others. This online collection from the Pennsylvania State University Libraries brings together many of these documents. Visitors can get started here by watching a historic interview with Stokely Carmichael or watching an excerpt from the Selma March in 1965. Also, visitors are encouraged to search the collection, read a biography of Rabin, and peruse the finding aid.

2012-05-18

284

Jack Rabbit Pretest 2021E PT7 Photonic Doppler Velocimetry Data Volume 7 Section 1  

SciTech Connect

The Jack Rabbit Pretest (PT) 2021E PT7 experiment was fired on April 3, 2008 at the Contained Firing Facility, Site 300, Lawrence Livermore National Laboratory. This experiment is part of an effort to determine the properties of LX-17 in a regime where corner-turning behavior and dead-zone formation are not well understood. Photonic Doppler Velocimetry (PDV) measured diagnostic plate velocities confirming the presence of a persistent LX-17 dead-zone formation and the resultant impulse gradient applied under the diagnostic plate. The Jack Rabbit Pretest 2021E PT7, 160 millimeter diameter experiment returned data on all eight PDV probes. The probes measured on the central axis and at 20, 30, 35, 45, 55, 65, 75 millimeters from the central axis. The experiment was shot at an ambient room temperature of 65 degrees Fahrenheit. The PDV earliest signal extinction was 50.7 microseconds at 45 millimeters. The latest PDV signal extinction time was 65.0 microseconds at 20 millimeters. The measured velocity ranged from meters per second to thousands of meters per second. First detonation wave induced jump-off was measured at 55 millimeters and at 15.2 microseconds. The PDV data provided an unambiguous indication of dead-zone formation and an impulse gradient applied to the diagnostic plate. The central axis had a last measured velocity of 1447 meters per second. At 65 millimeters the last measured velocity was 2360 meters per second. The low-to-high velocity ratio was 0.61. Velocity data was integrated to compute diagnostic plate cross section profiles. Velocity data was differentiated to compute a peak pressure under the diagnostic plate at the central axis of 49 kilobars at 23.3 microseconds. Substantial motion (>1 m/s) of the diagnostic plate over the dead-zone is followed by detonation region motion within approximately 4.6 microseconds.

Hart, M M; Strand, O T; Bosson, S T; Bonner, R A; Hester, D M

2008-06-25

285

Jack Rabbit Pretest 2021E PT4 Photonic Doppler Velocimetry Data Volume 4 Section 1  

SciTech Connect

The Jack Rabbit Pretest (PT) 2021E PT4 was fired on March 19, 2008 at the Contained Firing Facility, Site 300, Lawrence Livermore National Laboratory. This experiment is part of an effort to determine the properties of LX-17 in a regime where corner-turning behavior and dead-zone formation are not well understood. Photonic Doppler Velocimetry (PDV) measured diagnostic plate velocities confirming the presence of a persistent LX-17 dead-zone formation and the resultant impulse gradient applied under the diagnostic plate. The Jack Rabbit Pretest 2021E PT4, 120 millimeter diameter experiment returned data on all eight PDV probes. The probes measured on the central axis and at 10, 20, 25, 30, 35, 40, 50 millimeters from the central axis. The experiment was shot at an ambient room temperature of 64 degrees Fahrenheit. The earliest PDV signal extinction was 44.9 microseconds at 30 millimeters. The latest PDV signal extinction time was 69.5 microseconds at 10 millimeters. The measured velocity ranged from meters per second to thousands of meters per second. First detonation wave induced jump-off was measured at 50 millimeters at 13.3 microseconds. The PDV data provided an unambiguous indication of dead-zone formation and an impulse gradient applied to the diagnostic plate. The central axis had a last measured velocity of 1558 meters per second. At 40 millimeters the last measured velocity was 2019 meters per second. The low-to-high velocity ratio was 0.77. Velocity data was integrated to compute diagnostic plate cross section profiles. Velocity data was differentiated to compute a peak pressure under the diagnostic plate at the central axis of 98.6 kilobars at 15.0 microseconds. Substantial motion (>1 m/s) of the diagnostic plate over the dead-zone is followed by detonation region motion within approximately 0.7 microseconds.

Hart, M M; Strand, O T; Bosson, S T; Bonner, R A; Hester, D M

2008-06-25

286

Diamonds in Earth?s oldest zircons from Jack Hills conglomerate, Australia, are contamination  

NASA Astrophysics Data System (ADS)

The earliest period of Earth history is the Hadean era (4600-4000 Myr) but to date no rocks are known to be preserved from this time. However, abundant detrital zircons from the Archean Jack Hills conglomerate complex of Western Australia have been found with dates in excess of 4000 Myr and there is a significant literature concerning these zircons from which abundant geochemical and mineralogical information has been obtained. The essence of what has been derived from these zircons and their inclusions concerning conditions of formation is that the zircons crystallized from granitic melts at shallow depths. However, in the last decade two papers were published reporting microdiamond inclusions in a suite of zircons ranging in age from ?4200 Myr to ?3000 Myr, implying much greater depths and repeated recycling and re-incorporation of diamonds into zircons over at least 1200 Myr. To complicate the issue, subsequent to this discovery, another study surveyed the inclusion suite in a very large sample (>400) of Jack Hills zircons (JHZs) and found no diamonds but abundant inclusions that are consistent with the previous consensus. It is important, therefore, to verify whether or not the reported JHZ diamonds could be laboratory contamination because diamond abrasive paste was used for sample preparation. Here, we report very-high-resolution re-examination of the original diamond-bearing specimens that were kindly provided to us by the authors (see Acknowledgements). We confirm the presence of diamonds in their zircons but the diamonds we find are fragments of polishing compound. These results combined with the lack of diamonds in any other samples of JHZs strongly suggest that there are no indigenous diamonds in the JHZs.

Dobrzhinetskaya, Larissa; Wirth, Richard; Green, Harry

2014-02-01

287

Proteus mirabilis urease: nucleotide sequence determination and comparison with jack bean urease.  

PubMed Central

Proteus mirabilis, a common cause of urinary tract infection, produces a potent urease that hydrolyzes urea to NH3 and CO2, initiating kidney stone formation. Urease genes, which were localized to a 7.6-kilobase-pair region of DNA, were sequenced by using the dideoxy method. Six open reading frames were found within a region of 4,952 base pairs which were predicted to encode polypeptides of 31.0 (ureD), 11.0 (ureA), 12.2 (ureB), 61.0 (ureC), 17.9 (ureE), and 23.0 (ureF) kilodaltons (kDa). Each open reading frame was preceded by a ribosome-binding site, with the exception of ureE. Putative promoterlike sequences were identified upstream of ureD, ureA, and ureF. Possible termination sites were found downstream of ureD, ureC, and ureF. Structural subunits of the enzyme were encoded by ureA, ureB, and ureC and were translated from a single transcript in the order of 11.0, 12.2, and 61.0 kDa. When the deduced amino acid sequences of the P. mirabilis urease subunits were compared with the amino acid sequence of the jack bean urease, significant amino acid similarity was observed (58% exact matches; 73% exact plus conservative replacements). The 11.0-kDa polypeptide aligned with the N-terminal residues of the plant enzyme, the 12.2-kDa polypeptide lined up with internal residues, and the 61.0-kDa polypeptide matched with the C-terminal residues, suggesting an evolutionary relationship of the urease genes of jack bean and P. mirabilis. PMID:2687233

Jones, B D; Mobley, H L

1989-01-01

288

Jack Rabbit Pretest 2021E PT3 Photonic Doppler Velocimetry Data Volume 3 Section 1  

SciTech Connect

The Jack Rabbit Pretest (PT) 2021E PT3 was fired on March 12, 2008 at the Contained Firing Facility, Site 300, Lawrence Livermore National Laboratory. This experiment is part of an effort to determine the properties of LX-17 in a regime where corner-turning behavior and dead-zone formation are not well understood. Photonic Doppler Velocimetry (PDV) measured diagnostic plate velocities confirming the presence of a persistent LX-17 dead-zone formation and the resultant impulse gradient applied under the diagnostic plate. The Jack Rabbit Pretest 2021E PT3, 120 millimeter diameter experiment returned data on all eight PDV probes. The probes measured on the central axis and at 10, 20, 25, 30, 35, 40, 50 millimeters from the central axis. The experiment was shot at an ambient room temperature of 65 degrees Fahrenheit. The earliest PDV signal extinction was 41.7 microseconds at 30 millimeters. The latest PDV signal extinction time was 65.0 microseconds at 10 millimeters. The measured velocity ranged from meters per second to thousands of meters per second. First detonation wave induced jump-off was measured at 40 millimeters at 10.9 microseconds. The PDV data provided an unambiguous indication of dead-zone formation and an impulse gradient applied to the diagnostic plate. The central axis had a last measured velocity of 1636 meters per second. At 40 millimeters the last measured velocity was 2056 meters per second. The low-to-high velocity ratio was 0.80. Velocity data was integrated to compute diagnostic plate cross section profiles. Velocity data was differentiated to compute a peak pressure under the diagnostic plate at the central axis of 64.6 kilobars at 15.7 microseconds. Substantial motion (>1 m/s) of the diagnostic plate over the dead-zone is followed by detonation region motion within approximately 2.2 microseconds.

Hart, M M; Strand, O T; Bosson, S T; Bonner, R A; Hester, D M

2008-06-25

289

Jack Rabbit Pretest 2021E PT6 Photonic Doppler Velocimetry Data Volume 6 Section 1  

SciTech Connect

The Jack Rabbit Pretest (PT) 2021E PT6 experiment was fired on April 1, 2008 at the Contained Firing Facility, Site 300, Lawrence Livermore National Laboratory. This experiment is part of an effort to determine the properties of LX-17 in a regime where corner-turning behavior and dead-zone formation are not well understood. Photonic Doppler Velocimetry (PDV) measured diagnostic plate velocities confirming the presence of a persistent LX-17 dead-zone formation and the resultant impulse gradient applied under the diagnostic plate. The Jack Rabbit Pretest 2021E PT6, 160 millimeter diameter experiment returned data on all eight PDV probes. The probes measured on the central axis and at 20, 30, 35, 45, 55, 65, 75 millimeters from the central axis. The experiment was shot at an ambient room temperature of 65 degrees Fahrenheit. The earliest PDV signal extinction was 54.2 microseconds at 30 millimeters. The latest PDV signal extinction time was 64.5 microseconds at the central axis. The measured velocity ranged from meters per second to thousands of meters per second. First detonation wave induced jump-off was measured at 55 millimeters at 14.1 microseconds. The PDV data provided an unambiguous indication of dead-zone formation and an impulse gradient applied to the diagnostic plate. The central axis had a last measured velocity of 1860 meters per second. At 55 millimeters the last measured velocity was 2408 meters per second. The low-to-high velocity ratio was 0.77. Velocity data was integrated to compute diagnostic plate cross section profiles. Velocity data was differentiated to compute a peak pressure under the diagnostic plate at the central axis of 227 kilobars at 20.1 microseconds, indicating a late time chemical reaction in the LX-17 dead-zone. Substantial motion (>1 m/s) of the diagnostic plate over the dead-zone is followed by detonation region motion within approximately 1.7 microseconds.

Hart, M M; Strand, O T; Bosson, S T; Bonner, R A; Hester, D M

2008-06-25

290

Mid-Proterozoic detrital zircons and the depositional history of the Jack Hills (Narryer Gneiss Complex, Western Australia)  

NASA Astrophysics Data System (ADS)

Quartz-biotite schists ("metaconglomerates" s.l.) in the Jack Hills outcrops of the Narryer Terrane of Western Australia host detrital >4 Ga zircons. These rocks are presumed to have been deposited at about 3 Ga and subsequently experienced metamorphism and granite intrusion at 2.45-2.6 Ga. Protoliths of the oldest detrital zircon population (>3.8 Ga) have not yet been identified, and the post-2.6 Ga history of the Jack Hills remains murky. Rare metavolcanic units are documented at ca. 1.8-1.9 Ga. Some metasediments near the Hadean zircon "discovery" site that are apparently young enough to have incorporated mid-Proterozoic detrital zircons are evidence of further geologic activity, although it is possible that these rocks were tectonically juxtaposed later. To further resolve the Proterozoic history of the Jack Hills, we report U-Pb age data for 60 detrital zircons extracted from two quartzites from the eastern Jack Hills (~50 km distant from the "discovery" site of Hadean zircons); in this sample suite 26 concordant zircons range in age from 0.168-3.49 Ga, with an age peak at ca. 2.6 Ga and a scattering of ages from 1.06-2.0 Ga. Zircon sources <1.8 Ga have not so far been identified in the Narryer Terrane and may point to far-field sediment transport. Several ca. 1.07 Ga zircons may derive from the Warakurna Large Igneous Province of the same age, which extends through much of central and Western Australia. One concordant zircon with a 206Pb/238U age of 0.166±6 Ga displays a patchy internal texture indicative of alteration; all other concordant grains are >1.06 Ga. Only 2 concordant zircons display ages >3 Ga, unlike the dominant mid-Archean signature from other reported Proterozoic sediments in the Jack Hills. All told, these quartzites display a significantly different provenance than other previously studied units from the terrane, with decreased importance of mid-Archean zircon sources and significantly younger (<1.06 Ga) ages of sedimentation than previously recognized. If the various quartzites are autochthonous, the absence of mid-Archean zircons despite the units' current proximity to the mid-Archean Narryer Gneiss Complex, as well as the likely sourcing of Warakurna LIP detritus, would appear to have implications for paleogeographic reconstructions of the Jack Hills region.

Bell, E. A.; Harrison, T. M.; Mojzsis, S. J.

2012-12-01

291

Comparison of lodgepole and jack pine resin chemistry: implications for range expansion by the mountain pine beetle, Dendroctonus ponderosae (Coleoptera: Curculionidae)  

PubMed Central

The mountain pine beetle, Dendroctonus ponderosae, is a significant pest of lodgepole pine in British Columbia (BC), where it has recently reached an unprecedented outbreak level. Although it is native to western North America, the beetle can now be viewed as a native invasive because for the first time in recorded history it has begun to reproduce in native jack pine stands within the North American boreal forest. The ability of jack pine trees to defend themselves against mass attack and their suitability for brood success will play a major role in the success of this insect in a putatively new geographic range and host. Lodgepole and jack pine were sampled along a transect extending from the beetle’s historic range (central BC) to the newly invaded area east of the Rocky Mountains in north-central Alberta (AB) in Canada for constitutive phloem resin terpene levels. In addition, two populations of lodgepole pine (BC) and one population of jack pine (AB) were sampled for levels of induced phloem terpenes. Phloem resin terpenes were identified and quantified using gas chromatography. Significant differences were found in constitutive levels of terpenes between the two species of pine. Constitutive ?-pinene levels – a precursor in the biosynthesis of components of the aggregation and antiaggregation pheromones of mountain pine beetle – were significantly higher in jack pine. However, lower constitutive levels of compounds known to be toxic to bark beetles, e.g., 3-carene, in jack pine suggests that this species could be poorly defended. Differences in wounding-induced responses for phloem accumulation of five major terpenes were found between the two populations of lodgepole pine and between lodgepole and jack pine. The mountain pine beetle will face a different constitutive and induced phloem resin terpene environment when locating and colonizing jack pine in its new geographic range, and this may play a significant role in the ability of the insect to persist in this new host. PMID:24688833

Pitt, Caitlin; Carroll, Allan L.; Lindgren, B. Staffan; Huber, Dezene P.W.

2014-01-01

292

Ontogeny of anti-predator behavior in hatchery-reared jack mackerel Trachurus japonicus larvae and juveniles: patchiness formation, swimming capability, and interaction with jellyfish  

Microsoft Academic Search

Laboratory rearing and behavioral observations of larval and juvenile jack mackerel Trachurus japonicus were conducted to elucidate their life-history traits with emphasis on the interaction with the moon jellyfish Aurelia aurita. Jack mackerel were raised from naturally spawned fertilized eggs and they attained 10.3±0.7 (mean±standard deviation) mm\\u000a in body length (BL) by 30 days post hatching (dph) and 26.6±1.8 mm

Reiji Masuda

2006-01-01

293

Comparison of lodgepole and jack pine resin chemistry: implications for range expansion by the mountain pine beetle, Dendroctonus ponderosae (Coleoptera: Curculionidae).  

PubMed

The mountain pine beetle, Dendroctonus ponderosae, is a significant pest of lodgepole pine in British Columbia (BC), where it has recently reached an unprecedented outbreak level. Although it is native to western North America, the beetle can now be viewed as a native invasive because for the first time in recorded history it has begun to reproduce in native jack pine stands within the North American boreal forest. The ability of jack pine trees to defend themselves against mass attack and their suitability for brood success will play a major role in the success of this insect in a putatively new geographic range and host. Lodgepole and jack pine were sampled along a transect extending from the beetle's historic range (central BC) to the newly invaded area east of the Rocky Mountains in north-central Alberta (AB) in Canada for constitutive phloem resin terpene levels. In addition, two populations of lodgepole pine (BC) and one population of jack pine (AB) were sampled for levels of induced phloem terpenes. Phloem resin terpenes were identified and quantified using gas chromatography. Significant differences were found in constitutive levels of terpenes between the two species of pine. Constitutive ?-pinene levels - a precursor in the biosynthesis of components of the aggregation and antiaggregation pheromones of mountain pine beetle - were significantly higher in jack pine. However, lower constitutive levels of compounds known to be toxic to bark beetles, e.g., 3-carene, in jack pine suggests that this species could be poorly defended. Differences in wounding-induced responses for phloem accumulation of five major terpenes were found between the two populations of lodgepole pine and between lodgepole and jack pine. The mountain pine beetle will face a different constitutive and induced phloem resin terpene environment when locating and colonizing jack pine in its new geographic range, and this may play a significant role in the ability of the insect to persist in this new host. PMID:24688833

Clark, Erin L; Pitt, Caitlin; Carroll, Allan L; Lindgren, B Staffan; Huber, Dezene P W

2014-01-01

294

Photosynthesis, nitrogen-use efficiency, and water-use efficiency of jack pine seedlings in competition with four boreal forest plant species  

Microsoft Academic Search

The objective of this study was to understand the mechanism underlying nitrogen (N) and water competition between jack pine (Pinus banksiana Lamb.) and four boreal forest species. Large-leaved aster (Aster macrophyllus L.), Canada blue-joint grass (Calamagrostis canadensis(Michx.) Beauv.), trembling aspen (Populus tremuloides (Michx.), and red raspberry (Rubus idaeus L.) were planted at a range of densities (0-8 plants\\/m2) with jack

Darren E. Robinson; Robert G. Wagner; F. Wayne Bell; Clarence J. Swanton

2001-01-01

295

Effect of soil set-up on the capacity of jacked concrete pipe piles in mixed soils  

Microsoft Academic Search

The increase in capacity of displacement piles with time after installation is typically known as soil\\/pile set-up. A full-scale\\u000a field test is carried out to observe the set-up effect for open-ended concrete pipe piles jacked into mixed soils. Both the\\u000a total capacity and the average unit shaft resistance increase approximately linearly with logarithmic time. The average increase\\u000a rate for unit

Jun-wei Liu; Zhong-miao Zhang; Feng Yu; Cun-gang Lin

2011-01-01

296

Hadean crustal evolution revisited: New constraints from Pb-Hf isotope systematics of the Jack Hills zircons  

NASA Astrophysics Data System (ADS)

Detrital zircon crystals from the Jack Hills metasedimentary belt, Western Australia, are the only surviving vestiges of Hadean crust and represent an extraordinary archive into the nature of the early Earth. We report the results of an in situ isotopic study of 68 Jack Hills zircons in which the Hf and Pb isotope ratios were measured concurrently, allowing a better integration of isotope tracer information ( 176Hf/ 177Hf) with crystallization age ( 207Pb/ 206Pb). These data are augmented by Hf isotope data from zircons of the surrounding Narryer gneisses (3.65-3.30 Ga) and from Neoarchaean granites that intrude the Jack Hills belt. The detrital zircons define a subchondritic ?Hf-time array that attests to a far simpler evolution for the Hadean Earth than claimed by recent studies. This evolution is consistent with the protracted intra-crustal reworking of an enriched, dominantly mafic protolith that was extracted from primordial mantle at 4.4-4.5 Ga, perhaps during the solidification of a terrestrial magma ocean. There is no evidence for the existence of strongly depleted Hadean mantle, or for juvenile input into the parental magmas to the Jack Hills zircons. This simple Hf isotope evolution is difficult to reconcile with modern plate tectonic processes. Strongly unradiogenic Hf isotope compositions of zircons from several Archaean gneiss terranes, including the Narryer and Acasta gneisses, suggest that Hadean source reservoirs were tapped by granitic magmas throughout the Archaean. This supports the notion of a long-lived and globally extensive Hadean protocrust that may have comprised the nuclei of some Archaean cratons.

Kemp, A. I. S.; Wilde, S. A.; Hawkesworth, C. J.; Coath, C. D.; Nemchin, A.; Pidgeon, R. T.; Vervoort, J. D.; DuFrane, S. A.

2010-07-01

297

Changes in volatile compounds of Habanero chile pepper ( Capsicum chinense Jack. cv. Habanero) at two ripening stages  

Microsoft Academic Search

The steam volatile components of Yucatan Habanero chile pepper (Capsicum chinense Jack. cv. Habanero) at two ripening stages (green and orange) were analyzed using GC and GC\\/MS. Both samples had several compounds in common. One hundred and two compounds were identified, from which (E)-2-hexenal, hexyl 3-methylbutanoate, (Z)-3-hexenyl 3-methylbutanoate, hexyl pentanoate, 3,3-dimethylcyclohexanol, and hexadecanoic acid were found to be the major

Jorge Pino; Enrique Sauri-Duch; Rolando Marbot

2006-01-01

298

Characterization of total capsaicinoids, colour and volatile compounds of Habanero chilli pepper ( Capsicum chinense Jack.) cultivars grown in Yucatan  

Microsoft Academic Search

Total capsaicinoids, colour and volatile compounds of 10 Habanero chilli pepper (Capsicum chinense Jack.) cultivars grown in Yucatan, grouped by their colours: four red, five orange and one brown, were determined. The content of capsaicinoids, responsible for the pungency of chilli peppers, varied between 41.8 and 65.9mgg?1 dry fruit. Mean concentration of orange cultivars was 55.0mgg?1, while red cultivars had

Jorge Pino; Marilú González; Liena Ceballos; Alma Rosa Centurión-Yah; Jorge Trujillo-Aguirre; Luis Latournerie-Moreno; Enrique Sauri-Duch

2007-01-01

299

Review of the crevalle jacks, Caranx hippos complex (Teleostei: Carangidae), with a description of a new species from West Africa  

USGS Publications Warehouse

The Caranx hippos species complex comprises three extant species: crevalle jack (Caranx hippos) (Linnaeus, 1766) from both the western and eastern Atlantic oceans; Pacific crevalle jack (Caranx caninus) Gu??nther, 1868 from the eastern Pacific Ocean; and longfin crevalle jack (Caranx fischeri) new species, from the eastern Atlantic, including the Mediterranean Sea and Ascension Island. Adults of all three species are superficially similar with a black blotch on the lower half of the pectoral fin, a black spot on the upper margin of opercle, one or two pairs of enlarged symphyseal canines on the lower jaw, and a similar pattern of breast squamation. Each species has a different pattern of hyperostotic bone development and anal-fin color. The two sympatric eastern Atlantic species also differ from each other in number of dorsal- and anal-fin rays, and in large adults of C. fischeri the lobes of these fins are longer and the body is deeper. Caranx hippos from opposite sides of the Atlantic are virtually indistinguishable externally but differ consistently in the expression of hyperostosis of the first dorsal-fin pterygiophore. The fossil species Caranx carangopsis Steindachner 1859 appears to have been based on composite material of Trachurus sp. and a fourth species of the Caranx hippos complex. Patterns of hyperostotic bone development are compared in the nine (of 15 total) species of Caranx sensu stricto that exhibit hyperostosis.

Smith-Vaniz, W.F.; Carpenter, K.E.

2007-01-01

300

Assessment of Drought Constraints on Transpiration and Canopy Conductance in Mature Aspen and Jack Pine Stands  

NASA Astrophysics Data System (ADS)

Soil water content can exert an important control on tree growth processes, an important consideration for the boreal forest in Central Canada where climate change may bring about increased drought frequency. Empirical evidence has shown the strong coupling between conductance and photosynthesis, and the effect that drought can have on both variables. In models, canopy conductance and carbon uptake are often explicitly related through feedback loops that may or may not include the consideration of soil water content. Models that are aimed towards landscape-level applications usually require the scaling up of response functions to coarse spatial and temporal scales. Although at such scales, crude models of stomatal response to environmental variables are sufficient, empirical data for parameter estimates or for validation of response functions on such scales are difficult to obtain. From 2001 to 2003, the Canadian Prairies and adjacent boreal forest were subjected to a severe drought that affected two sites over which continuous measurements of ecosystem exchanges of CO2 and water vapour had been made for a number of years: an aspen stand on a sandy clay loam soil, and a jack pine stand on coarse sand. The continuous measurements of CO2 exchanges provided an ecosystem-level experiment of drought impacts on canopy conductance. The objectives of this work were therefore to 1) determine the rooting depth at these sites based on measurements of transpiration and soil moisture 2) quantify the relationship between soil water content and canopy conductance for contrasting forested sites 3) determine whether these relationships were modified by the temporal scale at which they were analysed and 4) verify the applicability of published relationships for quantifying the impact of drought on gas exchanges. The results show that depth of water uptake (rooting depth) varies with soil texture, and tends to be shallower in coarser-textured soils. In this large drought event, soil water content was the most important variable in explaining the variability of canopy conductance of the aspen stand, but was far less important for the jack pine site where extreme drainage maintained the stand under near permanent drought conditions. Aggregation of temporal scale from half-hourly to monthly time steps tends to linearise physiological responses to environmental variables, and obliterates some that are critical at finer scales. At the monthly scale, solar radiation and soil moisture are the only significant variables for modelling canopy conductance. Finally, this empirical analysis offers much needed validation of proposed soil water modifiers that are necessary to properly represent the impact of present and future droughts on forest productivity. Our results for a sandy clay loam (aspen) are in agreement with those found in the literature, but a different relationship was found for a sandy soil with rapid drainage (jack pine).

Bernier, P. Y.; Bartlett, P. A.; Black, T. A.; Barr, A. G.; Kljun, N.; McCaughey, J. H.

2005-12-01

301

Post-Hadean transitions in Jack Hills zircon provenance: A signal of the Late Heavy Bombardment?  

NASA Astrophysics Data System (ADS)

Hadean Jack Hills (Western Australia) detrital zircons represent the best documented terrestrial resource with which to observe the pre-4 Ga Earth. The >4 Ga component of this semi-continuous 4.38 to 3.0 Ga zircon record has been investigated in detail for age, ?18O, Lu-Hf systematics, and Ti thermometry. The more abundant post-Hadean population is less well-characterized, but a previous study (Bell et al., 2011) suggests a more restricted range of ?18O source materials together with a ca. 4.0-3.6 Ga discontinuity in Lu-Hf evolution. These differences could reflect a transformation in the character of the older zircon source region or their sourcing from different terranes entirely. The relative scarcity of 4.0-3.6 Ga zircons corresponds to a discontinuity in Lu-Hf evolution after which 176Hf/177Hf in zircon reverts to more radiogenic values relative to the >4 Ga population. We present new oxygen isotope, titanium, and trace element results for 4.0-3.6 Ga Jack Hills zircons in a search for apparent transitions in petrological conditions. Post-3.8 Ga zircons show a marked decrease in the occurrence of heavy oxygen (>6.5‰), but remain close to the average of the Hadean distribution despite their restricted range. This may point to the decreased importance of sedimentary materials in post-3.8 Ga magmas. Ca. 3.9 Ga zircons fall into two categories: “Group I” displays temperatures and compositions similar to the Hadean zircons whereas “Group II” zircons have higher U and Hf, and lower (Th/U), Ce and P. Group II zircons also have anomalously low Ti, and are remarkably concordant in the U-Pb system. Group II's geochemical characteristics are consistent with formation by transgressive recrystallization (Hoskin and Black, 2000), in which non-essential structural constituents are purged during high-grade thermal metamorphism. The restricted age range of Group II occurrence (3.91-3.84) and its coincidence with the postulated intense bolide flux in the inner solar system (i.e., Late Heavy Bombardment; 3.95-3.85) may have causal significance.

Bell, Elizabeth A.; Harrison, T. Mark

2013-02-01

302

Late Hadean-Eoarchean transitions in crustal evolution from Hf isotopic evidence in the Jack Hills zircons  

NASA Astrophysics Data System (ADS)

The evolution of the Earth's earliest crust remains largely unknown due to the dearth of Hadean (>4 Ga) rocks, with most observational evidence of the planet's first few hundred million years deriving from geochemical studies of 4.4-4.0 Ga detrital zircons from Jack Hills (Narryer Gneiss Complex, Yilgarn craton). Previous Lu-Hf investigations of the zircons have suggested that continental-like (low Lu/Hf) crust formation began by ~4.4-4.5 Ga and may have continued for several hundred million years. The most ancient crust represented in the Jack Hills population was preserved until at least ~4 Ga. However, evidence for the involvement of Hadean materials in later crustal evolution is sparse, and even at Jack Hills the most unradiogenic, ancient materials represented by some Hadean zircons have not been identified in the younger rock and zircon record. We present new Lu-Hf results from <4 Ga Jack Hills zircons that indicate an important transition in Yilgarn crustal evolution between 4.0 and 3.6 Ga. Although Hadean samples are permissive of crustal extraction from the mantle up to ~4 Ga, crust in the Jack Hills source evolves dominantly by internal reworking 4.0-3.8 Ga, and both the most ancient and most juvenile components of the crust are lost from the zircon record after ~4 Ga. New juvenile additions to the crust at ~3.8-3.7 Ga are accompanied by the disappearance of crust with model ages >4.3 Ga. These new data indicate a tectonic regime in the Eoarchean (4.0-3.6 Ga) Yilgarn characterized by internal crustal reworking punctuated by one relatively short juvenile crust extraction event. The coupling in time of juvenile crust formation with the loss of ancient crust is best explained by a mechanism similar to subduction, which accomplishes both processes on the modern Earth. We interpret these data as consistent with the action of destructive plate boundary interactions by Eoarchean times.

Bell, E. A.; Harrison, M.; Kohl, I. E.; Young, E. D.

2013-12-01

303

Purification and general properties of argininosuccinate lyase from jack bean, Canavalia ensiformis (L.)DC.  

PubMed

1. Argininosuccinate lyase (EC 4.3.2.1) from jack bean [Canavalia ensiformis (L.) DC] seeds was purified 532-fold from an acetone-butanol-dried powder. 2. The enzyme functions reversibly and exhibits maximum stability at 16 degrees . 3. At 16 degrees it has a half-life (t((1/2))) of 263min. 4. The enzyme is both cold-labile (t((1/2)) 131min. at 0 degrees ) and heat-inactivated (t((1/2)) 74min. at 38 degrees ); inactivation appears to be irreversible. 5. Treatment of the acetone-butanol-extracted powder with sodium dodecyl sulphate increased the sensitivity of the enzyme to temperature (t((1/2)) 70min. at 0 degrees ; t((1/2)) 23min. at 38 degrees ). 6. Addition, to the purified enzyme, of a fraction containing lipid from the seed increased the half-life to about 510min. at either 0 degrees or 38 degrees . 7. Arginine or homoarginine, and to a smaller extent some other amino acids or fumarate, protected the enzyme from cold-inactivation. 8. Reactivation attempts with both the cold- and heat-inactivated enzyme failed. 9. The K(m) value for argininosuccinate at pH7.5 is 1.3x10(-4). 10. The enzyme was inactivated completely within 15min. at 16 degrees by 0.5mm-p-hydroxymercuribenzoate, and subsequent exposure to 5mm-cysteine had no restorative effect. PMID:5801668

Rosenthal, G A; Naylor, A W

1969-05-01

304

Growth of the Pacific jack Caranx caninus (Pisces: Carangidae) from the coast of Colima, México.  

PubMed

The Pacific jack Caranx caninus is a common species fished by artisanal fishermen off the coast of Colima, México. During 2002, monthly samples of morphometric data and otoliths were taken to determine age and growth. Seven age groups were identified. The highest growth, 14.4 cm, takes place during the first year of life. During the second year, C caninus grows 11.76 cm; the third year 9.61 cm; the fourth 7.85 cm; the fifth 6.41 cm and sixth year 5.24 cm. The constants of von Bertalanffy's growth equation were: L(infinity) = 83.26 cm, W(infinity) = 18.138 g, K = 0.202, t(0) = -0.283 and A(0.95) = 15 years. Growth curves of other species of the same genus were calculated in order to compare them with the one obtained in the present work. The gonadosomatic index presented higher values during November and May. The periods of more intensive feeding are from August to February. PMID:18624235

Barr, Elaine Espino; Cabello, Manuel Gallardo; Solis, Esther Guadalupe Cabral; Boa, Arturo Garcia; Gómez, Marcos Puente

2008-03-01

305

Carbon and water vapour exchange in a recently burned east boreal jack pine stand, Quebec, Canada  

NASA Astrophysics Data System (ADS)

The circumpolar boreal forest is an extensive carbon (C) reservoir, storing an estimated 88 petagrams (Pg) of C in vegetation biomass with an additional 471 PgC residing within the soil itself. In the North American boreal, fire disturbance acts as the main stand-renewing agent along an approximate 100-year return interval. However, recent studies suggest that fire intensity and severity are increasing, driven by disproportionate climate warming of the northern latitudes. While estimates of direct C emissions from combustion are becoming more accurate, indirect loss due to post-fire effects on decomposition and regeneration has only recently become a focus of research. Paradoxically, it has been estimated that post-fire C releases are in the order of three times the amount directly released during initial combustion. In this study, we examine carbon and water exchange in a 6-year old, post-burn, jack pine stand located in the eastern James Bay region of the Canadian boreal; an area currently under-represented in fire studies. Over 1.5 years, covering two growing seasons and the spring and fall transitions, we measured net CO2 and energy exchange at the ecosystem level using an eddy covariance tower, and supplemented this with chamber measurements of soil respiration. At this stage of recovery, while demonstrating diurnal and seasonal patterns of exchange, overall the site was a net source of C and water to the atmosphere with brief periods of C sink.

Nugent, K.; Strachan, I. B.

2013-12-01

306

Statistical studies on high molecular weight pullulan production in solid state fermentation using jack fruit seed.  

PubMed

The purpose of the work was to optimize the medium variables for maximizing pullulan production using jack fruit seed as a low cost substrate by Aureobasidium pullulans in solid state fermentation. Effects of K2HPO4, KH2PO4, ZnSO4·5H2O, MgSO4·7H2O, NaCl, (NH4)2SO4·5H2O, yeast extract, moisture content (%, w/w) in the production medium on pullulan production were studied using Plackett-Burman design. Production of pullulan was significantly affected by the medium variables namely KH2PO4, ZnSO4·5H2O, NaCl and moisture content (%, w/w). Then screened variables were optimized by Box Behnken experiment design. The pullulan obtained was characterized and confirmed by FTIR, (1)H NMR and (13)C NMR. Molecular weight of pullulan was found to be 1.733×10(6) g/mol by gel permeation chromatography (GPC). PMID:23987421

Sugumaran, K R; Sindhu, R V; Sukanya, S; Aiswarya, N; Ponnusami, V

2013-10-15

307

The lodgepole × jack pine hybrid zone in Alberta, Canada: a stepping stone for the mountain pine beetle on its journey East across the boreal forest?  

PubMed

Historical data show that outbreaks of the tree killing mountain pine beetle are often preceded by periods of drought. Global climate change impacts drought frequency and severity and is implicated in the range expansion of the mountain pine beetle into formerly unsuitable habitats. Its expanded range has recently reached the lodgepole × jack pine hybrid zone in central Alberta, Canada, which could act as a transition from its historical lodgepole pine host to a jack pine host present in the boreal forest. This field study tested the effects of water limitation on chemical defenses of mature trees against mountain pine beetle-associated microorganisms and on beetle brood success in lodgepole × jack pine hybrid trees. Tree chemical defenses as measured by monoterpene emission from tree boles and monoterpene concentration in needles were greater in trees that experienced water deficit compared to well-watered trees. Myrcene was identified as specific defensive compound, since it significantly increased upon inoculation with dead mountain pine beetles. Beetles reared in bolts from trees that experienced water deficit emerged with a higher fat content, demonstrating for the first time experimentally that drought conditions benefit mountain pine beetles. Further, our study demonstrated that volatile chemical emission from tree boles and phloem chemistry place the hybrid tree chemotype in-between lodgepole pine and jack pine, which might facilitate the host shift from lodgepole pine to jack pine. PMID:23955061

Lusebrink, Inka; Erbilgin, Nadir; Evenden, Maya L

2013-09-01

308

Effect of stress absorbers on pipe splitting during jacking in curves  

SciTech Connect

This paper reports on research in which the eccentric distance of the point at which the combined force acting at pipe-end was calculated for different materials and thicknesses of stress absorber, and on analyses regarding the effect of stress absorber on the allowable driving force that does not cause splitting. An eccentric load was applied to the edge of a sample pipe and the resulting strain was measured. The eccentric distance for which the strain is zero was found for each loading condition, and the allowable driving force for reinforced concrete pipe was calculated. Study of the mechanism by which the driving force is transmitted to stress absorber revealed: (1) when the point at which the combined driving force acts at pipe-end falls outside of the focus, the allowable driving force becomes drastically smaller; (2) stress absorber inserted in between pipe ends has the effect of moving the point at which the combined reaction in the stress absorber acts toward the center of the pipe, however, the stress absorber is easily deformed; (3) the allowable driving force for which the point of combined reaction in the stress absorber falls within the focus found should incorporate the allowable bearing capacity of the jacking pipes and the prevention of fracturing at pipe-end values; and (4) in the case of allowable driving force for which the point at which the combined reaction of the stress absorber acts falls within the focus, the prevention of fracturing due to tensile stress in the pipe must also be taken into consideration. 5 refs., 6 figs., 6 tabs.

Kanari, Hideo; Kawaguchi, Naotaka [Kokushikan Univ., Tokyo (Japan)] [and others

1996-08-01

309

Plan for Using Solar-Powered Jack Pumps to Sample Groundwater at the Nevada Test Site  

SciTech Connect

Groundwater is sampled from 39 monitoring wells on the Nevada Test Site (NTS) as part of the Routine Radiological Environmental Monitoring Program. Many of these wells were not designed or constructed for long-term groundwater monitoring. Some have extensive completion zones and others have obstructions such as pumps and tubing. The high-volume submersible pumps in some wells are unsuitable for long-term monitoring and result in large volumes of water that may have to be contained and characterized before subsequent disposition. The configuration of most wells requires sampling stagnant well water with a wireline bailer. Although bailer sampling allows for the collection of depth-discrete samples, the collected samples may not be representative of local groundwater because no well purging is done. Low-maintenance, solar-powered jack pumps will be deployed in nine of these onsite monitoring wells to improve sample quality. These pumps provide the lift capacity to produce groundwater from the deep aquifers encountered in the arid environment of the NTS. The water depths in these wells range from 700 to 2,340 ft below ground surface. The considerable labor and electrical power requirements of electric submersible pumps are eliminated once these pumps are installed. Access tubing will be installed concurrent with the installation of the pump string to provide downhole access for water-level measurements or other wireline instruments. Micro-purge techniques with low pump rates will be used to minimize purge volumes and reduce hydraulic gradients. The set depths of the pumps will be determined by the borehole characteristics and screened interval.

David Hudson, Charles Lohrstorfer, Bruce Hurley

2007-05-03

310

Soil-structure interaction analysis of jack-up platforms subjected to monochrome and irregular waves  

NASA Astrophysics Data System (ADS)

As jack-up platforms have recently been used in deeper and harsher waters, there has been an increasing demand to understand their behaviour more accurately to develop more sophisticated analysis techniques. One of the areas of significant development has been the modelling of spudcan performance, where the load-displacement behaviour of the foundation is required to be included in any numerical model of the structure. In this study, beam on nonlinear winkler foundation (BNWF) modeling—which is based on using nonlinear springs and dampers instead of a continuum soil media—is employed for this purpose. A regular monochrome design wave and an irregular wave representing a design sea state are applied to the platform as lateral loading. By using the BNWF model and assuming a granular soil under spudcans, properties such as soil nonlinear behaviour near the structure, contact phenomena at the interface of soil and spudcan (such as uplifting and rocking), and geometrical nonlinear behaviour of the structure are studied. Results of this study show that inelastic behaviour of the soil causes an increase in the lateral displacement at the hull elevation and permanent unequal settlement in soil below the spudcans, which are increased by decreasing the friction angle of the sandy soil. In fact, spudcans and the underlying soil cause a relative fixity at the platform support, which changes the dynamic response of the structure compared with the case where the structure is assumed to have a fixed support or pinned support. For simulating this behaviour without explicit modelling of soil-structure interaction (SSI), moment-rotation curves at the end of platform legs, which are dependent on foundation dimensions and soil characteristics, are obtained. These curves can be used in a simplified model of the platform for considering the relative fixity at the soil-foundation interface.

Korzani, Maziar Gholami; Aghakouchak, Ali Akbar

2015-03-01

311

Differential effects of plant ontogeny and damage type on phloem and foliage monoterpenes in jack pine (Pinus banksiana).  

PubMed

Coniferous trees have both constitutive and inducible defences that deter or kill herbivores and pathogens. We investigated constitutive and induced monoterpene responses of jack pine (Pinus banksiana Lamb.) to a number of damage types: a fungal associate of the mountain pine beetle (Dendroctonus ponderosae Hopkins), Grosmannia clavigera (Robinson-Jeffrey & R.W. Davidson); two phytohormones, methyl jasmonate (MJ) and methyl salicylate (MS); simulated herbivory; and mechanical wounding. We only included the fungal, MJ and mechanical wounding treatments in the field experiments while all treatments were part of the greenhouse studies. We focused on both constitutive and induced responses between juvenile and mature jack pine trees and differences in defences between phloem and needles. We found that phytohormone applications and fungal inoculation resulted in the greatest increase in monoterpenes in both juvenile and mature trees. Additionally, damage types differentially affected the proportions of individual monoterpenes: MJ-treated mature trees had higher myrcene and ?-pinene than fungal-inoculated mature trees, while needles of juveniles inoculated with the fungus contained higher limonene than MJ- or MS-treated juveniles. Although the constitutive monoterpenes were higher in the phloem of juveniles than mature jack pine trees, the phloem of mature trees had a much higher magnitude of induction. Further, induced monoterpene concentrations in juveniles were higher in phloem than in needles. There was no difference in monoterpene concentration between phytohormone applications and G. clavigera inoculation in mature trees, while in juvenile trees MJ was different from both G. clavigera and simulated herbivory in needle monoterpenes, but there was no difference between phytohormone applications and simulated herbivory in the phloem. PMID:22659460

Erbilgin, Nadir; Colgan, L Jessie

2012-08-01

312

Assessment of possible sources of microbiological contamination in the water column and streambed sediment of the Jacks Fork, Ozark National Scenic Riverways, Missouri - Phase III  

USGS Publications Warehouse

In 1998, a 5 river-mile reach of the Jacks Fork was included on Missouri's list of impaired waters as required by Section 303(d) of the Federal Clean Water Act. The identified pollutant on the Jacks Fork was fecal coliform bacteria. The length of the impaired reach was changed to 7 miles on the Missouri 2002 303(d) list because of data indicating the fecal coliform bacteria problem existed over a broader area. The U.S. Geological Survey, in cooperation with the National Park Service, conducted a study to better understand the extent and sources of microbiological contamination within the Jacks Fork from Alley Spring to the mouth, which includes the 7-mile 303(d) reach. Ten sites were sampled from June 2003 through October 2003 and from June 2004 through October 2004. Water-column and streambed sediment samples were collected from main-stem and tributary sites mostly during base-flow conditions during a variety of recreational season river uses and analyzed for fecal coliform and Escherichia coli bacteria. Isolates of Escherichia coli obtained from water samples collected at five sites were submitted for rep-PCR analysis to identify presumptive sources of fecal indicator bacteria in the Jacks Fork. Results indicate that recreational users (including boaters and swimmers) are not the primary source of fecal coliform bacteria in the Jacks Fork; rather, the presence of fecal coliform bacteria is associated with other animals, of which horses are the primary source. Increases in fecal coliform bacteria densities in the Jacks Fork are associated with cross-country horseback trail-riding events.

Davis, Jerri V.; Barr, Miya N.

2006-01-01

313

Water-soluble jack-knife prawn extract inhibits 5-hydroxytryptamine-induced vasoconstriction and platelet aggregation in humans.  

PubMed

Coronary artery spasm plays an important role in the pathogenesis of various ischemic heart diseases or serious arrhythmia. The aim of this study is to look for functional foods which have physiologically active substances preventing 5-hydroxytryptamine (5-HT)-related vasospastic diseases including peri- and postoperative ischemic complications of coronary artery bypass grafting (CABG) from ocean resources in Japanese coastal waters. First, we evaluated the effect of water-soluble ocean resource extracts on the response to 5-HT in HEK293 cells which have forcibly expressed cyan fluorescent protein-fused 5-HT2A receptors (5-HT2A-CFP). Among 5 different water-soluble extracts of ocean resources, the crude water-soluble jack-knife prawn extract (WJPE) significantly reduced maximal Ca(2+) influx induced by 0.1 ?M 5-HT in a concentration-dependent manner. The Crude WJPE significantly inhibited, in a concentration-dependent manner, 5-HT-induced constriction of human saphenous vein. 5-HT released from activated platelets plays a crucial roles in the constriction of coronary artery. Next the WJPE was purified for applying the experiment of 5-HT-induced human platelet aggregation. The purified WJPE significantly inhibited 5-HT-induced human platelet aggregation also in a concentration-dependent manner. Based on our findings, jack-knife prawn could be one of a functional food with health-promoting benefits for most people with vasospastic diseases including patients who have gone CABG. PMID:25464143

Gamoh, Shuji; Kanai, Tasuku; Tanaka-Totoribe, Naoko; Ohkura, Masamichi; Kuwabara, Masachika; Nakamura, Eisaku; Yokota, Atsuko; Yamasaki, Tetsuo; Watanabe, Akiko; Hayashi, Masahiro; Fujimoto, Shouichi; Yamamoto, Ryuichi

2015-02-11

314

Hafnium isotopes in Jack Hills zircons and the formation of the Hadean crust  

NASA Astrophysics Data System (ADS)

New bulk Hf and Pb isotope data were obtained for 63 leached single zircons from Jack Hills (JH), Western Australia, using solution chemistry and, respectively, MC-ICP MS and ICP-MS. With the exception of one "young" zircon at 3.32 Ga, the remainder of the selected grains were previously dated at > 3.9 Ga by ion-microprobe. This work extends and complements the solution chemistry data of Harrison et al. [Harrison, T.M., Blichert-Toft, J., Müller, W., Albarède, F., Holden, P., Mojzsis, S.J., 2005. Heterogeneous Hadean hafnium: evidence of continental crust at 4.4 to 4.5 Ga. Science 310, 1947-1950.] but uses bulk rather than in situ Pb-Pb ages to interpret the Hf isotope data. This larger data set is used to explore whether the host rocks of the JH zircons formed as a succession of pulses or rather as a single event, and to calculate the age and assess the nature of their crustal protolith. We find that the parent granites of the JH zircons analyzed here formed during a single pulse 4.1 ± 0.1 Ga ago by the remelting of a 4.30-4.36 Ga old protolith. Monte Carlo modeling indicates that the 176Lu/ 177Hf ratios of this material (< 0.01) are unlike the ratios of modern-type oceanic crust and island arc rocks but rather fit a tonalite-trondhjemite-granodiorite (TTG) source. TTGs themselves derived their inordinately enriched character from a basaltic progenitor which corresponds to the missing enriched reservoir identified by the 143Nd- 144Nd, 142Nd- 144Nd, and 176Hf/ 177Hf systematics of Archean rocks. We speculate that crystallization of the magma ocean in the presence of garnet left the upper mantle and an early basaltic crust enriched in incompatible elements. Reaction of this early crust with the overlying hydrosphere and subsequent foundering into the mantle gave rise at ˜ 4.3 Ga to the TTG protolith of the JH granites. Dating the onset of plate tectonics therefore depends on whether TTGs can be considered as subduction zone magmas or not.

Blichert-Toft, Janne; Albarède, Francis

2008-01-01

315

Derivation of jack movement influence coefficients as a basis for selecting wall contours giving reduced levels of interference in flexible walled test sections  

NASA Technical Reports Server (NTRS)

This report covers work done in a transonic wind tunnel towards providing data on the influence of the movement of wall-control jacks on the Mach number perturbations along the test section. The data is derived using an existing streamline-curvature program, and in application is reduced to matrices of influence coefficients.

Goodyer, M. J.

1985-01-01

316

l-Arginine and l-Canavanine Metabolism in Jack Bean, Canavalia ensiformis (L.) DC. and Soybean, Glycine max (L.) Merr.  

PubMed

Studies have been conducted with the arginase (l-arginine amidinohydrolase, EC 3.5.3.1) of two legumes: jack bean, Canavalia ensiformis (L.) DC., a l-canavanine-containing plant and soybean, Glycine max, a canavanine-free species. Analyses of the arginase obtained from gradient-purified mitochondria of these legumes revealed that the arginine-dependent (ADA) and canavanine-dependent activities (CDA) were localized within this organelle.Kinetic analyses of affinity-purified mitochondrial arginase revealed an apparent K(m) of 7 to 8 millimolar for arginine with both the jack bean and soybean arginases. Comparable determinations with canavanine revealed an apparent K(m) of 38 millimolar with the jack bean enzyme; the affinity for this arginine analog with the soybean enzyme is so poor that product formation remained linear even with a canavanine concentration of 890 millimolar.A single macromolecule appears to be responsible for both the ADA and CDA of jack bean arginase. Ion-exchange chromatography of mitochondrial arginase revealed that the ADA and CDA eluted as a single, discrete peak from DEAE-cellulose. Analyses with arginine- and canavanine-linked Sepharose failed to reveal more than one enzyme. Both the ADA and CDA increased by nearly identical amounts following elution from arginine- and canavanine-linked cyanogen bromide-activated sepharose. Neither ADA nor CDA increased preferentially over the other. PMID:16663352

Downum, K R; Rosenthal, G A; Cohen, W S

1983-12-01

317

Standardization of CPUE for Chilean jack mackerel ( Trachurus murphyi) from Chinese trawl fleets in the high seas of the Southeast Pacific Ocean  

NASA Astrophysics Data System (ADS)

The generalized linear model (GLM) and generalized additive model (GAM) were applied to the standardization of catch per unit effort (CPUE) for Chilean jack mackerel from Chinese factory trawl fishing fleets in the Southeast Pacific Ocean from 2001 to 2010 by removing the operational, environmental, spatial and temporal impacts. A total of 9 factors were selected to build the GLM and GAM, i.e., Year, Month, Vessel, La Niña and El Niño events (ELE), Latitude, Longitude, Sea surface temperature (SST), SST anomaly (SSTA), Nino3.4 index and an interaction term between Longitude and Latitude. The first 5 factors were significant components in the GLM, which in combination explained 27.34% of the total variance in nominal CPUE. In the stepwise GAM, all factors explained 30.78% of the total variance, with Month, Year and Vessel as the main factors influencing CPUE. The higher CPUE occurred during the period April to July at a SST range of 12-15°C and a SSTA range of 0.2-1.0°C. The CPUE was significantly higher in normal years compared with that in La Niña and El Niño years. The abundance of Chilean jack mackerel declined during 2001 and 2010, with an increase in 2007. This work provided the relative abundance index of Chilean jack mackerel for stock assessment by standardizing catch and effort data of Chinese trawl fisheries and examined the influence of temporal, spatial, environmental and fisheries operational factors on Chilean jack mackerel CPUE.

Li, Gang; Zou, Xiaorong; Chen, Xinjun; Zhou, Yinqi; Zhang, Min

2013-09-01

318

Scientific achievements of Jack Kirkland to the development of HPLC and in particular to HPLC silica packings—a personal perspective  

Microsoft Academic Search

Joseph (Jack) Kirkland is one of the outstanding protagonists of modern column liquid chromatography (HPLC). He started in 1953 as an analytical chemist at the Experimental Station of Du Pont de Nemours & Co, Wilmington, Delaware, analyzing pesticides by gas chromatography (GC). He early recognized the potential of HPLC as a powerful separation technique at the end of 1960. His

Klaus K. Unger

2004-01-01

319

Jack Bauer, D.M.D. '77, of Burns, Ore., is one of two fulltime dentists in Harney County, which has  

E-print Network

Jack Bauer, D.M.D. '77, of Burns, Ore., is one of two fulltime dentists in Harney County, which has Dr. Bauer. "We see the old guys retiring, but no one to step up to see patients." Dr. Bauer's son, Matthew, D.D.S., is his fulltime partner. Randy Morgan, D.M.D. '78, works half the year with the Bauers

Chapman, Michael S.

320

Effects of introgression on the genetic population structure of two ecologically and economically important conifer species: lodgepole pine (Pinus contorta var. latifolia) and jack pine (Pinus banksiana).  

PubMed

Forest trees exhibit a remarkable range of adaptations to their environment, but as a result of frequent and long-distance gene flow, populations are often only weakly differentiated. Lodgepole and jack pine hybridize in western Canada, which adds the opportunity for introgression through hybridization to contribute to population structure and (or) adaptive variation. Access to large sample size, high density SNP datasets for these species would improve our ability to resolve population structure, parameterize introgression, and separate the influence of demography from adaptation. To accomplish this, 454 transcriptome reads for lodgepole and jack pine were assembled using Newbler and MIRA, the assemblies mined for SNPs, and 1536 SNPs were selected for typing on lodgepole pine, jack pine, and their hybrids (N = 536). We identified population structure using both Bayesian clustering and discriminate analysis of principle components. Introgressed SNP loci were identified and their influence on observed population structure was assessed. We found that introgressed loci resulted in increased differentiation both within lodgepole and jack pine populations. These findings are timely given the recent mountain pine beetle population expansion in the hybrid zone, and will facilitate future studies of adaptive traits in these ecologically important species. PMID:24237338

Cullingham, Catherine I; Cooke, Janice E K; Coltman, David W

2013-10-01

321

Book review: Alan M. Turing, B. Jack Copeland (ed.), The Essential Turing: The ideas that gave birth to the computer age, New York  

E-print Network

1 Book review: Alan M. Turing, B. Jack Copeland (ed.), The Essential Turing: The ideas that gave for the role that Alan Mathison Turing has been playing in the information revolution. There is little debate-19-825080-0. Time magazine's "The Century's Greatest Minds" rated Turing up there with Einstein. In The Essential

Eden, Amnon

322

Query Processing with An FPGA Coprocessor Board Jack S.N. Jean, Guozhu Dong, Hwa Zhang, Xinzhong Guo, and Baifeng Zhang  

E-print Network

Query Processing with An FPGA Coprocessor Board Jack S.N. Jean, Guozhu Dong, Hwa Zhang, Xinzhong a commercial FPGA coprocessor board is used to accelerate the processing of queries on a relational database that contains texts and images. FPGA designs for text searching and image matching are described

Dong, Guozhu

323

appeared in: Amer. Math. Monthly, 107(2000), 185-188. Cake-Cutting Algorithms: Be Fair If You Can. By Jack Robertson and  

E-print Network

appeared in: Amer. Math. Monthly, 107(2000), 185-188. Cake-Cutting Algorithms: Be Fair If You Can be found in Cake-Cutting Algorithms, by Jack Robertson and William Webb. The basic question--how to cut a cake fairly?--is surely an ancient one. However, Robertson and Webb's book demonstrates

Su, Francis Edward

324

Magnitudes and seasonal patterns of energy, water, and carbon exchanges at a boreal young jack pine forest in the BOREAS northern study area  

Microsoft Academic Search

Seasonal patterns of the energy balance of a young jack pine site near Thompson, Manitoba, in the summer of 1994 are reported. The experiment was part of the Boreal Ecosystem-Atmosphere Study (BOREAS), and it ran from May 24 to September 19. The average tree density was 4.4 trees m -2, but there was substantial spatial variation associated with three primary

J. Harry McCaughey; Peter M. Lafleur; David W. Joiner; Paul A. Bartlett; Andrew M. Costello; Dennis E. Jelinski; Michael G. Ryan

1997-01-01

325

Geohydrologic feasibility study of the greater Green River Basin for the potential applicability of Jack W. McIntyre`s patented tool  

SciTech Connect

Geraghty & Miller, Inc, of Midland, Texas conducted geologic and hydrologic feasibility studies of the potential applicability of Jack McIntyre`s patented tool for the recovery of natural gas from coalbed/sand formations in the Greater Green River Basin through literature surveys.

Reed, P.D.

1994-02-01

326

Evaluation of lumbar spine images with added pathology Anders Tingberg*`, Clemens Herrmann2,Jack Besjakov3, Karsten Rodenacker2,Anja Almen',  

E-print Network

Evaluation of lumbar spine images with added pathology Anders Tingberg*`, Clemens Herrmann2,Jack doseto the patient. Lumbar spine radiography is an examination giving a relatively high dose and good can be used in the evaluation of clini- cal image quality. Keywords: Diagnostic radiology, lumbar

Rodenacker, Karsten

327

An Easy and Well-Ordered Way to Learn: Schooling at Home in Louisa May Alcott's "Eight Cousins" and "Jack and Jill"  

ERIC Educational Resources Information Center

Louisa May Alcott's juvenile fiction is often focused on aspects of children's lives that were also topics of reform in nineteenth century America. In "Jack and Jill" and "Eight Cousins," Alcott presents an idealized picture of child-centered learning, building on three central principals: (1) Good teachers are sympathetic and understanding of…

Davis, Cathlin M.

2011-01-01

328

Search for the origins of the geodynamo: Paleomagnetic studies of rocks and zircon crystals from the Jack Hills, Western Australia  

NASA Astrophysics Data System (ADS)

It is currently unknown when Earth's dynamo magnetic field originated. This timing has major implications for the thermal evolution of the interior, the physics of dynamo action, the surface cosmic ray flux, the evolution of the terrestrial atmosphere, and planetary habitability. Paleomagnetic studies of the oldest known unmetamorphosed rocks indicate that a field with intensity similar to that of the present existed at least 3.5 billion years ago (Ga). One of the very few sample suites predating this time are detrital zircon crystals found in quartz-rich siliciclastic rocks from the Jack Hills of Western Australia. With crystallization ages ranging from 3.0-4.38 Ga, they have the potential to preserve a record of the missing first billion years of Earth's magnetic field history. Over the last fourteen years, we have been studying individual Jack Hills zircon crystals and their host rocks to characterize the nature, age, and intensity of their paleomagnetism. Petrographic and rock magnetic studies suggest the zircons contain inclusions of ferromagnetic iron oxides and sulfides. Using a newly developed ultra-high sensitivity moment magnetometry technique implemented on our superconducting quantum interference device (SQUID) microscope, we have found that many zircons carry an extremely weak natural remanent magnetization (ranging from 5-10x10-14 Am2), essentially making them the most weakly magnetic samples studied in the history of paleomagnetism. They present tremendous analytical challenges associated with magnetic contamination and limitations on magnetic recording properties. We present the first magnetic field paleointensity studies of these zircons. The key unknown is the age and origin of their magnetization. In particular, the identification of >3.9 Ga (Hadean) field records requires at least establishing that the zircons have avoided post-depositional remagnetization. However, there are presently no paleomagnetic data that have confidently established the magnetization history for the Hadean zircon locality (Erawandoo Hill), thought to have been deposited at 2.65-3.05 Ga. To address this gap, we have conducted paleomagnetic conglomerate, baked contact, and fold tests in combination with geochronometry to establish the timing of the metamorphic and alteration events and the peak temperatures experienced by the zircons' host rocks. Although we have found little evidence for remagnetization by recent lightning strikes, most rocks in this area have been pervasively remagnetized to at least 330-530°C, likely from the effects of nearby Mesoproterozoic mafic intrusions. However, localized regions of the Jack Hills may have escaped complete remagnetization. We will discuss the implications of these data for the possibility that magnetization in the detrital zircons predates their deposition.

Weiss, B. P.; Andrade Lima, E.; Maloof, A. C.; Tailby, N.; Trail, D.; Ramezani, J.; Hanus, V.; Watson, E. B.; Fu, R. R.; Harrison, M.; Bowring, S. A.; Kirschvink, J. L.

2013-12-01

329

Neoarchean metamorphism recorded in high-precision Sm-Nd isotope systematics of garnets from the Jack Hills (Western Australia)  

NASA Astrophysics Data System (ADS)

Studies of metasedimentary rocks from the Jack Hills, which host Earth's oldest known detrital minerals, have focused on zircon and occasionally monazite or xenotime, but no attention has been directed toward one of the most common mineral markers of metamorphism: garnet. Garnet can provide a record of the post-depositional, prograde metamorphic history of Archean metasedimentary rocks. Additionally, the use of a newly developed detrital garnet dating technique [1,2] may reveal information about pre-depositional metamorphism that could address lingering questions about the nature and timing of Earth's earliest tectonometamorphic events. Here we investigate garnet from the Jack Hills metasedimentary rocks to test whether they record in situ metamorphism or are a detrital relict of even older metamorphic events. We identified garnet in two bulk quartz-pebble conglomerate samples collected from the 'discovery' outcrop at Eranondoo Hill in the Jack Hills of Western Australia. Electron microprobe analyses of polished grains and SEM measurements of unpolished grain surfaces are consistent, revealing garnet composition indicative of a single generation/population of predominantly almandine-spessartine solid solution (~10-35% mole fraction spessartine). Compositional maps of garnet grains reveal little zoning and no discontinuities, most consistent with a single growth event. Dating Jack Hills' garnet via the Sm-Nd system is possible due to continued development of small sample analysis techniques, including running NdO+ TIMS analyses with Ta2O5 activator [3] permitting <50 ppm 2 sigma analytical precision on a 400pg in-house standard and continued improvement in blanks (<15pg full procedural blanks). Additionally, employing a nondestructive chemical prescreening technique (tabletop SEM) allows for grouping of multiple grains based on chemical similarity. Final Nd loads in the 450-750pg range routinely yield dates with precisions <×10Ma for two point isochrons between clean garnet (Sm/Nd ? 1.0) and their leached inclusion populations [2]. Four grouped garnet grain separates from one sample yield preliminary dates of 2703.6×6.0Ma, 2612.4×6.0Ma, 2605.0×5.5Ma, and 2567.3×8.3Ma, while the second sample yielded a date of 2579.6×4.6 Ma (2?). Compositional and geochronologic data indicate likely in situ garnet growth during a late Archean greenschist facies metamorphic event. These dates are generally consistent with published monazite ages placing a metamorphic event at ~ca.2.65Ga [4,5]. It remains possible that an as yet unidentified detrital garnet component is present and may explain some of the scatter in absolute age. [1] Baxter EF, Jordan MK & Inglis JD, 2010, Goldschmidt [2] Baxter EF, Eccles KA & Sullivan N, 2012, Goldschmidt [3] Harvey J & Baxter EF, 2009, Chem Geol, 258, 251-257 [4] Rasmussen B, et al, 2010, Precambrian Res, 180, 26-46 [5] Iizuka T, et al, 2010, Contrib Mineral Petr, 160, 803-823

Eccles, K. A.; Baxter, E. F.; Mojzsis, S. J.; Marschall, H.; Williams, M. L.; Jercinovic, M. J.

2013-12-01

330

Root mass, net primary production and turnover in aspen, jack pine and black spruce forests in Saskatchewan and Manitoba, Canada.  

PubMed

Root biomass, net primary production and turnover were studied in aspen, jack pine and black spruce forests in two contrasting climates. The climate of the Southern Study Area (SSA) near Prince Albert, Saskatchewan is warmer and drier in the summer and milder in the winter than the Northern Study Area (NSA) near Thompson, Manitoba, Canada. Ingrowth soil cores and minirhizotrons were used to quantify fine root net primary production (NPPFR). Average daily fine root growth (m m(-2) day(-1)) was positively correlated with soil temperature at 10-cm depth (r(2) = 0.83-0.93) for all three species, with black spruce showing the strongest temperature effect. At both study areas, fine root biomass (measured from soil cores) and fine root length (measured from minirhizotrons) were less for jack pine than for the other two species. Except for the aspen stands, estimates of NPPFR from minirhizotrons were significantly greater than estimates from ingrowth cores. The core method underestimated NPPFR because it does not account for simultaneous fine root growth and mortality. Minirhizotron NPPFR estimates ranged from 59 g m(-2) year(-1) for aspen stands at SSA to 235 g m(-2) year(-1) for black spruce at NSA. The ratio of NPPFR to total detritus production (aboveground litterfall + NPPFR) was greater for evergreen forests than for deciduous forests, suggesting that carbon allocation patterns differ between boreal evergreen and deciduous forests. In all stands, NPPFR consistently exceeded annual fine root turnover and the differences were larger for stands in the NSA than for stands in the SSA, whereas the difference between study areas was only significant for black spruce. The imbalance between NPPFR and fine root turnover is sufficient to explain the net accumulation of carbon in boreal forest soils. PMID:14759831

Steele, Sarah J.; Gower, Stith T.; Vogel, Jason G.; Norman, John M.

1997-01-01

331

Growth of mycorrhizal jack pine (Pinus banksiana) and white spruce (Picea glauca) seedlings planted in oil sands reclaimed areas.  

PubMed

The effectiveness of ectomycorrhizal inoculation at the tree nursery seedling production stage on growth and survival was examined in jack pine (Pinus banksiana) and white spruce (Picea glauca) planted in oil sands reclamation sites. The seedlings were inoculated with Hebeloma crustuliniforme strain # UAMH 5247, Suillus tomentosus strain # UAMH 6252, and Laccaria bicolor strain # UAMH 8232, as individual pure cultures and in combinations. These treatments were demonstrated to improve salinity resistance and water uptake in conifer seedlings. The field responses of seedlings to ectomycorrhizal inoculation varied between plant species, inoculation treatments, and measured parameters. Seedling inoculation resulted in higher ectomycorrhizal colonization rates compared with non-inoculated control, which had also a relatively small proportion of roots colonized by the nursery contaminant fungi identified as Amphinema byssoides and Thelephora americana. Seedling inoculation had overall a greater effect on relative height growth rates, dry biomass, and stem volumes in jack pine compared with white spruce. However, when examined after two growing seasons, inoculated white spruce seedlings showed up to 75% higher survival rates than non-inoculated controls. The persistence of inoculated fungi in roots of planted seedlings was examined at the end of the second growing season. Although the inoculation with H. crustuliniforme triggered growth responses, the fungus was not found in the roots of seedlings at the end of the second growing season suggesting a possibility that the observed growth-promoting effect of H. crustuliniforme may be transient. The results suggest that the inoculation of conifer seedlings with ectomycorrhizal fungi could potentially be carried out on a large scale in tree nurseries to benefit postplanting performance in oil sands reclamation sites. However, these practices should take into consideration the differences in responses between the different plant species and fungal strains. PMID:24424508

Onwuchekwa, Nnenna E; Zwiazek, Janusz J; Quoreshi, Ali; Khasa, Damase P

2014-08-01

332

Metal-sensitive and thermostable trypsin from the crevalle jack (Caranx hippos) pyloric caeca: purification and characterization  

PubMed Central

Background Over the past decades, the economic development and world population growth has led to increased for food demand. Increasing the fish production is considered one of the alternatives to meet the increased food demand, but the processing of fish leads to by-products such as skin, bones and viscera, a source of environmental contamination. Fish viscera have been reported as an important source of digestive proteases with interesting characteristics for biotechnological processes. Thus, the aim of this study was to purify and to characterize a trypsin from the processing by-products of crevalle jack (Caranx hippos) fish. Results A 27.5 kDa trypsin with N-terminal amino acid sequence IVGGFECTPHVFAYQ was easily purified from the pyloric caeca of the crevalle jack. Its physicochemical and kinetic properties were evaluated using N-?-benzoyl-DL-arginine-p-nitroanilide (BApNA) as substrate. In addition, the effects of various metal ions and specific protease inhibitors on trypsin activity were determined. Optimum pH and temperature were 8.0 and 50°C, respectively. After incubation at 50°C for 30 min the enzyme lost only 20% of its activity. K m , k cat, and k cat /K m values using BApNA as substrate were 0.689 mM, 6.9 s-1, and 10 s-1 mM-1, respectively. High inhibition of trypsin activity was observed after incubation with Cd2+, Al3+, Zn2+, Cu2+, Pb2+, and Hg2+ at 1 mM, revealing high sensitivity of the enzyme to metal ions. Conclusions Extraction of a thermostable trypsin from by-products of the fishery industry confirms the potential of these materials as an alternative source of these biomolecules. Furthermore, the results suggest that this trypsin-like enzyme presents interesting biotechnological properties for industrial applications. PMID:24112762

2013-01-01

333

Re: Account 2155-E7P10 -Deepwater Oil Spill sand-berm report Jack L Kindinger 0 Rebecca J Deckard 05/26/201006:08 PM  

E-print Network

Re: Account 2155-E7P10 - Deepwater Oil Spill sand-berm report t Jack L Kindinger 0 Rebecca J-204-8998 Jack Kindinger USGS, St. Petersburg, FL On May 26, 2010, at 3:34 PM, Rebecca J Deckard > ······················································· > Rebecca J. Deckard, PSC Chief > USGS EPN, Raleigh PSC > (AL, GA., MS, NC, SC, TN, VA) > > U.S. Geological

Torgersen, Christian

334

Effect of clear-cutting, prescribed burning and scarification on litter decomposition in an eastern Ontario jack pine (Pinus banksiana) ecosystem  

Microsoft Academic Search

Mass losses of litter bags containing leaf litter of Pinus banksiana Lamb., Quercus rubra L., Pteridium aquilium (L.) Kuhn, and Populus tremuloides Mchx. were compared in a jack pine ecosystem after clear-cutting, clear-cutting plus prescribed burning, and clear-cutting plus disk trench- ing scarification. Controls consisted of litterbags left in undisturbed plots. Mass losses were significantly affected by treatment types and

Luc C. Duchesne; W. Wetzel

1999-01-01

335

The impact of broadcast burning and fire severity on species composition and abundance of surface vegetation in a jack pine ( Pinus banksiana) clear-cut  

Microsoft Academic Search

Species composition and abundance of surface vegetation was examined within 4-year-old jack pine (Pinus banksiana Lamb.) clear-cuts and clear-cuts treated with prescribed burning. Six unique species including Diervilla Lonicera Mill., Convulvulus spithameus L., Erigeron canadensis L., Salix spp., Viola adunca J.W. Smith and Rubus allegheniensis Porter were found solely within burned-over sites whereas only one species, Linnea borealis L., was

C. A. Whittle; L. C. Duchesne; T. Needham

1997-01-01

336

Geohydrologic feasibility study of the Piceance Basin of Colorado for the potential applicability of Jack W. McIntyre`s patented gas/produced water separation process  

SciTech Connect

Geraghty & Miller, Inc. of Midland, Texas conducted geologic and hydrologic feasibility studies of the potential applicability of Jack McIntyre`s patented process for the recovery of natural gas from coalbed/sand formations in the Piceance Basin through literature surveys. Jack McIntyre`s tool separates produced water from gas and disposes of the water downhole into aquifers unused because of poor water quality, uneconomic lifting costs or poor aquifer deliverability. The beneficial aspects of this technology are two fold. The process increases the potential for recovering previously uneconomic gas resources by reducing produced water lifting, treatment and disposal costs. Of greater importance is the advantage of lessening the environmental impact of produced water by downhole disposal. Results from the survey indicate that research in the Piceance Basin includes studies of the geologic, hydrogeologic, conventional and unconventional recovery oil and gas technologies. Available information is mostly found centered upon the geology and hydrology for the Paleozoic and Mesozoic sediments. Lesser information is available on production technology because of the limited number of wells currently producing in the basin. Limited information is available on the baseline geochemistry of the coal/sand formation waters and that of the potential disposal zones. No determination was made of the compatibility of these waters. The study also indicates that water is often produced in variable quantities with gas from several gas productive formations which would indicate that there are potential applications for Jack McIntyre`s patented tool in the Piceance Basin.

Kieffer, F.

1994-02-01

337

Assessment of possible sources of microbiological contamination and water-quality characteristics of the Jacks Fork, Ozark National Scenic Riverways, Missouri; phase II  

USGS Publications Warehouse

In 1998, an 8-mile reach of the Jacks Fork was included on Missouri?s list of impaired waters as required by Section 303(d) of the Federal Clean Water Act. The identified pollutant on the Jacks Fork was fecal coliform bacteria. Potential sources of fecal contamination to the Jacks Fork include a wastewater treatment plant; campground pit-toilet or septic-system effluent; a large commercial, cross-country horseback trail riding facility; canoeists, boaters, and tubers; and cows.The U.S. Geological Survey, in cooperation with the National Park Service, conducted a study to better understand the extent and sources of microbiological contamination within the Jacks Fork from Alley Spring to the mouth, which includes the 8-mile 303(d) reach. Identification of the sources would provide the National Park Service and the State of Missouri with the information needed to craft a solution of abatement, regulation, prevention, and mitigation with the end result being the removal of the Jacks Fork from the 303(d) list. Fifteen sites were sampled from November 1999 through December 2000. An additional site was sampled one time. Samples were collected mostly during base-flow conditions during a variety of nonrecreational and recreational season river uses. Samples were analyzed for selected fecal indicator bacteria, physical properties, nutrients, and wastewater organic compounds. During the sampling period, the whole-body-contact recreation standard for fecal coliform (200 colonies per 100 milliliters of sample) was exceeded at three sites on August 10, 2000, and also at one site on May 11, June 7, and October 3, 2000. Fecal coliform densities and instantaneous loads generally increased from background concentrations at the Eminence site, peaked about 2 river miles downstream, and then decreased until the most downstream site sampled. Generally, the largest densities and loads at sites downstream from Eminence not related to wet-weather flow were observed during a trail ride held August 6 to12, 2000. A 24-hour sample collection effort was conducted the weekend of July 15 and 16, 2000, to investigate the effect that large numbers of swimmers, canoeists, and tubers had on fecal coliform densities in the Jacks Fork. Five or six samples were collected at six sites between Saturday morning and the following Sunday afternoon. No fecal coliform density at any of the sites sampled exceeded the whole-body-contact recreation standard. Because bacteria survive longer in stream-bed sediments than in water, a source of bacteria in the water column could be from resuspension of accumulated bacteria from streambed sediments. Water and streambed-sediment samples were collected at three sites on August 3, 2000, 1 week before a trail ride and again at three sites on 2 Assessment of Possible Sources of Microbiological Contamination of the Jacks Fork, Missouri?Phase II August 8, 2000, during a trail ride. Results indicate that fecal coliform bacteria densities increased substantially in the streambed sediment and the water column during the trail ride.Sixty-five Escherichia coli isolates obtained from water samples collected at 9 sites and 23 Escherichia coli isolates obtained from stream-bed-sediment samples collected at 5 sites were submitted for ribotyping analysis. Samples were collected in 2000 during a variety of nonrecreational and recreational season river uses, including trail rides, canoeing, tubing, and swimming. Of the 65 isolates from water samples, 40 percent were identified as originating from sewage, 29 percent from horse, 11 percent from cow, and 20 percent from an unknown source. Of the 23 isolates from streambed-sediment samples, 39 percent were identified as originating from sewage, 35 percent from horse, 13 percent from cow, and 13 percent from unknown sources.Analysis of physical property (dissolved oxygen, pH, specific conductance, and temperature) and nutrient (dissolved nitrite plus nitrate and total phosphorus) data

Davis, Jerri V.; Richards, Joseph M.

2002-01-01

338

Estimates of in situ deformability with an NX borehole jack, Spent Fuel Test - Climax, Nevada test site  

SciTech Connect

A series of borehole modulus measurements was obtained at the Spent Fuel Test - Climax (SFT-C) facility following removal of heat sources and a subsequent 1-year cooling period. A total of 212 measurements were obtained using a standard hardrock NX borehole (Goodman) jack. The results of 64 measurements made at the site before heating were reanalyzed for comparison with the post-heat data. Modulus values were calculated from the straight-line portion of the pressure vs displacement curves. Although the deformation modulus was observed to be highly variable, models were developed to explain much of this variability. Typically, spacial effects, anisotropy, and heating effects were present. The test results indicate that the deformation modulus tended to increase in the pillars between the underground openings where temperatures increased about 10{sup 0}C above the ambient 24{sup 0}C during the SFT-C. Conversely, a decrease in modulus was observed where temperatures were near 60{sup 0}C for a three-year period. In most cases, we found the modulus values to be slightly higher for vertical than for horizontal loading. There was a tendency for the modulus to be lower near excavated openings. While this effect was not ubiquitous, it was statistically significant.

Patrick, W.C.; Yow, J.L. Jr.; Axelrod, M.C.

1985-12-01

339

White Anglo-Saxon hopes and black Americans' Atlantic dreams: Jack Johnson and the British boxing colour bar.  

PubMed

This article examines the controversy surrounding Jack Johnson's proposed world heavyweight title fight against the British champion Bombardier Billy Wells in London (1911). In juxtaposing African Americans' often glowing discussions of European tolerance with the actual white resistance the black champion faced in Britain, including the Home Office's eventual prohibition of the match, the article explores the period's transnational discourses of race and citizenship. Indeed, as white sportsmen on both sides of the Atlantic joined together in their search for a "White Hope" to unseat Johnson, the boxing ring became an important cultural arena for interracial debates over the political and social divisions between white citizens and nonwhite subjects. Although African Americans had high hopes for their hero's European sojourn, the British backlash against the Johnson-Wells match underscored the fact that their local experiences of racial oppression were just one facet of a much broader global problem. At the same time, the proposed prizefight also made the specter of interracial conflict in the colonies all the more tangible in the British capital, provoking public discussions about the merits of U.S. racial segregation, along with the need for white Anglo-Saxon solidarity around the world. Thus, this article not only exposes the underlying connections between American Jim Crow and the racialized fault lines of British imperialism, but it also traces the "tense and tender ties" linking U.S. and African American history with the new imperial history and postcolonial studies. PMID:21510333

Runstedtler, Theresa

2010-01-01

340

Soil respiration and photosynthetic uptake of carbon dioxide by ground-cover plants in four ages of jack pine forest  

USGS Publications Warehouse

Soil carbon dioxide (CO2) emission (soil respiration), net CO2 exchange after photosynthetic uptake by ground-cover plants, and soil CO2 concentration versus depth below land surface were measured at four ages of jack pine (Pinus banksiana Lamb.) forest in central Saskatchewan. Soil respiration was smallest at a clear-cut site, largest in an 8-year-old stand, and decreased with stand age in 20-year-old and mature (60-75 years old) stands during May-September 1994 (12.1, 34.6, 31.5, and 24.9 mol C??m-2, respectively). Simulations of soil respiration at each stand based on continuously recorded soil temperature were within one standard deviation of measured flux for 48 of 52 measurement periods, but were 10%-30% less than linear interpolations of measured flux for the season. This was probably due to decreased soil respiration at night modeled by the temperature-flux relationships, but not documented by daytime chamber measurements. CO2 uptake by ground-cover plants ranged from 0 at the clear-cut site to 29, 25, and 9% of total growing season soil respiration at the 8-year, 20-year, and mature stands. CO2 concentrations were as great as 7150 ppmv in the upper 1 m of unsaturated zone and were proportional to measured soil respiration.

Striegl, R.G.; Wickland, K.P.

2001-01-01

341

Trace-element composition of hydrothermal zircon and the alteration of Hadean zircon from the Jack Hills, Australia  

NASA Astrophysics Data System (ADS)

Hydrothermal zircon can be used to date fluid-infiltration events and water/rock interaction. At the Boggy Plain zoned pluton (BPZP), eastern Australia, hydrothermal zircon occurs with hydrothermal scheelite, molybdenite, thorite and rutile in incipiently altered aplite and monzogranite. The hydrothermal zircon is texturally distinct from magmatic zircon in the same rocks, occurring as murky-brown translucent 20-50 ?m-thick mantles on magmatic cores and less commonly as individual crystals. The hydrothermal mantles are internally textureless in back-scatter electron and cathodoluminescence images whereas magmatic zircon is oscillatory zoned. The age of the hydrothermal zircon is indistinguishable from magmatic zircon, indicating precipitation from a fluid evolved from the magma during the final stages of crystallization. Despite indistinguishable U-Pb isotopic compositions, the trace-element compositions of the hydrothermal and magmatic zircon are distinct. Hydrothermal zircon is enriched in all measured trace-elements relative to magmatic zircon in the same rock, including V, Ti, Nb, Hf, Sc, Mn, U, Y, Th and the rare-earth elements (REE). Chondrite-normalized REE abundances form two distinct pattern groupings: type-1 (magmatic) patterns increase steeply from La to Lu and have Ce and Eu anomalies—these are patterns typical for unaltered magmatic zircon in continental crust rock types; type-2 (hydrothermal) patterns generally have higher abundances of the REE, flatter light-REE patterns [(Sm/La) N = 1.5-4.4 vs. 22-110 for magmatic zircon] and smaller Ce anomalies (Ce/Ce* = 1.8-3.5 vs. 32-49 for magmatic zircon). Type-2 patterns have also been described for hydrothermally-altered zircon from the Gabel Hamradom granite, Egypt, and a granitic dyke from the Acasta Gneiss Complex, Canada. Hadean (˜4.5-4.0 Ga) zircon from the Jack Hills, Western Australia, have variable normalized REE patterns. In particular, the oldest piece of Earth—zircon crystal W74/2-36 (dated at 4.4 Ga)—contains both type-1 and type-2 patterns on a 50 ?m scale, a phenomenon not yet reported for unaltered magmatic zircon. In the context of documented magmatic and hydrothermal zircon compositions from constrained samples from the BPZP and the literature, the type-2 patterns in crystal W74/2-36 and other Jack Hills Hadean (JHH) zircon are interpreted as hydrothermally-altered magmatic compositions. An alteration scenario, constrained by isotope and trace-element data, as well as ?-decay event calculations, involving fluid/zircon cation and oxygen isotope exchange within partially metamict zones and minor dissolution/reprecipitation, may have occurred episodically for some JHH zircon and at ˜4.27 Ga for zircon W74/2-36. Type-2 compositions in JHH zircon are interpreted to represent localized exchange with a light-REE-bearing, high ? 18O (˜6-10‰ or higher) fluid. Thus, a complex explanation involving "permanent" liquid water oceans, large-scale water/rock interaction and plate tectonics in the very early Archean is not necessary as the zircon textures and compositions are simply explained by exchange between partially metamict zircon and a low volume ephemeral fluid.

Hoskin, Paul W. O.

2005-02-01

342

A Homozygous KCNJ10 Mutation in Jack Russell Terriers and Related Breeds with Spinocerebellar Ataxia with Myokymia, Seizures, or Both  

PubMed Central

Background Juvenile-onset spinocerebellar ataxia has been recognized in Jack Russell Terriers and related Russell group terriers (RGTs) for over 40 years. Ataxia occurs with varying combinations of myokymia, seizures, and other signs of neurologic disease. More than 1 form of the disease has been suspected. Hypothesis/Objectives The objective was to identify the mutation causing the spinocerebellar ataxia associated with myokymia, seizures, or both and distinguish the phenotype from other ataxias in the RGTs. Animals DNA samples from 16 RGTs with spinocerebellar ataxia beginning from 2 to 12 months of age, 640 control RGTs, and 383 dogs from 144 other breeds along with the medical records of affected dogs were studied. Methods This case-control study compared the frequencies of a KCNJ10 allele in RGTs with spinocerebellar ataxia versus control RGTs. This allele was identified in a whole-genome sequence of a single RGT with spinocerebellar ataxia and myokymia by comparison to whole-genome sequences from 81 other canids that were normal or had other diseases. Results A missense mutation in the gene coding for the inwardly rectifying potassium channel Kir4.1 (KCNJ10:c.627C>G) was significantly (P < .001) associated with the disease. Dogs homozygous for the mutant allele all had spinocerebellar ataxia with varying combinations of myokymia and seizures. Conclusions and Clinical Importance Identification of the KCNJ10 mutation in dogs with spinocerebellar ataxia with myokymia, seizures, or both clarifies the multiple forms of ataxia seen in these breeds and provides a DNA test to identify carriers. PMID:24708069

Gilliam, D; O'Brien, DP; Coates, JR; Johnson, GS; Johnson, GC; Mhlanga-Mutangadura, T; Hansen, L; Taylor, JF; Schnabel, RD

2014-01-01

343

Proterozoic events recorded in quartzite cobbles at Jack Hills, Western Australia: New constraints on sedimentation and source of > 4 Ga zircons  

NASA Astrophysics Data System (ADS)

Rare heavy mineral bands within quartzite cobbles were identified in two conglomerate units within the Jack Hills belt, Western Australia. Seven zircon-bearing cobbles were analysed from one location (site 152) and three from another (site 154), both approximately 1 km west of the site where zircons in excess of 4 Ga are abundant (W74 'discovery' site). Individual pebbles from the 152 site reveal three distinctive features, containing either zircons > 3.0 Ga in age, < 1.9 Ga in age or a range of ages from ˜ 1.2 to ˜ 3.6 Ga. Those from site 154 are more uniform, containing only zircons with ages between 3.1 and 3.9 Ga. Only one grain > 4 Ga was discovered from the entire suite of pebbles, in contrast to the well-studied W74 site. A single detrital zircon with an age of 1220 ± 42 Ma from location 152 is the youngest grain so far reported from sedimentary rocks at Jack Hills. It shows magmatic oscillatory zoning and thus implies at least two sedimentary cycles within the Proterozoic; requiring erosion of an igneous precursor, incorporation into a clastic sediment, induration and subsequent erosion and transport to be hosted in the conglomerate. The nearest source for rocks of this age is the Bangemall Supergroup in the Collier Basin, ˜ 100 km northeast in the Capricorn Orogen. This would imply tectonic interleaving of originally more extensive Bangemall rocks, possibly related to activity along the Cargarah Shear Zone that traverses the Jack Hills belt. The lack of > 4.1 Ga zircons in the pebbles is highly significant, suggesting the immediate source of ancient zircons was no longer present at the Earth's surface. This equates with a general lack of ancient crystals noted in rocks that contain Proterozoic zircons from previous studies and implies that such grains diminish in number as earlier sedimentary rocks were successively recycled.

Grange, Marion L.; Wilde, Simon A.; Nemchin, Alexander A.; Pidgeon, Robert T.

2010-03-01

344

Effects of NaCl on responses of ectomycorrhizal black spruce (Picea mariana), white spruce (Picea glauca) and jack pine (Pinus banksiana) to fluoride.  

PubMed

Black spruce (Picea mariana), white spruce (Picea glauca) and jack pine (Pinus banksiana) were inoculated with Suillus tomentosus and subjected to potassium fluoride (1 mM KF and 5 mM KF) in the presence and absence of 60 mM NaCl. The NaCl and KF treatments reduced total dry weights in jack pine and black spruce seedlings, but they did not affect total dry weights in white spruce seedlings. The addition of 60 mM NaCl to KF treatment solutions alleviated fluoride-induced needle injury in ectomycorrhizal (ECM) black spruce and white spruce, but had little effect in jack pine seedlings. Both KF and 60 mM NaCl treatments reduced E values compared with non-treated control seedlings. However, with the exception of small reductions of K(r) by NaCl treatments in black spruce, the applied KF and NaCl treatments had little effect on K(r) in ECM plants. Chloride tissue concentrations in NaCl-treated plants were not affected by the presence of KF in treatment solutions. However, shoot F concentrations in ECM black spruce and white spruce treated with 5 mM KF + 60 mM NaCl were significantly reduced compared with the 5 mM KF treatment. The results point to a possible competitive inhibition of F transport by Cl. We also suggest that the possibility that aquaporins may be involved in the transmembrane transport of F should be further investigated. PMID:19121099

Calvo-Polanco, Mónica; Zwiazek, Janusz J; Jones, Melanie D; MacKinnon, Michael D

2009-01-01

345

Helminths of sympatric black-tailed jack rabbits (Lepus californicus) and desert cottontails (Sylvilagus audubonii) from the high plains of eastern New Mexico.  

PubMed

Thirty-five desert cottontails (Sylvilagus audubonii) and 35 black-tailed jack rabbits (Lepus californicus), occurring sympatrically near the Clovis-Portales area of eastern New Mexico were infected with four species of Eucestoda (adults of Raillietina salmoni and Raillietina selfi, larvae of Taenia pisiformis and Taenia serialis). Raillietina salmoni and T. pisiformis more commonly infected S. audubonii. Raillietina selfi was found in near equal prevalence in both host species. Taenia serialis was recovered only from L. californicus. Thus, three of the four helminth species were shared by both lagomorphs (Jaccard's coefficient = 75). Female hosts were most heavily infected with R. selfi and Taenia serialis. PMID:3373649

Pfaffenberger, G S; Valencia, V B

1988-04-01

346

Jack of all trades masters novel host plants: positive genetic correlations in specialist and generalist insect herbivores expanding their diets to novel hosts  

PubMed Central

One explanation for the widespread host specialization of insect herbivores is the “Jack of all trades-master of none” principle, which states that genotypes with high performance on one host will perform poorly on other hosts. This principle predicts that cross-host correlation in performance of genotypes will be negative. In this study we experimentally explored cross-host correlations and performance among families in four species (two generalist and two specialist) of leaf beetles (Cephaloleia spp.) that are currently expanding their diets from native to exotic plants. All four species displayed similar responses in body size, developmental rates and mortality rates to experimentally controlled diets. When raised on novel hosts, body size of larvae, pupae and adults were reduced. Development times were longer and larval mortality was higher on novel hosts. Genotype × host plant interactions were not detected for most traits. All significant cross-host correlations were positive. These results indicate very different ecological and evolutionary dynamics than those predicted by the “Jack of all trades-master of none” principle. PMID:22022877

GARCÍA-ROBLEDO, CARLOS; HORVITZ, CAROL C.

2011-01-01

347

Effects of multiple oral dosing on IgE synthesis in mice: oral sensitization by albumin extracts from seeds of Jack fruit (Artocarpus integrifolia) containing lectins.  

PubMed Central

The IgE antibody response was studied in DBA/2 mice; the mice were pretreated orally with albumin extracts from seeds of Jack fruit (Jackalbumin) and subsequently immunized subcutaneously with Jackalbumin mixed with ovalbumin (OA) and a synthetic adjuvant, muramyl dipeptide (MDP). The allergenicity of Jackalbumin was evaluated by its capacity to induce a specific IgE response which was measured by passive cutaneous anaphylaxis (PCA) and by degranulation of washed peritoneal mast cells following antigen challenge (Jackalbumin or OA). Antibody against the crude extracts and anti-lectin (FIISP) IgE responses were also tested by PCA. After being fed eight doses of 1 mg Jackalbumin, DBA/2 mice became immunized: i.e. specific IgE antibody responses were observed and the peritoneal mast cells became sensitized. An increase in IgE response was verified in mice that were pre-fed and subsequently immunized. The results indicated that: the albumin extracts from Jack seeds, containing lectins, can be allergenic by the oral route; multiple oral doses with these extracts can induce an enhancement of the IgE response on subsequent subcutaneous immunization; antigenically, Jackalbumin does not seem to cross-react with OA; the lectins contained in the albumin fraction from Artocarpus seeds were also shown to be allergenic; the IgE titres showed an inverse correlation to the degree of purification of the lectin used for PCA challenge. PMID:3972438

Restum-Miguel, N; Prouvost-Danon, A

1985-01-01

348

Effects of frozen and refrigerated storage on organic acid profiles of goat milk plain soft and Monterey Jack cheeses.  

PubMed

The effects of 6 mo of freezing and refrigeration on organic acid profiles of 2 types of goat milk cheese [plain soft (PS) and Monterey Jack (MJ)] were studied in comparison with those of a nonfrozen control (NFC). Three lots of commercial PS cheeses were purchased, and 3 lots of MJ cheeses were manufactured at the University dairy plant. Each lot of the 2 types of cheeses was subdivided into 4 equal portions, and one subsample of each cheese was immediately stored at 4 degrees C as the NFC for 0, 14, and 28 d. The other 3 were immediately frozen (-20 degrees C) for 0, 3, and 6 mo (0MF, 3MF, and 6MF) and subsequently thawed the next day at 4 degrees C. The samples were then stored at 4 degrees C for 0, 14, and 28 d. Organic acids were quantified using an HPLC. The PS had no pyruvic acid, and MJ contained no isotartaric acid; however, several unknown large peaks appeared between propionic and butyric acids. Differences in organic acid contents between PS and MJ cheeses were significant for all acids except citric and lactic acid. Lot effect was significant for most of the known acids, indicating that variations existed in milk composition and manufacturing parameters. Effects of storage treatments (NFC, 0MF, 3MF, and 6MF) were significant for most organic acids, except for orotic and a few unidentified acids. Aging at 4 degrees C for 4 wk had little influence on all organic acids, except butyric acid. Concentrations of butyric, lactic, propionic, tartaric, and uric acids were significantly elevated as the frozen storage period advanced. At the initial stage, there were no differences in pH and acid degree values between NFC and frozen-stored groups of both cheeses. However, acid degree values gradually increased as the refrigerated storage extended up to 4 wk, indicating that lipolysis increased as the refrigeration storage at 4 degrees C advanced. Although levels of several organic acids were changed in the goat cheeses, the prolonged frozen storage, up to 6 mo, was apparently feasible for extending storage. PMID:16507679

Park, Y W; Lee, J H; Lee, S J

2006-03-01

349

Jack Chessa ASSOCIATE PROFESSOR  

E-print Network

2003-2007 Graduate Research Assistant, Mechanical Engineering, Northwestern University 1998, Workshop on Ultra-High- Temperature Ceramic Materials, JUL 23-25, 2007, Menlo Pk, CA, Times Cited 1 JJack Chessa ASSOCIATE PROFESSOR MECHANICAL ENGINEERING THE UNIVERSITY OF TEXAS AT EL PASO 500 WEST

Chessa, Jack

350

Molecular Anions Jack Simons  

E-print Network

the most recent version, click here (I found that Internet Explorer does a better job than other browsers Anions B. Selecting Specific Anions C. How Fields Are Used to Focus and Select Anions D. Problems? X. Reaction Paths XI. Summary Chapter 3. Chemically Conventional Anions I. What Makes these Anions

Simons, Jack

351

Geohydrological feasibility study of the Black Warrior Basin for the potential applicability of Jack W. McIntyre`s patented process  

SciTech Connect

Geraghty & Miller, Inc. of Midland, Texas conducted geological and hydrological feasibility studies of the potential applicability of Jack W. Mclntyre`s patented process for the recovery of natural gas from coalbed/sand formations in the Black Warrior Basin of Mississippi and Alabama through literature surveys. Methane gas from coalbeds in the Black Warrior Basin is confined to the coal fields of northern Alabama. Produced water from degasification of coalbeds is currently disposed by surface discharge. Treatment prior to discharge consists of short-term storage and in-stream dilution. Mr. Mclntyre`s process appears to be applicable to the Black Warrior Basin and could provide an environmentally sound alternative for produced water production.

Reed, P.D.

1994-03-01

352

Ectoparasites of sympatric cottontails (Sylvilagus audubonii Nelson) and jack rabbits (Lepus californicus Mearns) from the high plains of eastern New Mexico.  

PubMed

Eight species of ectoparasites were recovered from 35 Sylvilagus audubonii and 35 Lepus californicus occurring sympatrically near the Clovis-Portales area of eastern New Mexico. Recovered were Anoplura (Haemodipsus setoni), Diptera (Cuterebra lepusculi and Cuterebra ruficrus), Siphonaptera (Echidnophaga gallinacea and Euhoplopsyllus glacialis), and Acari (Ornithodoros parkeri, Dermacentor parumapertus, and Haemaphysalis leporispalustris). Jaccard's index showed a 50% ectoparasitic overlap with H. setoni, E. glacialis, D. parumapertus, and H. leporispalustris present on both host species. Cuterebra lepusculi, E. gallinacea, and Ornithodoros parkeri were taken only from S. audubonii, whereas C. ruficrus occurred only on jack rabbits. Euhoplopsyllus glacialis was the only species to demonstrate a preference for sex of host, occurring more abundantly on females. PMID:3418460

Pfaffenberger, G S; Valencia, V B

1988-10-01

353

Evolution of Conifer Diterpene Synthases: Diterpene Resin Acid Biosynthesis in Lodgepole Pine and Jack Pine Involves Monofunctional and Bifunctional Diterpene Synthases1[W][OA  

PubMed Central

Diterpene resin acids (DRAs) are major components of pine (Pinus spp.) oleoresin. They play critical roles in conifer defense against insects and pathogens and as a renewable resource for industrial bioproducts. The core structures of DRAs are formed in secondary (i.e. specialized) metabolism via cycloisomerization of geranylgeranyl diphosphate (GGPP) by diterpene synthases (diTPSs). Previously described gymnosperm diTPSs of DRA biosynthesis are bifunctional enzymes that catalyze the initial bicyclization of GGPP followed by rearrangement of a (+)-copalyl diphosphate intermediate at two discrete class II and class I active sites. In contrast, similar diterpenes of gibberellin primary (i.e. general) metabolism are produced by the consecutive activity of two monofunctional class II and class I diTPSs. Using high-throughput transcriptome sequencing, we discovered 11 diTPS from jack pine (Pinus banksiana) and lodgepole pine (Pinus contorta). Three of these were orthologous to known conifer bifunctional levopimaradiene/abietadiene synthases. Surprisingly, two sets of orthologous PbdiTPSs and PcdiTPSs were monofunctional class I enzymes that lacked functional class II active sites and converted (+)-copalyl diphosphate, but not GGPP, into isopimaradiene and pimaradiene as major products. Diterpene profiles and transcriptome sequences of lodgepole pine and jack pine are consistent with roles for these diTPSs in DRA biosynthesis. The monofunctional class I diTPSs of DRA biosynthesis form a new clade within the gymnosperm-specific TPS-d3 subfamily that evolved from bifunctional diTPS rather than monofunctional enzymes (TPS-c and TPS-e) of gibberellin metabolism. Homology modeling suggested alterations in the class I active site that may have contributed to their functional specialization relative to other conifer diTPSs. PMID:23370714

Hall, Dawn E.; Zerbe, Philipp; Jancsik, Sharon; Quesada, Alfonso Lara; Dullat, Harpreet; Madilao, Lina L.; Yuen, Macaire; Bohlmann, Jörg

2013-01-01

354

Evolution of conifer diterpene synthases: diterpene resin acid biosynthesis in lodgepole pine and jack pine involves monofunctional and bifunctional diterpene synthases.  

PubMed

Diterpene resin acids (DRAs) are major components of pine (Pinus spp.) oleoresin. They play critical roles in conifer defense against insects and pathogens and as a renewable resource for industrial bioproducts. The core structures of DRAs are formed in secondary (i.e. specialized) metabolism via cycloisomerization of geranylgeranyl diphosphate (GGPP) by diterpene synthases (diTPSs). Previously described gymnosperm diTPSs of DRA biosynthesis are bifunctional enzymes that catalyze the initial bicyclization of GGPP followed by rearrangement of a (+)-copalyl diphosphate intermediate at two discrete class II and class I active sites. In contrast, similar diterpenes of gibberellin primary (i.e. general) metabolism are produced by the consecutive activity of two monofunctional class II and class I diTPSs. Using high-throughput transcriptome sequencing, we discovered 11 diTPS from jack pine (Pinus banksiana) and lodgepole pine (Pinus contorta). Three of these were orthologous to known conifer bifunctional levopimaradiene/abietadiene synthases. Surprisingly, two sets of orthologous PbdiTPSs and PcdiTPSs were monofunctional class I enzymes that lacked functional class II active sites and converted (+)-copalyl diphosphate, but not GGPP, into isopimaradiene and pimaradiene as major products. Diterpene profiles and transcriptome sequences of lodgepole pine and jack pine are consistent with roles for these diTPSs in DRA biosynthesis. The monofunctional class I diTPSs of DRA biosynthesis form a new clade within the gymnosperm-specific TPS-d3 subfamily that evolved from bifunctional diTPS rather than monofunctional enzymes (TPS-c and TPS-e) of gibberellin metabolism. Homology modeling suggested alterations in the class I active site that may have contributed to their functional specialization relative to other conifer diTPSs. PMID:23370714

Hall, Dawn E; Zerbe, Philipp; Jancsik, Sharon; Quesada, Alfonso Lara; Dullat, Harpreet; Madilao, Lina L; Yuen, Macaire; Bohlmann, Jörg

2013-02-01

355

Geohydrologic Investigations and Landscape Characteristics of Areas Contributing Water to Springs, the Current River, and Jacks Fork, Ozark National Scenic Riverways, Missouri  

USGS Publications Warehouse

The Ozark National Scenic Riverways (ONSR) is a narrow corridor that stretches for approximately 134 miles along the Current River and Jacks Fork in southern Missouri. Most of the water flowing in the Current River and Jacks Fork is discharged to the rivers from springs within the ONSR, and most of the recharge area of these springs is outside the ONSR. This report describes geohydrologic investigations and landscape characteristics of areas contributing water to springs and the Current River and Jacks Fork in the ONSR. The potentiometric-surface map of the study area for 2000-07 shows that the groundwater divide extends beyond the surface-water divide in some places, notably along Logan Creek and the northeastern part of the study area, indicating interbasin transfer of groundwater between surface-water basins. A low hydraulic gradient occurs in much of the upland area west of the Current River associated with areas of high sinkhole density, which indicates the presence of a network of subsurface karst conduits. The results of a low base-flow seepage run indicate that most of the discharge in the Current River and Jacks Fork was from identified springs, and a smaller amount was from tributaries whose discharge probably originated as spring discharge, or from springs or diffuse groundwater discharge in the streambed. Results of a temperature profile conducted on an 85-mile reach of the Current River indicate that the lowest average temperatures were within or downstream from inflows of springs. A mass-balance on heat calculation of the discharge of Bass Rock Spring, a previously undescribed spring, resulted in an estimated discharge of 34.1 cubic feet per second (ft3/s), making it the sixth largest spring in the Current River Basin. The 13 springs in the study area for which recharge areas have been estimated accounted for 82 percent (867 ft3/s of 1,060 ft3/s) of the discharge of the Current River at Big Spring during the 2006 seepage run. Including discharge from other springs, the cumulative discharge from springs was over 90 percent of the river discharge at most of the spring locations, and was 92 percent at Big Spring and at the lower end of the ONSR. The discharge from the 1.9-mile long Pulltite Springs Complex measured in the 2006 seepage run was 88 ft3/s. Most of this (77 ft3/s) was from the first approximately 0.25 mi of the Pulltite Springs Complex. It has been estimated that the annual mean discharge from the Current River Springs Complex is 125 ft3/s, based on an apparent discharge of 50 ft3/s during a 1966 U.S. Geological Survey seepage run. However, a reinterpretation of the 1966 seepage run data shows that the discharge from the Current River Springs Complex instead was about 12.6 ft3/s, and the annual mean discharge was estimated to be 32 ft3/s, substantially less than 125 ft3/s. The 2006 seepage run showed a gain of only 12 ft3/s from the combined Round Spring and Current River Springs Complex from the mouth of Sinking Creek to 0.7 mi upstream from Root Hollow. The 2006 temperature profile measurements did not indicate any influx of spring discharge throughout the length of the Current River Springs Complex. The spring recharge areas with the largest number of identified sinkholes are Big Spring, Alley Spring, and Welch Spring. The spring recharge areas with the largest number of sinkholes per square mile of recharge area are Alley Spring, Blue Spring (Jacks Fork), Welch Spring, and Round Spring and the Current River Springs Complex. Using the currently known locations of losing streams, the Big Spring recharge area has the largest number of miles of losing stream, and the Bass Rock Spring recharge area has the largest number of miles of losing stream per unit recharge area. The spring recharge areas with the most open land and the least forested land per unit recharge area are Blue Spring (Jacks Fork), Welch Spring, Montauk Springs, and Alley Spring. The spring recharge areas with the least amount

Mugel, Douglas N.; Richards, Joseph M.; Schumacher, John G.

2009-01-01

356

Use of Habek Mint (Mentha longifolia) in Broiler Chicken Diets  

Microsoft Academic Search

An attempt has been conducted to evaluate the effect of habek on performance and immunity of broiler chickens. Five levels of whole habek, 0, 25, 100, 150 and 200 g\\/kg were incorporated into basal diet of 125 broilers for 5 weeks. The results of the study showed that including 150 g\\/kg habek into broiler diet make a significant improvement in

2004-01-01

357

Role of Medicinal Plants and Natural Products on Osteoporotic Fracture Healing  

PubMed Central

Popularly known as “the silent disease” since early symptoms are usually absent, osteoporosis causes progressive bone loss, which renders the bones susceptible to fractures. Bone fracture healing is a complex process consisting of four overlapping phases—hematoma formation, inflammation, repair, and remodeling. The traditional use of natural products in bone fractures means that phytochemicals can be developed as potential therapy for reducing fracture healing period. Located closely near the equator, Malaysia has one of the world's largest rainforests, which are homes to exotic herbs and medicinal plants. Eurycoma longifolia (Tongkat Ali), Labisia pumila (Kacip Fatimah), and Piper sarmentosum (Kaduk) are some examples of the popular ethnic herbs, which have been used in the Malay traditional medicine. This paper focuses on the use of natural products for treating fracture as a result of osteoporosis and expediting its healing. PMID:22973405

Abd Jalil, Mohd Azri; Shuid, Ahmad Nazrun; Muhammad, Norliza

2012-01-01

358

Geohydrologic feasibility study of the Powder River Basin for the potential application of a production process patented by Jack W. McIntyre  

SciTech Connect

Geraghty & Miller, Inc. of Midland, Texas conducted geologic and hydrologic feasibility studies of the potential applicability of a patented (US Patent Office No. 4,766,957) process developed by Jack W. McIntyre for the recovery of natural gas from coalbed/sand formations in the Powder River Basin. General research, based on a review of published literature from both private and public sources, indicates that the shallow, thick subbituminous coal seams found in the Powder River Basin exhibit significant potential for the application of this patented process. These coal deposits can be characterized, on the basis of established coalbed methane production, as being highly water productive. The desorption and economic recovery of coalbed methane, widely believed to be biogenic in origin, from these low-grade deposits will require the subsequent dewatering of these geologic formations. The patented process, developed by Mr. McIntyre and described in the compendium of this study, may offer a cost-effective means of methane recovery and downhole disposal of produced groundwaters.

Kvasnicka, D.E.

1993-08-01

359

Ants with Attitude: Australian Jack-jumpers of the Myrmecia pilosula species complex, with descriptions of four new species (Hymenoptera: Formicidae: Myrmeciinae).  

PubMed

The six known "Jack-jumper species Myrmecia pilosula Fr. Smith 1858, M. croslandi Taylor 1991, M. banksi, M. haskinsorum, M. imaii and M. impaternata spp.n. are reviewed, illustrated and keyed. Myrmecia imaii is known only from southwest Western Australia, the others variously from southeastern Australia and Tasmania. These taxa were previously confused under the name M. pilosula (for which a lectotype is designated). Previous cytogenetical findings, which contributed importantly to current taxonomic understanding, are summarized for each species. Eastern and Western geographical races of the widespread M. pilosula are recognized. Myrmecia croslandi is one of only two eukaryote animals known to possess a single pair of chromosomes (2n=2 3 or 4). Myrmecia impaternata is evidentially an allodiploid (n=5 or 14, 2n=19) sperm-dependent gynogenetic hybrid between M. banksi and an element of the eastern race of M. pilosula, or their immediate ancestry. The sting-injected venom of these ants can induce sometimes fatal anaphylaxis in sensitive humans.  PMID:25661627

Taylor, Robert W

2015-01-01

360

Cratoxylum formosum (Jack) Dyer ssp. pruniflorum (Kurz) Gogel. (Hóng yá mù) extract induces apoptosis in human hepatocellular carcinoma HepG2 cells through caspase-dependent pathways  

PubMed Central

Background Cratoxylum formosum (Jack) Dyer ssp. pruniflorum (Kurz) Gogel. (Hóng yá mù) (CF) has been used for treatment of fever, cough, and peptic ulcer. Previously, a 50% ethanol-water extract from twigs of CF was shown highly selective in cytotoxicity against cancer cells. This study aims to investigate the molecular mechanisms underlying the apoptosis-inducing effect of CF. Methods The cytotoxicity of CF was evaluated in the human hepatocellular carcinoma (HCC) HepG2 cell line in comparison with a non-cancerous African green monkey kidney epithelial cell line (Vero) by a neutral red assay. The apoptosis induction mechanisms were investigated through nuclear morphological changes, DNA fragmentation, mitochondrial membrane potential alterations, and caspase enzyme activities. Results CF selectively induced HepG2 cell death compared with non-cancerous Vero cells. A 1.5-fold higher apoptotic effect compared with melphalan was induced by 120 ?g/mL of the 50% ethanol-water extract of CF. The apoptotic cell death in HepG2 cells occurred via extrinsic and intrinsic caspase-dependent pathways in dose- and time-dependent manners by significantly increasing the activities of caspase 3/7, 8, and 9, decreasing the mitochondrial membrane potential, and causing apoptotic body formation and DNA fragmentation. Conclusions CF extract induced a caspase-dependent apoptosis in HepG2 cells. PMID:24708784

2014-01-01

361

Spawning ground and larval transport processes of jack mackerel Trachurus japonicus in the shelf-break region of the southern East China Sea  

NASA Astrophysics Data System (ADS)

Horizontal distribution patterns of jack mackerel Trachurus japonicus larvae were investigated extensively in the East China Sea (ECS) along the shelf-break region between 26° and 30°N during February-March based on fine-scale larval sampling in 2002 and 2003. A total of 2363 T. japonicus ranging from 1.2 to 12.4 mm body length (BL) were collected at 310 bongo net sampling stations, of which larvae <10 mm BL accounted for 99.1%. In both years, newly hatched larvae (<3 mm BL) were concentrated in the shelf-break region mainly in the southern part of ECS between 26° and 27°N in warm water of 21-23 °C, suggesting that their primary spawning ground existed in and around this area. With growth, larvae were transported in two different directions, i.e., northward and northeastward, corresponding closely with the direction of the Kuroshio Branch Current north of Taiwan (KBCNT) and the Kuroshio, respectively. Replicate sampling cruises at 2 week intervals were conducted in 2003, and the larval distribution pattern changed significantly between the sampling cruises, suggesting that the transport process fluctuates over relatively short periods in relation to oceanographic processes. The transport speed by the KBCNT was estimated to be 0.13-0.28 knots based on the larval distribution, which is one order of magnitude slower than that by the Kuroshio (1.5-3 knots). Habitat temperature gradually declined with growth in both the Kuroshio and KBCNT, but in the KBCNT it was 1-2 °C lower than in the Kuroshio. Our results suggest that the two different larval transport processes lead to a significant difference in the transport route, habitat conditions (such as temperature and food), and site where young fish recruit to the demersal habitat, which will result in different survival and recruitment processes.

Sassa, Chiyuki; Tsukamoto, Youichi; Nishiuchi, Kou; Konishi, Yoshinobu

2008-10-01

362

Geohydrologic feasibility study of the Northern and Central Appalachian basin areas for the potential application of a production process patented by Jack W. McIntyre  

SciTech Connect

Geraghty & Miller, Inc. of Midland, Texas conducted geologic and hydrologic feasibility studies of the potential applicability of a patented (US Patent Office No. 4,766,957) process developed by Jack W. McIntyre for the recovery of natural gas from coalbed/sand formations in the Northern and Central Appalachian basin areas. General research, based on a review of published literature from both public and private sources, indicates that the generally thin, but numerous coalbeds found in the greater Appalachian Basin area do exhibit some potential for the application of this patented process. Estimates of total gas reserves in-place (Gas Research Institute, July 1991) for coalbeds in the Central and Northern Appalachian Basin areas are 5 trillion cubic feet (TCF) and 61 TCF respectively. Produced waters associated with coal deposits in the greater Appalachian Basin area can be characterized on the basis of established but limited production of coalbed methane. Central Appalachian coals generally produce small quantities of water (less than 50 barrels of water per day for the average producing well) which is high in total dissolved solids (TDS), greater than 30,000 parts per million (ppM). The chemical quality of water produced from these coal seams represents a significant disposal challenge to the operators of methane-producing wells in the Central Appalachian Basin. By contrast, water associated with the production of coalbed methane in the Northern Appalachian Basin is generally fair to good quality, and daily production volumes are low. However, the relatively slow desorption of methane gas from Northern Appalachian coals may result in a greater net volume of produced water over the economic life of the well. The well operator must respond to long-term disposal needs.

Kvasnicka, D.

1994-03-01

363

Tracing the provenance and recrystallization processes of the Earth's oldest detritus at Mt. Narryer and Jack Hills, Western Australia: An in situ Sm-Nd isotopic study of monazite  

NASA Astrophysics Data System (ADS)

Mount Narryer and Jack Hills metasedimentary rocks in the Narryer Gneiss Complex of the Yilgarn Craton, Western Australia, contain zircons with ages up to 4.4 Ga, the oldest known crustal materials on Earth, and monazites up to 3.6 Ga. In this study, we have investigated 147Sm- 143Nd systematics of detrital and metamorphic monazites from these metasedimentary rocks using laser ablation-multicollector-inductively coupled plasma mass spectrometry (LA-MC-ICPMS). All detrital monazites have negative initial ?Nd(t) values, indicating that their parental magmas formed by remelting of older crustal materials. A comparison between the initial ?Nd(t) values of the detrital monazites and granitoids in the Narryer Gneiss Complex indicates that the Mt. Narryer and Jack Hills sediments were partly derived from the most isotopically enriched surrounding granitoids with ages of ca. 3.6 and 3.3 Ga. The metamorphic monazites generally have lower initial ?Nd(t) values when compared to the detrital monazites. However, the detrital and metamorphic monazites show similar distributions of ?Nd(t) at the ages of sediment deposition (3.28 Ga for Mt. Narryer and 3.05 Ga for Jack Hills). In addition, multiple analyses on single monazite grains having core-rim structures reveal that the cores and the recrystallized rims had identical Nd isotopic compositions at the time of recrystallization. These findings indicate that older monazites are source of light rare earth elements for younger metamorphic monazite formation and, therefore, that monazite can inherit its primary Sm-Nd isotopic signature during the recrystallization processes. We calculated the Nd model ages for all analyzed monazites to estimate crustal residence time of their source materials. We find that no igneous monazites older than 4.0 Ga were recrystallized to form the monazites. This implies that the lack of Hadean monazites is not due to recrystallization of ancient monazites during later metamorphism, but due to high-Ca compositions of the parental magmas of Hadean detritus, which prevent growth of magmatic monazite.

Iizuka, Tsuyoshi; Nebel, Oliver; McCulloch, Malcolm T.

2011-08-01

364

Jack Oliver (1923-2011)  

E-print Network

develop- ment. The first was Paul Brown, his high-school American-football coach in Massillon, Ohio -- who was famously intolerant of prima donnas, and Oliver's philosophy of science and administration followed had gone before offered a high probability of scientific discovery, and that discovery was fun -- jet

Mojzsis, Stephen J.

365

Pre-election JACK PEZZEY  

E-print Network

of cutting Australia's green- house gas emissions without waiting for a global treaty - and using to pin down either party on the second big question about emissions trading: its fairness' Will either party tell us who will get the tradeable emission per- mits when they're created' For while emissions

Pezzey, Jack

366

Overview of HPC Jack Dongarra  

E-print Network

Fundamental limits are being approached. ffl More cost effective solution Example: Weather Prediction (Navier­Stokes) with 3D Grid around the Earth 6 variables 8 ? ? ? ? ? ? ? ? ! ? ? ? ? ? ? ? ? : temperature pressure General­purpose: cost­effective for a wide range of ap­ plications #12; 5 Scalable Multiprocessors What

Dongarra, Jack

367

X-15 #2 on lakebed after engine failure forced pilot Jack McKay to make an emergency landing at Mud  

NASA Technical Reports Server (NTRS)

On 9 November 1962, an engine failure forced Jack McKay, a NASA research pilot, to make an emergency landing at Mud Lake, Nevada, in the second X-15 (56-6671); its landing gear collapsed and the X-15 flipped over on its back. McKay was promptly rescued by an Air Force medical team standing by near the launch site, and eventually recovered to fly the X-15 again. But his injuries, more serious than at first thought, eventually forced his retirement from NASA. The aircraft was sent back to the manufacturer, where it underwent extensive repairs and modifications. It returned to Edwards in February 1964 as the X-15A-2, with a longer fuselage (52 ft 5 in) and external fuel tanks. The basic X-15 was a rocket-powered aircraft 50 ft long with a wingspan of 22 ft. It was a missile-shaped vehicle with an unusual wedge-shaped vertical tail, thin stubby wings, and unique side fairings that extended along the side of the fuselage. The X-15 weighed about 14,000 lb empty and approximately 34,000 lb at launch. The XLR-99 rocket engine, manufactured by Thiokol Chemical Corp., was pilot controlled and was capable of developing 57,000 lb of thrust. North American Aviation built three X-15 aircraft for the program. The X-15 research aircraft was developed to provide in-flight information and data on aerodynamics, structures, flight controls, and the physiological aspects of high-speed, high-altitude flight. A follow-on program used the aircraft as a testbed to carry various scientific experiments beyond the Earth's atmosphere on a repeated basis. For flight in the dense air of the usable atmosphere, the X-15 used conventional aerodynamic controls such as rudder surfaces on the vertical stabilizers to control yaw and movable horizontal stabilizers to control pitch when moving in synchronization or roll when moved differentially. For flight in the thin air outside of the appreciable Earth's atmosphere, the X-15 used a reaction control system. Hydrogen peroxide thrust rockets located on the nose of the aircraft provided pitch and yaw control. Those on the wings provided roll control. Because of the large fuel consumption, the X-15 was air launched from a B-52 aircraft at 45,000 ft and a speed of about 500 mph. Depending on the mission, the rocket engine provided thrust for the first 80 to 120 sec of flight. The remainder of the normal 10 to 11 min. flight was powerless and ended with a 200-mph glide landing. Generally, one of two types of X-15 flight profiles was used; a high-altitude flight plan that called for the pilot to maintain a steep rate of climb, or a speed profile that called for the pilot to push over and maintain a level altitude. The X-15 was flown over a period of nearly 10 years--June 1959 to Oct. 1968--and set the world's unofficial speed and altitude records of 4,520 mph (Mach 6.7) and 354,200 ft in a program to investigate all aspects of manned hypersonic flight. Information gained from the highly successful X-15 program contributed to the development of the Mercury, Gemini, and Apollo manned spaceflight programs, and also the Space Shuttle program. The X-15s made a total of 199 flights, and were manufactured by North American Aviation. X-15-1, serial number 56-6670, is now located at the National Air and Space Museum, Washington DC. North American X-15A-2, serial number 56-6671, is at the United States Air Force Museum, Wright-Patterson AFB, Ohio. The X-15-3, serial number 56-6672, crashed on 15 November 1967, resulting in the death of Maj. Michael J. Adams.

1962-01-01

368

WESTERN GREAT PLAINS SANDHILL SHRUBLAND extent exaggerated for display  

E-print Network

/ Bouteloua (curtipendula, gracilis) Shrubland Artemisia filifolia / Calamovilfa longifolia Shrubland, Sporobolus cryptandrus, Calamovilfa longifolia, Calamovilfa gigantea, Hesperostipa comata, and Bouteloua spp

369

Cardicola beveridgei n. sp. (Digenea: Aporocotylidae) from the mangrove jack, Lutjanus argentimaculatus (Perciformes: Lutjanidae), and C. bullardi n. sp. from the Australian spotted mackerel, Scomberomorus munroi (Perciformes: Scombridae), from the northern Great Barrier Reef.  

PubMed

Cardicola Short, 1953 is a genus of the Aporocotylidae Odhner, 1912 (Digenea), with 25 currently recognised species described from 32 species of Perciformes and Mugiliformes fishes around the world, including eight species from the Great Barrier Reef. Here, we describe two new species from this region, namely Cardicola beveridgei n. sp. from the ventricle and atrium of the mangrove jack, Lutjanus argentimaculatus (Forsskål) (Perciformes: Lutjanidae), and Cardicola bullardi n. sp. from the ventricle of the Australian spotted mackerel, Scomberomorus munroi Collette & Russo (Perciformes: Scombridae), from off Lizard Island, Queensland, Australia. These two new species are most easily distinguished from the 25 current members of Cardicola in having the combination of i) a spinous oral sucker, ii) an anteriorly intercaecal ovary, iii) a uterus that extends anteriorly from the oötype, iv) the number of spines per ventrolateral transverse row, and in v) body size and the length/width ratio, vi) the oesophagus and caecal length(s) relative to body total length, vii) the length of the posterior caeca relative to the anterior pair, viii) the testis length/width ratio and its total size relative to that of the body, ix) the postovarian field as a percentage of body length, and x) egg size. In addition, C. beveridgei n. sp. is further differentiated by possessing a female genital pore that opens anterodextral to the male pore while C. bullardi n. sp. differs further in possessing a testis that is almost entirely intercaecal and does not extend anteriorly to the level of the intestinal bifurcation. Employing genetic analysis of ITS2 rDNA sequence data, representing these species and a further 13 recognised and three putative species of Cardicola, we were able to unequivocally confirm these specimens as distinct (9-22% different over 420 nucleotide positions). Distance analysis of ITS2 showed that i) species of Cardicola from the Siganidae formed a monophyletic clade, to the exclusion of other Cardicola species reported from the Scombridae, Sparidae, Lutjanidae and Chaetodontidae, ii) a general phylogenetic isolation exists between the species of Cardicola reported from scombrid fishes, and iii) C. beveridgei n. sp. and Cardicola milleri Nolan & Cribb, 2006 from lutjanids and Cardicola chaetodontis Yamaguti, 1970 from chaetodontids are phylogenetically close, despite the evolutionary remoteness between the host groups and their highly disparate biology. Given the likelihood of many additional species being attributed to Cardicola, we predict that continued molecular analyses will indicate that this genus will prove to incorporate a series of radiations in association with particular fish taxa as well as evidence of host-switching. (Nucleotide sequences reported in this paper are available in the GenBank database under accession no. KF752497). PMID:24980892

Nolan, Matthew J; Miller, Terrence L; Cutmore, Scott C; Cantacessi, Cinzia; Cribb, Thomas H

2014-10-01

370

Co-composting of invasive Acacia longifolia with pine bark for horticultural use.  

PubMed

The feasibility of commercial-scale co-composting of waste biomass from the control of invasive Acacia species with pine bark waste from the lumber industry, in a blend ratio of 60:40 (v:v), was investigated and compared with previous research on the composting of Acacia without additional feedstock, to determine the potential process and end-product quality benefits of co-composting with bark. Pile temperatures rose rapidly to >70?°C and were maintained at >60?°C for several months. Acacia and bark biomass contained a large fraction of mineralizable organic matter (OM) equivalent to approximately 600?g?kg(-1) of initial OM. Bark was more recalcitrant to biodegradation compared with Acacia, which degraded at twice the rate of bark. Therefore, incorporating the bark increased the final amount of compost produced compared with composting Acacia residues without bark. The relatively high C/N ratio of the composting matrix (C/N?=?56) and NH3 volatilization explained the limited increases in [Formula: see text] content, whereas concentrations of conservative nutrient elements (e.g. P, K, Ca, Mg, Fe) increased in proportion to OM mineralization, enriching the compost as a nutrient source for horticultural use. Nitrogen concentrations also increased to a small extent, but were much more dynamic and losses, probably associated with N volatilization mechanisms, were difficult to actively control. The physicochemical characteristics of the stabilized end-product, such as pH, electrical conductivity and OM content, were improved with the addition of bark to Acacia biomass, and the final compost characteristics were suitable for use for soil improvement and also as horticultural substrate components. PMID:25559143

Brito, Luis Miguel; Mourão, Isabel; Coutinho, João; Smith, Stephen R

2015-07-01

371

C3 Photosynthesis in the Gametophyte of the Epiphytic CAM Fern Pyrrosia Longifolia (Polypodiaceae)  

E-print Network

— — ' 1 < t 1 GAM 12 17 22 Time of day 8 Fig. 1. Net C 0 2 exchange (negative values indicate C 0 2 loss) throughout a 24-hour period for a mature sporophyte (MSP), a group of immature sporophytes (ISP), and a group of gametophytes (GAM... sporophytes exhibited C 3 photosynthesis. The ex- MSP ISP GAM Fig. 2. Malate concentrations of tissue collected in the morning (solid bars) and evening (hatched bars) for mature sporophytes (MSP), im­ mature sporophytes (ISP), and gametophytes (GAM...

Martin, Craig E.; Allen, Mitchell T.; Haufler, Christopher H.

1995-01-01

372

Effect of Tongkat Ali on stress hormones and psychological mood state in moderately stressed subjects  

PubMed Central

Background Eurycoma longifolia is a medicinal plant commonly called tongkat ali (TA) and “Malaysian ginseng.” TA roots are a traditional “anti-aging” remedy and modern supplements are intended to improve libido, energy, sports performance and weight loss. Previous studies have shown properly-standardized TA to stimulate release of free testosterone, improve sex drive, reduce fatigue, and improve well-being. Methods We assessed stress hormones and mood state in 63 subjects (32 men and 31 women) screened for moderate stress and supplemented with a standardized hot-water extract of TA root (TA) or Placebo (PL) for 4?weeks. Analysis of variance (ANOVA) with significance set at p?

2013-01-01

373

GEOTHERMAL HEAT PUMPS Jack DiEnna  

E-print Network

of Wisconsin, determined that a cubic foot of "ordinary" soil has a heat capacity of 40 btu's (when cooled 1 gas emissions do GHPs reduce according to the EPA. ANSWER: Forty (40) Percent #12;Question: How many NOT TO OVER PROMISE. #12;One of the problems of our industry is that we continually talk about PRICE, We have

374

(Jack) John Erwin Tumblin Associate Professor  

E-print Network

,873,585 during the course of this work. My work on IVEX-sponsored consulting for Scientific-Atlanta Inc Funding: Title Funding Source Dates Role Computational Photography Research Gift (from Mitsubishi Electric Photography research) Adobe Systems, Inc ($25,000 renewable) 2006-2007 P. I. Evaluating High Dynamic Range

Tumblin, Jack

375

Jack M. Loomis Department of Psychology  

E-print Network

by integrating the velocity vector. Acceleration- based navigation (called inertial navigation or path.cmu.edu Navigation System for the Blind: Auditory Display Modes and Guidance Abstract The research we are reporting here is part of our effort to develop a navigation sys- tem for the blind. Our long-term goal

Klatzky, Roberta

376

Interview of Jack Goody, 18 May 1991  

E-print Network

throughout the world, which gave openings for educationalists 0:29:40 Ghana field work gave a two-year period for observing and thinking on all aspects of life and the productive process; a revelation; interested in sociology of literature, oral cultures... to another; example of the wheel in Ghana which is imported and not made there, no carts so no wheelwrights, thus dependence on the outside world; no change in the social organization of production 1:16:21 Three strands in writing: family and marriage...

Goody, Jack

2004-06-07

377

Jack Dongarra A Historical Overview and  

E-print Network

closely. In 1965, Gordon Moore one of the founders of Intel, conjectured that the number of transistors performance was the main, if not the only, selling point for supercomputers of this variety. However

Dongarra, Jack

378

Jack in the box: inguinal endometriosis.  

PubMed

A 39-year-old woman with a left-sided inguinal swelling was referred to us with a diagnosis of inguinal hernia. On asking leading questions, the patient gave a typical history of cyclical pain and increased swelling during menstruation. Fine-needle aspiration biopsy revealed endometrial glands. Preoperatively, the extent of the endometriotic lesion was delineated using MRI. The lesion was approached through the patient's caesarean scar for cosmetic reasons and excised in toto. Final diagnosis was round ligament endometriosis. The patient was asymptomatic at 3, 6 and 12?months' follow-up. This case re-emphasises the fact that endometriosis is an enigmatic disease and can be found anywhere in the body. Thus, a woman of reproductive age presenting with any cyclical symptom should be asked about its relation to her menstrual cycle. PMID:25827916

Pandey, Deeksha; Coondoo, Ambika; Shetty, Jyothi; Mathew, Stanley

2015-01-01

379

Jack A. Speer Alcoa Wenatchee Works  

E-print Network

the costs and benefits of the Federal Columbia River Power System (FCRPS) in the Pacific Northwest after 2006. This is a fundamental decision that will impact the lives of millions of people in the Northwest plants can economically survive in the Northwest. Some people will argue that because the Northwest Power

380

Franoise Winnik, Jack Siemiatycki et Andr Blais  

E-print Network

- nes atteints de cancer. «Cette approche ne remplacera pas les traitements médicaux et pharmaceutiques séan- ces de 90 minutes chacune, 14 patients âgés de 11 à 18 ans qui ont reçu un diagnostic de cancer des ateliers de réduction du stress appelés en anglais Mindfulness- Based Stress Reduction [...] Ils

Montréal, Université de

381

2000 Annual Report Dr. Jack B. Howard  

E-print Network

Building­Room 310 New Jersey Institute of Technology University Heights Newark, NJ 07102 973/642-7496 fax......................16 Transport and Transformation..........46 Monitoring and Source Attribution...86 Key Personnel 95 and maintain compliance with the provisions of the Clean Air Act Amendments (CAAA) of 1990, particularly those

382

Jack L. Demmons/Bonner School Photographs  

NSDL National Science Digital Library

The University of Montana's Mansfield Library website offers a collection of photos of life in Montana from the late 1800s to the 1950s. Interestingly, the "photographs were used extensively in historic research required by the Superfund law when the Milltown Reservoir was designated a Superfund site in early 1980." Visitors can browse the 1760 item collection via the "Montana Memory Project" link near the top of the page. Those who want to search the collection can use the drop down boxes below the browse link, and choose "Search All Words", "Search Any Word", or "Match Exact Phrase". Interested users can retrieve over 100 photos of saw mills and copper mills simply by putting mill in the "search any word" drop down box on the homepage. The importance of the mill in the community is evident where the mill is identified in photos even when only the tiniest sliver of it is visible.

383

AHNAK: the giant jack of all trades.  

PubMed

The nucleoprotein AHNAK is an unusual and somewhat mysterious scaffolding protein characterised by its large size of approximately 700 kDa. Several aspects of this protein remain uncertain, including its exact molecular function and regulation on both the gene and protein levels. Various studies have attempted to annotate AHNAK and, notably, protein interaction and expression analyses have contributed greatly to our current understanding of the protein. The implicated biological processes are, however, very diverse, ranging from a role in the formation of the blood-brain barrier, cell architecture and migration, to the regulation of cardiac calcium channels and muscle membrane repair. In addition, recent evidence suggests that AHNAK might be yet another accomplice in the development of tumour metastasis. This review will discuss the different functional roles of AHNAK, highlighting recent advancements that have added foundation to the proposed roles while identifying ties between them. Implications for related fields of research are noted and suggestions for future research that will assist in unravelling the function of AHNAK are offered. PMID:25172424

Davis, T A; Loos, B; Engelbrecht, A-M

2014-12-01

384

JACK E. CERMAK University Distinguished Professor Emeritus  

E-print Network

& Diffusion Research Standing: Calvin Finn Charles Britton Hsieh Shen Gilbert Binder H. Chuang Sitting: Shozo of Wind Loads on Structures Full Aeroelastic Study Kang-Pyo Cho Pressure Studies on Low-rise Buildings

385

OCCURRENCE REPORTING Approved by Jack Salazar  

E-print Network

.2 Responsibilities 15.2.1 Division Directors 15.2.2 Division ORPS Designees 15.2.3 Environment, Health, and Safety 2 -- Personnel Health and Safety 15.4.1.3 Group 3 -- Nuclear Safety Basis 15.4.1.4 Group 4. the health and safety of employees, guests, visitors, and the general public; b. the environment; c

386

SEPHIROT: SCENARIO for CREATION AUTOMATICALLY from DIGITS AVERAGED-PROBABILITY Newcomb-Benford Log-Law: Inflation, BosonS, a Maxwell-Boltzmann Big-Bang Fireball, FermionS, HDE, HDM, CMB; UTTER-SIMPLICITY PURPOSELY SANS ANYthing!!!: It's a Jack-in-the-Box Univers: A Consciousness? EMET/TRUTH!!!  

NASA Astrophysics Data System (ADS)

Siegel[http://fqxi.org/community/forum/topic/1553]: TEN-DIGITS[0,,9]; PROBABILITY AVERAGE LOG-Law SCALE-INVARIANCE; Utter-Simplicity: ``Complexity'' (Versus ``Complicatedness''); Zipf-law/ Hyperbolicity/ Inevitability (Archimedes), vs, Pareto-law, SCENARIO AUTOMATICALLY CREATES a UNIVERSE: inflation, a big-bang, bosons(E) ->Mellin-(c2)-tranform->fermions(m), hidden-dark-energy(HDE), hidden-dark-matter(HDM), cosmic-microwave-background(CMB), supersymmetry(SUSY) PURPOSELY SANS ANY: theories, models, mechanisms, processes, parameters, assumptions,WHATSOEVER: It's a'' Jack-in-the-Box'' Universe!!! ONLY VIA: Bose-Euler[(1732)] sum=product over-reals R-Riemann[Monats. Akad.,(1859)] sum=product over-complexs)-Bernoulli-Kummer-Newcomb[Am. J. Math. 4(1), 39(1881) THE discovery of the QUANTUM!!!]-Planck(1901)]-Einstein(1905)]-Sommerfeld-Poincare[Calcul des Probabilités, 313 (1912)]-Weyl[Goett. Nach.(1914); Math. Ann. 77, 313(1916)]-(Bose(1924)-Einstein(1925)]-VS.

Carl-Ludwig Siegel, Edward

2013-03-01

387

SEPHIROT: Scenario for Universe-Creation AUTOMATICALLY from Digits On-Average Euler-Bernoulli-Kummer-Riemann-Newcomb-Poincare-Weyl-Benford-Kac-Raimi-Hill-Antonoff-Siegel ``Digit-Physics'' Logarithm-Law: ``It's a Jack-in-the-Box Universe'': EMET/TRUTH!!!  

NASA Astrophysics Data System (ADS)

SEPHIROT: Siegel[http://fqxi.org/community/forum/topic/1553]: Ten-[0->9]-Digits; Average Log-Law SCALE-Invariance; Utter-Simplicity: ``Complexity'' (vs. ``Complicatedness''); Zipf-law/Hyperbolicity/ Inevitability SCENARIO AUTOMATICALLY CREATES & EVOLVES a UNIVERSE: inflation, a big-bang, bosons(E)->Mellin-(c2)-tranform->fermions(m), hidden-dark-energy(HDE), hidden-dark-matter (HDM), cosmic-microwave-background(CMB), supersymmetry(SUSY), PURPOSELY NO: theories,models,mechanisms,processes, parameters,assumptions,WHATSOEVER: It's a ``Jack-in-the-Box'' Universe!!!: ONLY VIA: Newcomb [Am.J.Math.4(1),39(1881)]QUANTUM-discovery!!!-Benford-Siegel-Antonoff[AMS.Joint-Mtg.(02)-Abs.#973-60-124!!!] inversion to ONLY BEQS with d=0 BEC: ``Digit-Physics''!; Log fixed-point invariance(s): [base=units=SCALE] of digits classic (not classical!) average [CAUSING] log statistical-correlations =log(1+1/d), with physics-crucial d=0 BEC singularity/pole, permits SEPHIROT!!!: ``digits are quanta are bosons because bosons are and always were digits!!!'': Digits = Bosons with d=0 BEC(!!!) & expansion to Zipf-law Hyperbolicity INEVITABILITY CMB!

Siegel, Edward Carl-Ludwig; Young, Frederic; Wignall, Janis

2013-04-01

388

First Report of Veronica Rust by Puccinia veronicae-longifoliae in Minnesota on Veronica spicata Royal Candles  

Technology Transfer Automated Retrieval System (TEKTRAN)

In September 2008, Veronica spicata Royal Candles plants showing foliar symptoms typical of a rust infection were brought to the Plant Disease Clinic at the University of Minnesota by a commercial nursery. A dark brown discoloration was apparent on the upper surface of the leaf with lighter brown pu...

389

GERMINAÇÃO DE SEMENTES DE SAPUVA (Machaerium stiptatum (DC.) Vog) E DE ACÁCIA MARÍTIMA (Acacia longifolia (Andr.) Wildenow)  

Microsoft Academic Search

The aim of this research was to determine the best combination among three temperatures (20°C, 25 o C and 30°C) and four substratos (rolled paper, filter paper, sand and vermiculite), for germination of \\

S. Medeiros; Ayrton Zanon

390

The potential influence of plant-based feed supplements on sperm quantity and quality in livestock: a review.  

PubMed

The reproductive performance of male livestock is of economic importance, and improving semen quantity and quality, especially for artificial insemination, additionally helps to avoid the loss of valuable genotypes. The review focuses on the impact of oxidative stress on sperm production and quality in livestock, and the potential role of plant based anti-oxidants to control this impact. From scientific reports dealing with livestock, the paper compiles evidence on effective dietary measures affecting sperm production and quality. Where little or no data are available on livestock, it refers to sources regarding other mammals, including man. The review concentrates on the use of distinct plants as feed supplements rather than on ways to treat deficiencies and imbalances in energy or macro- and micronutrients. Feeding of maca (Lepidium meyenii) and khat (Catha edulis) has been shown to positively affect sperm production and quality in animals. Some evidence points to favourable effects of leucaena (Leucaena leucocephala and Leucaena pallida), sesbania (Sesbania sesban), pomegranate (Punica granatum), tomato (Solanum lycopersicum) and amaranth (Amaranthus hypochondriacus) as well, but studies are either superficial or results are partially contradictory. Finally, the review considers the potential usefulness of medicinal herbs. The list of such plants includes Chinese herbs such as Lycium barbarum, Astralagus membranaceus, Acanthopanacis senticosi, Magnolia officinalis, Cornus officinalis and Psoralea corylifolia and the Indonesian plant Eurycoma longifolia. European candidate plants are Tribulus terrestris and Pendulum murex. Future research should include the screening of other plants, concentrating on the large number of plants rich in metabolites because of their presumed effectiveness. The modes of action often require clarification for the plants with demonstrated effects. PMID:22575847

Clément, C; Witschi, U; Kreuzer, M

2012-05-01

391

Plant-based medicines for anxiety disorders, Part 1: a review of preclinical studies.  

PubMed

Research in the area of herbal psychopharmacology has revealed a variety of promising medicines that may provide benefit in the treatment of general anxiety and specific anxiety disorders. However, a comprehensive review of plant-based anxiolytics has been absent to date. This article (part 1) reviews herbal medicines for which only preclinical investigations for anxiolytic activity have been performed. In part 2, we review herbal medicines for which there have been clinical investigations for anxiolytic activity. An open-ended, language-restricted (English) search of MEDLINE (PubMed), CINAHL, Scopus and the Cochrane Library databases was conducted (up to 28 October 2012) using specific search criteria to identify herbal medicines that have been investigated for anxiolytic activity. This search of the literature revealed 1,525 papers, from which 53 herbal medicines were included in the full review (having at least one study using the whole plant extract). Of these plants, 21 had human clinical trial evidence (reviewed in part 2), with another 32 having solely preclinical studies (reviewed here in part 1). Preclinical evidence of anxiolytic activity (without human clinical trials) was found for Albizia julibrissin, Sonchus oleraceus, Uncaria rhynchophylla, Stachys lavandulifolia, Cecropia glazioui, Magnolia spp., Eschscholzia californica, Erythrina spp., Annona spp., Rubus brasiliensis, Apocynum venetum, Nauclea latifolia, Equisetum arvense, Tilia spp., Securidaca longepedunculata, Achillea millefolium, Leea indica, Juncus effusus, Coriandrum sativum, Eurycoma longifolia, Turnera diffusa, Euphorbia hirta, Justicia spp., Crocus sativus, Aloysia polystachya, Albies pindrow, Casimiroa edulis, Davilla rugosa, Gastrodia elata, Sphaerathus indicus, Zizyphus jujuba and Panax ginseng. Common mechanisms of action for the majority of botanicals reviewed primarily involve GABA, either via direct receptor binding or ionic channel or cell membrane modulation; GABA transaminase or glutamic acid decarboxylase inhibition; a range of monoaminergic effects; and potential cannabinoid receptor modulation. Future research should focus on conducting human clinical trials on the plants reviewed with promising anxiolytic activity. PMID:23436255

Sarris, Jerome; McIntyre, Erica; Camfield, David A

2013-03-01

392

Updated 1-12 Jack Davis, Ph.D  

E-print Network

technology for radiation source development and high energy density matter for both the Navy and DoD. He specializing in nuclear weapons effects and simulation. Dr. Davis earned his bachelor's of science and master of the American Physical Society. He has served on numerous program review and other committees for the Do

393

Consequences of dispersal of subtropically spawned crevalle jacks, Caranx hippos,  

E-print Network

of the middle Atlantic states in autumn, similar-size fish appeared on the inner continental shelf. We pos A. rostrata drift for up to one year (Kleckner and McCleave, 1985) through gyres in the southwest

394

CCD Double Star Measures: Jack Jones Observatory Report #2  

NASA Astrophysics Data System (ADS)

This paper submits 44 CCD measurements of 41 multiple star systems for inclusion in the WDS. Observations were made during the calendar year 2008. Measurements were made using a CCD camera and an 11" Schmidt-Cassegrain telescope. Brief discussions of pertinent observations are included.

Jones, James L.

2009-10-01

395

CD Double Star Measures: Jack Jones Memorial Observatory Report #3  

NASA Astrophysics Data System (ADS)

This paper submits 114 CCD measurements of 92 multiple star systems for inclusion in the WDS. Observations were made during the calendar year 2007. Measurements were obtained using either an SBIG ST-7 CCD camera or an SBIG ST-8 CCD camera and an 11-inch SCT. Selected double stars are discussed. Negative findings are included for certain stars.

Jones, James L.

2010-10-01

396

CCD Double Star Measures: Jack Jones Memorial Observatory Report #1  

NASA Astrophysics Data System (ADS)

This paper reports on 63 CCD measurements of 58 multiple star systems observed between 2003 and 2007. It also reports on delta mag(V) measurements of selected doubles. Measurements were made using a CCD camera and 8" or 11" SCT. A brief description of methods used is provided.

Jones, James

2008-01-01

397

Graduate Council Meeting Agenda 310 Jack K. Williams Administration Building  

E-print Network

and Industrial Distribution request to Add TAMU-Qatar to Approved Residency Week Locations b. College of Liberal Coastal Marine Biology and Geology of Alaska f. VIBS 688 Epidemiological Modeling of Infectious Diseases

398

RNA: Jack of All Trades and Master of All.  

PubMed

Noncoding RNAs have regulatory capabilities that evolution harnesses to fulfill diverse functions. Lee et al. show that a noncoding RNA from Epstein-Barr virus recruits a host transcription factor to silence virus gene expression and propose that it does this through base-pairing with nascent viral transcripts. PMID:25679756

Pompon, Julien; Garcia-Blanco, Mariano A

2015-02-12

399

Jack Olson, Assistant Director Planning/Asset Management Division  

E-print Network

- 400 Horizontal Well - 1150 Gravel Trucks, Transports, Scrapers, Motor Graders, Dozers, Blades, Bed,000 Shaker Tank/Pit 122,000 Derrick 159,000 Suction Tank 131,000 VFD House 130,100 Mud Pump (2) 164,000 Mud Pavements #12;Mud Pump - 164,000 Pounds Load Type Number of Loads per Well Steer Group #1 Group #2

Minnesota, University of

400

Graduate Council Meeting Agenda 310 Jack K. Williams Administration Building  

E-print Network

-Commerce: Auctions, Contracts and Exchanges 3. ANSC 606 Advancements in Beef Cattle Production 4. ANSC 628 Databases Plant Cell Culture in Genetic Improvement & Conservation 13. FLOR 691 Research 14. FLOR 693 Professional Quality 13. INFO 623 Groupware and Collaborative Technology 14. INFO 632 Business Operating Systems 15

401

DARPP-32, Jack of All Trades… Master of Which?  

PubMed Central

DARPP-32 (PPP1R1B) was discovered as a substrate of cAMP-dependent protein kinase (PKA) enriched in dopamine-innervated brain areas. It is one of three related, PKA-regulated inhibitors of protein phosphatase-1 (PP1). These inhibitors seem to have appeared in early vertebrate ancestors, possibly Gnathostomes. DARPP-32 has additional important biochemical properties including inhibition of PKA when phosphorylated by Cdk5 and regulation by casein kinases 1 and 2. It is highly enriched in specific neuronal populations, especially striatal medium-size spiny neurons. As PP1 inhibitor DARPP-32 amplifies and/or mediates many actions of PKA at the plasma membrane and in the cytoplasm, with a broad spectrum of potential targets and functions. DARPP-32 also undergoes a continuous and tightly regulated cytonuclear shuttling. This trafficking is controlled by phosphorylation of Ser-97, which is necessary for nuclear export. When phosphorylated on Thr-34 and dephosphorylated on Ser-97, DARPP-32 can inhibit PP1 in the nucleus and modulate signaling pathways involved in the regulation of chromatin response. Recent work with multiple transgenic and knockout mutant mice has allowed the dissection of DARPP-32 function in striato-nigral and striato-pallidal neurons. It is implicated in the action of therapeutic and abused psychoactive drugs, in prefrontal cortex function, and in sexual behavior. However, the contribution of DARPP-32 in human behavior remains poorly understood. Post-mortem studies in humans suggest possible alterations of DARPP-32 levels in schizophrenia and bipolar disorder. Genetic studies have revealed a polymorphism with possible association with psychological and psychopathological traits. In addition, a short isoform of DARPP-32, t-DARPP, plays a role in cancer, indicating additional signaling properties. Thus, DARPP-32 is a non-essential but tightly regulated signaling hub molecule which may improve the general performance of the neuronal circuits in which it is expressed. PMID:21927600

Yger, Marion; Girault, Jean-Antoine

2011-01-01

402

Graduate Council Meeting Agenda 310 Jack K. Williams Administration Building  

E-print Network

. INTA 676 International Politics of the Middle East (tabled in March 2013) q. INTA 687 Domestic. INTA 672 East Asian Security j. INTA 673 Chinese Domestic Politics in Transition k. INTA 674 US Foreign of the Middle East n. INTA 687 Domestic Intelligence Operations: Legalities, Policies, and Procedures #12

403

Graduate Council Meeting Agenda 310 Jack K. Williams Administration Building  

E-print Network

. INTA 676 International Politics of the Middle East (tabled in March 2013) q. INTA 687 Domestic Nuclear Terrorism Threat Assessment and Analysis l. INTA 672 East Asian Security (tabled in March 2013) m. INTA 673 Chinese Domestic Politics in Transition (tabled in March 2013) n. INTA 674 US Foreign Policy

404

Tutorial on Bayesian Networks Jack Breese & Daphne Koller  

E-print Network

dealership in Fairhaven, Mass 5 Teenage Bayes Microsoft Researchers Exchange Brainpower with Eighth-grader Teenager Designs Award- Winning Science Project .. For her science project, which she called "Dr. Sigmund model x Independence facts 15 Bayesian Networks CancerSmoking{ }heavylightnoS ,, { }malignantbenignnone

Koller, Daphne

405

Tutorial on Bayesian Networks Jack Breese & Daphne Koller  

E-print Network

dealership in Fairhaven, Mass #12; 3 5 Teenage Bayes Microsoft Researchers Exchange Brainpower with Eighth­grader Teenager Designs Award­ Winning Science Project .. For her science project, which she called "Dr. Sigmund independence u Naïve Bayes model u Independence facts #12; 8 15 Bayesian Networks Cancer Smoking { } heavy

Morgenstern, Leora

406

Tutorial on Bayesian Networks Jack Breese & Daphne Koller  

E-print Network

dealership in Fairhaven, Mass 5 Teenage Bayes Microsoft Researchers Exchange Brainpower with Eighth­grader Teenager Designs Award­ Winning Science Project .. For her science project, which she called "Dr. Sigmund facts 15 Bayesian Networks Cancer Smoking { } heavy light no S , , Î { } malignant benign none C , , Î P

Morgenstern, Leora

407

Tutorial on Bayesian Networks Jack Breese & Daphne Koller  

E-print Network

dealership in Fairhaven, Mass #12;3 5 Teenage Bayes Microsoft Researchers Exchange Brainpower with Eighth-grader Teenager Designs Award- Winning Science Project .. For her science project, which she called "Dr. Sigmund model x Independence facts #12;8 15 Bayesian Networks CancerSmoking{ }heavylightno

Koller, Daphne

408

EQUATIONS OF MOTION THEORY FOR ELECTRON AFFINITIES Jack SIMONS  

E-print Network

-sponsored summer school held in Seattle, Washington at which Professor Paldus and many other pioneers of many computing molecular electron affinities. Much of his life-long involvement in studying anions derives from electronic energy of the parent species. For example, EAs typically lie in the 0.01­10 eV range

Simons, Jack

409

A Tribute to Jack E. Cermak Ahsan Kareem  

E-print Network

sports apparel and arenas. Dr. Cermak has since served as a consultant and principal investigator at Colorado State in 1986 and in 1990 and was elected as an honorary member of the American Society of Civil Engineers. Chi Epsilon, the Civil Engineering Honor Society, also elected him as National Honor member

Kareem, Ahsan

410

Graduate Council Meeting Minutes 310 Jack K. Williams Administration Building  

E-print Network

Improvement & Conservation 13. FLOR 691 Research 14. FLOR 693 Professional Study 15. HORT 601 Nutrition 601 Vertebrate Systematics 31. WFSC 612 Conservation Biology 32. WFSC 615 Mariculture 33. WFSC 621

411

Graduate Council Meeting Minutes 310 Jack K. Williams Administration Building  

E-print Network

Study gg. EDCI 617 Early Childhood Mathematics hh. EPSY 604 Career Assessment and Placement Services ii. EPSY 637 Qualitative Methods and Analysis jj. INFO 631 Business Component Design and Development kk

412

Graduate Council Meeting Agenda 310 Jack K. Williams Administration Building  

E-print Network

. COSC 693 Professional Study gg. EDCI 617 Early Childhood Mathematics hh. EPSY 604 Career Assessment and Placement Services ii. EPSY 637 Qualitative Methods and Analysis jj. INFO 631 Business Component Design

413

PLANT SCIENCE: Hexokinase, Jack-of-All-Trades  

NSDL National Science Digital Library

Access to the article is free, however registration and sign-in are required. Certain enzymes have dual functions having both catalytic and signaling activities. To this group can now be added plant hexokinases, as Frommer and colleagues discuss in their Perspective. Elegant work with Arabidopsis mutants reveals that plant hexokinases not only phosphorylate glucose but also sense glucose levels and participate in the glucose signaling pathway.

Wolf B. Frommer (Universitat Tübingen; Department of Plant Physiology, Zentrum für Molekularbiologie der Pflanzen)

2003-04-11

414

Representing Knowledge of Large-Scale Space Benjamin Jack Kuipers  

E-print Network

ACKNOWLEDGEMENTS I would like to thank Marvin Minsky, my thesis advisor, for the inspiration, ideas, and advice he knowledge, and therefore exhibit exible, common-sense" behavior. Name and Title of Thesis Supervisor: Marvin Minsky, Donner Professor of Science in the Electrical Engineering and Computer Science Department. #12;ii

Kuipers, Benjamin

415

Book review In summary, Jack Cohen and Graham  

E-print Network

. Secondly, the parallels between developmental processes in the retina and elsewhere in the nervous system or rabbit sperm it can be a challenge to apply these ideas to your own research. However, this book really, it not restricted to only one species or system, but rather tries to incorporate information from multiple sources

Eglen, Stephen

416

Graduate Council Meeting Minutes 310 Jack K. Williams Administration Building  

E-print Network

. INTA 676 International Politics of the Middle East n. INTA 687 Domestic Intelligence Operations. INTA 648 Contemporary Civil Wars i. INTA 672 East Asian Security j. INTA 673 Chinese Domestic Politics in Transition k. INTA 674 US Foreign Policy in the Persian Gulf l. INTA 675 Religion and Politics in Iran m

417

Graduate Council Meeting Minutes 310 Jack K. Williams Administration Building  

E-print Network

of the Middle East (tabled in March 2013) q. INTA 687 Domestic Intelligence Operations: Legalities, Policies 672 East Asian Security (tabled in March 2013) m. INTA 673 Chinese Domestic Politics in Transition (tabled in March 2013) n. INTA 674 US Foreign Policy in the Persian Gulf (tabled in March 2013) o. INTA

418

Salad Sensations Turkey, Monterey Jack cheese* and spring mix  

E-print Network

or Chicken Salad Tuna or grilled chicken* salad (bell peppers, sweet pickle relish, light mayo), cherry bell peppers Bread Bowl Enjoy your favorite soup in a traditional bread bowl Roasted Red Pepper & Gouda (V) Velvety-rich bisque of pureed roasted red bell pepper, smoked and shredded Gouda, whole basil

Oklahoma, University of

419

Aharon Nkwodimmah: A Jack of All Trades (and Careers)  

ERIC Educational Resources Information Center

Meet 19-year-old barber, artist and soon-to-be college freshman Aharon Nkwodimmah. Nkwodimmah began honing his barbering skills at the age of 12 on his younger brother's head, without permission, of course: that didn't turn out well for either of them. But by the age of 15, Nkwodimmah was known for his "lines." And for that reason, there was…

Blandford, Ayoka

2012-01-01

420

INTERPOLATION ON SURFACES IN P3 JACK HUIZENGA  

E-print Network

. This material is based upon work supported under a National Science Foundation Graduate Research Fellowship. 1 is the curve eC, where C is the unique member of L S 1 (2). For all other m, this series is nonspecial. The remaining cases will require some specialization techniques that we will develop over the course of the rest

Huizenga, Jack

421

Graduate Council Meeting Agenda 310 Jack K. Williams Administration Building  

E-print Network

Professional Internship d. HIST 624 Readings in Race, Ethnicity, and Migration e. HIST 625 Research Seminar in Race, Ethnicity, and Migration f. HIST 639 Readings in Asian History g. HIST 640 Readings in Atlantic and Society b. HIST 646 Readings in War and Society c. NUEN 611 Radiation Detection and Measurement d. NUEN

422

Graduate Council Meeting Minutes 310 Jack K. Williams Administration Building  

E-print Network

in Race, Ethnicity, and Migration e. HIST 625 Research Seminar in Race, Ethnicity, and Migration f. HIST were approved by the Graduate Council: a. HIST 645 Research Seminar in War and Society b. HIST 646 Readings in War and Society c. NUEN 611 Radiation Detection and Measurement d. NUEN 612 Radiological Safety

423

Polyhedral Ionic Molecules Alexander I. Boldyrev and Jack Simons*  

E-print Network

, for example, in alkali halide tetramers, no other ionic polyhedral structures containing only atomic ions from ions, and we offer a simple electrostatic model for predicting which polyhedral ionic structures materials contain core structures that fit our predictions. I. Introduction Polyhedral compounds have long

Simons, Jack

424

Department Colloquium Speaker: Jack Kalbfleisch, University of Michigan  

E-print Network

: 2:30 p.m. Place: Jeffery 234 Title: Simulation of a Kidney Paired Donation Program Abstract: Kidney paired donation (KPD) programs provide an important platform for living incompatible donor/recipient pairs to exchange organs to achieve mutual benefit. We consider aspects of such a program and present

Offin, Dan

425

know. Like, for example, professor Jack Lockwood putting UNH on  

E-print Network

and a track record of space science missions for a university of this size and funding support is remarkable," says John Aber, UNH vice president for research and public service and JOHN MACRI, Space Science Center of space science research at UNH, and 20 years of interdisciplinary grant-funded research at EOS, it

426

Query Suggestion by Concept Instantiation Jack Wei Sun1  

E-print Network

of this query is to look for a specific instance of a hurricane that happened to a US state, e.g., Katrina.g. katrina isa hurricane) as well as the typicality of an instance belonging to a concept. For example of difficult queries which include abstract con- cepts, e.g., "hurricane in US state". The likely intention

Zhu, Kenny Q.

427

Professor Jugdutt (Jack) Singh Director Centre for Technology Infusion  

E-print Network

the environment .... Addressing multi-modal Transport Safety Transport Productivity Travel Reliability Health driver behaviour and other human factors Aust. Government Recommendations State Government (Dec 2008 Lismore 2006:Tipper truck/Freight train collision (est. cost upwards of $13.5 million) Ban Springs 2006

Illinois at Urbana-Champaign, University of

428

Original article Performance of young jack pine trees originating  

E-print Network

(Pinus banksiana Lamb.) trees, originating from seed orchard trees of two different branch angle traits their grow- ing space and the proportion of photosynthesizing biomass relative to respiring biomass were respire a été affectée négativement par la compétition. La concentration en azote des aiguilles, qui

Boyer, Edmond

429

DYNAMICS OF THE LUNAR SPIN AXIS Jack Wisdom  

E-print Network

with low obliquity, with prograde synchronous spin. The Moon evolved outward due to tidal friction the rate of tidal heating that results from the forced Cassini obliquity. At each epoch, the lunar orbit taken from the lunar tidal evolution model of Goldreich (1966). The picture that was developed

Wisdom, Jack

430

The Columbus Chapter's 28th Annual Jack Mehan Memorial  

E-print Network

of the Cyber crime squad. His case ex perience involves child pornography/exploitation, computer an overview on the cyber aspects of threats to security today. 10:15 am Coffee Break--Exhibit Review Engineer and Microsoft Certified Professional + Internet. In Ohio, Rob is the Coordinator for the Cyber

Davis, James W.

431

JACK SIMONS* Chemistry Department, University olUtah, Salt [ake  

E-print Network

'i~ItkT"" > Oand it is assurned that the resulting eigenvalues are independent of tOO [act (i.e::~t E "'oM o,2ni the coordinate rotation method (CRM) [6] to onlythe "active orbital" arising in electron-mol~le collisions a single orbital in aDY multi-electron Stater determinant; the antisymmetric nature of sueh determinants

Simons, Jack

432

Jack R. Anderson Jack R. Anderson has had an illustrious career as a music educator in Pennsylvania. Inhis 42  

E-print Network

. Inhis 42 years of teaching, he served the University of Pittsburgh as Director of Bands for 18 years and Assistant Director for 9 years. Prior to his work at the University, he held teaching positions in the Corry basketball tournaments and 3 women's NCAA tournaments. He also conducted the University of Pittsburgh

Sibille, Etienne

433

Discovery of potential anti-infectives against Staphylococcus aureus using a Caenorhabditis elegans infection model  

PubMed Central

Background The limited antibiotic options for effective control of methicillin-resistant Staphylococcus aureus infections has led to calls for new therapeutic approaches to combat this human pathogen. An alternative approach to control MRSA is through the use of anti-infective agents that selectively disrupt virulence-mediated pathways without affecting microbial cell viability or by modulating the host natural immune defenses to combat the pathogen. Methods We established a C. elegans – S. aureus liquid-based assay to screen for potential anti-infectives against S. aureus. The assay was utilized to screen 37 natural extracts and 29 synthetic compounds for the ability to extend the lifespan of infected nematodes. Disc diffusion and MIC microdilution tests were used to evaluate the anti-microbial properties of these natural extracts and synthetic compounds whilst in vivo bacterial CFU within the C. elegans gut were also enumerated. Results We screened a total of 37 natural extracts and 29 synthetic compounds for anti-infective properties. The screen successfully revealed 14 natural extracts from six plants (Nypa fruticans, Swietenia macrophylla, Curcuma longa, Eurycoma longifolia, Orthosiphon stamineus and Silybum eburneum) and one marine sample (Faunus ater) that improved the survival of S. aureus-infected worms by at least 2.8-fold as well as 14 synthetic compounds that prolonged the survival of S. aureus-infected nematodes by 4-fold or greater. An anti-microbial screen of all positive hits demonstrated that 8/28 hits had no effect on S. aureus growth. Of these 8 candidates, 5 of them also protected the worms from MRSA infection. We also noted that worms exposed to N. fruticans root and O. stamineus leaf extracts showed reduced intestinal colonization by live S. aureus. This suggests that these extracts could possibly activate host immunity to eliminate the bacteria or interfere with factor/s that prevents pathogen accumulation. Conclusion We have successfully demonstrated the utility of this liquid-based screen to identify anti-infective substances that prolong S. aureus-infected host survival without affecting bacterial cell viability. PMID:24393217

2014-01-01

434

BRIEF C.V. DR JOHN C.V. ("JACK") PEZZEY, as at 14 August 2014 http://people.anu.edu.au/jack.pezzey EDUCATION AND EMPLOYMENT  

E-print Network

of Bristol, U.K. 1987-89 Harkness Research Fellow in Economics, University of Colorado, U.S.A. 1985.K. 1979-84 Higher, then Senior Scientific Officer; Building Research Station, Watford, U.K., and Energy

Pezzey, Jack

435

Tree-based Trajectory Planning to Exploit Atmospheric Energy Jack W. Langelaan  

E-print Network

operations. Large aircraft such as the Global Hawk can remain on-station for 24 hours and can fly non which exploits vertical air motion is known as soaring. Large birds such as eagles, hawks and condors

Langelaan, Jack W.

436

21 CFR 133.153 - Monterey cheese and monterey jack cheese.  

Code of Federal Regulations, 2011 CFR

...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) FOOD FOR HUMAN CONSUMPTION CHEESES AND RELATED...animal, plant, or microbial origin. (3) Other optional ingredients...animal, plant, or microbial origin, used in curing or flavor...

2011-04-01

437

21 CFR 133.153 - Monterey cheese and monterey jack cheese.  

Code of Federal Regulations, 2010 CFR

...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) FOOD FOR HUMAN CONSUMPTION CHEESES AND RELATED...animal, plant, or microbial origin. (3) Other optional ingredients...animal, plant, or microbial origin, used in curing or flavor...

2010-04-01

438

Learning about Workplace Learning and Expertise from Jack: A Discourse Analytic Study  

ERIC Educational Resources Information Center

Purpose: The purpose of this paper is to highlight some methodological problems concerning the neglect of participants' voices by workplace ethnographers and neglect of the highly interactional and co-constructive nature of research interviewing. The study aims to use discourse analysis, to show the phenomena of workplace learning and expertise to…

Lee, Yew-Jin; Roth, Wolff-Michael

2006-01-01

439

Looking at DNA through the Electron Microscope: the Work of Jack Griffith  

PubMed Central

Electron Microscopic Visualization of the RecA Protein-mediated Pairing and Branch Migration Phases of DNA Strand Exchange (Register, J. C., 3rd, Christiansen, G., and Griffith, J. (1987) J. Biol. Chem. 262, 12812–12820) Formation of DNA Loop Replication Fork Generated by Bacteriophage T7 Replication Proteins (Park, K., Debyser, Z., Tabor, S., Richardson, C. C., and Griffith, J. (1998) J. Biol. Chem. 273, 5260–5270)

Kresge, Nicole; Simoni, Robert D.; Hill, Robert L.

2009-01-01

440

Temporal Variation of the Mating System in a Natural Population of Jack Pine  

PubMed Central

Mating system parameters of a northern conifer, Pinus banksiana Lamb., were estimated from allozyme polymorphisms. Seeds analyzed were obtained from serotinous cones of 30 individuals and represented four independent fertilizations in 1975, 1976, 1977 and 1978. Results indicated that a mixed mating system model, with a mean effective outcrossing rate of 88 ± 0.047%, described the mating system of this stand. However, there was an approximately linear increase in the apparent selfing rate from the oldest (1975) to the newest (1978) crop. Two hypotheses could account for these observations. First, there may have been changes in the mating system during the 4-yr period, but linearity of the differences observed in this study may have been due to chance. These changes were, however, independent of the variability of the observed pollen pool. This indicated that they were not a result of different proportions of outcrossed zygotes directly observed. Second, there could have been a more or less constant amount of selfing, followed by a differential loss of viability of selfed and outcrossed zygotes during the period of storage in the cones. Under this hypothesis, selfed zygotes are at a selective disadvantage relative to outcrossed zygotes. No differences in the mating system could be demonstrated among the three crown strata of this stand. There was significant interlocus heterogeneity in the filial generation genotypic distributions and in the estimated outcrossing rates, reflecting the complex nature of forces that can affect single-locus estimates. There was evidence of some additional inbreeding, possibly due to family structures in the stand; however, this was a minor component of the total inbreeding. PMID:17246256

Cheliak, W. M.; Dancik, B. P.; Morgan, K.; Yeh, F. C. H.; Strobeck, C.

1985-01-01

441

A medical economic fairy tale: Jack, the magic beans, Medicare and the US FDA.  

PubMed

The US Medicare programme, through its new Part D programme, now offers limited coverage for prescription medicines. The coverage is provided via a variety of drug plans and their respective formularies. The federal regulatory scheme generally requires that the formularies contain drugs representative of the various therapeutic classes. On the other hand, the federal government has generally refrained from making specific decisions that specific drug entities are the most cost effective and therefore must be included in the formularies. With the dawn of Medicare Part D in the US, the federal government will be increasingly involved in supporting the cost of medicines, and will need to confront this challenge in the face of tight overall economic constraints on the federal budget. Any spending on medications of questionable efficacy will inevitably compromise the ability to deliver more cost-effective healthcare measures. Laxity in the approval process for ineffective drugs may therefore result in lack of funds to support acquisition of more useful medicines for the elderly. PMID:16872229

Nusbaum, Neil J

2006-01-01

442

Jack the Giant Tamer: Poetry Writing in the Treatment of Paranoid Schizophrenia.  

ERIC Educational Resources Information Center

Provides a brief case report on the use of poetry writing in the treatment of a patient with a diagnosis of paranoid schizophrenia. Notes that, after 23 sessions in which the patient said nothing, the patient brought a poem for the therapist to read at the 24 session. (SR)

Silver, Constance

1993-01-01

443

Jack-of-all-trades master of all? Snake vertebrae have a generalist inner organization  

NASA Astrophysics Data System (ADS)

Snakes are a very speciose group of squamates that adapted to various habitats and ecological niches. Their ecological diversity is of particular interest and functional demands associated with their various styles of locomotion are expected to result in anatomical specializations. In order to explore the potential adaptation of snakes to their environment we here analyze variation in vertebral structure at the microanatomical level in species with different locomotor adaptations. Vertebrae, being a major element of the snake body, are expected to display adaptations to the physical constraints associated with the different locomotor modes and environments. Our results revealed a rather homogenous vertebral microanatomy in contrast to what has been observed for other squamates and amniotes more generally. We here suggest that the near-absence of microanatomical specializations in snake vertebrae might be correlated to their rather homogeneous overall morphology and reduced range of morphological diversity, as compared to lizards. Thus, snakes appear to retain a generalist inner morphology that allows them to move efficiently in different environments. Only a few ecologically highly specialized taxa appear to display some microanatomical specializations that remain to be studied in greater detail.

Houssaye, Alexandra; Boistel, Renaud; Böhme, Wolfgang; Herrel, Anthony

2013-11-01

444

Shipley Protocol: Last Mofified by Jack: 8/18/2012 5:54:00 PM  

E-print Network

surfaces are dry and clear of chemicals. Coating: 1. Remove chuck from spinner and line the spinner bucket with aluminum foil. a. The chuck is easily removed by pulling up. b. Get a piece of aluminum foil large enough on the walls. e. Make sure there is no foil going into the vacuum hole in the center. 2. Place appropriate

Zahn, Jeffrey

445

Inferring Selectional Preferences from Part-Of-Speech N-grams Hyeju Jang and Jack Mostow  

E-print Network

selectional preferences using part-of-speech (POS) N-grams. From a corpus labeled with grammatical this probability by combining both distributions, whether or not either word occurs in the labeled corpus. PONG for the arguments of a predicate, e.g., celebrate. Can you celebrate a birthday? Sure. Can you celebrate a pencil

Mostow, Jack

446

Students, Scientists, and Family Commemorate the Life and Diverse Works of Jack Eddy  

NASA Astrophysics Data System (ADS)

Eddy Cross-Disciplinary Symposium on Sun-Climate Research; Aspen, Colorado, 22-24 October 2010; In 1976, John Allen Eddy published a seminal article (see Science, 192(4245), 1189-1202) revealing a link between the Little Ice Age, which occurred during the sixteenth through nineteenth centuries, and a period of low sunspot activity, which Eddy called the “Maunder Minimum.” This work placed Sun-climate research on a firm scientific footing. Eddy passed away on 10 June 2009. Following Eddy's passions for education and cross-disciplinary research, a symposium was held to expose talented college students to the science and politics of Sun-climate research. Funding from NASA's Living With a Star Targeted Research and Technology program and from the High Altitude Observatory, Advanced Study Program, and Integrated Science Program of the National Center for Atmospheric Research (NCAR) supported keynote speakers and provided scholarships for 30 students (junior year to Ph.D.) from diverse disciplines. Eddy's wife, Barbara, led a session devoted to personal recollections. Spencer Weart (American Institute of Physics) gave an after-dinner tribute using recordings of Eddy from a 1999 interview.

Judge, Philip

2011-02-01

447

Bibliography Jack Adams. Learning movement sequences. Psychological Bulletin, 96(1):3--28,  

E-print Network

Agre and David Chapman. What are plans Pattie Maes, editor, Designing Autonomous Agents: Theory Theoretical Artificial Intelligence, 7(1):7--48, 1995. Anderson. Rules Mind. Lawrence Erlbaum Associates, Hillsdale, 1993. Anderson and Matessa. The rational analysis categorization ACT­R architecture. Oaksford

Bryson, Joanna J.

448

Auburn University > COSAM > Previous Page > Current Page Jack Brown's Remarks from the 2007 Honors  

E-print Network

of the state of Texas. It is a cliché to say that one's university education "has a big impact on one's life." In my case it was more like my university education created my life. My time in graduate school had department sponsored student exchange program in Chile and I had a job at one of the national laboratories. I

Brown, Jack B.

449

Transpacific Transcendence: The Buddhist Poetics of Jack Kerouac, Gary Snyder, and Philip Whalen  

E-print Network

and Han Shan found beauty in the most pedestrian of experiences. Much of the Buddhist poetry of Rexroth--and subsequently Snyder, Kerouac and Whalen--is infused with the succinct lines and classic images and symbols of Chinese poetry: Clouds (passing...--and we certainly see this taken to the extreme in Whalen--was how to, as David Hinton says, shift "between thematic concerns while combining discontinuous moods, tones, images, perspectives, etc. . . . Another strategy Tu Fu invented to increase...

Giles, Todd

2010-09-10

450

FGFs: Neurodevelopment’s Jack-of-all-Trades – How Do They Do it?  

PubMed Central

From neurulation to postnatal processes, the requirements for FGF signaling in many aspects of neural precursor cell biology have been well documented. However, identifying a requirement for FGFs in a particular neurogenic process provides only an initial and superficial understanding of what FGF signaling is doing. How FGFs specify cell types in one instance, yet promote cell survival, proliferation, migration, or differentiation in other instances remains largely unknown and is key to understanding how they function. This review describes what we have learned primarily from in vivo vertebrate studies about the roles of FGF signaling in neurulation, anterior–posterior patterning of the neural plate, brain patterning from local signaling centers, and finally neocortex development as an example of continued roles for FGFs within the same brain area. The potential explanations for the diverse functions of FGFs through differential interactions with cell intrinsic and extrinsic factors is then discussed with an emphasis on how little we know about the modulation of FGF signaling in vivo. A clearer picture of the mechanisms involved is nevertheless essential to understand the behavior of neural precursor cells and to potentially guide their fates for therapeutic purposes. PMID:22164131

Hébert, Jean M.

2011-01-01

451

Presentation 2.4: Forest biorefining and implications for future wood energy scenarios Jack N. Saddler  

E-print Network

DRY MILLING Steeping Milling Washing Starch Gluten Sep. Hydrolysis Fermentation Yeast Recycle Distillation Cleaning Milling Hydrolysis Fermentation Distillation Ethanol recovery Starch CORN Centrifuge Distillers Dried Grains (DDG) Syrup Distillers Wet Grains (DWG) Syrup, Sweetner CO2 Yeast CO2 Gluten Fibre

452

Donkey in Disguise: Jack Jennings and the Center on Education Policy  

ERIC Educational Resources Information Center

With the passage of the No Child Left Behind Act (NCLB), the proliferation of high school exit exams, the success of school choice initiatives, and a dozen other smaller if more bitter battles, education has become one of the hottest policy topics in Washington. That means there is a booming market for education experts, especially those who claim…

Forster, Greg

2006-01-01

453

Sox6, Jack of all trades: A versatile regulatory protein in vertebrate development  

PubMed Central

Approximately twenty thousand genes are encoded in our genome, one tenth of which are thought to be transcription factors. Considering the complexity and variety of cell types generated during development, many transcription factors likely play multiple roles. Uncovering the versatile roles of Sox6 in vertebrate development sheds some light on how an organism efficiently utilizes the limited resources of transcription factors. The structure of the Sox6 gene itself may dictate its functional versatility. First, Sox6 contains no known regulatory domains; instead, it utilizes various cofactors. Second, Sox6 has a long 3?-UTR that contains multiple microRNA targets, thus its protein level is duly adjusted by cell type-specific microRNAs. Just combining these two characteristics alone makes Sox6 extremely versatile. To date, Sox6 has been reported to regulate differentiation of tissues of mesoderm, ectoderm, and endoderm origins, making Sox6 a truly multifaceted transcription factor. PMID:21495113

2011-01-01

454

Stephen Jay Gould, Jack Sepkoski, and the ‘Quantitative Revolution’ in American Paleobiology  

Microsoft Academic Search

During the 1970s, a “revolution” in American paleobiology took place. It came about in part because a group of mostly young, ambitious paleontologists adapted many of the quantitative methodologies and techniques developed in fields including biology and ecology over the previous several decades to their own discipline. Stephen Jay Gould, who was then just beginning his career, joined others in

David Sepkoski

2005-01-01

455

Why does Jack, and not Jill, break his crown? Sex disparity in brain tumors  

PubMed Central

It is often reported that brain tumors occur more frequently in males, and that males suffer a worse outcome from brain tumors than females. If correct, these observations suggest that sex plays a fundamental role in brain tumor biology. The following review of the literature regarding primary and metastatic brain tumors, reveals that brain tumors do occur more frequently in males compared to females regardless of age, tumor histology, or region of the world. Sexually dimorphic mechanisms that might control tumor cell biology, as well as immune and brain microenvironmental responses to cancer, are explored as the basis for this sex disparity. Elucidating the mechanisms by which sex chromosomes and sex hormones impact on brain tumorigenesis and progression will advance our understanding of basic cancer biology and is likely to be essential for optimizing the care of brain tumor patients. PMID:22277186

2012-01-01

456

Invasiveness of Oenothera congeners alien to Europe: Jack of all trades, master of invasion?  

Microsoft Academic Search

The genus Oenothera includes a number of species alien to central Europe, which differ in their invasion success. The present study was designed to investigate how fecundity, growth rate of seedlings and competitive ability contribute to the invasion potential within this genus. The relative growth rate and response to interspecific competition from neighbouring vegetation were determined for 15 species. Relations

Vojtech Jaros

457

Favorite Demonstrations: Simple "Jack-in-the-Box" Demonstrations for Physical Science Courses.  

ERIC Educational Resources Information Center

The demonstrations presented in this article relate to everyday life, address interdisciplinary aspects, and have implications for the life sciences. Topics of the demonstrations are electricity calculations, astronomy, electrolysis of water, ester synthesis from butyric acid and pentanol, catalysis, and minerals. (PR)

Cole, Theodor C. H.

1993-01-01

458

Molecular systematics of the Jacks (Perciformes: Carangidae) based on mitochondrial cytochrome b sequences using  

E-print Network

such as the Rainbow runner and Pilotfish are pelagic, typically found in the open ocean. Smith-Vaniz (1984) recognized (Smith- Vaniz, 1984). Based on a shared specialization of the lateralis system on the snout and other, Rachycen- tridae, and Echeneidae (Johnson, 1984; Smith-Vaniz, 1984). Smith-Vaniz (1984) listed five

Hynes, Wayne L.

459

Nick Groom, Alright, Jack? Conflict and Cohesion in Britain, 2005-10 UCDscholarcast  

E-print Network

of Britain' was the inaugural Green Paper of Gordon Brown's government. It was prepared by Justice Minister (arguably the Labour Party hasn't had an English leader since James Callaghan), Brown nailed his colours of Britain' Green Paper says so in no

460

Adaptation of the LIGNUM model for simulations of growth and light response in Jack pine  

E-print Network

the use of a whole-tree growth model will lead to improved parameterization and construction of stand Department of Forest Ecology, University of Helsinki, P.O. Box 24, 00014 Helsinki, Finland d METLA, Vantaa for understanding tree growth and survival dynamics in natural and managed forests. # 2001 Elsevier Science B.V. All

Lechowicz, Martin J.

461

Robust Neuro-Control for A Micro Quadrotor Jack F. Shepherd III  

E-print Network

opposed to winged flight), while maintaing a simple mechanical construction (as op- posed to helicopters is developed in four parts around each of the variables, and then combined and trained further to increase::Learning Permission to make digital or hard copies of all or part of this work for personal or classroom use

Tumer, Kagan

462

Controls and Indicators 1 3.5 Audio jack line output (P1)  

E-print Network

-On switch Switch that toggles between External Interrupt 0 (Capacitive Touch Panel) and boot loader pin. 10. #12;22 Header pin (J95) Header connected to the capacitive touch panel's serial I2C data pin. 23

Liebling, Michael

463

Jack A Gilbert B.Sc. Ph.D. Argonne National Laboratory  

E-print Network

, Meyer F, Gilbert JA, Silver S. 2012. Draft Genome Sequence of Agrobacterium albertimagni Strain AOL15, Phung LT, Meyer F, Silver S, Gilbert JA. 2012. Draft Genome Sequence of Achromobacter piechaudii Strain Analysis of Soil Microbial Communities across Three Hexachlorocyclohexane Contamination Levels. PLoS ONE 7

Kemner, Ken

464

How-To-Do-It: The Protein a Cell Built (and the House Jack Built).  

ERIC Educational Resources Information Center

Reviews research on the use of analogies to teach difficult concepts to students in biology classes. Presents an analogy used in a class for liberal arts students in a community college setting to teach protein synthesis. (CW)

Biermann, Carol A.

1988-01-01

465

21 CFR 133.153 - Monterey cheese and monterey jack cheese.  

Code of Federal Regulations, 2014 CFR

...bacterial culture. One or more of the clotting enzymes specified in paragraph (b)(2) of...alone or in combination. (2) Clotting enzymes. Rennet and/or other clotting enzymes of animal, plant, or microbial origin....

2014-04-01

466

21 CFR 133.153 - Monterey cheese and monterey jack cheese.  

Code of Federal Regulations, 2012 CFR

...bacterial culture. One or more of the clotting enzymes specified in paragraph (b)(2) of...alone or in combination. (2) Clotting enzymes. Rennet and/or other clotting enzymes of animal, plant, or microbial origin....

2012-04-01

467

21 CFR 133.153 - Monterey cheese and monterey jack cheese.  

Code of Federal Regulations, 2013 CFR

...bacterial culture. One or more of the clotting enzymes specified in paragraph (b)(2) of...alone or in combination. (2) Clotting enzymes. Rennet and/or other clotting enzymes of animal, plant, or microbial origin....

2013-04-01

468

Allen Moore, Rob Page and Jack Werren, for making this workshop possible. The  

E-print Network

they `bleach' when the waters get too warm. The bleaching of corals through loss of pigmentation or symbiotic Reef Symposium, coral bleaching was the subject of a mini symposium, where, among other topics, the 1997­1998 coral-bleaching event and associated coral mortality, reported from over 50 countries

van Woesik, Robert

469

Jack Bian, Dr. Avi Friedman School of Architecture, Faculty of Engineering, McGill University  

E-print Network

water Auxillary heating Solar active panel Hot water to applicace THERMAL COMFORTBRIEF VISUAL COMFORT energy Heat pump 22.4 Solar collectors 11.1 Solar cells 29.1 Heating 15.0 kWh/m/year2 2008 2013 2018 2023 the balcony, are built by steel framing. 6.3% 3.8% 5.0% 3.8% 6.3% 6.3% South APPLICATIONS RATIONALE A list

Barthelat, Francois

470

Jacks and pompanos of the family Carangidae are represented by 33  

E-print Network

(Trachinotus carolinus) is a prime candidate for aquaculture and stock enhancement programs because of its high pom- pano exhibit a number of desirable characteristics for aquaculture (Wei- rich et al., 2006 salinity environments, and has been successfully cultured in tanks, ponds, cages, and offshore netpens

471

Hypnotic and non-hypnotic revivification with special reference to Jack London's “martin eden”  

Microsoft Academic Search

One of the problems in evaluating hypnotic behavior is the ov~(~rlap in what is often regarded as hypnotic, and what is genel'ally reg, arded as waking, activity. The greater the skepticism about hypnGsis, the more the emphasis on similarities to it in the waking state. This emphasis is espeeially evident in the claims of a few experimental psyehologists and is

JEROME M. SCIINECK

1968-01-01

472

it is an unbiased, universal detector," says Jack Newton, a product manager at Chenomx in  

E-print Network

for a project that would marry Fiehn's expertise in metabolomics and her interest in wine. "There are so many and then ran samples on a LECO Pegasus IV GC TOF MS system and analysed the spectra using the BinBase program

Cai, Long

473

p53 — a Jack of all trades but master of none  

Microsoft Academic Search

Cancers are rare because their evolution is actively restrained by a range of tumour suppressors. Of these p53 seems unusually crucial as either it or its attendant upstream or downstream pathways are inactivated in virtually all cancers. p53 is an evolutionarily ancient coordinator of metazoan stress responses. Its role in tumour suppression is likely to be a relatively recent adaptation,

Melissa R. Junttila; Gerard I. Evan

2009-01-01

474

Precambrian Research 135 (2004) 251279 Internal zoning and UThPb chemistry of Jack Hills detrital  

E-print Network

Geology, Curtin University of Technology, Kent Street, Bentley, WA 6102, Australia c Institute of Geology. Cavosiea,, Simon A. Wildeb, Dunyi Liuc, Paul W. Weiblend, John W. Valleya a Department of Geology, Chinese Academy of Geological Sciences, 26 Baiwanzhuang Road, Beijing 100037, PR China d Department

Carlson, Anders

475

by Roger L. Sheley and Jack Stivers, revised by Kim Goodwin*  

E-print Network

Figure 1. Land infested with whitetop. HoaryCress (Whitetop) #12;#12;3 G lobe-podded whitetop (Cardaria pubescens), lens-podded whitetop (C. chalapa) and heart-podded whitetop (C. draba) are three closely related. They also invade cropland, especially alfalfa. Origin,HistoryandDistribution Globe-podded whitetop is native

Maxwell, Bruce D.

476

Topological color codes on Union Jack lattices: a stable implementation of the whole Clifford group  

E-print Network

the SNF (Grant No. PP002- 114713). [1] H. G. Katzgraber, H. Bombin, and M. A. Martin-Delgado, Phys. Rev. Lett. 103, 090501 (2009). [2] M. Ohzeki, Phys. Rev. E 80, 011141 (2009). [3] A. Y. Kitaev, Ann. Phys. 303, 2 (2003). [4] H. Bombin and M. A...

Katzgraber, Helmut G.; Bombin, H.; Andrist, Ruben S.; Martin-Delgado, M. A.

2010-01-01

477

Preparation and Relaxation of Very Stable Glassy States of a Simulated Liquid Robert L. Jack,1  

E-print Network

long-lived metastable states. The model we study is the Lennard-Jones (LJ) mixture of Kob and Andersen 2011; published 27 December 2011) We prepare metastable glassy states in a model glass former made,13]. The relationships between long- lived metastable states and glassy behavior have been discussed extensively [3

Garrahan, Juan P.

478

Transformative Professional Development through the Eyes of Jack Mezirow and Thomas Guskey  

ERIC Educational Resources Information Center

The key to improving education is the classroom teacher. Students must have skillful, highly effective teachers who have consistent access to on going professional development. NCLB offers guidelines for effective professional development. States interpret these guidelines and add their own varied legislative requirements. The current result is an…

Stahl, Leslie D.

2012-01-01

479

Jacks of metal/metalloid chelation trade in plants—an overview  

PubMed Central

Varied environmental compartments including soils are being contaminated by a myriad toxic metal(loid)s (hereafter termed as “metal/s”) mainly through anthropogenic activities. These metals may contaminate food chain and bring irreparable consequences in human. Plant-based approach (phytoremediation) stands second to none among bioremediation technologies meant for sustainable cleanup of soils/sites with metal-contamination. In turn, the capacity of plants to tolerate potential consequences caused by the extracted/accumulated metals decides the effectiveness and success of phytoremediation system. Chelation is among the potential mechanisms that largely govern metal-tolerance in plant cells by maintaining low concentrations of free metals in cytoplasm. Metal-chelation can be performed by compounds of both thiol origin (such as GSH, glutathione; PCs, phytochelatins; MTs, metallothioneins) and non-thiol origin (such as histidine, nicotianamine, organic acids). This paper presents an appraisal of recent reports on both thiol and non-thiol compounds in an effort to shed light on the significance of these compounds in plant-metal tolerance, as well as to provide scientific clues for the advancement of metal-phytoextraction strategies.

Anjum, Naser A.; Hasanuzzaman, Mirza; Hossain, Mohammad A.; Thangavel, Palaniswamy; Roychoudhury, Aryadeep; Gill, Sarvajeet S.; Rodrigo, Miguel A. Merlos; Adam, Vojt?ch; Fujita, Masayuki; Kizek, Rene; Duarte, Armando C.; Pereira, Eduarda; Ahmad, Iqbal

2015-01-01

480

Representing Knowledge of LargeScale Space 1 Benjamin Jack Kuipers  

E-print Network

flexible, ``common­sense'' behavior. Name and Title of Thesis Supervisor: Marvin Minsky, Donner Professor like to thank Marvin Minsky, my thesis advisor, for the inspiration, ideas, and advice he provided

Kuipers, Benjamin

481

Coincident root loci and Jack and Macdonald polynomials for special values of the parameters  

E-print Network

Introduction In 1857 Arthur Cayley published a short paper [1] where he considered a problem (which he of general m corresponds to the natural strata in the discriminant also known as coincident root loci. Cayley), µ1+. . .+µk = n. Cayley suggested an approach to this problem based on the classical invariant

482

YOUNG OF THE ATLANTIC SAI~FISH, ISTIOPHORUS PLATYPTERUSI BY JACK W. GEHRINGER, FISHERY BIOLOGIST  

E-print Network

.h, pectoral and pelvic fin lengths, eye diameter, and 177 #12;pterotic and main preopercular spine lengths are as defined by Gehringer (1957). Trunk length is the dist.ance bet.ween the posteriormost. margin of the orbit

483

"Come on, Jack, tell us about yourself": the growth spurt of group psychotherapy.  

PubMed

Group psychotherapy evidenced a growth spurt in the decade of the 1930s and prior to World War II. Following upon the pioneering efforts of the psychoeducators (Pratt, Marsh, Lazell) and the writings of the early analysts (Freud, Adler, Dreikurs, Burrow), the next wave of practitioners and theorizers popularized and expounded the use of the group treatment modality in hospitals, clinics, and private practice. A review of the seminal ideas and efforts of Jacob Moreno, Louis Wender, Paul Schilder, Lauretta Bender, Alexander Wolf, and Samuel Slavson continues the historical overview begun earlier in this journal (Ettin, 1988). In a continuing effort to call up the wisdom of the past in the service of the work of the present, the emphasis in this paper will be on practical application. Representative quotes will be embedded in the text to capture the tenor of the times, and special attention will be given to (1) theoretical underpinnings such as the proposed advantages, curative variables, and therapy goals of a group treatment; (2) the basic logistics of practice, including optimum group size, composition, membership and exclusion criteria, and length, frequency, and structure of the meetings; and (3) technical considerations, such as the role of the therapist and the techniques, procedures, and processes of the ongoing group endeavor, as well as the interface between individual and group sessions. In conclusion, it will be argued that group psychotherapy matured just in time to respond to the pressing need for efficient mental treatment mandated by the coming of the Second World War. PMID:2643584

Ettin, M F

1989-01-01

484

Osmotolerance in the Cryptophyceae: jacks-of-all-trades in the Chroomonas Clade.  

PubMed

No detailed studies have been performed to date on osmotolerance in cryptophytes, although one species, Chroomonas africana, had previously been reported to grow in freshwater as well as seawater. This study focused on osmotolerance in Chroomonas. Growth at different osmolalities and parameters of contractile vacuole function were examined and compared across a high-resolution phylogeny. Two evolutionary lineages in the Chroomonas clade proved to be euryhaline. Ranges of osmotolerance depended not only on osmolality, but also on culture medium. All cryptophytes contained contractile vacuoles. In the euryhaline strain CCAP 978/08 contractile vacuoles could be observed even at an osmolality beyond that of seawater. In addition the cells accumulated floridoside, an osmoprotectant likely originating from the red algal carbohydrate metabolism of the complex rhodoplast. Further evidence for functional contractile vacuoles also in marine cryptophytes was provided by identification of contractile vacuole-specific genes in the genome of Guillardia theta. PMID:24568876

Hoef-Emden, Kerstin

2014-03-01

485

Name Jack F. Cully, Jr. Title Associate Professor, Assistant Unit Leader, Wildlife  

E-print Network

on keystone species, dominant species, and their communities. Pps 129-144. In: Ostfeld, Evener, and Keesing. In press. Keystone hosts: Prairie dogs affect occurrence patterns of disease vectors on small mammals

Kaufman, Glennis A.

486

76 FR 60900 - Jack A. Danton, D.O.; Decision and Order  

Federal Register 2010, 2011, 2012, 2013, 2014

...So, now that I've given you all the options which do you want?* * * Which medicine you want?'' Id. UC2 stated...that. Id. Respondent then told UC2 that he was out of oxycodone...notwithstanding that UC2 never represented at this...

2011-09-30

487

PASSIVE MUSCLE FORCE MAY PROPEL THE FINGER DURING TOUCH-TYPING Jack Tigh Dennerlein  

E-print Network

surgery of five carpal tunnel syndrome patients, a tendon-force transducer (Dennerlein, 1997) was mounted. Second, the tendon force data is from only one subject during a tapping, not a typing task. Third.05 Time (s) SubjectNumber Fingertip Impact Keycap contact Flexor ExtensorExtensor Downswing start time

Dennerlein, Jack

488

Charles Booth’s Policemen: Crime, Police and Community in Jack-the-Ripper’s London  

E-print Network

. Exploiting the vast archive that Charles Booth amassed for his leviathan social investigation to explore the social order of London¹s East End, Life and Labour of the People in London, this volume takes issue with this answer. The East End was notorious as a...

Bailey, Victor

2014-01-01

489

Principal Investigator: Jack W. Baker, Stanford University Student Investigator: Ting Lin, Stanford University  

E-print Network

a target spectral acceleration at period T1, Sa(T1)*, from probabilistic seismic hazard analysis (PSHA Spectrum (CMS) links seismic hazard information with ground motion selection for dynamic structural Hazard Mapping tools. Which M, R and GMPM to use? This CMS can be used as a target for ground motion

Baker, Jack W.

490

Are You Willing to Have Your Students Join Ralph, Jack, and Piggy?  

ERIC Educational Resources Information Center

High school teacher Cara M. Arver walks teachers through her experience of setting up a virtual world to augment students' reading of "Lord of the Flies." Students interact as additional characters, discuss and solve problems based on the circumstances of the story, and complete classroom assignments within a virtual environment.

Arver, Cara M.

2007-01-01

491

Odd Job Jack described: a universal design approach to described video  

Microsoft Academic Search

People who are blind or have low vision have only recently begun to enjoy greater access to television and video through a new technology, called descriptive video information (DVI). Two styles of DVI production for animated comedy content were compared. The first model used a conventional description style, and the second used a first person narrative style. In addition, the

Deborah I. Fels; John Patrick Udo; P. Ting; J. E. Diamond; J. I. Diamond

2006-01-01

492

Jack of all trades, master of some? On the role of phenotypic plasticity in plant invasions  

Microsoft Academic Search

Invasion biologists often suggest that phenotypic plasticity plays an important role in successful plant invasions. Assuming that plasticity enhances ecological niche breadth and therefore confers a fitness advantage, recent studies have posed two main hypotheses: (1) invasive species are more plastic than non-invasive or native ones; (2) populations in the introduced range of an invasive species have evolved greater plasticity

Christina L. Richards; Oliver Bossdorf; Norris Z. Muth; Jessica Gurevitch; M. Piglucci

2006-01-01

493

Jack-of-all-trades: phenotypic plasticity facilitates the invasion of an alien slug species.  

PubMed

Invasive alien species might benefit from phenotypic plasticity by being able to (i) maintain fitness in stressful environments ('robust'), (ii) increase fitness in favourable environments ('opportunistic'), or (iii) combine both abilities ('robust and opportunistic'). Here, we applied this framework, for the first time, to an animal, the invasive slug, Arion lusitanicus, and tested (i) whether it has a more adaptive phenotypic plasticity compared with a congeneric native slug, Arion fuscus, and (ii) whether it is robust, opportunistic or both. During one year, we exposed specimens of both species to a range of temperatures along an altitudinal gradient (700-2400 m a.s.l.) and to high and low food levels, and we compared the responsiveness of two fitness traits: survival and egg production. During summer, the invasive species had a more adaptive phenotypic plasticity, and at high temperatures and low food levels, it survived better and produced more eggs than A. fuscus, representing the robust phenotype. During winter, A. lusitanicus displayed a less adaptive phenotype than A. fuscus. We show that the framework developed for plants is also very useful for a better mechanistic understanding of animal invasions. Warmer summers and milder winters might lead to an expansion of this invasive species to higher altitudes and enhance its spread in the lowlands, supporting the concern that global climate change will increase biological invasions. PMID:23015630

Knop, Eva; Reusser, Nik

2012-11-22

494

The Burning Issue By Alyssa A. Lappen and Jack D. Lauber  

E-print Network

approximately 1.4 billion gallons of fuel oil yearly. The U.S. plants include SEMass in Rochester, Massachusetts the U.S. "replace more than 75 percent of our oil imports from the Middle East by 2025." To do that investment in "zero-emission coal-fired plants, revolutionary solar and wind technologies, and clean, safe

Columbia University

495

2007 MICHIGAN DRY BEAN TRIALS COUNTY & COOPERATOR: BAY-Jack Knochel Farm  

E-print Network

.5 3 ADM N252185 94-97 ADM 1818 3253 2128 4 3.5 1.5 LSD=446 LSD=407 LSD=564 LSD=199 LSD=217 LSD=241 CV 1652 1576 1760 BANDIT 97-99 ADM 1339 3242 1774 2 2 5 SHANIA 97-99 ADM 1229 3633 1790 2.5 2 4 LSD=384 LSD=322 LSD=598 LSD=310 LSD=261 LSD=198 CV=21.1% CV=13.1% CV=12.8% CV=10.7% CV=11.1% CV=7.7% SMALL RED

496

2008 MICHIGAN DRY BEAN TRIALS COUNTY & COOPERATOR: BAY-Jack Knochel Farm  

E-print Network

N3284 99-100 ADM 2480 2394 2584 1.5 ADM N3724 97-99 ADM 1977 2492 3069 2 LSD=613 LSD=332 LSD=798 LSD=265 LSD=344 LSD=372 CV=19.7% CV=11.4% CV=27.0% CV=7.4% CV=7.3% CV=9.1% #12;lodge rating NAVY COB 67-03 98-99 GEN 2208 2444 COB 214-99 97-99 GEN 2577 2418 B04587 95-98 MSU 2151 3282 2962 1.5 LSD

497

Liquidity of Corporate Bonds Jack Bao, Jun Pan and Jiang Wang  

E-print Network

of illiquidity and its implications on market efficiency. Several measures of illiquidity have been considered to liquidity-related bond characteristics. More importantly, we find a strong commonality in the time variation of bond illiquidity, which rises sharply during market crises and reaches an all-time high during

498

Liquidity of Corporate Bonds Jack Bao, Jun Pan and Jiang Wang  

E-print Network

of illiquidity and its implications on market efficiency. For this reason, we focus in this paper directly volatility. Aggregating our illiquidity measure across bonds, we find strong commonality in the time variation of bond illiquidity, which rises sharply during market crises and reaches an all-time high during

Gabrieli, John

499

TEACHING ALGEBRA CONCEPTS IN THE EARLY GRADES Jack Burrill, Michigan State University  

E-print Network

and mathematically. Generally algebra is taught as symbolic manipulation, equation solving and graphing algebraic decisions based on generalized number concepts. INTRODUCTION Algebra can be thought of as the manipulation bananas and on the other pan are two pineapples, and they are in balance. In a second picture the balance

Spagnolo, Filippo

500

Humanistic Influences in Mathematics Achievement: Department Heads' Perceptions of Beverly J. Ferrucci and Jack A. Carter  

E-print Network

. Singapore has closely-knit communities with high parental expectations in a culturally controlled this influence from a cultural perspective (Hannay, Erb, and Ross, 2001). Effective departments usually presented a profile or culture that was consistent with high performance on achievement measures (Harris, Jamison

Spagnolo, Filippo