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1

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.

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

2014-01-01

2

NF-?B Inhibitors from Eurycoma longifolia.  

PubMed

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

Tran, Thi Van Anh; Malainer, Clemens; Schwaiger, Stefan; Atanasov, Atanas G; Heiss, Elke H; Dirsch, Verena M; Stuppner, Hermann

2014-03-28

3

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.

2014-01-01

4

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.

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

2012-01-01

5

Bone Micro-CT Assessments in an Orchidectomised Rat Model Supplemented with Eurycoma longifolia  

PubMed Central

Recent studies suggested that Eurycoma longifolia, a herbal plant, may have the potential to treat osteoporosis in elderly male. This study aimed to determine the effects of Eurycoma longifolia supplementation on the trabecular bone microarchitecture of orchidectomised rats (androgen-deficient osteoporosis model). Forty-eight-aged (10–12 months old) Sprague Dawley rats were divided into six groups of sham-operated (SHAM), orchidectomised control (ORX), orchidectomised + 7?mg/rat testosterone enanthate (TEN) and orchidectomised + Eurycoma longifolia 30?mg/kg (EL30), orchidectomised + Eurycoma longifolia 60?mg/kg (EL60), orchidectomised + Eurycoma longifolia 90?mg/kg (EL90). Rats were euthanized following six weeks of treatment. The left femora were used to measure the trabecular bone microarchitecture using micro-CT. Orchidectomy significantly decreased connectivity density, trabecular bone volume, and trabecular number compared to the SHAM group. Testosterone replacement reversed all the orchidectomy-induced changes in the micro-CT parameters. EL at 30 and 60?mg/kg rat worsened the trabecular bone connectivity density and trabecular separation parameters of orchidectomised rats. EL at 90?mg/kg rat preserved the bone volume. High dose of EL (90?mg/kg) may have potential in preserving the bone microarchitecture of orchidectomised rats, but lower doses may further worsen the osteoporotic changes.

Ramli, Rosmaliza; Khamis, Mohd Fadhli; Shuid, Ahmad Nazrun

2012-01-01

6

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.

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

2014-01-01

7

Rapid detection of sildenafil analogue in Eurycoma longifolia products using a new two-tier procedure of the near infrared (NIR) spectra database.  

PubMed

A simple and cost-effective two-tier drug screening procedure comprises a 'dedicated' NIR spectral database of common medicines and a 'unified' database was developed to detect the sildenafil analogue in Eurycoma longifolia products. Diffuse reflectance spectra of ten commercial herbal products containing E. longifolia were obtained over the wavelength range of 1100-2500 nm. The spectral search of two products purchased via the internet against a dedicated database of reputable E. longifolia products have resulted in the similarity index of more than 0.1 which indicated significantly different spectra. Further searches against the unified database showed a close match to the spectra of drug containing sildenafil citrate suggesting the presence of a sildenafil analogue. This finding was supported by clustering of these spectra in the PCA score plot within 5% significance level. This approach has alleviated the use of reference product or standard active for direct comparison and has a potential to be used for adulterated food and drugs detection. PMID:24731345

Said, Mazlina Mohd; Gibbons, Simon; Moffat, Anthony C; Zloh, Mire

2014-09-01

8

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.

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

2014-01-01

9

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

10

Phytochemical study of Mentha longifolia of Morocco.  

PubMed

A phytochemical study of Moroccan Mentha longifolia was carried out. The essential oil showed unusual relevant amounts of piperitenone oxide and piperitone oxide, which constitute a new chemotype. From the non-volatile extract, five flavonoids were isolated, among which 5,7,4'-trihydroxy-6,2',3'-trimethoxyflavone (1) is reported for the first time. PMID:11429267

Ghoulami, S; Il Idrissi, A; Fkih-Tetouani, S

2001-06-01

11

Red Phosphorus Jack Grenade.  

National Technical Information Service (NTIS)

CDEE PORTON have produced a Red Phosphorus Jack Grenade for AFV local smoke protection, with the object of combining the rapid screening qualities of the No 80 White Phosphorus with the quicker loading and reduced fire hazard of the L5 and L7 Jack Grenade...

C. A. Robinson P. A. Nelson P. G. Bartholomew

1968-01-01

12

Jacks perform balancing act. [Offshore platform leveling jacks  

Microsoft Academic Search

Three jacket leveling systems are described in this article. These jacks are used to level and align offshore platforms in deep water and under adverse weather conditions. One of these jacks, the jacket jack, was used to successfully level 2 platforms located on the west coast in offshore wastes. The climbing jacks were recently used for leveling operations on the

R. M. Brem; D. E. Sculley

1981-01-01

13

Motorized support jack  

DOEpatents

A compact, vacuum compatible motorized jack for supporting heavy loads and adjusting their positions is provided. The motorized jack includes: (a) a housing having a base; (b) a first roller device that provides a first slidable surface and that is secured to the base; (c) a second roller device that provides a second slidable surface and that has an upper surface; (d) a wedge that is slidably positioned between the first roller device and the second roller device so that the wedge is in contact with the first slidable surface and the second slidable surface; (e) a motor; and (d) a drive mechanism that connects the motor and the wedge to cause the motor to controllably move the wedge forwards or backwards. Individual motorized jacks can support and lift of an object at an angle. Two or more motorized jacks can provide tip, tilt and vertical position adjustment capabilities.

Haney, Steven J. (Tracey, CA); Herron, Donald Joe (Manteca, CA)

2001-01-01

14

20. MANUAL JACKING STATION UNIT 23 GORGE POWERHOUSE. JACKING FOR ...  

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

20. MANUAL JACKING STATION UNIT 23 GORGE POWERHOUSE. JACKING FOR UNITS 23, 22, AND 21 HAS BEEN AUTOMATED FOR MANY YEARS BUT THE MANUAL JACKING STATIONS REMAIN IN PLACE AND FUNCTIONAL, 1989. - Skagit Power Development, Gorge Powerhouse, On Skagit River, 0.4 mile upstream from Newhalem, Newhalem, Whatcom County, WA

15

Thomas Jack Lee  

NASA Technical Reports Server (NTRS)

Thomas Jack Lee served as the sixth director of the Marshall Space Flight Center from July 6, 1989 to January 6, 1994. Prior to the appointment, Lee held positions as Center Deputy Director (1980 - 1989) and Spacelab Program Manager (1973 - 1980). Lee began his NASA career in July 1960 when he transferred to the newly formed MSFC from Redstone Arsenal's Army Ballistic Missile Agency.

1992-01-01

16

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.

Dankanich, Caitlin L.

2012-01-01

17

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.

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

18

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; ...

Anderson, Ms. S.

2008-09-10

19

Human immunodeficiency virus type 1 inhibitory activity of Mentha longifolia.  

PubMed

Extracts from a new chemotype of Mentha longifolia, a mint species that grows spontaneously and widely in the Moroccan mountains, were tested against human immunodeficiency virus type 1 (HIV-1). We observed that non-toxic concentrations (10 microg/mL) of extracts from this plant, in particular methanol (Ext-1) and ethyl acetate (Ext-3) extracts, significantly inhibit (p < 0.01) HIV-1BaL infection by about 40% and 55%, respectively. In addition, only Ext-3 shows significant (p < 0.008) inhibitory activity (50% inhibition) against HIV-1 reverse transcriptase. It is noteworthy that chemical analysis of these extracts suggests that flavonoids, mainly flavones of M. longifolia, may be the major inhibitors of HIV infection. In conclusion, these in vitro data suggest that components of M. longifolia may represent potential anti-HIV agents; the identification of such components is in progress. PMID:15058498

Amzazi, Saaïd; Ghoulami, Saaïd; Bakri, Youssef; Il Idrissi, Abdelkader; Fkih-Tétouani, Souad; Benjouad, Abdelaziz

2003-01-01

20

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.

21

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.

22

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

23

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.

24

Constituents of Essential Oils from Mentha longifolia Growing Wild in Greece.  

PubMed

The essential oils from 9 populations of MENTHA LONGIFOLIA (L.) L., ssp. LONGIFOLIA and ssp. PETIOLATA (Boiss.) Kokkini, growing wild in Greece, were investigated by means of GLC and GLC-MS. Piperitone oxide has been found as the main component in the essential oils of both subspecies while carvone only in some individuals of ssp. PETIOLATA (chemotype 2). PMID:17265207

Kokkini, S; Papageorgiou, V P

1988-02-01

25

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

26

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.

27

The chemistry, pharmacologic, and therapeutic applications of Polyalthia longifolia  

PubMed Central

Medicinal plants are nature's gift to human beings to lead a disease-free, healthy life. They play a vital role in preserving our health. India is one of the most medicoculturally diverse countries in the world, where the medicinal plant sector is part of a time-honored tradition that is respected even today. Medicinal plants are believed to be much safer and proved as elixir in the treatment of various ailments. In our country, more than 2000 medicinal plants are recognized. Polyalthia longifolia cv. pendula (Annonaceae) is native to the drier regions of India and is locally known as “Ashoka” and is commonly cultivated in Pakistan and Sri Lanka. This plant is used as an antipyretic agent in indigenous systems of medicine. Pharmacologic studies on the bark and leaves of this plant show effective antimicrobial activity, cytotoxic function, antiulcer activity, hypoglycemic activity, and hypotensive effect. The present article includes the detailed exploration of pharmacologic properties of P. longifolia in an attempt to provide a direction for further research.

Katkar, K. V.; Suthar, A. C.; Chauhan, V. S.

2010-01-01

28

Report: 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

29

Isolation of some luteolin derivatives from Mentha longifolia (L.) Hudson subsp. longifolia and determination of their genotoxic potencies.  

PubMed

This study was designed to evaluate the mutagenic and antimutagenic activities of luteolin derivatives (luteolin 7-O-glucoside, luteolin 7-O-rutinoside and luteolin 7-O-glucuronide) isolated from Mentha longifolia (L.) Huds. subsp. longifolia by using Ames Salmonella test (TA 1535 and TA1537 strains). In the antimutagenicity assays, luteolin 7-O-glucoside, luteolin 7-O-rutinoside and luteolin 7-O-glucuronide showed antimutagenic effects on TA1537 and TA1535 strains. The highest inhibition rates for luteolin 7-O-glucoside, luteolin 7-O-rutinoside and luteolin 7-O-glucuronide on TA1537 strain were 84.03%, 87.63% and 67.77%, respectively. Similarly, in the antimutagenicity assays performed with the TA1535 strain, the inhibition rates for luteolin 7-O-glucoside and luteolin 7-O-rutinoside were 23.86% and 23.76% respectively. Our findings showed that the antimutagenic properties of luteolin derivatives on TA1537 and TA1535 strains have been found to be structure dependent. The clarification of differences in antimutagenic potency of these luteolin derivatives based on their structures has been demonstrated in this study. PMID:22868156

Orhan, Furkan; Bar??, Özlem; Yanm??, Derya; Bal, Tu?ba; Güvenalp, Zuhal; Güllüce, Medine

2012-11-15

30

Isolation of a flavonoid, apigenin 7-O-glucoside, from Mentha longifolia (L.) Hudson subspecies longifolia and its genotoxic potency.  

PubMed

Mentha is a medicinal and aromatic plant belonging to the Lamiaceae family, which is widely used in food, flavor, cosmetic and pharmaceutical industries. Recently, it has been found that the use of Mentha as a pharmaceutical source is based on its phytochemical constituents that have far been identified as tannins, saponins, phenolic acids and flavonoids. This study was designed to evaluate the mutagenic and antimutagenic activities of apigenin 7-O-glucoside (A7G), a flavonoid isolated from Mentha longifolia (L.) Hudson subspecies longifolia (ML). The possible antimutagenic potential of A7G was examined against mutagens ethyl methanesulfonate and acridine in an eukaryotic cell system Saccharomyces cerevisiae and sodium azide in Salmonella typhimurium TA1535 and 9-aminoacridine in S. typhimurium TA1537. According to our findings, any concentrations of the A7G used did not show mutagenic activity but exerted strong antimutagenic activities at tested concentrations. The inhibition rates for the Ames test ranged from 27.2% (S. typhimurium TA1535: 0.4 ?M/plate) to 91.1% (S. typhimurium TA1537: 0.2 ?M/plate) and for the yeast deletion assay from 4% to 57.7%. This genotoxicological study suggests that a flavonoid from ML owing to antimutagenic properties is of great pharmacological importance and might be beneficial to industries producing food additives, cosmetics and pharmaceuticals products. PMID:23377117

Gulluce, Medine; Orhan, Furkan; Yanmis, Derya; Arasoglu, Tulin; Guvenalp, Zuhal; Demirezer, Lutfiye Omur

2013-02-13

31

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

32

Acacia longifolia invasion impacts vegetation structure and regeneration dynamics in open dunes and pine forests  

Microsoft Academic Search

Acacia spp. are among the most serious plant invaders worldwide, and Acacia longifolia specifically causes problems in Portugal. In this study, we evaluated the impacts of A. longifolia invasion on community structure, light climate, plant diversity and regeneration in pine forests and open stabilized dunes\\u000a in northern and southern Portugal. Having the growth form of a small tree or shrub, between 1

Katherine G. Rascher; André Große-Stoltenberg; Cristina Máguas; João Augusto Alves Meira-Neto; Christiane Werner

2011-01-01

33

Investigation of some biologic activities of Swertia longifolia Boiss  

PubMed Central

Swertia species are widespread in Eastern and Southern Asian countries and used in traditional medicine as anti-pyretic, analgesic, gastro and liver tonic. Among different species, only Swertia longifolia grows in Iran. In this investigation, antioxidant, cytotoxic and acetylcholinesterase inhibitory activities of S. longifolia have been studied. Aerial parts and roots of the plant were collected, dried and extracted with methanol 80% (total extract). Different extracts of the plant were obtained using hexane, chloroform, ethyl acetate, methanol, methanol:water (1:1) and water, respectively. Cytotoxic activity was determined by MTT assay on MDBK, HepG2, MCF7, HT29 and A549 cell lines. Antioxidant activity was measured by 2,2-diphenyl-1-picryl hydrazyl (DPPH) free radicals and acetylcholinesterase inhibitory (AChEI) effect was evaluated based on Ellman’s method in 96-well microplates.The results showed no cytotoxicity of the plant extracts on MDBK, HepG2, MCF7, HT29 and A549 cell lines up to 100 ?g/ml. All samples showed radical scavenging activity but methanol extract of aerial parts and ethyl acetate extract of the roots showed the highest effects.Total extract of the roots showed higher AChEI activity than the aerial parts. Among different extracts, chloroform and ethyl acetate extracts of the roots and chloroform and methanol:water extracts of the aerial parts were more potent in AChEI assay. It is concluded that aerial parts and roots of the plant are rich in antioxidant agents with no cytotoxicity on selected cell lines up to 100 ?g/ml. Moreover, since antioxidant and AChEI activity of compounds play an important role in the treatment of Alzheimer’s disorder, this plant might be a potential candidate for isolation of antioxidant and AChEI compounds which could be used as supportive treatment of Alzheimer’s disease.

Hajimehdipoor, H.; Esmaeili, S.; Shekarchi, M.; Emrarian, T.; Naghibi, F.

2013-01-01

34

Tropical Cyclone Jack in Satellite 3-D  

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). ...

35

Central Calorimeter Support Cradle Jack Failure Analysis  

SciTech Connect

The Central Calorimeter and its support cradle are to be supported by either hydraulic or mechanical jacks. If hydraulics are used, each support will use two hydraulically coupled jacks with two out of the four supports hydraulically coupled giving the effect of a three point support system. If mechanical jacks are used, all four points are used for support. Figure 2 shows two examples of jack placement on a 3.5 inch support plate. These two support scenarios lead to five jack failure cases to be studied. This report deals with the way in which a 0.25 inch drop (failed jack) at one support affects the stresses in the cradle. The stresses from each failure case were analyzed in two ways. First, stress factors, defined as quotients of stress intensities of the failed case with respect to the static case, were generated and then, hand calculations similar to those in Engineering Note 3740.215-EN-14 were done using the reaction forces from the failed case.

Rudland, D.L.; /Fermilab

1987-04-10

36

Three new clerodane diterpenes from Polyalthia longifolia var. pendula.  

PubMed

Three new clerodane diterpenes, (4?2)-abeo-cleroda-2,13E-dien-2,14-dioic acid (1), (4?2)-abeo-2,13-diformyl-cleroda-2,13E-dien-14-oic acid (2), and 16(R&S)- methoxycleroda-4(18),13-dien-15,16-olide (3), were isolated from the unripe fruit of Polyalthia longifolia var. pendula (Annonaceae) together with five known compounds (4-8). The structures of all isolates were determined by spectroscopic analysis. The anti-inflammatory activity of the isolates was evaluated by testing their inhibitory effect on NO production in LPS-stimulated RAW 264.7 macrophages. Among the isolated compounds, 16-hydroxycleroda-3,13-dien-15,16-olide (6) and 16-oxocleroda-3,13-dien-15-oic acid (7) showed promising NO inhibitory activity at 10 µg/mL, with 81.1% and 86.3%, inhibition, respectively. PMID:24531220

Wu, Tung-Ho; Cheng, Yung-Yi; Chen, Chao-Jung; Ng, Lean-Teik; Chou, Li-Chen; Huang, Li-Jiau; Chen, Yung-Husan; Kuo, Sheng-Chu; El-Shazly, Mohamed; Wu, Yang-Chang; Chang, Fang-Rong; Liaw, Chih-Chuang

2014-01-01

37

Determination of antimutagenic properties of apigenin-7-O-rutinoside, a flavonoid isolated from Mentha longifolia (L.) Huds. ssp. longifolia with yeast DEL assay.  

PubMed

Lamiaceae is an important plant family that has been investigated for its medicinal properties due to its large amounts of phenolic acids and flavonoids. Flavonoids have been shown to have antioxidant and antimutagenic activities in different test systems, but their certain mechanisms are still unclear. This study was designed to evaluate the mutagenic and antimutagenic activities of apigenin 7-O-rutinoside, a flavonoid isolated from Mentha longifolia (L.) Huds. ssp. longifolia. The possible antimutagenic potential of apigenin 7-O-rutinoside (A7R) was examined against mutagens ethyl methanesulfonate (EMS) and acridine (AC) in a eukaryotic cell system Saccharomyces cerevisiae RS112. The results showed that A7R has different inhibition rates against EMS and AC-induced mutagenicity. Thus, the properties of A7R are of great pharmacological importance and might be beneficial for reducing the risk of reactive oxygen species-related diseases. PMID:22491724

Gulluce, Medine; Orhan, Furkan; Adiguzel, Ahmet; Bal, Tugba; Guvenalp, Zuhal; Dermirezer, Lutfiye Omur

2013-07-01

38

Analgesic and anti-inflammatory activity of the aqueous extract of Rheedia longifolia Planch & Triana.  

PubMed

Rheedia longifolia Planch et Triana belongs to the Clusiaceae family. This plant is widely distributed in Brazil, but its chemical and pharmacological properties have not yet been studied. We report here that leaves aqueous extract of R. longifolia (LAE) shows analgesic and anti-inflammatory effects. Oral or intraperitoneal administration of this extract dose-dependently inhibited the abdominal constrictions induced by acetic acid in mice. The analgesic effect and the duration of action were similar to those observed with sodium diclofenac, a classical non-steroidal analgesic. In addition to the effect seen in the abdominal constriction model, LAE was also able to inhibit the hyperalgesia induced by lipopolysaccharide from gram-negative bacteria (LPS) in rats. We also found that R. longifolia LAE inhibited an inflammatory reaction induced by LPS in the pleural cavity of mice. Acute toxicity was evaluated in mice treated with the extract for seven days with 50 mg/kg/day. Neither death, nor alterations in weight, blood leukocyte counts or hematocrit were noted. Our results suggest that aqueous extract from R. longifolia leaves has analgesic and anti-inflammatory activity with minimal toxicity and are therefore endowed with a potential for pharmacological control of pain and inflammation. PMID:17294007

Frutuoso, Valber da Silva; Monteiro, Márcia Magalhães; Amendoeira, Fábio Coelho; Almeida, Andressa Luiza Figueiredo; do Nascimento, Diogo Dibo; Bérenger, Ana Luiza Rangel; Kaplan, Maria Auxiliadora Coelho; Figueiredo, Maria Raquel; Bozza, Patrícia T; Castro-Faria-Neto, Hugo C

2007-02-01

39

Assessment Of Polyalthia Longifolia Var. Pendula For Hypoglycemic And Antihyperglycemic Activity  

Microsoft Academic Search

The hypoglycemic and antihyperglycemic activity of various solvent extracts of Polyalthia longifolia var. pendula leaf extracts was evaluated in alloxan induced experimental diabetes in rats. Diabetes was induced using 180 mg\\/kg i.p. of alloxan consecutively two times at an interval of 24 h. The test drugs were administered for 7 days. On 8 th day various biochemical parameters like serum

Nair R; Shukla V; Chanda S

2007-01-01

40

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

41

Chemical composition and antimicrobial and antioxidant activities of Mentha (longifolia L. and viridis) essential oils.  

PubMed

The study was aimed to investigate essential oil chemical composition (gas chromatography/flame ionization detection [GC-FID] and gas chromatography/mass spectrometry [GC-MS]) and antioxidant (1,1-diphenyl-2-picrylhydrazyl free radical (DPPH) and 2,2'-azinobis-3-ethylbenzothiazoline-6-sulphonate [ABTS] assays) and antimicrobial (Gram-positive and Gram-negative bacteria, fungi, and yeast) activities of essential oils extracted from leaves of Mentha longifolia L. and Mentha viridis. GC-MS analysis revealed that M. longifolia was constituted by pulegone (54.41%) as a major component followed by isomenthone (12.02%), 1,8-cineole (7.41%), borneol (6.85%), and piperitenone oxide (3.19%). M. viridis was rich in carvone (50.47%), 1,8-cineole (9.14%), and limonene (4.87%). The antioxidant activity by ABTS assay showed IC(50) values of 476.3 +/- 11.7 and 195.1 +/- 4.2 mg/L for M. longifolia and M. viridis, respectively, the DPPH assays have resulted in a moderate IC(50) (>8000 mg/L and 3476.3 +/- 133 mg/L for M. longifolia and M. viridis, respectively). Antimicrobial activity showed that Listeria monocytogenes and Klebsiella pneumoniae bacteria were more inhibited by the 2 essential oils tested. Escherichia coli was least susceptible. A strong activity was also observed on fungi and yeasts. Carvone, thymol, and piperitone oxide have not been detected in Tunisian M. longifolia. Camphor is reported for the 1st time for M. viridis. Antioxidant and antibacterial activities were correlated to chemical composition. PMID:19895481

Mkaddem, Mounira; Bouajila, Jalloul; Ennajar, Monia; Lebrihi, Ahmed; Mathieu, Florence; Romdhane, Mehrez

2009-09-01

42

Jack and the skyhook: The beanstalk revisited  

NASA Astrophysics Data System (ADS)

The ''skyhook'' principle is discussed and applied to a uniform rope (Jack's beanstalk) hanging from a point in the sky. The time for a transverse disturbances to travel from one end of the rope to the other (and back) is calculated.

Gersten, Joel; Soodak, Harry; Tiersten, Martin

1981-02-01

43

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.

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

2011-01-01

44

Jack C. Greene 1921-2001  

SciTech Connect

Jack C. Greene was born on June 3rd, 1921 in Roundup, Montana and died on September 4, 2001 in his home in Oxnard, California. He was a charter member and Fellow of the Health Physics Society and spent his career in civil defense and radiological preparedness. He served as an advisor to the National Council on Radiation Protection and Measurements (NCRP).

Siebentritt, Jr., Carl R. (Retired); Cloutier, Roger J. (Retired); French, Jr., Clayton S. (Massachusetts, Univ Of); Stansbury, Paul S. (BATTELLE (PACIFIC NW LAB)); Strom, Daniel J. (BATTELLE (PACIFIC NW LAB))

2001-12-01

45

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

46

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

47

Loblolly Heroes: Jack Harris & Farris Ivie.  

ERIC Educational Resources Information Center

This journal issue, published by Texas high school students, features interviews with two Army veterans of World War II, Jack Harris who fought the Japanese in the Pacific, and Farris Ivie who fought the Germans in Europe. The publication recounts the war experiences of the two Texas natives in their own words through a series of one-on-one…

Downing, Cassie, Ed.; McGarity, Fiona, Ed.

2000-01-01

48

Spudcan Modelling for Jack-Up Dynamics.  

National Technical Information Service (NTIS)

The Delft University of Technology started a project together with several companies to establish better design rules for elevated jack-up platforms. One of the aspects of the project, being led by the Workgroup Offshore Technology, is to develop computer...

P. J. Spaargaren

1989-01-01

49

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

50

Light and gibberellin-A 3 interaction in the seedling growth of Asteracantha longifolia nees. and Ruellia tuberosa L  

Microsoft Academic Search

Summary InA. longifolia andR. tuberosa, the radicle growth was inhibited and that of hypocotyl promoted in blue and red lights when compared with the white one. A distinct increase in hypocotyl growth took place in red and blue radiations as an interaction of gibberellin-A3. Thus, this increase in hypocotyl growth in white light was distinct inA. longifolia for all the

D. D. Chawan; K. D. Sharma; D. N. Sen

1971-01-01

51

Astronaut Jack Lousma taking hot bath  

NASA Technical Reports Server (NTRS)

A closeup view of Astronaut Jack R. Lousma, Skylab 3 pilot, taking a hot bath in the crew quarters of the Orbital Workshop (OWS) of the Skylab space station cluster in Earth orbit. In deploying the shower facility, the shower curtain is pulled up from the floor and attached to the ceiling. The water comes through a push-button shower head attached to a flexible hose. Water is drawn off by a vacuum system.

1973-01-01

52

'Weightless' acrylic painting by Jack Kroehnke  

NASA Technical Reports Server (NTRS)

'Weightless' acrylic painting by Jack Kroehnke depicts STS-26 Discovery, Orbiter Vehicle (OV) 103, Mission Specialist (MS) David C. Hilmers participating in extravehicular activity (EVA) simulation in JSC Weightless Environment Training Facility (WETF) Bldg 29. In the payload bay (PLB) mockup, Hilmers, wearing extravehicular mobility unit (EMU), holds onto the mission-peculiar equipment support structure in foreground while SCUBA-equipped diver monitors activity overhead and camera operator records EVA procedures. Copyrighted art work for use by NASA.

1987-01-01

53

Clerodane diterpenes isolated from Polyalthia longifolia induce apoptosis in human leukemia HL-60 cells.  

PubMed

Polyalthia is a versatile genus of shrubs and trees found in tropic and sub-tropic regions. In this study, three clerodane diterpenes, kolavenic acid (1), polyalthialdoic acid (2), and 16?-hydroxy-cleroda-3,13(14)Z-dien-15,16-olide (3) isolated from Polyalthia longifolia leaves were evaluated for their apoptotic potential against human leukemia HL-60 cells. Compounds 2 and 3 inhibited cell proliferation with IC?? values of 21.8 and 13.7 ?M, respectively. Morphological changes and DNA fragmentation analysis indicated that these diterpenes induce apoptotic cell death in the HL-60 cells. Our results revealed the importance of P. longifolia as a chemopreventive medicinal plant. PMID:24088522

Sari, Dina Permata; Ninomiya, Masayuki; Efdi, Mai; Santoni, Adlis; Ibrahim, Sanusi; Tanaka, Kaori; Koketsu, Mamoru

2013-01-01

54

Longifoamide-A and B: Two new ceramides from Mentha longifolia (Lamiaceae).  

PubMed

Two new N-acylsphingosines (ceramides) named longifoamide A {6'-tetracosenamide, (6'-Z)-N-[2,3-dihydroxy-1-(hydroxymethyl)octadecyl]} and B {6'-tetracosenamide, (6'-Z)-N-[2,3,4-trihydroxy-1-(hydroxymethyl)octadecyl]} were isolated from a methanol extract of Mentha longifolia. Both ceramides were characterized with the aid of 1D and 2DNMR spectroscopic techniques and high resolution mass spectrometry. PMID:16854725

Shaiq Ali, Muhammad; Ahmed, Waqar; Saleem, Muhammad; Khan, Taous

2006-08-01

55

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

56

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

57

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

58

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 NORTHWEST (SIDE) ELEVATION - Franklin Park Zoo, Feline House, Seaver Street, Boston, Suffolk County, MA

59

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 SOUTHWEST (FRONT) AND NORTHWEST (SIDE) ELEVATION - Franklin Park Zoo, Feline House, Seaver Street, Boston, Suffolk County, MA

60

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

61

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 SOUTHEAST (SIDE) ELEVATION - Franklin Park Zoo, Feline House, Seaver Street, Boston, Suffolk County, MA

62

Mentha longifolia in vitro cultures as safe source of flavouring ingredients.  

PubMed

In vitro plantlets and callus of M. longifolia were established and their volatile constituents characterized by GC-MS analysis of their headspaces (HSs) and essential oils (EOs). Significant quali-quantitative differences were found in the aromatic fingerprints in comparison with the M. longifolia parent plants. In fact, limonene and carvone were the main constituents in the EOs of the mother plants, while the aroma of the in vitro plant material were especially enriched in oxygenated terpenes. In particular, huge amounts of piperitenone and piperitenone oxide (75 %) were found for in vitro plantlets, while trans-carvone oxide (19 %) and trans-piperitone epoxide (9 %) were found in callus EO. However, the established in vitro plant material showed lack of pulegone and menthofurane, thus preserving an important feature observed in the volatile fingerprint of the parent plants. In fact, because of their well-known toxicity significant amounts of pulegone and menthofurane may compromise the safety using of mint essential oil. Therefore the in vitro M. longifolia plantlets and callus may be regarded as a potential source of a safe flavouring agent. PMID:22175048

Bertoli, Alessandra; Leonardi, Michele; Krzyzanowska, Justine; Oleszek, Wieslaw; Pistelli, Luisa

2011-01-01

63

Antioxidant Activity and Hepatoprotective Potential of Polyalthia longifolia and Cassia spectabilis Leaves against Paracetamol-Induced Liver Injury  

PubMed Central

In the present study, in vitro antioxidant, free radical scavenging capacity, and hepatoprotective activity of methanol extracts from Polyalthia longifolia and Cassia spectabilis were evaluated using established in vitro models such as ferric-reducing antioxidant power (FRAP), 2,2-diphenyl-1-picryl-hydrazyl (DPPH•), hydroxyl radical (OH•), nitric oxide radical (NO•) scavenging, metal chelating, and antilipidperoxidation activities. Interestingly, all the extracts showed considerable in vitro antioxidant and free radical scavenging activities in a dose-dependent manner when compared to the standard antioxidant which verified the presence of strong antioxidant compound in leaf extracts tested. Phenolic and flavonoid content of these extracts is significantly correlated with antioxidant capacity. Since P. longifolia extract was exhibited better in vitro antioxidant activities, it was subjected for in vivo hepatoprotective activity in paracetamol-intoxicated mice. Therapy of P. longifolia showed the liver protective effect on biochemical and histopathological alterations. Moreover, histological studies also supported the biochemical finding, that is, the maximum improvement in the histoarchitecture of the liver. Results revealed that P. longifolia leaf extract could protect the liver against paracetamol-induced oxidative damage by possibly increasing the antioxidant protection mechanism in mice. Our findings indicated that P. longifolia and C. spectabilis have potential as good sources of natural antioxidant/antiaging compounds.

Jothy, Subramanion L.; Aziz, Azlan; Chen, Yeng; Sasidharan, Sreenivasan

2012-01-01

64

Jack-up leveling barge for shallow water rigs  

SciTech Connect

Generally, the only alternative to a shell pad is a shallow water jack-up or a submersible rig. And in some instances, it is impractical to tow these mobile rigs to the location because of the necessary dredging. A possible solution to this problem, devised by Chain Jacks, Inc., is a jack-up leveling barge that extends its legs and pads to the bottom in waters ranging to 35 ft deep, then ballasts down to a depth of 10 ft or so below the surface. The barge-mounted rigs move over the leveling barges, ballast down and start rigging up. At this point, the leveling barge de-ballasts to minimize the load on the legs and mats. Chain Jack says the concept will enable barge mounted rigs to drill in waters ranging from 25 to 35 ft, and the cost will be considerably less than that of jack-ups or submersibles.

Not Available

1982-07-01

65

Reptiles and Amphibians in Deep Canyons: The Big Jacks and Little Jacks Creek Drainages of Owyhee County, Idaho.  

National Technical Information Service (NTIS)

This study was designed primarily as a survey to determine presence of absence of reptiles and amphibians of the deep canyons of the Big Jacks and Little Jacks creek drainages, and to provide baseline data for future studies. Two methods of determining pr...

M. F. Gerber J. C. Munger A. Ames J. Stewart

1997-01-01

66

Ileal relaxation induced by Mentha longifolia (L.) leaf extract in rat.  

PubMed

The effect of Mentha longifolia (L.) leaf hydroalcoholic extract (MLE) was examined on rat ileal smooth muscle contractions. Last portion of ileum from male adult Wistar rat was mounted in an organ bath containing Tyrode solution. The tissue was contracted by carbachol (CCh, 10 microM), KCl (60 mM) and BaC12 (4 mM) and then MLE (0.0625-1 mg mL(-1)) was added to the bath cumulatively. The effect of MLE on KCl-induced contraction was examined after tissue incubation with propranolol (1 microM), naloxone (1 microM) and N omega-nitro-L-arginine methyl ester (L-NAME, 100 microM). The effect of MLE on CaCl2-induced ileal contraction in Ca(2+)-free with high potassium Tyrode solution was also evaluated. The role of potassium channels was examined by ileum incubation (5 mim) with tetraethylammonium (TEA, 1 mM). The results showed that KCl-, CCh and BaCl2-induced ileal contractions were inhibited (p < 0.001) by cumulative concentrations of MLE with the same potency. In addition, MLE (0.25-1 mg mL(-1)) inhibited (p < 0.01) ileal contractions induced by CaCl2 (0.45-2.7 mM) in a concentration-related manner. The antispasmodic effect of MLE was affected neither by propranolol, L-NAME nor by naloxone. The MLE concentration-response curve was shifted to the right (p < 0.05) by tissue incubation with TEA. From results it may be suggested that Mentha longifolia hydroalcoholic leaf extract induces its spasmolytic activity mainly through disturbance in calcium mobilization and partly by potassium channels activation. Present results show that Mentha longifolia leaf extract exerts relaxant effects on intestinal smooth muscle, consistent with the traditional use of the plant to treat gastrointestinal disorders such as diarrhea and colic. PMID:18819647

Naseri, Mohammad Kazem Gharib; Naseri, Zahra Gharib; Mohammadian, Maryam; Birgani, Marzie Omidi

2008-06-15

67

Toxicological evaluation of the essential oil from Mentha longifolia L. subsp. capensis leaves in rats.  

PubMed

The effects of the essential oil from the leaves of Mentha longifolia L. subsp. capensis on some biochemical parameters of Wistar rats were studied. The oil at 125, 250, 375, and 500 microL/kg of body weight reduced (P < .05) the red blood cells and lymphocytes with no definite pattern on the white blood cells and mean cell volume. The doses significantly increased the neutrophils, monocytes, large unstained cells, liver-body weight ratio, and serum concentrations of cholesterol, triglyceride, high-density lipoprotein-cholesterol, and inorganic phosphate but had no effect on the heart body weight ratio and serum low-density lipoprotein-cholesterol, Na(+), Ca(2+), Cl(-), K(+), creatinine, and uric acid. The oil at 500 microL/kg of body weight also increased the kidney-body weight ratio. In contrast, the oil reduced the serum urea and atherogenic index. The total and conjugated bilirubin, together with the total protein and albumin, in the serum increased only with oil at 125 microL/kg of body weight. The serum alkaline phosphatase activity also increased with no significant change in those of gamma-glutamyl transferase and alanine and aspartate aminotransferase. The results indicate dose- and parameter-specific effect of the essential oil. Although the essential oil from M. longifolia leaves may not predispose to atherosclerosis, it may increase the functional activity of the rat liver at the lowest dose investigated. Therefore, the essential oil from M. longifolia may not be completely "safe" at the doses investigated. PMID:19627219

Odeyemi, O O; Yakubu, M T; Masika, P J; Afolayan, A J

2009-06-01

68

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

69

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

70

Piperitone from Mentha longifolia var. chorodictya Rech F. reduces the nitrofurantoin resistance of strains of enterobacteriaceae.  

PubMed

The diluted essential oil of Mentha longifolia (L.) var. chlorodictya Rech F. foliage enhanced the bactericidal activity of nitrofurantoin decreasing the minimum inhibitory concentration (MIC) of nitrofurantoin for nitrofurantoin-resistant strains of Enterobacteriaceae. Thin-layer chromatography (TLC) analysis of the essential oil detected a fraction (R(f) = 0.35, UV lambda(max) of 232.5), which was the most effective in enhancement of nitrofurantoin activity. Using gas liquid chromatography and known standards, the active fraction was identified as piperitone. 1 microl of the piperitone fraction decreased the MIC of nitrofurantoin 3-20 fold for the different strains of Enterobacteriaceae tested. PMID:15597306

Shahverdi, A R; Rafii, F; Tavassoli, F; Bagheri, M; Attar, F; Ghahraman, A

2004-11-01

71

Jack D. Fellows: Congressional Science Fellow  

NASA Astrophysics Data System (ADS)

Jack D. Fellows has been selected as the 1983-84 AGU Congressional Science Fellow. Last week he began his 1-year stint on Capitol Hill as AGU's seventh Congressional Science Fellow.Fellows received his Ph.D. earlier this year from the civil engineering department at the University of Maryland, College Park. For his dissertation he developed a management system using regional geographic information for hydrologic models. His work applied remote sensing data to the decision-making processes of regional planning organizations concerned with hydrology and natural resource management. The Maryland National Capital Park and Planning Commission has integrated Fellows' work into their programs on water resource and environmental planning; his approach also is being used for forest and water resource planning near Freiburg, Baden-Wurtemberg, West Germany.

72

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.

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

2014-01-01

73

Chemical and morphological diversity in wild populations of Mentha longifolia in Israel.  

PubMed

Populations of Mentha longifolia, an endangered species in Israel, were tested for essential oil composition and conservational ability. In 2002-2003, 25 wild populations country-wide were tested, indicating population divergence into two chemotypes. Chemotype A was characterized by high levels of menthone and pulegone, and chemotype B by high levels of piperitenone oxide and piperitone oxide. Chemotype A was more abundant (22 of 25 populations) than chemotype B (11 of 25 populations). However, a chemotype/population interaction was not recorded (P?>?0.05). In spring 2003, seven of the 25 wild populations were resampled, propagated, and cultivated at the Newe Ya'ar campus. Then, in 2004, the propagated plants were tested for essential oil composition. The propagated plants maintained the essential oil composition as well as the chemotype-frequency distribution of the original wild population from which they were obtained. Since a chemotype/population interaction was not recorded, and the cultivated plants displayed the wild population essential oil composition, it can be concluded that i) the chemotype diversity is genetically based, and ii) the M. longifolia populations sampled can be horticulturally conserved. PMID:22422525

Segev, Daniel; Nitzan, Nadav; Chaimovitsh, David; Eshel, Amram; Dudai, Nativ

2012-03-01

74

11. View looking E with towards Brooklyn. Jack Boucher, photographer, ...  

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

11. View looking E with towards Brooklyn. Jack Boucher, photographer, 1978. - Brooklyn Bridge, Spanning East River between Park Row, Manhattan and Sands Street, Brooklyn, New York, New York County, NY

75

9. View looking S towards Brooklyn Heights. Jack Boucher, photographer, ...  

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

9. View looking S towards Brooklyn Heights. Jack Boucher, photographer, 1978. - Brooklyn Bridge, Spanning East River between Park Row, Manhattan and Sands Street, Brooklyn, New York, New York County, NY

76

2. EAST SIDE OF SLAVE QUARTERS (Jack E. Boucher, photgrapher, ...  

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

2. EAST SIDE OF SLAVE QUARTERS (Jack E. Boucher, photgrapher, April/May, 1986) - Felix & Odile Pratt Valle Slave Quarters, Southeast corner of Merchant & Second Streets, Sainte Genevieve, Ste. Genevieve County, MO

77

Pest Susceptibility Variation in Lake States Jack Pine Seed Sources.  

National Technical Information Service (NTIS)

Jack pine trees grown from seed collected in 26 natural stands throughout Minnesota, Wisconsin, and Michigan were evaluated in 11 test plantations in these three States. Pest incidence five and ten years after field planting was analyzed. There were signi...

J. P. King

1971-01-01

78

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

79

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

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

2. Historic American Buildings Survey Jack E. Boucher for CFA, 1970 STAIR DETAIL AT FIRST- SECOND- FLOOR LEVEL - Wilkins House, 1700 Massachusetts Avenue Northwest, Washington, District of Columbia, DC

80

Nutrient Accumulation in Planted Red and Jack Pine.  

National Technical Information Service (NTIS)

The purpose of this paper are to compare the nutrient accumulation in adjacent plantations of red and jack pine, and to develop models to predict nutrient content in these species as functions of easily measured stand variables.

D. H. Alban

1988-01-01

81

Jack Boucher in bucket of cherry picker photographing Train Shed. ...  

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

Jack Boucher in bucket of cherry picker photographing Train Shed. - Central of Georgia Railway, Passenger Station & Train Shed, Corner of Louisville (Railroad) Road & West Broad Street, Savannah, Chatham County, GA

82

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

83

Jack-Up Footing Penetration and Fixity Analyses  

Microsoft Academic Search

Footing-soil interaction analysis is carried out as part of the design of a three-leg jack up rig structure to be installed at the proximity of an oil platform in the North Sea. The purpose of the analysis is to deter- mine strength and stiffness capacities of the jack-up footings during installation (penetration) and opera- tion (fixity), respectively. The analysis is

L. Kellezi GEO; H. W. L. Hofstede; P. B. Hansen

84

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.

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

2013-01-01

85

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

PubMed

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; Hussain, Abdullah Ijaz; Chatha, Shahzad Ali Shahid; Naqvi, Syed Ali Raza; Bokhari, Tanveer Hussain

2013-01-01

86

Longifoside-A and -B: two new cerebrosides from Mentha longifolia (Lamiaceae).  

PubMed

Two new N-acyl-glycosphingosines (cerebrosides) named longifoside-A {6'-tetracosenamide, N-[3,4-dihydroxy-1-(hydroxymethyl)-2-(beta-D-glucopyranosyl) heptadecyl]-(6'E)} and B {6'-tetracosenamide, N-[3-hydroxy-1-(hydroxymethyl)-2-(beta-D-glucopyranosyl)-4Z-heptadecenyl]-(6'E)} have been obtained from the methanolic extract of Mentha longifolia belonging to the family Lamiaceae. Both the cerebrosides were purified as their acetate-derivatives: 6'-tetracosenamide, N-[3,4-diacetoxy-1-(acetoxymethyl)-2-(tetraacetoxy-beta-D-glucopyranosyl) heptadecyl]-(6'E) and 6'-tetracosenamide, N-[3-acetoxy-1-(acetoxymethyl)-2-(tetraacetoxy-beta-D-glucopyranosyl)-4Z-heptadecenyl]-(6'E). They were characterized with the aid of 1D and sophisticated 2D-NMR spectroscopic techniques. PMID:16753903

Shaiq Ali, Muhammad; Ahmed, Waqar; Saleem, Muhammad; Ashfaq Ali, Mohammad

2006-07-10

87

JACK - ANTHROPOMETRIC MODELING SYSTEM FOR SILICON GRAPHICS WORKSTATIONS  

NASA Technical Reports Server (NTRS)

JACK is an interactive graphics program developed at the University of Pennsylvania that displays and manipulates articulated geometric figures. JACK is typically used to observe how a human mannequin interacts with its environment and what effects body types will have upon the performance of a task in a simulated environment. Any environment can be created, and any number of mannequins can be placed anywhere in that environment. JACK includes facilities to construct limited geometric objects, position figures, perform a variety of analyses on the figures, describe the motion of the figures and specify lighting and surface property information for rendering high quality images. JACK is supplied with a variety of body types pre-defined and known to the system. There are both male and female bodies, ranging from the 5th to the 95th percentile, based on NASA Standard 3000. Each mannequin is fully articulated and reflects the joint limitations of a normal human. JACK is an editor for manipulating previously defined objects known as "Peabody" objects. Used to describe the figures as well as the internal data structure for representing them, Peabody is a language with a powerful and flexible mechanism for representing connectivity between objects, both the joints between individual segments within a figure and arbitrary connections between different figures. Peabody objects are generally comprised of several individual figures, each one a collection of segments. Each segment has a geometry represented by PSURF files that consist of polygons or curved surface patches. Although JACK does not have the capability to create new objects, objects may be created by other geometric modeling programs and then translated into the PSURF format. Environment files are a collection of figures and attributes that may be dynamically moved under the control of an animation file. The animation facilities allow the user to create a sequence of commands that duplicate the movements of a human figure in an environment. Integrated into JACK is a set of vision tools that allow predictions about visibility and legibility. The program is capable of displaying environment perspectives corresponding to what the mannequin would see while in the environment, indicating potential problems with occlusion and visibility. It is also possible to display view cones emanating from the figure's eyes, indicating field of view. Another feature projects the environment onto retina coordinates which gives clues regarding visual angles, acuity and occlusion by the biological blind spots. A retina editor makes it possible to draw onto the retina and project that into 3-dimensional space. Another facility, Reach, causes the mannequin to move a specific portion of its anatomy to a chosen point in space. The Reach facility helps in analyzing problems associated with operator size and other constraints. The 17-segment torso makes it possible to set a figure into realistic postures, simulating human postures closely. The JACK application software is written in C-language for Silicon Graphics workstations running IRIX versions 4.0.5 or higher and is available only in executable form. Since JACK is a copyrighted program (copyright 1991 University of Pennsylvania), this executable may not be redistributed. The recommended minimum hardware configuration for running the executable includes a floating-point accelerator, an 8-megabyte program memory, a high resolution (1280 x 1024) graphics card, and at least 50Mb of free disk space. JACK's data files take up millions of bytes of storage space, so additional disk space is highly recommended. The standard distribution medium for JACK is a .25 inch streaming magnetic IRIX tape cartridge in UNIX tar format. JACK was originally developed in 1988. Jack v4.8 was released for distribution through COSMIC in 1993.

Smith, B.

1994-01-01

88

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.

Al-Bayati, Firas A

2009-01-01

89

A chlorinated monoterpene ketone, acylated beta-sitosterol glycosides and a flavanone glycoside from Mentha longifolia (Lamiaceae).  

PubMed

Mentha longifolia (Lamiaceae), an aromatic herb yielded a new halogenated chloro-derivative of menthone (longifone), two new derivatives of beta-sitosterol glycoside (longiside-A and -B) and a new flavanone-glycoside (longitin). The beta-sitosterol and flavanone glycosides were purified as their acetate derivatives. Structures of all the isolated constituents were elucidated with the aid of HMBC techniques. However, the structure of longifone was also determined through X-ray crystallography. PMID:11937172

Shaiq Ali, Muhammad; Saleem, Muhammad; Ahmad, Waqar; Parvez, Masood; Yamdagni, Raghav

2002-04-01

90

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.

2014-01-01

91

Discovery of a new class of HMG-CoA reductase inhibitor from Polyalthia longifolia as potential lipid lowering agent.  

PubMed

Bioassay guided fractionation of the ethanolic extract of Polyalthia longifolia var. pendula, led to the discovery of the clerodane diterpene, 16?-hydroxycleroda-3, 13 (14) Z-dien-15, 16-olide (1), as a new structural class of HMG-CoA reductase inhibitor. Importantly, the in vivo effects of 1 corroborated well with its molecular docking analysis and also with its hamster plasma pharmacokinetics. PMID:21872367

Sashidhara, Koneni V; Singh, Suriya P; Srivastava, Anuj; Puri, Anju; Chhonker, Yashpal S; Bhatta, Rabi S; Shah, Priyanka; Siddiqi, Mohammad Imran

2011-10-01

92

Assessment of anti-inflammatory and hepatoprotective potency of Polyalthia longifolia var. pendula leaf in Wistar albino rats  

Microsoft Academic Search

The objective of the present study was to screen various solvent extracts of Polyalthia longifolia var. pendula (Annonaceae) leaf for anti-inflammatory activity and to evaluate the anti-inflammatory and hepatoprotective\\u000a potency of the potent solvent extract. Successive extraction was performed with six different solvents, viz. petroleum ether,\\u000a hexane, toluene, chloroform, acetone and methanol. Toluene, chloroform, acetone and methanol were used in

A. Tanna; R. Nair; S. Chanda

2009-01-01

93

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.

2012-01-01

94

Effect of eurycomanone on cytochrome P450 isoforms CYP1A2, CYP2A6, CYP2C8, CYP2C9, CYP2C19, CYP2E1 and CYP3A4 in vitro.  

PubMed

Eurycomanone, an active constituent isolated from Eurycoma longifolia Jack, was examined for modulatory effects on cytochrome P450 (CYP) isoforms CYP1A2, CYP2A6, CYP2C8, CYP2C9, CYP2C19, CYP2E1 and CYP3A4 using in vitro assays. The IC50 value was determined to assess the potencies of modulation for each CYP isoform. Our results indicated that eurycomanone did not potently inhibit any of the CYP isoforms investigated, with IC50 values greater than 250 ?g/ml. Hence there appears to be little likelihood of drug-herb interaction between eurycomanone or herbal products with high content of this compound and CYP drug substrates via CYP inhibition. PMID:23881640

Pan, Yan; Tiong, Kai Hung; Abd-Rashid, Badrul Amini; Ismail, Zakiah; Ismail, Rusli; Mak, Joon Wah; Ong, Chin Eng

2014-04-01

95

Insulin Accelerates Seedling Growth of Canavalia ensiformis (Jack bean)  

Microsoft Academic Search

Insulin is a 6 kDa peptide hormone that activates several metabolic processes and cellular growth. Germination studies showed that insulin, vanadyl sulphate (an insulin mimetic compound), tyrphostin (an inhibitor of insulin receptor kinase activity), pinitol (a chiro inositol analogue) and glucose were able to accelerate Canavalia ensiformis (Jack bean) seedling radicle and epicotyl development. Immunofluorescence microscopy analysis showed that proteins

Antônia E. A. Oliveira; Elane S. Ribeiro; Maura da Cunha; Valdirene M. Gomes; Kátia V. S. Fernandes; José Xavier-Filho

2004-01-01

96

8. Historic American Buildings Survey, Jack E. Boucher, from Walling's ...  

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

8. Historic American Buildings Survey, Jack E. Boucher, from Walling's Map of Providence County, R.I., in the collection of the Library of Congress, PHOTOCOPY OF 1851 WOODCUT OF THE WOONSOCKET COMPANY'S MILLS. - Woonsocket Company, Number 1 Mill, 100 Front Street, Woonsocket, Providence County, RI

97

Astronaut Jack Lousma with part of Inflight Medical Support System  

NASA Technical Reports Server (NTRS)

Astronaut Jack R. Lousma, Skylab 3 pilot, reaches into a medical kit, part of the Inflight Medical Support System (IMSS), during training for the second manned Skylab Earth-orbital mission. This activity took place in the Orbital Workshop (OWS) trainer in the Mission Simulation and Training Facility at JSC.

1973-01-01

98

Land Rover uses Jack and Robcad to perfect production processes  

Microsoft Academic Search

Reviews the use of simulation tools for process design at Land Rover. Outlines new applications of Jack and Robcad tools to the development of the Freelander production process. Describes how simulation reduces time-to-insight. Explains the potential for virtual reality tools in process development.

Anna Kochan

1998-01-01

99

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

100

Pentagon After Action Reports: The Jack Taylor Debate.  

ERIC Educational Resources Information Center

In requesting after action reports--Pentagon-prepared summaries of interviews between reporters and Pentagon officials--investigative reporter Jack Taylor both aroused Pentagon opposition and created a rift between the Pentagon press corps and outside reporters. To investigate whether the full-time Pentagon press corps was reporting as…

Abbott, Stan

101

Properties of Jack bean ?-mannosidase in the presence of hyaluronan.  

PubMed

An enzymatic reaction within a mesh-like structure constructed using hyaluronan was investigated in order to understand the influence of specific reaction environments in a living body on the reaction. This mesh-like structure, which mimicked extracellular matrix conditions, was found to accelerate glycohydrolysis by Jack bean ?-mannosidase. PMID:22484962

Nakamura, Mayumi; Adachi, Yuka; Totani, Kiichiro

2012-01-01

102

Load Capacity, Failure Mode and Design Criteria Investigation of Sand Jacks: Full Scale Load Testing of Sand Jacks.  

National Technical Information Service (NTIS)

A sand-jack is a sand filled container used as a component of cast-in-place bridge false-work. The sand filler facilitates the removal of the false-work by allowing slow and controlled lowering of the bracing that has become wedged beneath the new bridge ...

P. T. Sanders S. A. Ashford

2008-01-01

103

[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

104

Failure of the Polymerase Chain Reaction (PCR) Method to Detect Striped Jack Nervous Necrosis Virus (SJNNV) in Striped Jack Pseudocaranx dentex Selected as Spawners  

Microsoft Academic Search

The causative agent of viral nervous necrosis (VNN) in striped jack Pseudocaranx dentex is transmitted from female and male spawners to larvae, and elimination of carrier spawners, determined by the detection of striped jack nervous necrosis virus (SJNNV) via polymerase chain reaction (PCR), has been used to prevent transmission of the disease in larval production facilities. However, some outbreaks of

Toyohiko Nishizawa; Kiyokuni Muroga; Misao Arimoto

1996-01-01

105

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

106

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.

Jyothi, K. S.; Seshagiri, M.

2012-01-01

107

Jack Rabbit Pretest Shadowplate Drawings For TATB IHE Model Development  

Microsoft Academic Search

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

M M Hart; D W McDaniel

2009-01-01

108

Jack deformations of Plancherel measures and traceless Gaussian random matrices  

Microsoft Academic Search

We study random partitions $\\\\lambda=(\\\\lambda_1,\\\\lambda_2,...,\\\\lambda_d)$ of $n$ whose length is not bigger than a fixed number $d$. Suppose a random partition $\\\\lambda$ is distributed according to the Jack measure, which is a deformation of the Plancherel measure with a positive parameter $\\\\alpha>0$. We prove that for all $\\\\alpha>0$, in the limit as $n \\\\to \\\\infty$, the joint distribution of scaled

Sho Matsumoto

2008-01-01

109

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

110

Formulation and validation of a theoretical model for jack-up foundation load-displacement assessment  

Microsoft Academic Search

In current jack-up assessment practice spudcan foundations are usually modelled as pinned or spring supports of a flexible jack-up structure. The simplest approach—consistent with step 2b of the SNAME practice for jack-up assessment—is to select linear vertical and horizontal springs and a non-linear rotational spring stiffness consistent with acceptable foundation reactions. However, as this model does not capture spudcan sliding

H. van Langen; P. C. Wong; E. T. R. Dean

1999-01-01

111

Jack-up and jacket platforms: a comparison of system strength and reliability  

Microsoft Academic Search

This paper describes a comparitive study on the structural reliability of a sample jacket and a sample jack-up. The methodology adopted is outlined and results obtained presented with emphasis on the jack-up. Findings of relevance to the jack-up community are discussed and some comments on the SNAME RP are given. An approach for improved spudcan–soil interaction modelling to be used

A. C. Morandi; P. A. Frieze; M. Birkinshaw; D. Smith; A. Dixon

1999-01-01

112

Measurements of seabed fixity and dynamic behaviour of the Santa Fe Magellan jack-up  

Microsoft Academic Search

Including spudcan fixity in a jack-up site assessment enhances the performance of the rig with respect to standard acceptance criteria, and hence expands the operating envelope of the unit. Monitoring of the Magellan harsh environment jack-up unit over the 1998–1999 winter season in North Sea has added to the data on the degree of spudcan fixity experienced by jack-up units

K. Nelson; R. W. P. Stonor; T. Versavel

2001-01-01

113

Cytotoxic activity of methanolic extract of Mentha longifolia and Ocimum basilicum against human breast cancer.  

PubMed

Labiatae family is represented in Saudi Arabia. The aim of the present study was to go insight to investigate the anticancer activity and antioxidative potentials of methanolic extracts of Mentha longifolia L. (ML) and Ocimum basilicum L. (OB) that grown in Madina province, western region, Saudi Arabia. OB exhibited the greater phenolic contents as mg gallic acid equivalent/g weight (mg GAE/g) for a value of 105 +/- 5.5 mg GAE/g. On the other hand, ML produced 29 +/- 3.12 mg GAE/g. The standard antioxidant vitamin E used in this experiment elicited a value of total phenolic contents equal 22 +/- 2.2 mg GAE/g. The percentage scavenging activity of against diphenylpicrylhydrazyl (DPPH) was 850 and 160% for OB and ML extracts, respectively. Vitamin E elicited% scavenging activity of against DPPH equal to 198%. Brine shrimp cytotoxic assay clearly indicated the cytotoxic effects of either ML or OB extract. The brine shrimp survival is inversely proportional to the concentration of either ML or OB extract used with LD50 191.23 and 235.50 ppm, respectively. Toxic effects on brine shrimps indicated the anticancer potential of ML or OB extract. The ML or OB extract was unable to produce pbluescript (pBS) plasmid DNA damage, while the plasmid DNA treated with EcoRI produced a single band as a result of DNA damage. Also, both ML and OB extract exhibited marked cytotoxic activity against MCF-7 cells at various concentrations (20, 40, 80, 160 and 320 microg mL(-1)). The 160 and 320 microg mL(-1) showed more cytotoxic effect against MCF-7 cells. Based on results achieved, we can concluded that, OB and ML extracts have the potency to act as powerful antioxidants and protect against DNA damage and have cytotoxic activity against MCF-7 cell line. PMID:24506042

Al-Ali, Khalil H; El-Beshbishy, Hesham A; El-Badry, Ayman A; Alkhalaf, Moussa

2013-12-01

114

Determination of polyphenols in Mentha longifolia and M. piperita field-grown and in vitro plant samples using UPLC-TQ-MS.  

PubMed

Nine polyphenols in the aerial parts of Mentha longifolia have been separated by chromatographic techniques. Their structures have been confirmed by HPLC/electrospray ionization-MS/MS. The compounds identified included rosmarinic acid, salvianolic acid L, dedihydro-salvianolic acid, luteolin-glucuronide, luteolin-diglucuronide, luteolin-glucopyranosyl-rhamnopyranoside, and eriodictyol-glucopyranosyl-rhamnopyranoside. The extracts of M. longifolia and M. piperita field plants, in vitro plants, callus tissues, and cell suspension cultures were profiled, and their polyphenol composition was compared in different tissues and quantified using ultra-performance column liquid chromatography (UPLC)/triple-quadrupole-MS in the selected-ion recording detection mode. Determination of desired compounds was based on calibration curves obtained for standards, which were previously isolated from M. longifolia aerial parts. The UPLC profiles revealed considerable differences in the synthesis of secondary metabolites among samples coming from field plants, in vitro plants, callus tissues, and cell suspension cultures. Plant tissues coming from field cultivation (for both M. piperita and M. longifolia) contained several phenolic compounds (flavonoids and phenolic acids), whereas plants from in vitro conditions, callus tissues, and suspension cultures contained only a few of them. Rosmarinic acid dominated in all of these samples. These results show that under in vitro conditions, the metabolism of phenolics undergoes a fundamental change. PMID:21391480

Krzyzanowska, Justyna; Janda, Bogdan; Pecio, Lukasz; Stochmal, Anna; Oleszek, Wieslaw; Czubacka, Anna; Przybys, Marcin; Doroszewska, Teresa

2011-01-01

115

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

116

The influence of musical cadence into aquatic jumping jacks kinematics.  

PubMed

The aim of this study was to analyze the relationships between the head-out aquatic exercise "Jumping jacks" kinematics and the musical cadence in healthy and fit subjects. Five young women, with at least one year of experience conducting head- out aquatic programs were videotaped in the frontal plane, with a pair of cameras providing a double projection (above and below the water surface). Subjects performed an incremental protocol of five bouts (120 b·min(-1), 135 b·min(-1), 150 b·min(-1), 165 b·min(-1) and 180 b·min(-1)) with 16 full cycles of the "Jumping jacks" exercise. Data processing and calculation of upper limbs' (i.e. hands), lower limbs' (i.e. feet) and center of mass' 2D linear velocity and displacement were computed with the software Ariel Performance Analysis System and applying the 2D-DLT algorithm. Subjects decreased the cycle period during the incremental protocol. Significant and negative relationships with the musical cadence were verified for the center of mass and upper limbs vertical displacement. On the other hand, for the lower limbs lateral velocity, a significant and positive relationship was observed. It is concluded that expert and fit subjects increase the lower limb's velocity to maintain the range of motion, while the upper limb's displacement is reduced to coupe the music cadence. Key pointsWhile performing the Jumping Jacks, expert and fit subjects increase their lower limbs segmental velocity to maintain the range of motion.The upper limbs displacement is reduced to maintain the music cadence.Expert and fit subjects present similar response for alternating or simultaneously head-out aquatic exercises when increasing the music cadence. PMID:24149548

Costa, Mário J; Oliveira, Cristiana; Teixeira, Genoveva; Marinho, Daniel A; Silva, António J; Barbosa, Tiago M

2011-01-01

117

Prediction methods of spudcan penetration for jack-up units  

NASA Astrophysics Data System (ADS)

Jack-up units are extensively playing a successful role in drilling engineering around the world, and their safety and efficiency take more and more attraction in both research and engineering practice. An accurate prediction of the spudcan penetration depth is quite instrumental in deciding on whether a jack-up unit is feasible to operate at the site. The prediction of a too large penetration depth may lead to the hesitation or even rejection of a site due to potential difficulties in the subsequent extraction process; the same is true of a too small depth prediction due to the problem of possible instability during operation. However, a deviation between predictive results and final field data usually exists, especially when a strong-over-soft soil is included in the strata. The ultimate decision sometimes to a great extent depends on the practical experience, not the predictive results given by the guideline. It is somewhat risky, but no choice. Therefore, a feasible predictive method for the spudcan penetration depth, especially in strata with strong-over-soft soil profile, is urgently needed by the jack-up industry. In view of this, a comprehensive investigation on methods of predicting spudcan penetration is executed. For types of different soil profiles, predictive methods for spudcan penetration depth are proposed, and the corresponding experiment is also conducted to validate these methods. In addition, to further verify the feasibility of the proposed methods, a practical engineering case encountered in the South China Sea is also presented, and the corresponding numerical and experimental results are also presented and discussed.

Zhang, Ai-xia; Duan, Meng-lan; Li, Hai-ming; Zhao, Jun; Wang, Jian-jun

2012-12-01

118

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

119

Stimulating Children to Read and Writer through Jack Tales (In the Classroom).  

ERIC Educational Resources Information Center

Describes the procedures for writing "Jack Tales," adaptations of the familiar folktale "Jack and the Beanstalk." Discusses how this writing activity integrates reading and writing across the curriculum and effectively heightens multicultural awareness as students try to apply the basic plot structure to diverse cultural settings. (MG)

Bush, Betty J.; And Others

1992-01-01

120

THE EXPERIMENTAL DETERMINATION OF THE NATURAL FREQUENCIES OF THE METAL-RUBBER JACKS  

Microsoft Academic Search

In this paper two methods for experimental determination of the natural frequency of the metal-rubber articulations (jacks) are presented. The first one determines the natural frequency by using the hysteresis of the jack and the second method determines it by maintaining the torsion moment constant and changing the frequency until the deformation angle becomes constant.

Ciofoaia V

121

Remembering Community Inclusion: Stories From the Life of Jack Eldon Baker  

ERIC Educational Resources Information Center

Jack Eldon Baker was born, lived, and died in Gilbert, Arkansas. The story of his life is retold in excerpts from a memorial publication published by the people of the town. This article also makes the case that his story is an example of community inclusion. Through the voices of those who knew him, we see Jack as a person who gave to the…

Millington, Michael J.

2005-01-01

122

Harsher working environments require rational assessments of jack-ups in operation  

Microsoft Academic Search

The use of jack-ups for offshore drilling operations has increased considerably over the last ten years, and today, the total jack-up rig fleet exceeds 400 units, of which 350 or more are reportedly working. Some of these units are operating or are scheduled to drill in new frontier areas where limited knowledge of soil conditions exists and harsher environments are

Matos

1984-01-01

123

Unique metered combustion controller replaces traditional jack shaft control  

SciTech Connect

Traditional jack shaft controls attempt to proportion a burner's air and fuel valves. There is much potential for improvement. The largest of boilers (over 600 hp) can cost justify the first cost and maintenance expense of oxygen trim systems with oxygen sensors. The majority of fire-tube boilers and many of the small and medium water tubed boilers, however, often cannot get an ample payback on oxygen sensor investment. An industrial combustion control system has been adapted for use on boilers and fired heaters. An investment in a single computer can be used to independently control up to 4 boilers. The efficiency of most boiler and multi-zone heaters and furnaces can now be increased with a good ROI. The results of 4 representative installations are presented. 2 figures.

West, J.

1986-03-01

124

Centrifugal cast steel elements for jack-up  

SciTech Connect

The Engineering Staff has to compare many materials prior to selecting any when carrying out the realization of an offshore platform. The following selection criteria prevail: strength level, minimum mechanical steel properties, manufacturing processes affecting the quality, thus the safety level of the structure, shape of product, assembly processes and, especially, welding and heat-treatments. For certain movable structures of the Jack-Up type, various investigations showed that it may be interesting to use high-resistant steel. After a very brief description of the centrifugal technique and its advantages, the authors present the two steel grades especially elaborated for this utilization as well as their main properties. The manufactured specifications as well as the production technique of great-length columns and bracings are indicated together with the utilization of these elements by the Constructor. As a conclusion, the authors describe the advantages of this technique as well as their development possibilities.

Royer, A.; Dumas, B.

1983-01-01

125

Punch-through instability of jack-up on seabed  

SciTech Connect

Punch-through failure of the foundation of an independent leg jackup platform is the uncontrollable penetration of the spudcan into the seabed without increase in deck load. This paper shows how punch-through can also occur as a result of an instability of the structure as a whole, which is analogous to the overturning of a top-heavy ship and to the Euler buckling of an inelastic strut. A small tilt can develop uncontrollably when the tilt causes an increase in reaction on a penetrating leg which is greater than the increase in bearing resistance associated with the added penetration. The instability depends on the weight of the platform, its height above the foundations, the soil profile, and the sequence of jacking and preloading of the legs. It is more likely to occur during preload when the platform has its maximum weight than during operations.

Hambley, E.C.

1985-04-01

126

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

127

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

NASA Astrophysics Data System (ADS)

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.; Bombin, H.; Andrist, Ruben S.; Martin-Delgado, M. A.

2010-01-01

128

Heavy duty precision leveling jacks expedite setup time on horizontal boring mill  

NASA Technical Reports Server (NTRS)

Leveling jack is a precise alignment tool which expedites the setup of components or assemblies up to 2500 pounds on horizontal boring mills. This tool eliminates the necessity of wedges and blocks to shim the components to proper position.

Dellenbaugh, W.; Jones, C.

1966-01-01

129

The Sound of Silence: The Influence of Mahayana Buddhism on Jack Kerouac's Mexico City Blues  

Microsoft Academic Search

It is well known that Mahayana Buddhism exerted a major influence upon the subject matter of the writings of Jack Kerouac. It is little known however, that Mahayana also had an influence upon the formal qualities of Kerouac's work. In \\

Ian Brown

2006-01-01

130

Poisoning with the North American Jack O'Lantern mushroom, Omphalotus illudens.  

PubMed

Ingestion of Jack O'Lantern mushrooms by fourteen people led to vomiting in 8, diarrhea in 5, weakness in 2. Tiredness, the feeling of weakness and being cold occurred in 8. Recovery was complete within 18 hours. PMID:3290510

French, A L; Garrettson, L K

1988-01-01

131

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

132

Stability of Myrmecia pilosula (Jack Jumper) Ant venom for use in immunotherapy  

Microsoft Academic Search

Allergy to Myrmecia pilosula (Jack Jumper Ant) venom is common in Australia, affecting ?2.7% of some communities. Venom immunotherapy is a highly effective treatment, but for the venom to be widely distributed for clinical use, the stability and shelf-life of formulated Jack Jumper Ant venom must be demonstrated. HPLC–UV, ELISA Inhibition, SDS-PAGE and SDS-PAGE Immunoblot were used to assess venom

Michael D. Wiese; Noel W. Davies; Tim K. Chataway; Robert W. Milne; Simon G. A. Brown; Robert J. Heddle

2011-01-01

133

Jack bean ( Canavalia ensiformis ): Nutrition related aspects and needed nutrition research  

Microsoft Academic Search

The nutritional characteristics and food potentials of jack bean (Canavalia ensiformis) have been reviewed. The bean is a good sources of protein, 23% to 34%, and carbohydrate 55%. It is also a good source of\\u000a Ca, Zn, P, Mg, Cu and Ni. Jack bean protein is adequate in most essential amino acids with the exception of methionine and\\u000a cystine which

M. A. Akpapunam; S. Sefa-Dedeh

1997-01-01

134

Static and seismic design of one-way and two-way jack arch masonry slabs  

Microsoft Academic Search

Steel I-beam, brick jack arch slabs have long been used to floor and roof industrial and residential buildings in many parts of the world. Collapse of a large number of these non-homogeneous one-way slabs during past earthquakes has highlighted their poor seismic performance. However, due to their easy construction together with low cost, the jack-arch slab is still widely used

Mahmoud R. Maheri; Hamid Rahmani

2003-01-01

135

Evaluation of long-term extreme response statistics of jack-up platforms  

Microsoft Academic Search

This paper is concerned with the models appropriate for the dynamic assessment of jack-ups, concentrating particularly on the long-term response due to random ocean waves and on work-hardening plasticity models used for spud-can response. A methodology for scaling of short-term statistics, calculated using a Constrained NewWave technique, is shown in a numerical experiment for an example jack-up and central North

M. J. Cassidy; P. H. Taylor; R. Eatock Taylor; G. T. Houlsby

2002-01-01

136

Experimental Investigation of a Model Jack-Up Unit on Clay  

Microsoft Academic Search

Offshore jack-up units are primarily used in relatively shallow water depths as hydrocarbon exploration units. In recent times, the offshore industry has considered extending their use to deeper waters and for longer durations as production platforms. The severe conditions experienced by these units necessitate a comprehensive understanding of the overall jack-up behaviour, particularly soil-structure interaction and load sharing among the

G. Vlahos; C. M. Martin; M. J. Cassidy

2001-01-01

137

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

138

Lessons from Jack Griffin and the "pathogenesis of peripheral nerve disease".  

PubMed

This contribution reviews aspects of the 10 years I spent with Dr. Jack Griffin in the Department of Neurology at Johns Hopkins University. It highlights how Jack influenced my research career and changed my focus from a myelin centric basic science researcher to one that had an appreciation of the interdependence of axon and myelin forming cells as it related to the pathogenesis of human demyelinating diseases. PMID:23279427

Trapp, Bruce D

2012-12-01

139

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

140

Comparative analysis of a jack-up drilling unit with different leg systems  

NASA Astrophysics Data System (ADS)

The jack-up unit is one of the best drilling platforms in offshore oil fields with water depth shallower than 150 meters. As the most pivotal component of the jack-up unit, the leg system can directly affect the global performance of a jack-up unit. Investigation shows that there are three kinds of leg structure forms in the world now: the reverse K, X, and mixing types. In order to clarify the advantage and defects of each one, as well as their effect on the global performance of the jack-up unit, this paper commenced to study performance targets of a deepwater jack-up unit with different leg systems (X type, reverse K type, and mixing type). In this paper a typical leg scantling dimension and identical external loads were selected, detailed finite element snalysis (FEA) models were built to simulate the jack-up unit's structural behavior, and the multi-point constraint (MPC) element together with the spring element was used to deal with the boundary condition. Finally, the above problems were solved by comparative analysis of their main performance targets (including ultimate static strength, dynamic response, and weight).

Ren, Xiangang; Bai, Yong; Jia, Lusheng

2012-09-01

141

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

SciTech Connect

A jacking mechanism is described 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, J.E.; Wineman, A.L.

1984-01-24

142

Anti-proliferative and apoptotic properties of a peptide from the seeds of Polyalthia longifolia against human cancer cell lines.  

PubMed

The peptides produced enzymatically from various plants have shown various biological activities including cytotoxicity. Different types of cytotoxic peptides have been reported from the seeds and leaves of Violaceae, Rubiaceae and Annonaceae families. In this study, we report purification and characterization of peptide(s) showing cytotoxic activity against A549 and HeLa cancer cell lines from the seeds of Polyalthia longifolia (Annonaceae). Seed proteins of P. longifolia were extracted and hydrolyzed using trypsin. The enzyme hydrolysate was applied on to a Sephadex G10 column and eluted using Tris-HC1 buffer (pH 7.5). Two fractions F1 and F2 were obtained, of which F2 showed significant cytotoxic activity against lung (A549) cancer cells at 10 microg/mL and cervical (HeLa) cancer cell lines at 30 microg/mL, as revealed by the MTT assay. DNA fragmentation was observed in the tested cancer cell lines treated with F2 peptide at a concentration of 10microg/mL and 30 pg/mL, respectively. Further, increased number of apoptotic cells was observed in sub-G0 phase of cell cycle of A549 and HeLa cell lines, when treated with 10 microg/mL and 30 microg/mL of F2, as revealed by the flow cytometric analyses. FTIR spectrum of F2 peptide detected the presence of stretching vibrations of carboxylic acid OH residue with peak at 3420 cm-and carbonyl (C=O) groups at 1636 cm-1, respectively. RP-HPLC analysis of F2 peptide showed a single peak at a retention time of 12.8 min detected at 280 nm, depicting the purity of F2 to be more than 90%. LC-ESI-MS/MS analysis showed the average theoretical mass of F2 to be 679.8 using m/z ratios. In conclusion, the findings suggest that F2 peptide is an effective inducer of apoptosis of cancer cells, thus offers an important strategy in the development of cancer therapeutics. PMID:24980016

Rupachandra, S; Sarada, D V L

2014-04-01

143

Use of Direct Thaw Insemination to Establish Pregnancies with Frozen–Thawed Semen from a Standard Jack  

Microsoft Academic Search

Pregnancy rates reported after artificial insemination with frozen–thawed jack spermatozoa have been relatively low compared with those attained in other species. Cholesterol is known to influence post-thaw fertility of both jack and stallion semen, and altering the amount of cholesterol in the freezing extender may help improve the fertility of frozen–thawed jack semen samples. In this study, we report clinical

Rebecca J. Jepsen; Lawrence E. Evans; Curtis R. Youngs

2010-01-01

144

Multi-function magnetic jack control drive mechanism  

DOEpatents

A multi-function magnetic jack control drive mechanism for controlling a nuclear reactor is provided. The mechanism includes an elongate pressure housing in which a plurality of closely spaced drive rods are located. Each drive rod is connected to a rod which is insertable in the reactor core. An electromechanical stationary latch device is provided which is actuatable to hold each drive rod stationary with respect to the pressure housing. An electromechanical movable latch device is also provided for each one of the drive rods. Each movable latch device is provided with a base and is actuatable to hold a respective drive rod stationary with respect to the base. An electromechanical lift device is further provided for each base which is actuatable for moving a respective base longitudinally along the pressure housing. In this manner, one or more drive rods can be moved in the pressure housing by sequentially and repetitively operating the electromechanical devices. Preferably, each latch device includes a pair of opposed latches which grip teeth located on the respective drive rod. Two, three, or four drive rods can be located symmetrically about the longitudinal axis of the pressure housing.

Bollinger, Lawrence R. (Schenectady, NY); Crawford, Donald C. (Scotia, NY)

1986-01-01

145

Anti-inflammatory effect of Mentha longifolia in lipopolysaccharide-stimulated macrophages: reduction of nitric oxide production through inhibition of inducible nitric oxide synthase.  

PubMed

Mentha longifolia is an aromatic plant used in flavoring and preserving foods and as an anti-inflammatory folk medicine remedy. The present study assessed the effects of M. longifolia extracts, including essential oil and crude methanol extract and its fractions (ethyl acetate, butanol and hexane), on nitric oxide (NO) production and inducible NO synthase (iNOS) mRNA expression in lipopolysaccharide (LPS)-stimulated J774A.1 cells using real-time polymerase chain reaction (PCR). The cytotoxic effects of the extracts on the cells were examined and non-cytotoxic concentrations (<0.2?mg/ml) were used to examine their effects on NO production and iNOS mRNA expression. Only the hexane fraction that contained high levels of phenolic and flavonoid compounds at concentrations from 0.05-0.20?mg/ml significantly reduced NO production in LPS-stimulated cells (p?longifolia possibly reduces NO secretion in macrophages by scavenging NO and inhibiting iNOS mRNA expression, and also decreases TNF? pro-inflammatory cytokine expression, thus showing its usefulness in the inflammatory disease process. PMID:23350953

Karimian, Parastoo; Kavoosi, Gholamreza; Amirghofran, Zahra

2013-01-01

146

Spin-singlet quantum Hall states and Jack polynomials with a prescribed symmetry  

NASA Astrophysics Data System (ADS)

We show that a large class of bosonic spin-singlet Fractional Quantum Hall model wavefunctions and their quasihole excitations can be written in terms of Jack polynomials with a prescribed symmetry. Our approach describes new spin-singlet quantum Hall states at filling fraction ?=2k/2r-1 and generalizes the (k,r) spin-polarized Jack polynomial states. The NASS and Halperin spin-singlet states emerge as specific cases of our construction. The polynomials express many-body states which contain configurations obtained from a root partition through a generalized squeezing procedure involving spin and orbital degrees of freedom. The corresponding generalized Pauli principle for root partitions is obtained, allowing for counting of the quasihole states. We also extract the central charge and quasihole scaling dimension, and propose a conjecture for the underlying CFT of the (k,r) spin-singlet Jack states.

Estienne, Benoit; Bernevig, B. Andrei

2012-04-01

147

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

148

Measurement of rock-mass deformation properties by the borehole jacking method at the near-surface test facility  

Microsoft Academic Search

Borehole jacking tests have been conducted in an attempt to estimate the in situ deformation properties of Pomona basalt in the Near-Surface Test Facility (NSTF) on the Hanford Site, Washington. Full-scale heater tests are being conducted there as part of the feasibility study of radioactive waste disposal in basalt. The borehole jacking method obtains directionally oriented modulus values at depth

F. S. Shuri; D. J. Dodds; K. Kim

1980-01-01

149

Separation of jack bean ( Canavalia ensiformis) urease isoforms by immobilized metal affinity chromatography and characterization of insecticidal properties unrelated to ureolytic activity  

Microsoft Academic Search

In this work we described the separation of two isoforms of urease from jack bean seeds, the “classical” jack bean urease (JBU) and canatoxin (CNTX), using immobilized metal affinity chromatography (IMAC). Jack bean urease isoforms presented differential behavior on a cobalt-loaded iminodiacetic acid (IDA)–Sepharose column and IMAC is proposed as an efficient method to isolate the isoenzymes. The metal content

Cristian Follmer; German E Wassermann; Célia R Carlini

2004-01-01

150

Age and Nature of the Protocrust of the Jack Hills Zircon Host Rock  

NASA Astrophysics Data System (ADS)

A fundamental question about Earth evolution is to understand when growth of continental crust began. Constraining this event will help date the timing of onset of plate tectonics and thus ultimately the origin of life. We have addressed this problem by Pb-Pb dating of single Hadean zircons from Jack Hills in Western Australia combined with analysis of their Hf isotopic compositions. We found an average age for the Hadean population of the Jack Hills zircons analyzed here of 4.1±0.1 Ga suggesting that the host rock of the Jack Hills zircons formed as a single event rather than a succession of pulses. Most of the grains have Hf isotopic compositions less radiogenic than both chondrites and the depleted mantle at that time indicating that the host rock of the Jack Hills zircons derived from an enriched reservoir, or source rock, with sub- chondritic Lu/Hf. Monte Carlo modeling gives an age for this source rock of 4.35 Ga and a 176Lu/177Hf ratio of 0.05. Such a low Lu/Hf ratio does not match either modern oceanic crust, island arc rocks, or subduction-zone type granites, but better fits Archean TTG suites, which themselves in turn may have been produced by melting of the last remains of the terrestrial magma ocean (hydrous KREEPy basalt). If this proposition is correct, then whether plate tectonics had started by the time the Jack Hills zircons formed at ~4.1 Ga hinges critically around the understanding of the processes that produced TTGs in the first place. If, as suggested by recent literature, TTGs are not subduction zone magmas, the Jack Hills zircons may not have been witnesses to early plate tectonics. If, however, TTGs do represent magmas formed at plate margins, the Jack Hills zircons become the oldest manifestation of plate tectonics operating under some form at ~4.35 Ga. Alternatively, the source of the host rock of the Jack Hills zircons could have been a partial melt of KREEPy material that formed an enriched oceanic crust that subducted and remelted a few 100's of My later.

Blichert-Toft, J.; Albarede, F.

2008-12-01

151

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

152

Determination of in vitro antioxidative and antimicrobial properties and total phenolic contents of Ziziphora clinopodioides, Cyclotrichium niveum, and Mentha longifolia ssp. typhoides var. typhoides.  

PubMed

The aerial parts of Ziziphora clinopodioides, Cyclotrichium niveum, and Mentha longifolia ssp. typhoides var. typhoides were screened for their possible antioxidant and antimicrobial activities in addition to their penolic contents. Antioxidant activity was employed by two complementary test systems: 2,2'-diphenyl-1-picrylhydrazyl free radical scavenging and beta-carotene/linoleic acid. In the first case, Z. clinopodioides was superior to the other species with a 50% inhibitory concentration value of 37.73 +/- 1.18 microg/mg. Similar results were obtained from the beta-carotene/linoleic acid system. Inhibition capacity of the linoleic acid of Z. clinopodioides was 83.56 +/- 1.19%. Additionally, antioxidant activities of butylated hydroxytoluene, curcumin, and ascorbic acid were determined in parallel experiments. Methanol extracts obtained from the plants studied were found to have moderate antimicrobial activity against all microorganisms tested. In general, Z. clinopodioides extract exhibited stronger activity than the other extracts. On the other hand, Acinetobacter lwoffii and Candida krusei were the most sensitive microorganisms for the all extracts. The amount of the total phenolics was highest in Z. clinopodioides extract (129.55 +/- 2.26 microg/mg), followed by M. longifolia ssp. typhoides var. typhoides (93.47 +/-1.84 microg/mg). It is extremely important to note that there is a positive correlation between antioxidant activity potential and amount of phenolic compounds. PMID:19627221

Gursoy, Nevcihan; Sihoglu-Tepe, Arzuhan; Tepe, Bektas

2009-06-01

153

A new herbal combination, Etana, for enhancing erectile function: an efficacy and safety study in animals  

Microsoft Academic Search

We present herein a new herbal combination called Etana that is composed of five herbal extracts including Panax quinquelotius (Ginseng), Eurycoma longifolia (Tongkat Ali), Epimedium grandiflorum (Horny goat weed), Centella asiatica (Gotu Kola) and flower pollen extracts. Most of the above-mentioned extracts have a long historical and traditional use for erectile dysfunction (ED). On the basis of the mechanism of

N Qinna; H Taha; K Z Matalka; A A Badwan

2009-01-01

154

Antimicrobial and Antioxidative Activities of Bioactive Constituents from Hydnophytum formicarum Jack  

Microsoft Academic Search

Hydnophytum formicarum Jack. (Rubiaceae) is a medicinal plant whose tubers possesses cardiovascular, anti-inflammatory and antiparasitic effects and have been used for the treatment of hepatitis, rheumatism and diarrhea. Herein we report the isolation of its active constituents and the testing of their antimicrobial activity against 27 strains of microorganisms using an agar dilution method and of their antioxidative activity using

Supaluk Prachayasittikul; Prasit Buraparuangsang; Apilak Worachartcheewan; Chartchalerm Isarankura-Na-Ayudhya; Somsak Ruchirawat; Virapong Prachayasittikul

2008-01-01

155

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

156

Energy production in irrigated, intensively cultured plantations of Populus Tristis number 1 and jack pine  

Microsoft Academic Search

Energy budgets were prepared for irrigated, intensively cultured plantations of Populus Tristis number 1 and jack pine in northern Wisconsin. Energy inputs into biomass production (site preparation, fertilization, weed control, irrigation, and harvesting) and into material processing (chipping and drying) amounted to about 20 percent of the total energy at age 10. The available energy (after deducting energy inputs) in

Zavitkovski

1979-01-01

157

Twenty-Year Performances of Scotch, European Black (Austrian), Red, and Jack Pines in Eastern Nebraska.  

National Technical Information Service (NTIS)

Sources of Scotch, European black (Austrian), red, and jack pines were identified that produce trees, at age 20, which are well-adapted to eastern Nebraska in terms of survival, height and diameter growth, crown and stem characteristics, cone production a...

D. F. Van Haverbeke

1986-01-01

158

Multiple cohorts of juvenile jack mackerel Trachurus japonicus in waters along the Tsushima Warm Current  

Microsoft Academic Search

The jack mackerel, Trachurus japonicus, has a prolonged spawning season and widely spread spawning grounds. The population in the coastal waters of Japan seems to be composed of several cohorts spawned seasonally from different waters. To understand its population structure along the Tsushima Warm Current, we analysed hatchdates and growth histories of fish from Kunda Bay, the southern, central and

Yu Kanaji; Yoshiro Watanabe; Tomohiko Kawamura; Songguang Xie; Yoh Yamashita; Chiyuki Sassa; Youichi Tsukamoto

2009-01-01

159

DESIGN AND TEST ANALYSIS OF THE MAGNETIC JACKING POSITIVE LATCH CONTROL ROD DRIVE MECHANISM  

Microsoft Academic Search

Testing of the Latch Type Magnetic Jack Control Rod Drive Mechanism was ; undertaken to determine its feasibility for application in the Yankee Atomic ; Electric pressurized water reactor. The rod drive mechanism, which will be weld ; mounted to the top of the reactor, is a hermetically sealed unit. The inherent ; advantages of this feature include (1) uniform

L. J. Balog; A. A. Bishop; T. F. Widmer

1959-01-01

160

Closing the Science-Policy Gap. A Conversation with Pediatrician Jack P. Shonkoff. Perspectives  

ERIC Educational Resources Information Center

The National Scientific Council on the Developing Child was founded to close the gap between what we know and what we do to promote the healthy development of young children. When scientific knowledge is ignored rather than used to inform early childhood policy and practices, our children pay a very high price. Council Chair Jack P. Shonkoff,…

National Scientific Council on the Developing Child, 2006

2006-01-01

161

From Word to World: Reflections on the Ezra Jack Keats Award.  

ERIC Educational Resources Information Center

Discusses the author's Ezra Jack Keats Award for "Calling the Doves/El Canto de las Palomas" (1995), a bilingual picture book based on his childhood in the farm working camps of Central California. Concludes that writers must stay true to the deep sources of multicultural experience, for positive change, and for the magical pictures and poems. (SG)

Herrera, Juan Felipe

2000-01-01

162

The acylated protein derivatives of Canavalia ensiformis (jack bean): A study of functional characteristics  

Microsoft Academic Search

Protein concentrate was prepared from jack bean (JNP) and it was modified by acylation using acetic (JAP) and succinic anhydrides (JSP). Proximate analyses revealed that moisture and ash content increased following acetylation and succinylation, while both acetylation and succinylation reduced percentage crude fat and protein. Acetylation and succinylation reduced protein solubility in the acidic pH range below the isoelectric point

O. S. Lawal; K. O. Adebowale

2006-01-01

163

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

164

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

165

JACK-UP RIG FOUNDATION DESIGN APPLYING 3D FE STRUCTURE - SOIL - INTERACTION MODELLING  

Microsoft Academic Search

SUMMARY: The foundation engineering assessment for the world's largest jack-up rig installed offshore Norway is carried out. Based on the site survey and soil investigation data the soil conditions vary accross the site and consist of bedrock overlied by very soft silt \\/ clay and a shallow layer of seabed sand. From the conventional and finite element analyses an engineering

L KELLEZI; G KUDSK; H HOFSTEDE

166

Failure probability of a jack-up under environmental loading in the central North Sea  

Microsoft Academic Search

The annual probability of failure has been calculated for a jack-up subjected to extreme storm loading in the central North Sea. Statistics of extreme loads were generated using models that account for the combined behaviour of winds, waves and current in severe storms. The fluid loading is calculated using well validated theories for the kinematics of extreme random waves and

B. H. Jukui; P TROMANS; L VANDERSCHUREN

1996-01-01

167

Recent contributions of geotechnical centrifuge modelling to the understanding of jack-up spudcan behaviour  

Microsoft Academic Search

The paper presents an overview of the recent contributions of centrifuge modelling to the understanding of soil–structure interaction and the development of design and predictive methods in the field of mobile jack-up drilling rig foundations. Both advantages and limitations of the centrifuge methods are detailed and key examples are presented. The benefits provided by centrifuge modelling to the development of

Christophe Gaudin; Mark Jason Cassidy; Britta Bienen; Muhammad Shazzad Hossain

2011-01-01

168

Sensitivity of AIRSAR data to changes in component biomass for BOREAS jack pine stands  

Microsoft Academic Search

As part of the BOREAS experiment, the relationship between the components of stand biomass and the radar backscattering coefficients are examined. Four jack pine stands with broadly varying biomass statistics are compared to AIRSAR P-band data. Even age stands have been chosen with biomass values ranging from 10 to 200 t\\/ha. Stand statistics, architecture, dielectric constants and forest surface characteristics

R. H. Lang; O. Kilic; R. Cacciola; N. Chauhan; R. Landry

1995-01-01

169

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

170

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

171

Modified Jack-knife estimation of parameter uncertainty in bilinear modelling by partial least squares regression (PLSR)  

Microsoft Academic Search

A method for assessing the uncertainty of the individual bilinear model parameters from two-block regression modelling by multivariate partial least squares regression (PLSR) is presented. The method is based on the so-called “Jack-knife” resampling, comparing the perturbed model parameter estimates from cross-validation with the estimates from the full model. The conventional jack-knifing from ordinary least squares regression is modified in

Harald Martens; Magni Martens

2000-01-01

172

Some physicochemical properties and anti-nutritional factors of raw, cooked and germinated Jack bean ( Canavalia ensiformis)  

Microsoft Academic Search

Physicochemical properties and anti-nutritional factors of raw, cooked and germinated Jack bean (Canavalia ensiformis) were studied. Jack bean seeds were relatively large, measuring 1.88 cm in length, 1.32 cm in width and 1.09 cm in thickness. The 1000 seed weight was 1.78 kg. The seed coat formed about 13.3% of the whole seed, resulting in high fibre content of the

M. A. Akpapunam; S. Sefa-Dedeh

1997-01-01

173

Offshore foundation systems for resource recovery: Assessing the three-dimensional response of jack-up platforms  

Microsoft Academic Search

Self-installing mobile jack-ups platforms retain a dominate role in the exploration of offshore oil and gas in water depths\\u000a up to around 120 m. However, significant challenges in assessing their stability and dynamic performance under large storm\\u000a loading remain. For instance, their long slender truss-work legs and large inverted conical spudcan footings cause the natural\\u000a period of the jack-up to

Mark J. Cassidy

2011-01-01

174

Measurement of rock-mass deformation properties by the borehole jacking method at the near-surface test facility  

SciTech Connect

Borehole jacking tests have been conducted in an attempt to estimate the in situ deformation properties of Pomona basalt in the Near-Surface Test Facility (NSTF) on the Hanford Site, Washington. Full-scale heater tests are being conducted there as part of the feasibility study of radioactive waste disposal in basalt. The borehole jacking method obtains directionally oriented modulus values at depth in the rock mass. Seventy-six tests were conducted in two horizontal and four vertical boreholes.

Shuri, F.S.; Dodds, D.J.; Kim, K.

1980-10-01

175

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

176

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 2k + 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.

2014-03-01

177

Geotechnical hazards associated with leg penetration of jack-up rigs  

SciTech Connect

In recent years there has been a large increase in offshore oil and gas exploration activities. A large proportion of the work is being performed with jack-up drilling rigs. Jack-up rigs basically are of 2 types, depending on their foundation: Mat-supported or Individual footings (spud cans). Mat supported rigs have a large foundation bearing area and therefore impose relatively low bearing pressures on the seabed resulting in limited penetration. Mats are usually A-shaped and are suitable for use when the seabed comprises very soft clay soils. However, mat supported rigs require that the seabed is fairly level and their stability is sensitive to factors such as subsoil variability, cyclic and eccentric load effects, lateral sliding resistance and seabed instability. Rigs supported on individual footings are more numerous and much more widely used in South East Asia and this paper presents aspects of geotechnical hazards that may be encountered when their legs penetrate into the seabed.

Kee, R.

1984-02-01

178

Dynamic analysis method of offshore jack-up platforms in regular and random waves  

NASA Astrophysics Data System (ADS)

A jack-up platform, with its particular structure, showed obvious dynamic characteristics under complex environmental loads in extreme conditions. In this paper, taking a simplified 3-D finite element dynamic model in extreme storm conditions as research object, a transient dynamic analysis method was proposed, which was under both regular and irregular wave loads. The steps of dynamic analysis under extreme conditions were illustrated with an applied case, and the dynamic amplification factor (DAF) was calculated for each response parameter of base shear, overturning moment and hull sway. Finally, the structural response results of dynamic and static were compared and analyzed. The results indicated that the static strength analysis of the Jack-up Platforms was not enough under the dynamic loads including wave and current, further dynamic response analysis considering both computational efficiency and accuracy was necessary.

Yu, Hao; Li, Xiaoyu; Yang, Shuguang

2012-03-01

179

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

180

Seed-mediated growth of jack-shaped gold nanoparticles from cyclodextrin-coated gold nanospheres.  

PubMed

Branched gold nanoparticles were prepared by a seed-mediated approach using per-6-thio-6-deoxy-?-cyclodextrin capped gold nanospheres as seeds and a growth medium similar to those commonly employed to prepare gold nanorods, containing AgNO3, ascorbic acid and cetyltrimethylammonium bromide. Novel jack-shaped gold nanoparticles (102-105 nm) were obtained at a specific range of Ag(+) ion concentrations (62-102 ?M). The crystalline structure of these nanoparticles was confirmed by high-resolution transmission electron microscopy. The influence of the perthiolated ?-cyclodextrin on the successful preparation of gold nanojacks was demonstrated. The jack-shaped gold nanoparticles showed strong absorption in the near infrared region and excellent catalytic activity for the electrochemical oxidation of H2O2. PMID:23959027

Sánchez, Alfredo; Díez, Paula; Villalonga, Reynaldo; Martínez-Ruiz, Paloma; Eguílaz, Marcos; Fernández, Iñigo; Pingarrón, José M

2013-10-21

181

Changes in Mitochondrial Properties Associated with Chloroplast Development in Jack Bean (Canavalia ensiformis [L] DC.) 1  

PubMed Central

Procedures were developed to isolate actively respiring mitochondria from jack bean (Canavalia ensiformis [L.] DC.) leaves and cotyledons. Consistent respiratory control values of about 2 for succinate oxidation were obtained in preparations from etiolated cotyledons. Jack bean mitochondria oxidized malate with high respiratory control (2 to 5) and ADP/O (up to 2.8). Mitochondria purified from greening leaves and cotyledons exhibited rapid increases in respiratory control for up to 4 hours of light exposure followed by a decrease in activity. ADP/O values remained constant at about 1.2 while oxygen consumption per unit mitochondrial protein increased constantly during the first 14 hours of greening in preparations from cotyledons. The changes in mitochondrial respiratory activity during greening were correlated with the reversible appearance of mitochondria in the condensed conformation observed by electron microscopy. Both isolated mitochondrial pellets and cotyledon mitochondria in situ were shown to exhibit these changes in conformation during greening. Images

Bourque, Don P.; Naylor, Aubrey W.

1972-01-01

182

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

Microsoft Academic Search

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

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

2008-01-01

183

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

Microsoft Academic Search

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

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

2008-01-01

184

A kinetic study of jack-bean urease denaturation by a new dithiocarbamate bismuth compound  

NASA Astrophysics Data System (ADS)

A kinetic study concerning enzymatic inhibitory effect of a new bismuth dithiocarbamate complex on jack-bean urease is reported. A neural network approach is used to solve the ill-posed inverse problem arising from numerical treatment of the subject. A reaction mechanism for the urease denaturation process is proposed and the rate constants, relaxation time constants, equilibrium constants, activation Gibbs free energies for each reaction step and Gibbs free energies for the transition species are determined.

Menezes, D. C.; Borges, E.; Torres, M. F.; Braga, J. P.

2012-10-01

185

A light carbon reservoir recorded in zircon-hosted diamond from the Jack Hills  

Microsoft Academic Search

The recent discovery of diamond-graphite inclusions in the Earth's oldest zircon grains (formed up to 4,252 Myr ago) from the Jack Hills metasediments in Western Australia provides a unique opportunity to investigate Earth's earliest known carbon reservoir. Here we report ion microprobe analyses of the carbon isotope composition of these diamond-graphite inclusions. The observed delta13CPDB values (expressed using the PeeDee

Alexander A. Nemchin; Martin J. Whitehouse; Martina Menneken; Thorsten Geisler; Robert T. Pidgeon; Simon A. Wilde

2008-01-01

186

Carbon and Nitrogen Dynamics of Boreal Jack Pine Stands With and Without a Green Alder Understory  

Microsoft Academic Search

We compared the species composition, structure and selected components of the carbon (C) and nitrogen (N) budgets of similar-aged,\\u000a mature boreal jack pine (Pinus banksiana Lamb.) forests with and without green alder [Alnus crispa (Ait.) Pursh.] in two different boreal environments. The C and N content of the overstory biomass components (for example,\\u000a stem, branch, and foliage), total vegetation, forest

Jason G. Vogel; Stith T. Gower

1998-01-01

187

Climate-diameter growth relationships of black spruce and jack pine trees in boreal Ontario, Canada.  

PubMed

To predict the long-term effects of climate change - global warming and changes in precipitation - on the diameter (radial) growth of jack pine (Pinus banksiana Lamb.) and black spruce (Picea mariana [Mill.] B.S.P.) trees in boreal Ontario, we modified an existing diameter growth model to include climate variables. Diameter chronologies of 927 jack pine and 1173 black spruce trees, growing in the area from 47°N to 50°N and 80°W to 92°W, were used to develop diameter growth models in a nonlinear mixed-effects approach. Our results showed that the variables long-term average of mean growing season temperature, precipitation during wettest quarter, and total precipitation during growing season were significant (alpha = 0.05) in explaining variation in diameter growth of the sample trees. Model results indicated that higher temperatures during the growing season would increase the diameter growth of jack pine trees, but decrease that of black spruce trees. More precipitation during the wettest quarter would favor the diameter growth of both species. On the other hand, a wetter growing season, which may decrease radiation inputs, increase nutrient leaching, and reduce the decomposition rate, would reduce the diameter growth of both species. Moreover, our results indicated that future (2041-2070) diameter growth rate may differ from current (1971-2000) growth rates for both species, with conditions being more favorable for jack pine than black spruce trees. Expected future changes in the growth rate of boreal trees need to be considered in forest management decisions. We recommend that knowledge of climate-growth relationships, as represented by models, be combined with learning from adaptive management to reduce the risks and uncertainties associated with forest management decisions. PMID:23504788

Subedi, Nirmal; Sharma, Mahadev

2013-02-01

188

Antioxidant activity of the differentially processed seeds of Jack bean ( Canavalia ensiformis L. DC)  

Microsoft Academic Search

Antioxidant activity of 70% acetone extracts of raw and processed seeds of Jack bean (Canavalia ensiformis L. DC) was evaluated by various in vitro antioxidant assays, including total antioxidant, free radical scavenging, reducing\\u000a power, metal ion chelating, ?-carotene\\/linoleic acid bleaching, and antihemolytic activities. The total phenolics and tannin\\u000a contents were higher in the extract of seeds processed by autoclaving with

Kandhasamy Sowndhararajan; Perumal Siddhuraju; Sellamuthu Manian

2011-01-01

189

Starch digestibility and morphology of physically modified jack bean ( Canavalia ensiformis L.) seed flours  

Microsoft Academic Search

The effects of a drum drying treatment applied to jack bean (Canavalia ensiformis, JB) flour prior to roasting on starch morphology and digestibility were investigated. JB flours were assayed in both raw form and after mixing them with distilled water (1:1.5 flour:water proportion, w\\/v) followed by drum drying at 125°C. The drum-dried flour was then roasted at 180 or 190°C

L. Sívoli; C. Michelangeli; E. Pérez; A. Méndez; J. Tovar

2007-01-01

190

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

191

Urease in jack-bean ( Canavalia ensiformis (L.) DC) seeds is a cytosolic protein  

Microsoft Academic Search

Urease (EC 3.5.1.5) is abundantly present in the seeds of many species of Leguminosae. There is at present conflicting information in the literature about its subcellular location and status as a glycoprotein. We have made a study of the subcellular location of urease in jack-bean cotyledons using an immunocytochemical approach; in addition, we studied the biosynthesis and glycoprotein nature of

L. Faye; J. S. Greenwood; M. J. Chrispeels

1986-01-01

192

Physicochemical characteristics and thermal properties of chemically modified jack bean ( Canavalia ensiformis) starch  

Microsoft Academic Search

Starch isolated from jack bean was subjected to chemical modification through oxidation, acetylation and acid thinning. Moisture content, ash, protein, fat, fibre, amylose and pH reduced after chemical modifications. Wide angle X-ray diffractograms showed conventional ‘C’ pattern, characteristic of legume starches. Except increase in intensity observed in acid thinned starch (Atjs), no significant differences were observed between the X-ray pattern

O. S. Lawal; K. O. Adebowale

2005-01-01

193

Reduction of crosstalk noise in modular jack for high-speed differential signal interconnection  

Microsoft Academic Search

Crosstalk noise has become a significant problem in the design of high-speed digital interconnections. In this paper, we demonstrate a crosstalk reduction method, which has been successfully applied to the design of a CAT-5E modular jack. The CAT-5E is a newly adopted cabling and connector standard for advanced cabling network systems to assure more robust, reliable and high-speed operation, which

Namhoon Kim; Myunghee Sung; Hyungsoo Kim; Seungyong Baek; Woonghwan Ryu; Jeong-Gyun An; Joungho Kim

2001-01-01

194

Application of Probabilistic Models to the Response Analysis of Jack-Ups  

Microsoft Academic Search

Confidence in the long-term use of jack-up platforms in deep water and harsh environments requires appropriate models for their assessment under dynamic loading conditions. In this paper probabilistic models are used to develop further understanding of this assessment. Particular emphasis is placed on achieving a balanced approach in considering the non-linearities and uncertainties in the structure, foundations and wave loading.

M. J. Cassidy; G. T. Houlsby; R. Eatock Taylor

195

Recovery of an elevated jack-up with leg bracing member damage  

Microsoft Academic Search

During the winter of 2001–2002, while drilling over the Leman Delta platform in the southern North Sea, a modern harsh-environment jack-up operating in shallow water on a hard sandy bottom encountered an incrementally increasing, partly scour-induced, problem with eccentric spudcan loading and associated rack phase difference (RPD). After 3 months on location, while the unit was in the process of

R. W. P. Stonor; M. J. R. Hoyle; K. Nelson; N. P. Smith; R. J. Hunt

2004-01-01

196

Non-linear dynamic analysis of offshore jack-up units  

Microsoft Academic Search

A two-dimensional finite element program for the non-linear dynamic analysis of offshore jack-up units under storm loading is described. The program aims to incorporate consistent and reasonable levels of approximation of all the major system parameters; this is in contrast to many previous approaches, which have tended to model some aspects of the problem in great detail while adopting a

M. S. Williams; R. S. G. Thompson; G. T. Houlsby

1998-01-01

197

Congenital deafness in Jack Russell terriers: prevalence and association with phenotype.  

PubMed

Congenital hereditary sensorineural deafness is the most common form of deafness in dogs. The objectives of this study were to determine a reliable measure of the prevalence of deafness in Jack Russell terriers, an affected breed, and associations between deafness and phenotypic characteristics. Brainstem auditory evoked response recordings and phenotypic parameters (coat color, coat texture, sex, eye color, sire and dam hearing status) were recorded for 1009 Jack Russell terriers. The prevalence of unilateral and bilateral deafness was 3.57% and 0.50%, respectively, lower by a factor of three to four than in earlier reports based on smaller and closely related kindreds. Significant association with deafness was identified with white coat color and parental hearing status, but not with sex or coat type. Lack of significant sex or coat type associations and the significant association with white coat color are consistent with previous reports. In conclusion the prevalence of deafness in Jack Russell terriers is lower than initially reported. Deafness was associated with white coat color and parental hearing status. The association with parental hearing status supports this form of deafness being a heritable trait in the breed and the association with white coat color supports an inheritance linked to pigmentation genes. PMID:22456033

Comito, B; Knowles, K E; Strain, G M

2012-08-01

198

Estuaries as nurseries for the jacks Caranx ignobilis and Caranx melampygus (Carangidae) in Hawaii  

USGS Publications Warehouse

Estuaries provide juvenile nursery habitat for many species of fish that inhabit marine environments as adults. In Hawaii, some juvenile Caranx ignobilis and Caranx melampygus occupy estuaries opportunistically before moving to nearshore ocean habitats. This study examined the extent and nature of estuarine habitat available in the lower Hanalei River of Kauai, the relative abundance and distribution of jacks in the estuary, and their diets. Salinity measurements indicated that the upstream extent of saltwater ranged from the mouth to nearly 5 km upriver and was strongly influenced by the variable river discharge. Juvenile jacks between 80 and 310 mm FL were observed on underwater transects over the full range of mixohaline conditions. Hand-operated seine collections produced overall catch rates of ???0.64 fish/haul for each of these species. The two jacks ate much the same spectrum of food items. C. ignobilis was somewhat more piscivorous than C. melampygus, as determined by measures of frequency of predation and number and bulk of prey. Data for length at age, incorporating daily otolith increment counts from these estuarine juveniles and previous counts from non-estuarine specimens, were fitted to a lifetime von Bertalanffy growth model. The results greatly extended the age range of the model and suggested that growth rates were not much different between estuarine and non-estuarine fish. ?? 2002 Elsevier Science Ltd. All rights reserved.

Smith, G. C.; Parrish, J. D.

2002-01-01

199

Tall oil precursors and turpentine in Jack and Eastern White Pine  

SciTech Connect

The tall oil precursors and turpentine from jack pine (Pinus banksiana Lamb.) and eastern white pine (Pinus strobus L.) were investigated. The tall oil precursors (resin acids, fatty acids, and unsaponifiables were determined by chemical fractionation of the nonvolatile diethyl ether extractives (NVEE) of these speices: (approximate % resin acids, % fatty acids, % unsaponifiables, and % acids other that fatty and resin acids) - jack pine sapwood (10, 60, 10, 20%), heartwood (38, 12, 6, 44%); eastern white pine sapwood (11, 57, 9, 22%), and heartwood (11, 18, 10, 62%). The resin acids were a mixture of the pimaric and abietic acids common to pines. In addition, eastern white pine contained major amounts of the resin acid, anticopalic acid. The fatty acids were predominately oleic, linoleic, and 5, 9, 12-octadecatrienoic acids. The unsaponsiables were a complex mixture of diterpenes and sterols (mainly campesterol and sitosterol). On treating these species with paraquat, lightwood occurred in the sapwood but not in the heartwood areas as we have oberved with other pines. The NVEE of the lightwood areas contained increased amounts of resin acids, unsaponifiables, and acids other than fatty and resin acids. The total fatty acid content was essentially unchanged. Since fatty acid components are preferentially lost by esterification with neutral alcoholic constituents in the unsaponifiables during the distillation refining of crude tall oil, the increased unsaponifiables relative to the constant fatty acid content might result in a net reduction in fatty acid recovery from lightered trees. The turpentine content of both jack and eastern white pine increased on lightering and was primarily a mixture of ..cap alpha..- and ..beta..-pinene.

Conner, A.H.; Diehl, M.A.; Rowe, J.W.

1980-04-01

200

Jack-knife stretching promotes flexibility of tight hamstrings after 4 weeks: a pilot study.  

PubMed

Tight hamstrings are reported to be one of the causes of low back pain. However, there have been few reports on effective stretching procedures for the tight hamstrings. The so-called jack-knife stretch, an active-static type of stretching, can efficiently increase the flexibility of tight hamstrings. To evaluate hamstring tightness before and after the 4-week stretching protocol in healthy volunteer adults and patients aged under 18 years with low back pain. For understanding the hamstrings tightness, we measured two parameters including (1) finger to floor distance (FFD) and (2) pelvis forward inclination angle (PFIA). Eight healthy adult volunteers who had no lumbar or hip problems participated in this study (mean age: 26.8 years). All lacked flexibility and their FFD were positive before the experiment. Subjects performed 2 sets of the jack-knife stretch every day for 4 weeks. One set consisted of 5 repetitions, each held for 5 s. Before and during the 4-week experiment, the FFD and PFIA of toe-touching tests were measured weekly. For 17 of the sports players aged under 18, only FFD was measured. In adult volunteers, FFD was 14.1 ± 6.1 cm before the experiment and decreased to -8.1 ± 3.7 cm by the end of week 4, indicating a gain in flexibility of 22.2 cm. PFIA was 50.6 ± 8.2 before the experiment and 83.8 ± 5.8 degrees after. Before and after the experiment, the differences were significant (p < 0.05). For those aged under 18, FFD was 8.1 ± 8.0 and -9.6 ± 6.8, before and after the stretching, respectively. This difference was significant (p < 0.05). The jack-knife stretch is a useful active-static stretching technique to efficiently increase flexibility of tight hamstrings. PMID:23412177

Sairyo, Koichi; Kawamura, Takeshi; Mase, Yasuyoshi; Hada, Yasushi; Sakai, Toshinori; Hasebe, Kiyotaka; Dezawa, Akira

2013-08-01

201

Right cranial lung lobe torsion after a diaphragmatic rupture repair in a Jack Russell terrier  

PubMed Central

A seven-year-old male Jack Russell terrier was presented with a history of coughing, generalised weakness and lethargy 10 days after an abdominal coeliotomy to repair a large diaphragmatic rupture. Thoracic radiographs demonstrated a soft tissue mass in the midcaudal right thoracic cavity. Ultrasonographic studies, bronchoscopy and subsequent exploratory thoracotomy confirmed a diagnosis of a right cranial lung lobe torsion (LLT), with an anomalous caudodorsal displacement of the affected lobe. LLT should be considered as a differential diagnosis for respiratory tract disease following diaphragmatic rupture repair.

2008-01-01

202

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

203

Effects of Concanavalin A, Fed as a Constituent of Jack Bean (Canavalia ensiformis L.) Seeds, on the Humoral Immune Response and Performance of Broiler Chickens1  

Microsoft Academic Search

An experiment was conducted to inves- tigate the effects of the lectin, Concanavalin A (Con A), contained in raw Jack bean (JB) (Canavalia ensiformis, L.) seeds on the immunological response of broilers. A maize-soybean meal basal diet was prepared to which either 2.5, 5, or 10% of ground raw Jack bean (RJB) seeds was added. The RJB seeds contained 24

A. MENDEZ; R. E. VARGAS; C. MICHELANGELI

204

Measured spudcan fixity: analysis of instrumentation data from three North Sea jack-up units and correlation to site assessment procedures  

Microsoft Academic Search

Including spudcan fixity in a jack-up site assessment enhances the performance of the rig with respect to standard acceptance criteria, and hence expands the operating envelope of the unit. Monitoring of three harsh environment jack-up units over the period from 1991 to 1996 has yielded a significant quantity of data from which clear conclusions can be drawn about the degree

I. Temperton; R. W. P. Stonor; C. N. Springett

1999-01-01

205

Effects of Mentha longifolia L. essential oil and nisin alone and in combination on Bacillus cereus and Bacillus subtilis in a food model and bacterial ultrastructural changes.  

PubMed

In the face of emerging new pathogens and ever-growing health-conscious customers, food preservation technology remains on the top agenda of food industry. This study was aimed at determining the effects of the essential oil of Mentha longifolia L., alone and in combination with nisin, on Bacillus cereus and Bacillus subtilis at 8°C and 25°C in a food model (commercial barley soup) during 15 days. The essential oil alone at 8°C inhibited bacterial growth significantly compared with the control (p?

Pajohi, Mohamad Reza; Tajik, Hossein; Farshid, Amir Abbas; Basti, Afshin Akhondzadeh; Hadian, Mojtaba

2011-02-01

206

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.

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

2013-01-01

207

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

208

Jack bean urease alters serotonin-induced effects on Rhodnius prolixus anterior midgut.  

PubMed

Urease isoforms from jack bean seeds are toxic to insects, and this entomotoxic effect is mostly due to the release of a peptide by insect digestive enzymes. We previously demonstrated that jack bean urease (JBU) has antidiuretic effects on Rhodnius prolixus Malpighian tubules, decreasing the serotonin-stimulated secretion of fluid. Now, we evaluate the toxicity of the intact JBU and its effect on R. prolixus anterior midgut, to further elucidate the mechanism of action of JBU in insects. JBU decreases the serotonin-induced fluid transport by the anterior midgut in vitro when injected into the lumen. A decrease in the levels of cAMP is observed in tissues treated with JBU (in the presence of serotonin). JBU also causes a dose-dependent increase in the frequency of serotonin-induced contractions in the anterior midgut, but does not alter the frequency of spontaneous contractions. The cyclooxygenase inhibitor indomethacin and the prostaglandin antagonist AH6809 block JBU's potentiation of serotonin-induced contractions, indicating that prostaglandins might act as second messengers for JBU action. Prostaglandin E(2) (PGE(2)) increases the frequency of serotonin-induced contractions, again supporting the role of prostaglandins as second messengers for JBU action. JBU and PGE(2) increase cGMP levels in the anterior midgut, indicating that this molecule might also be part of the JBU pathway. PMID:20223243

Stanisçuaski, F; Te Brugge, V; Carlini, C R; Orchard, I

2010-09-01

209

Kinetics and mechanism study of competitive inhibition of jack-bean urease by baicalin.  

PubMed

Baicalin (BA) is the principal component of Radix Scutellariae responsible for its pharmacological activity. In this study, kinetics and mechanism of inhibition by BA against jack-bean urease were investigated for its therapeutic potential. It was revealed that the IC?? of BA against jack-bean urease was 2.74 ± 0.51 mM, which was proved to be a competitive and concentration-dependent inhibition with slow-binding progress curves. The rapid formation of initial BA-urease complex with an inhibition constant of K(i) = 3.89 × 10?³?mM was followed by a slow isomerization into the final complex with an overall inhibition constant of K(i)* = 1.47 × 10???mM. High effectiveness of thiol protectors against BA inhibition indicated that the strategic role of the active-site sulfhydryl group of the urease was involved in the blocking process. Moreover, the inhibition of BA was proved to be reversible due to the fact that urease could be reactivated by dithiothreitol but not reactant dilution. Molecular docking assay suggested that BA made contacts with the important activating sulfhydryl group Cys-592 residues and restricted the mobility of the active-site flap. Taken together, it could be deduced that BA was a competitive inhibitor targeting thiol groups of urease in a slow-binding manner both reversibly and concentration-dependently, serving as a promising urease inhibitor for treatments on urease-related diseases. PMID:24198731

Tan, Lirong; Su, Jiyan; Wu, Dianwei; Yu, Xiaodan; Su, Zuqing; He, Jingjin; Wu, Xiaoli; Kong, Songzhi; Lai, Xiaoping; Lin, Ji; Su, Ziren

2013-01-01

210

Kinetics and Mechanism Study of Competitive Inhibition of Jack-Bean Urease by Baicalin  

PubMed Central

Baicalin (BA) is the principal component of Radix Scutellariae responsible for its pharmacological activity. In this study, kinetics and mechanism of inhibition by BA against jack-bean urease were investigated for its therapeutic potential. It was revealed that the IC50 of BA against jack-bean urease was 2.74 ± 0.51?mM, which was proved to be a competitive and concentration-dependent inhibition with slow-binding progress curves. The rapid formation of initial BA-urease complex with an inhibition constant of Ki = 3.89 × 10?3?mM was followed by a slow isomerization into the final complex with an overall inhibition constant of Ki* = 1.47 × 10?4?mM. High effectiveness of thiol protectors against BA inhibition indicated that the strategic role of the active-site sulfhydryl group of the urease was involved in the blocking process. Moreover, the inhibition of BA was proved to be reversible due to the fact that urease could be reactivated by dithiothreitol but not reactant dilution. Molecular docking assay suggested that BA made contacts with the important activating sulfhydryl group Cys-592 residues and restricted the mobility of the active-site flap. Taken together, it could be deduced that BA was a competitive inhibitor targeting thiol groups of urease in a slow-binding manner both reversibly and concentration-dependently, serving as a promising urease inhibitor for treatments on urease-related diseases.

Tan, Lirong; Su, Jiyan; Wu, Dianwei; Yu, Xiaodan; Su, Zuqing; Wu, Xiaoli; Kong, Songzhi; Lai, Xiaoping; Lin, Ji; Su, Ziren

2013-01-01

211

Multistate unfolding of ?-mannosidase from Canavalia ensiformis (Jack Bean): evidence for the thermostable molten globule.  

PubMed

The relevance of partially ordered states of proteins (such as the molten-globule state) in cellular processes is beginning to be understood. We examined the conformational transitions in a multimeric and high molecular weight class II ?-mannosidase from Canavalia ensiformis (Jack Bean) (Jb?-man) utilizing intrinsic fluorescence, solute quenching, hydrophobic dye binding, size exclusion chromatography and circular dichroism (CD) spectroscopy for the protein in presence of Guanidine hydrochloride (GdnHCl). The decomposition analysis of the protein spectra obtained during unfolding showed progressive appearance of class S, I, II and III trp. The parameter A and spectral center of mass showed multi state unfolding of the protein and phase diagram analysis revealed formation of an intermediate of Jb?-man in the vicinity of 1 M GdnHCl. The intermediate exhibited compact secondary and distorted tertiary structure with exposed hydrophobic amino acids on the surface, indicating the molten-globule nature. The dissociation, partial unfolding and aggregation of Jb?-man occurred simultaneously during chemical denaturation. The molten-globule possessed slightly higher hydrodynamic radius, perturbance in the structure up to 60 °C and stability of the structure up to 80 °C unlike the native Jack Bean ?-mannosidase. The modes of chemical and thermal denaturation of the native protein were different. The solute quenching parameters confirmed the altered confirmation of the intermediate. Taken together, our results constitute one of the early reports of formation of GdnHCl induced molten globule in a class II ?-mannosidase. PMID:21087596

Kumar, Avinash; Gaikwad, Sushama M

2010-12-17

212

Mobile offshore, self-elevating (jack-up) unit leg/hull rigidification system  

SciTech Connect

A jack-up rig unit for offshore use is described comprising: at least one leg with a set of rack teeth fixedly connected thereto and disposed at least generally in a vertical direction along at least a substantial portion of the leg length; a floatable hull supportable above the water line on the leg(s); rack chock means carried by the hull for each of the leg(s) for rigidly locking the leg(s) to the hull for rigidification of the hull and leg(s) together without introducing any substantial bending movements in the leg(s), the rack chock means including as a part thereof laterally movable teeth engaging means for rigidly interdigitating with in locking, mating engagement the rack teeth of its respective leg in it rigidification disposition but laterally movable with respect to the rack teeth out of any engagement with the rack teeth when it is desired to jack the leg(s) up and down.

Goldman, J.L.; Michael, W.H.; Breeden, J.O.R.

1988-02-02

213

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

214

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.

Khani, Abbas; Asghari, Javad

2012-01-01

215

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

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 LC(50) 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 (LC(50) = 10.02 and 13.05 µl/L air, respectively), the oil of P. gnaphalodes revealed poor activity against the insect (LC(50) = 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

216

Establishment of an infectious RNA transcription system for Striped jack nervous necrosis virus, the type species of the betanodaviruses  

Microsoft Academic Search

A system has been established to produce infectious RNA transcripts for Striped jack nervous necrosis virus (SJNNV), the type species of the betanodaviruses, which infect fish. An enzymological analysis suggested that both RNA1 and RNA2 of SJNNV have a 5« cap. Both RNAs were largely resistant to 3« polyadenylation and ligation, suggesting the presence of an interfering 3« structure, while

Tokinori Iwamoto; Kazuyuki Mise; Koh-ichiro Mori; Misao Arimoto; Toshihiro Nakai

217

Sequence of the non-structural protein gene encoded by RNA1 of striped jack nervous necrosis virus  

Microsoft Academic Search

Striped jack nervous necrosis virus (SJNNV), the causative agent of viral nervous necrosis in marine fish, is a member of the family Nodaviridae whose genome consists of two positive-sense RNA mol- ecules encapsidated in a single virion. In this study, the nucleotide sequence of SJNNV RNA1 was de- termined. The SJNNV RNA1 was 3081 bases long and contained a single

Takahiro Nagai; Toyohiko Nishizawa

218

Advances in the three-dimensional fluid–structure–soil interaction analysis of offshore jack-up structures  

Microsoft Academic Search

The operation of mobile jack-up drilling rigs in harsher ocean environments requires enhanced understanding of their behaviour in storm loading conditions and suitable numerical simulation tools for the assessment of their suitability for a particular site. This paper introduces the numerical program SOS_3D, which incorporates appropriate models for the three components of the structure, the soil and the environmental loading

B. Bienen; M. J. Cassidy

2006-01-01

219

Characterizing the physical and genetic structure of the lodgepole pine x 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.

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

2012-01-01

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

...connect the existing Jack Rabbit Substation located near Four Corners...Bozeman, Montana, to a new substation near Big Sky Meadow Village...call the Federal Information Relay Service (FIRS) at 1-800-877-8339...transmission line segment or substation element). In the...

2010-06-08

221

Effects of heat treatments and germination on trypsin inhibitor activity and polyphenols in jack bean ( Canavalia ensiformis L. DC)  

Microsoft Academic Search

The application of dry heat to seeds and meal was not effective in inactivating the TI and reducing the polyphenol content. Soaking for 24 h followed by cooking for 20 min, was equally effective in destroying the TI activity. Germination of jack bean seeds for 40 h decreased the levels of TI and polyphenols by 31% and 35%, respectively.

V. S. Babar; J. K. Chavan; S. S. Kadam

1988-01-01

222

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

223

Results of a jack-up measurement programme in the North Sea and their comparison with the structural analysis  

Microsoft Academic Search

Santa Fe International Corporation owns and operates four deep water harsh environment jack-up drilling units in the North Sea. The capacity of such units to resist the maximum winter storm environment in this region is a hotly debated topic within the offshore engineering community. This debate is fuelled in large part by uncertainty in our ability to predict accurately a

R. W. P. Stonor; X. Wu

1996-01-01

224

Kinetics and mechanism of jack bean urease inhibition by Hg2+  

PubMed Central

Background Jack bean urease (EC 3.5.1.5) is a metalloenzyme, which catalyzes the hydrolysis of urea to produce ammonia and carbon dioxide. The heavy metal ions are common inhibitors to control the rate of the enzymatic urea hydrolysis, which take the Hg2+ as the representative. Hg2+ affects the enzyme activity causing loss of the biological function of the enzyme, which threatens the survival of many microorganism and plants. However, inhibitory kinetics of urease by the low concentration Hg2+ has not been explored fully. In this study, the inhibitory effect of the low concentration Hg2+ on jack bean urease was investigated in order to elucidate the mechanism of Hg2+ inhibition. Results According to the kinetic parameters for the enzyme obtained from Lineweaver–Burk plot, it is shown that the Km is equal to 4.6±0.3 mM and Vm is equal to 29.8±1.7 ?mol NH3/min mg. The results show that the inhibition of jack bean urease by Hg2+ at low concentration is a reversible reaction. Equilibrium constants have been determined for Hg2+ binding with the enzyme or the enzyme-substrate complexes (Ki =0.012 ?M). The results show that the Hg2+ is a noncompetitive inhibitor. In addition, the kinetics of enzyme inhibition by the low concentration Hg2+ has been studied using the kinetic method of the substrate reaction. The results suggest that the enzyme first reversibly and quickly binds Hg2+ and then undergoes a slow reversible course to inactivation. Furthermore, the rate constant of the forward reactions (k+0) is much larger than the rate constant of the reverse reactions (k-0). By combining with the fact that the enzyme activity is almost completely lost at high concentration, the enzyme is completely inactivated when the Hg2+ concentration is high enough. Conclusions These results suggest that Hg2+ has great impacts on the urease activity and the established inhibition kinetics model is suitable.

2012-01-01

225

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

226

16?-Hydroxycleroda-3,13 (14)Z-dien-15,16-olide from Polyalthia longifolia: a safe and orally active antileishmanial agent  

PubMed Central

Background and purpose: New antileishmanials from natural products are urgently needed due to the emergence of drug resistance complicated by severe cytotoxic effects. 16?-Hydroxycleroda-3,13 (14)Z-dien-15,16-olide (Compound 1) from Polyalthia longifolia was found to be a potential antileishmanial and non-cytotoxic, as evidenced by long-term survival (>6 months) of treated animals. This prompted us to determine its target and, using molecular modelling, identify the interactions responsible for its specific antileishmanial activity. Experimental approach: In vitro activity of compound was assessed using intracellular transgenic green fluorescent protein-stably expressed Leishmania donovani parasites. In vivo activity and survival of animals post-treatment were evaluated in L. donovani-infected hamsters. Known property of clerodane diterpenes as potent human DNA topoisomerase inhibitors led us to evaluate the inhibition of recombinant L. donovani topoisomerase I using relaxation assay. Mode of cell death induced by Compound 1 was assessed by phosphotidylserine exposure post-treatment. Molecular modelling studies were conducted with DNA topoisomerase I to identify the binding interactions responsible for its activity. Key results: Bioassay-guided fractionation led to isolation of Compound 1 as a non-cytotoxic, orally active antileishmanial. Compound 1 inhibited recombinant DNA topoisomerase I which, ultimately, induced apoptosis. Molecular docking studies indicated that five strong hydrogen-bonding interactions and hydrophobic interactions of Compound 1 with L. donovani DNA-topoisomerase are responsible for its antileishmanial activity. Conclusions and implications: The data reveal Compound 1 is a potent and safe antileishmanial. The study further exploited the structural determinants responsible for its non-cytotoxic and potent activity, to raise the feasibility of specifically targeting the target enzyme responsible for its activity through rational drug design.

Misra, Pragya; Sashidhara, Koneni V; Singh, Suriya Pratap; Kumar, Awanish; Gupta, Reema; Chaudhaery, Shailendra S; Gupta, Souvik Sen; Majumder, HK; Saxena, Anil K; Dube, Anuradha

2010-01-01

227

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

228

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

229

Field and electroantennogram responses to sex pheromone optical isomers by monophagous jack pine sawflies (Hymenoptera: Diprionidae).  

PubMed

Several species of monophagous jack pine sawflies (Hymenoptera: Diprionidae) were tested in the field and by electroantennograms (EAG) for activity toward the optical isomers of a pine sawfly sex pheromone, the acetate and propionate esters of 3,7-dimethylpentadecan-2-ol.Neodiprion rugifrons andNeodiprion dubiosus were attracted to a mixture of the propionate esters of the 2S,3R,7R and 2S,3R,7S isomers, whereasNeodiprion swainei was attracted to the 2S,3S,7S propionate isomer. Samples containing the 2S,3R,7S propionate isomer elicited the strongest EAG responses in these three species andNeodiprion nigroscutum. The 2S,3S,7S propionate isomer was equally active (EAG) in the case ofN. swainei. PMID:24318843

Kraemer, M E; Coppel, H C; Matsumura, F; Kikukawa, T; Benoit, P

1984-07-01

230

PIXE analysis of urease isoenzymes isolated from Canavalia ensiformis (jack bean) seeds  

NASA Astrophysics Data System (ADS)

The main goal of this work was to perform a stoichiometric analysis of metals, in particular Ni and Zn, in two isoforms of urease isolated from jack bean seeds. The urease isoforms were separated by immobilized metal affinity chromatography. The samples were prepared for PIXE by acetone precipitation of the proteins, which were deposited onto regenerated cellulose acetate membranes by filtration. The resulting mass of the samples was of the order of 0.20 mg (dry weight). The results show that urease contains two equivalents of Ni per 90 kDa monomer, in agreement with the results reported in the literature. For canatoxin, the other urease isoform, the presence of one equivalent of Zn per monomer was observed, besides Ni, previously detected by atomic absorption spectrometry as one equivalent per 90 kDa. Problems and further improvements concerning the preparation of the samples are discussed.

Follmer, C.; Carlini, C. R.; Yoneama, M.-L.; Dias, J. F.

2002-04-01

231

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

232

Soil fertility effects on growth, nodulation, nitrogenase and seed lectin components of Jack bean (Canavalia ensiformis (L.) D.C.)  

Microsoft Academic Search

Jack bean (Canavalia ensiformis (L.) D.C.) has been utilized by mankind for over 2,000 years. This high protein, large?seed legume is tolerant of unfavorable soil conditions, drought and adverse climate. However, growth and yield within the neotropical regions are influenced by soil productivity. The objective of this study was to determine effects of soil fertility treatments on growth, seed (bean)

J. Q. Lynd; T. R. Ansman

1989-01-01

233

A parametric study of the non-linear dynamic behaviour of an offshore jack-up unit  

Microsoft Academic Search

The dynamic response of an offshore jack-up unit to environmental loads has been investigated using a two-dimensional, non-linear finite element model. The model includes realistic representations of the wave loading, the geometric non-linearities of the rig legs and the complex non-linear effects of combined loads on the spudcan footings. Results are presented from a parametric study in which a typical

Martin S Williams; Richard S. G Thompson; Guy T Houlsby

1999-01-01

234

Profiles of lipid components, fatty acid distributions of triacylglycerols and phospholipids in Jack beans (Canavalia gladiata DC.).  

PubMed

Endogenous tocopherols in extracted lipids from Jack beans (Canavalia gladiata DC.) were determined by high-performance liquid chromatography (HPLC), and were investigated in relation to the fatty acids (FA) distribution of triacylgycerols (TAG) and phospholipids (PL). The dominant tocopherols were (?)-tocopherol (78.9-96.5mg%) and (?)-tocopherol (42.1-56.1mg%) with much smaller amounts of (?)-tocopherol (1.1-1.3mg%). The lipids of Jack beans comprised mainly TAG (34.6-38.6 wt.%) and PL (54.8-57.4 wt.%), and other components were also detected in minor proportions (0.3-3.8 wt.%). The PL components included phosphatidyl choline (46.2-48.7 wt.%), phosphatidyl inositol (23.4-29.6 wt.%) and phosphatidyl ethanolamine (18.5-21.2 wt.%). Comparison of these different beans showed, with a few exceptions, no significant differences (P>0.05) in FA distribution. The FA distribution of TAG among the five beans was evident in the Jack beans: unsaturated FA (93.3-95.3 wt.%) were predominantly concentrated at the sn-2 position and saturated FA (33.6-34.4 wt.%) primarily occupying the sn-1 position or sn-3 position. The results obtained from this work would provide useful information to both producers and consumers for manufacturing functional foods or beverages in Japan and elsewhere. PMID:23122131

Yoshida, Hiromi; Yoshida, Naoko; Kuriyama, Isoko; Tomiyama-Sakamoto, Yuka; Mizushina, Yoshiyuki

2013-01-15

235

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

236

Antimicrobial and antioxidative activities of bioactive constituents from Hydnophytum formicarum Jack.  

PubMed

Hydnophytum formicarum Jack. (Rubiaceae) is a medicinal plant whose tubers possesses cardiovascular, anti-inflammatory and antiparasitic effects and have been used for the treatment of hepatitis, rheumatism and diarrhea. Herein we report the isolation of its active constituents and the testing of their antimicrobial activity against 27 strains of microorganisms using an agar dilution method and of their antioxidative activity using the DPPH and SOD assays. The results show that the crude hexane, dichloromethane, ethylacetate and methanol extracts exert such activities. Particularly, the crude ethyl acetate extract exhibits antigrowth activity against many Gram-positive and Gram-negative bacteria with MIC 256 microg/mL. Shewanella putrefaciens ATCC 8671 is completely inhibited at a lower MIC (128 microg/mL). Interestingly, Corynebacterium diphtheriae NCTC10356 is inhibited by all the tested extracts. Significantly, the ethyl acetate extract is also the most potent antioxidant, showing 83.31% radical scavenging activity with IC50 8.40 microg/mL in the DPPH assay. The other extracts display weak to moderate antioxidative activities, ranging from 28.60-56.80% radical scavenging. The SOD assay shows that methanol extract exhibits the highest activity (74.19% inhibition of superoxide radical). The dichloromethane and ethyl acetate extracts display comparable SOD activity. The promising bioactivities of the crude ethyl acetate extract guided the first isolation of bioactive flavonoid and phenolic compounds: isoliquiritigenin (2), protocatechualdehyde(3), butin (4) and butein (5) from this species. Their structures have been fully established by 1D and 2D NMR. In addition, stigmasterol was isolated from the crude hexane and dichloromethane extracts. The antimicrobial and cytotoxic activities of compounds 3-5 were evaluated. The tested compounds were inactive against HuCCA-1 and KB cell lines,showing ED50> 10 microg/mL. Protocatechualdehyde (3) completely inhibits the growth of Plesiomonas shigelloides with MIC Jack. can serve as a new source enriched with potent antioxidative and antimicrobial agents. PMID:18463592

Prachayasittikul, Supaluk; Buraparuangsang, Prasit; Worachartcheewan, Apilak; Isarankura-Na-Ayudhya, Chartchalerm; Ruchirawat, Somsak; Prachayasittikul, Virapong

2008-01-01

237

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

238

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

239

Development of observational learning during school formation in jack mackerel Trachurus japonicus juveniles.  

PubMed

We assessed whether the development of observational learning in jack mackerel Trachurus japonicus juveniles corresponds with that of their schooling behaviour. Schooling behaviour was quantitatively analyzed by nearest neighbour distance and separation angle in two size classes of fish, 20-mm and 40-mm in body length. Observer and non-observer fish with matching sizes were conditioned to pellets by temporarily stopping aeration. Observer fish were provided with five observation trials of other individuals feeding near an air stone when aeration was stopped. After the observation trial, fish were conditioned to pellets with the stop of aeration, and then the learning process was evaluated by the increase in the association with the feeding area when aeration was stopped. In 20-mm fish, which were at an immature stage of schooling behaviour, there was no difference in the learning process between observer and non-observer fish. In contrast, 40-mm fish were confirmed to have a well-developed schooling behaviour, and the observer learnt the feeding area more efficiently than the non-observer. This study provides evidence that observational learning develops along with the development of the social interaction. PMID:24220796

Takahashi, Kohji; Masuda, Reiji; Yamashita, Yoh

2014-03-01

240

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

241

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

242

California condor associated with spruce-jack pine woodland in the late Pleistocene of New York  

NASA Astrophysics Data System (ADS)

A humerus, coracoid, and pedal phalanx of the California Condor, Gymnogyps californianus, were recovered from the Hiscock Site in western New York, in an inorganic stratum containing wood that is 11,000 radiocarbon years old. Associated vertebrates include mastodont, wapiti, and caribou. Pollen and plant macrofossils from the sediments indicate a spruce-jack pine woodland and a local, herb-dominated wetland community. Historic records (all from western North America) and previous late Pleistocene fossils of the California Condor are associated mainly with warm-temperate climates and floras. The New York fossils show that this bird was able to live in a colder climate and in a boreal, coniferous setting at a time when appropriate food (large mammal carrion) was available. The California Condor, which survives only in captivity, has suffered a greater reduction in geographical range than previously suspected. Much of this reduction in range probably occurred ca. 11,000 yr B.P. when the extinction many North American large mammals resulted in severely reduced availability of food for the California Condor and other large scavenging birds.

Steadman, David W.; Miller, Norton G.

1987-11-01

243

Biochemical and X-Ray Diffraction Analysis of Concanavalin B Crystals from Jack Bean 1  

PubMed Central

Parallel biochemical and crystallographic studies have been carried out on the protein concanavalin B from Jack Bean (Canavalis ensiformis). The studies show the protein to be a monomer of 33,000 daltons with unexceptional amino acid composition and no covalently bound carbohydrate. The molecule contains a single, firmly bound zinc ion and we present evidence that the protein specifically binds nucleotide coenzymes including at least NADPH and flavin mononucleotide. An electron density map of the concanavalin B crystals (space group P61, a = b = 80.9 Å, c = 102.2 Å) has been calculated from phases based on six isomorphous heavy atom derivatives. A description of the structure of the protein based on the 5.0 Å resolution x-ray diffraction study is provided. The structure appears to contain a substantial amount of ?-helix as well as an extensive ?-sheet and these are organized into two domains of unequal size. The position of the bound zinc is indicated by anomalous difference Fouriers and the nucleotide binding site by conventional difference Fourier maps. Images Fig. 1 Fig. 2 Fig. 3 Fig. 5 Fig. 6 Fig. 7 Fig. 8 Fig. 9 Fig. 10 Fig. 11

Morrison, Robert; Delozier, Gregory; Robinson, Lindsay; McPherson, Alexander

1984-01-01

244

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

245

Pollination ecology and reproductive success in Jack-in-the-pulpit (Arisaema triphyllum) in Québec (Canada).  

PubMed

Pollination ecology and reproductive success of Jack-in-the-pulpit (Arisaema triphyllum) were studied in two natural populations in Québec, Canada. Individual A. triphyllum plants can be of three types: male, female or bisexual. In both populations studied, the presence of bisexual inflorescences was not negligible (13%), where 'female' and 'male' bisexual plants were categorised according to the relative number of stamens and ovaries. 'Male bisexual' plants produce only pollen and 'female bisexual' plants produce only fruit. Hence, A. triphyllum is a true dioecious plant, as each plant only reproduces through either the male or the female function. 'Female bisexual' plants were equivalent to female plants in terms of visitation rate by insects, fructification rate and production of berries and seeds. Neither agamospermy in female plants nor self-pollination in 'female bisexual' plants was found, thus A. triphyllum relies on insects for cross-pollination. Despite the long flowering cycle, a low visitation rate was documented: only 20-40% of inflorescences were visited, according to gender, by a mean of 1.5 insects. In this study, Mycetophilidae represented the most generically diversified and abundant family, as well as the most efficient insect pollinator, especially the genera Docosia and Mycetophila. PMID:20653899

Barriault, I; Barabé, D; Cloutier, L; Gibernau, M

2010-01-01

246

Building a foundation for suicide prevention: the contributions of Jack C. Smith.  

PubMed

Among his many other accomplishments, Jack C. Smith nurtured the early development of efforts by the Centers for Disease Control and Prevention (CDC) to address suicide as a public health problem. Smith's vision was to achieve suicide prevention through epidemiology, and his vision shaped the emergence of suicide as a public health issue. With his typical enthusiasm and inherent ability to insinuate himself into critical social networks, Smith spearheaded CDC's initial suicide surveillance activities and established strong partnerships between CDC and the National Institute of Mental Health (NIMH) and the American Association of Suicidology (AAS). These surveillance activities and relationships were the foundation on which subsequent research and programmatic activities addressing suicide as a public health problem were built at CDC. In this paper we document Smith's role in the development of the public health approach to suicide prevention. We also articulate the conceptual basis for a public health approach to suicide and discuss future directions for public health in the prevention of suicide and suicidal behavior. While Smith also made important contributions to development of CDC efforts to address homicide, his special interest was suicide; therefore, this article will emphasize his contributions to this area. PMID:10863127

Mercy, J A; Rosenberg, M L

2000-07-01

247

Inactivation of jack bean urease by scutellarin: elucidation of inhibitory efficacy, kinetics and mechanism.  

PubMed

In the present study, the inactivation effect of scutellarin (SL) on jack bean urease was investigated to elucidate the inhibitory potency, kinetics and mechanism of inhibition. It was revealed that SL acted as a concentration- and time-dependent inactivator of urease characteristic of slow-binding inhibition with an IC50 of 1.35±0.15 mM. The rapid formation of the initial SL-urease complex with an inhibition constant of Ki=5.37×10(-2) mM was followed by a slow isomerization into the final complex with the overall inhibition constant of Ki*=3.49×10(-3) mM. High effectiveness of thiol protectors, such as L-cysteine (L-cys), 2-mercaptoethanol (2-ME) and dithiothreitol (DTT) significantly slowed down the rate of inactivation, indicating the strategic role of the active site sulfhydryl group in the blocking process. While the insignificant protection by boric acid and fluoride from the inactivation further confirmed that the active site cysteine should be obligatory for urease inhibition, which was also rationalized by the molecular docking study. The inhibition of SL on urease proved to be reversible since SL-blocked urease could be reactivated by DTT application and multidilution. The results obtained indicated that urease inactivation resulted from the reaction between SL and the sulfhydryl group. PMID:23978581

Wu, Dian-Wei; Yu, Xiao-Dan; Xie, Jian-Hui; Su, Zu-Qing; Su, Ji-Yan; Tan, Li-Rong; Huang, Xiao-Qi; Chen, Jian-Nan; Su, Zi-Ren

2013-12-01

248

Jack bean ?-mannosidase: amino acid sequencing and N-glycosylation analysis of a valuable glycomics tool.  

PubMed

Jack bean (Canavalia ensiformis) seeds contain several biologically important proteins among which ?-mannosidase (EC 3.2.1.24) has been purified, its biochemical properties studied and widely used in glycan analysis. In the present study, we have used the purified enzyme and derived its amino acid sequence covering both the known subunits (molecular mass of ?66,000 and ?44,000 Da) hitherto not known in its entirety. Peptide de novo sequencing and structural elucidation of N-glycopeptides obtained either directly from proteolytic digestion or after zwitterionic hydrophilic interaction liquid chromatography solid phase extraction-based separation were performed by use of nanoelectrospray ionization quadrupole time-of-flight mass spectrometry and low-energy collision-induced dissociation experiments. De novo sequencing provided new insights into the disulfide linkage organization, intersection of subunits and complete N-glycan structures along with site specificities. The primary sequence suggests that the enzyme belongs to glycosyl hydrolase family 38 and the N-glycan sequence analysis revealed high-mannose oligosaccharides, which were found to be heterogeneous with varying number of hexoses viz, Man8-9GlcNAc2 and Glc1Man9GlcNAc2 in an evolutionarily conserved N-glycosylation site. This site with two proximal cysteines is present in all the acidic ?-mannosidases reported so far in eukaryotes. Further, a truncated paucimannose type was identified to be lacking terminal two mannose, Man1(Xyl)GlcNAc2 (Fuc). PMID:24295789

Gnanesh Kumar, B S; Pohlentz, Gottfried; Schulte, Mona; Mormann, Michael; Siva Kumar, Nadimpalli

2014-03-01

249

Morphological Phylogenetic Analysis of Seven Varieties of Ficus deltoidea Jack from the Malay Peninsula of Malaysia  

PubMed Central

This study is the first report to suggest a morphological phylogenetic framework for the seven varieties of Ficus deltoidea Jack (Ficus: Moraceae) from the Malay Peninsula of Malaysia. Several molecular-based classifications on the genus Ficus had been proposed, but neither had discussed the relationship between seven varieties of F. deltoidea to its allies nor within the varieties. The relationship between seven varieties of F. deltoidea is still debated due to the extreme morphological variabilities and ambiguous boundaries between taxa. Thus, the correct identification of these varieties is important as several morphological characters are variety-specific. To test the monophyly and further resolved the relationship in F. deltoidea, a morphological phylogenetic analysis was conducted based on herbarium specimens representing the seven varieties of F. deltoidea that were collected from the Malay Peninsula of Malaysia, by using related species of the genus Ficus; F. grossularioides, F. ischnopoda and F. oleifolia as the outgroups. Parsimony and neighbour-joining analyses indicated that F. deltoidea is monophyletic, in that the seven varieties of F. deltoidea nested into two clades; clade subspecies deltoidea (var. deltoidea, var. bilobata, var. angustifolia, var. kunstleri and var. trengganuensis) and clade subspecies motleyana (var. intermedia and var. motleyana).

Fatihah, Hasan N. N.; Mat, Nashriyah; Zaimah, Abdul R. N.; Zuhailah, Mazlan N.; Norhaslinda, Haron; Khairil, Mahmud; Ghani, Abdul Y.; Ali, Abdul M.

2012-01-01

250

Transcriptome resources and functional characterization of monoterpene synthases for two host species of the mountain pine beetle, lodgepole pine (Pinus contorta) and jack pine (Pinus banksiana)  

PubMed Central

Background The mountain pine beetle (MPB, Dendroctonus ponderosae) epidemic has affected lodgepole pine (Pinus contorta) across an area of more than 18 million hectares of pine forests in western Canada, and is a threat to the boreal jack pine (Pinus banksiana) forest. Defence of pines against MPB and associated fungal pathogens, as well as other pests, involves oleoresin monoterpenes, which are biosynthesized by families of terpene synthases (TPSs). Volatile monoterpenes also serve as host recognition cues for MPB and as precursors for MPB pheromones. The genes responsible for terpene biosynthesis in jack pine and lodgepole pine were previously unknown. Results We report the generation and quality assessment of assembled transcriptome resources for lodgepole pine and jack pine using Sanger, Roche 454, and Illumina sequencing technologies. Assemblies revealed transcripts for approximately 20,000 - 30,000 genes from each species and assembly analyses led to the identification of candidate full-length prenyl transferase, TPS, and P450 genes of oleoresin biosynthesis. We cloned and functionally characterized, via expression of recombinant proteins in E. coli, nine different jack pine and eight different lodgepole pine mono-TPSs. The newly identified lodgepole pine and jack pine mono-TPSs include (+)-?-pinene synthases, (-)-?-pinene synthases, (-)-?-pinene synthases, (+)-3-carene synthases, and (-)-?-phellandrene synthases from each of the two species. Conclusion In the absence of genome sequences, transcriptome assemblies are important for defence gene discovery in lodgepole pine and jack pine, as demonstrated here for the terpenoid pathway genes. The product profiles of the functionally annotated mono-TPSs described here can account for the major monoterpene metabolites identified in lodgepole pine and jack pine.

2013-01-01

251

Facile synthesis of highly branched jacks-like ZnO nanorods and their applications in dye-sensitized solar cells  

SciTech Connect

Graphical abstract: -- Abstract: Highly branched, jacks-like ZnO nanorods architecture were explored as a photoanode in dye-sensitized solar cells, and their photovoltaic performance was compared with that of branch-free ZnO nanorods photoanodes. The highly branched network and large pores of the jacks-like ZnO nanorods electrodes enhances the charge transport, and electrolyte penetration. Thus, the jacks-like ZnO nanorods DSSCs render a higher conversion efficiency of {eta} = 1.82% (V{sub oc} = 0.59 V, J{sub sc} = 5.52 mA cm{sup -2}) than that of the branch-free ZnO nanorods electrodes ({eta} = 1.08%, V{sub oc} = 0.49 V, J{sub sc} = 4.02 mA cm{sup -2}). The incident photon-to-current conversion efficiency measurements reveal that the jacks-like ZnO nanorods DSSCs exhibit higher internal quantum efficiency ({approx}59.1%) than do the branch-free ZnO nanorods DSSC ({approx}52.5%). The charge transfer resistances at the ZnO/dye/electrolyte interfaces investigated using electrochemical impedance spectroscopy showed that the jacks-like ZnO nanorods DSSC had high charge transfer resistance and a slightly longer electron lifetime, thus improving the solar-cell performance.

Sudhagar, P. [Center for Next Generation Dye-sensitized Solar Cells, WCU Program Department of Energy Engineering, Hanyang University, Seongdong-gu, Seoul- 133 791 (Korea, Republic of)] [Center for Next Generation Dye-sensitized Solar Cells, WCU Program Department of Energy Engineering, Hanyang University, Seongdong-gu, Seoul- 133 791 (Korea, Republic of); Kumar, R. Saravana [R and D Department of Physics, Kongunadu Arts and Science College, Coimbatore 641 029, Tamilnadu (India)] [R and D Department of Physics, Kongunadu Arts and Science College, Coimbatore 641 029, Tamilnadu (India); Jung, June Hyuk; Cho, Woohyung [Center for Next Generation Dye-sensitized Solar Cells, WCU Program Department of Energy Engineering, Hanyang University, Seongdong-gu, Seoul- 133 791 (Korea, Republic of)] [Center for Next Generation Dye-sensitized Solar Cells, WCU Program Department of Energy Engineering, Hanyang University, Seongdong-gu, Seoul- 133 791 (Korea, Republic of); Sathyamoorthy, R. [R and D Department of Physics, Kongunadu Arts and Science College, Coimbatore 641 029, Tamilnadu (India)] [R and D Department of Physics, Kongunadu Arts and Science College, Coimbatore 641 029, Tamilnadu (India); Won, Jongok [Department of Chemistry, Sejong University, Gwangjin-gu, Seoul 143-747 (Korea, Republic of)] [Department of Chemistry, Sejong University, Gwangjin-gu, Seoul 143-747 (Korea, Republic of); Kang, Yong Soo, E-mail: kangys@hanyang.ac.kr [Center for Next Generation Dye-sensitized Solar Cells, WCU Program Department of Energy Engineering, Hanyang University, Seongdong-gu, Seoul- 133 791 (Korea, Republic of)

2011-09-15

252

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

253

An intrinsically disordered protein, CP12: jack of all trades and master of the Calvin cycle.  

PubMed

Many proteins contain disordered regions under physiological conditions and lack specific three-dimensional structure. These are referred to as IDPs (intrinsically disordered proteins). CP12 is a chloroplast protein of approximately 80 amino acids and has a molecular mass of approximately 8.2-8.5 kDa. It is enriched in charged amino acids and has a small number of hydrophobic residues. It has a high proportion of disorder-promoting residues, but has at least two (often four) cysteine residues forming one (or two) disulfide bridge(s) under oxidizing conditions that confers some order. However, CP12 behaves like an IDP. It appears to be universally distributed in oxygenic photosynthetic organisms and has recently been detected in a cyanophage. The best studied role of CP12 is its regulation of the Calvin cycle responsible for CO2 assimilation. Oxidized CP12 forms a supramolecular complex with two key Calvin cycle enzymes, GAPDH (glyceraldehyde-3-phosphate dehydrogenase) and PRK (phosphoribulokinase), down-regulating their activity. Association-dissociation of this complex, induced by the redox state of CP12, allows the Calvin cycle to be inactive in the dark and active in the light. CP12 is promiscuous and interacts with other enzymes such as aldolase and malate dehydrogenase. It also plays other roles in plant metabolism such as protecting GAPDH from inactivation and scavenging metal ions such as copper and nickel, and it is also linked to stress responses. Thus CP12 seems to be involved in many functions in photosynthetic cells and behaves like a jack of all trades as well as being a master of the Calvin cycle. PMID:22988853

Gontero, Brigitte; Maberly, Stephen C

2012-10-01

254

Fishery of the Green Jack Caranx caballus (Osteichytes: Carangidae) in Las Perlas Archipelago, Pacific Panama.  

PubMed

Green Jacks, Caranx caballus, are distributed along the Eastern Pacific coast. In Panama, C. caballus was heavily fished around Las Perlas Archipelago to sustain local markets until 2007, when the archipelago was declared a marine protected area. This first study in Panama, analyzed a sample of 4 990 individuals from Las Perlas, obtained monthly from June 2005 to June 2006, from landings at the central fish market. Average total length was 36.1 +/- 6.4cm and optimum length 38.9cm. Approximately 68% of fish lengths were within +/-10% of the optimal length but only six (15%) were considered mega-spawners. The von Bertalanffy parameters describe a long-lived and fast growing species, while mortality rates revealed that C. caballus is under high fishing pressure. Standard length at which half of the population is mature was 38.8cm, and the size at which individuals matured massively, 33cm. Only 10-13% of the fish were immature. C. caballus reproduces two to three times per year, with peaks in December, April, and probably September, and recruits to the population at least twice per year. Catch per unit effort (CPUE) was best predicted by minimum annual values of the Multivariate ENSO/LNSO Index (MEI) (R2=0.54). Results show that C. caballus in Pacific Panama is overfished. We recommend the raising of the minimum capture/landing size of this species in order to increase the proportion of mega-spawners in the population and guarantee the sustainability of this resource. PMID:23025097

Mair, James M; Cipriani, Roberto; Guzman, Hector M; Usan, David

2012-09-01

255

Zn uptake, physiological response and stress attenuation in mycorrhizal jack bean growing in soil with increasing Zn concentrations.  

PubMed

The influence of arbuscular mycorrhizal fungi (AMF) inoculation on Canavalia ensiformis growth, nutrient and Zn uptake, and on some physiological parameters in response to increasing soil Zn concentrations was studied. Treatments were applied in seven replicates in a 2 x 4 factorial design, consisting of the inoculation or not with the AMF Glomus etunicatum, and the addition of Zn to soil at the concentrations of 0, 100, 300 and 900 mg kg(-1). AMF inoculation enhanced the accumulation of Zn in tissues and promoted biomass yields and root nodulation. Mycorrhizal plants exhibited relative tolerance to Zn up to 300 mg kg(-1) without exhibiting visual symptoms of toxicity, in contrast to non-mycorrhizal plants which exhibited a significant growth reduction at the same soil Zn concentration. The highest concentration of Zn added to soil was highly toxic to the plants. Leaves of plants grown in high Zn concentration exhibited a Zn-induced proline accumulation and also an increase in soluble amino acid contents; however proline contents were lower in mycorrhizal jack beans. Plants in association or not with the AMF exhibited marked differences in the foliar soluble amino acid profile and composition in response to Zn addition to soil. In general, Zn induced oxidative stress which could be verified by increased lipid peroxidation rates and changes in catalase, ascorbate peroxidase, glutathione reductase and superoxide dismutase activities. In summary, G. etunicatum was able to maintain an efficient symbiosis with jack bean plants in moderately contaminated Zn-soils, improving plant performance under those conditions, which is likely to be due to a combination of physiological and nutritional changes caused by the intimate relation between fungus and plant. The enhanced Zn uptake by AMF inoculated jack bean plants might be of interest for phytoremediation purposes. PMID:19268339

Andrade, Sara A L; Gratão, Priscila L; Schiavinato, Marlene A; Silveira, Adriana P D; Azevedo, Ricardo A; Mazzafera, Paulo

2009-06-01

256

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

257

Automated detection and mapping of crown discolouration caused by jack pine budworm with 2.5 m resolution multispectral imagery  

NASA Astrophysics Data System (ADS)

Jack pine budworm ( Choristoneura pinus pinus (Free.)) is a native insect defoliator of mainly jack pine ( Pinus banksiana Lamb.) in North America east of the Rocky Mountains. Periodic outbreaks of this insect, which generally last two to three years, can cause growth loss and mortality and have an important impact ecologically and economically in terms of timber production and harvest. The jack pine budworm prefers to feed on current year needles. Their characteristic feeding habits cause discolouration or reddening of the canopy. This red colouration is used to map the distribution and intensity of defoliation that has taken place that year (current defoliation). An accurate and consistent map of the distribution and intensity of budworm defoliation (as represented by the red discolouration) at the stand and within stand level is desirable. Automated classification of multispectral imagery, such as is available from airborne and new high resolution satellite systems, was explored as a viable tool for objectively classifying current discolouration. Airborne multispectral imagery was acquired at a 2.5 m resolution with the Multispectral Electro-optical Imaging Sensor (MEIS). It recorded imagery in six nadir looking spectral bands specifically designed to detect discolouration caused by budworm and a near-infrared band viewing forward at 35° was also used. A 2200 nm middle infrared image was acquired with a Daedalus scanner. Training and test areas of different levels of discolouration were created based on field observations and a maximum likelihood supervized classification was used to estimate four classes of discolouration (nil-trace, light, moderate and severe). Good discrimination was achieved with an overall accuracy of 84% for the four discolouration levels. The moderate discolouration class was the poorest at 73%, because of confusion with both the severe and light classes. Accuracy on a stand basis was also good, and regional and within stand discolouration patterns were portrayed well. Only three or four well-placed spectral bands were needed for a good classification. A narrow red band, a near-infrared and short wave infrared band were most useful. A forward looking band did not improve discolouration estimation, but further testing is needed to confirm this result. This method of detecting and classifying discolouration appears to provide a mapping capability useful for conducting jack pine budworm discolouration surveys and integrating this information into decision support systems, forest inventory, growth and yield predictions and the forest management decision-making process.

Leckie, Donald G.; Cloney, Ed; Joyce, Steve P.

2005-05-01

258

Flood magnitude and frequency of Jacks Run at the culvert on U.S. Route 206, Southampton Township, Burlington County, New Jersey  

USGS Publications Warehouse

Flood magnitude and frequency of Jacks Run at the culvert on U.S. Route 206, Southampton Township, New Jersey, were determined by using the rational method. Flood magnitude and frequency estimates, as well as basin characteristics, are included in this report. The 100-year-flood estimate is 29 cubic feet per second.

Barringer, Thomas

1996-01-01

259

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

260

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

261

Effect of chemical modification of histidines on the copper-induced oligomerization of jack bean urease (EC 3.5.1.5)  

Microsoft Academic Search

Aggregation of jack bean urease (JBU) is associated with alterations of its biological properties, notably the ureolytic and entomotoxic activities. We investigated the influence of metals on protein oligomerization and biological properties. Besides protein aggregation, Cu2+ induces inhibition of both ureolytic and insecticidal activities of JBU. Chemical modification of histidine residues in JBU with diethylpyrocarbonate (DEPC) decreases its affinity for

Cristian Follmer; Célia R. Carlini

2005-01-01

262

Purification of urease from jack bean (Canavalia ensiformis) with copper (II) chelated poly(hydroxyethyl methacrylate-N-methacryloyl-(L)-histidine methyl ester) cryogels.  

PubMed

Jack bean (Canavalia ensiformis) is the source of interesting proteins that contribute to modern biochemistry, and urease is the primary of these proteins. Owing to its role and occurrence in nature, urease has become a part of extensive studies. In this study, jack bean urease (JBU) was purified by immobilized metal affinity chromatography using Cu(2+) chelated poly(hydroxyethyl methacrylate-N-methacryloyl-(L)-histidine methyl ester) [PHEMAH-Cu(2+)]-based cryogels. PHEMAH-Cu(2+) cryogel was synthesized and characterized for swelling degree, morphology (by SEM), N-methacryloyl-(L)-histidine methyl ester and Cu(2+) incorporation (by elemental analysis and atomic absorption spectrophotometry). The binding of JBU to PHEMAH-Cu(2+) cryogel was optimized by examining the effect of pH, flow rate and JBU concentration on binding. The maximal binding of JBU was 23.2 mg/dry gram of adsorbent. The maximal binding of JBU extracted from jack bean meal was 67.8 mg/dry gram of adsorbent. The elution of JBU from cryogel column was accomplished by 1.0 M NaCl in 20 mM phosphate buffer (pH 8.0). Molecular weight and purity of JBU from jack bean meal was estimated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. It was observed that JBU could be repeatedly bound and eluted from (PHEMAH)-Cu(2+) cryogel with less than 10% loss in column capacity. PMID:23108614

Tekiner, P?nar; Perçin, I?ik; Ergün, Bahar; Yavuz, Handan; Aksöz, Erol

2012-11-01

263

Global and targeted proteomics in developing jack bean (Canavalia ensiformis) seedlings: an investigation of urease isoforms mobilization in early stages of development.  

PubMed

Jack bean (Canavalia ensiformis) seeds are toxic for insects and the toxicity is due in part to an entomotoxic peptide enzymatically released from ureases in the midgut of susceptible insects. To characterize expression of urease isoforms in jack bean seed, particularly the more abundant urease isoform (JBU), quantitative proteomics was performed. Quiescent through 5-day germinating seeds were analyzed at 1-day intervals using a total proteomics approach (TPA) and also after co-immunoprecipitation (co-IP) with anti-JBU monoclonal antibodies. Jack bean proteins for TPA and co-IP were pre-fractionated by SDS-PAGE, segmented for in-gel trypsin digestion, and analyzed by liquid chromatography coupled to nanospray ionization tandem mass spectrometry (LC-MS/MS). Acquired MS(2) data were searched against a comprehensive plant database and the MEROPS peptidase database, in the absence of a jack bean EST database. Proteins detected in TPA were quantified by label-free spectral counting. A total of 234 and 106 non-redundant proteins were detected in TPA and co-IP, respectively. Mobilization of JBU was observed beginning 3-days after imbibition indicating that the entomotoxic peptide was not formed before this stage. A predicted urease isoform, JBURE-IIb, was detected in the co-IP study. Additionally, 46 plastid proteins, including RuBisCO and plastid ATPase were pulled down with JBU antibodies. These data shed new light on the behavior of urease isoforms during the early stages of plant development. PMID:20978823

Demartini, Diogo Ribeiro; Carlini, Célia Regina; Thelen, Jay J

2011-01-01

264

Anticonvulsive and free radical scavenging actions of two herbs, Uncaria rhynchophylla (Miq) jack and Gastrodia elata Bl., in kainic acid-treated rats  

Microsoft Academic Search

Uncaria rhynchophylla (Miq.) Jack (UR) and Gastrodia elata BI. (GE) are traditional Chinese herbs that are usually used in combination to treat convulsive disorders, such as epilepsy, in China. The aim of this study was to compare the anticonvulsive and free radical scavenging activities of UR alone and UR in combination with GE in rats. For the in vitro studies,

Ching-Liang Hsieh; Nou-Ying Tang; Su-Yin Chiang; Ching-Tou Hsieh; Jaung-Geng Lin

1999-01-01

265

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

266

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

267

Electron-quasihole duality and second-order differential equation for Read-Rezayi and Jack wave functions  

SciTech Connect

We consider the quasihole wave functions of the non-Abelian Read-Rezayi quantum-Hall states which are given by the conformal blocks of the minimal model WA{sub k-1}(k+1,k+2) of the WA{sub k-1} algebra. By studying the degenerate representations of this conformal field theories, we derive a second-order differential equation satisfied by a general many-quasihole wave function. We find a duality between the differential equations fixing the electron and quasihole wave functions. They both satisfy the Laplace-Beltrami equation. We use this equation to obtain an analytic expression for the generic wave function with one excess flux. These results also apply to the more general models WA{sub k-1}(k+1,k+r) corresponding to the recently introduced Jack states.

Estienne, Benoit [Institute for Theoretical Physics, Universiteit van Amsterdam, Valckenierstraat 65, 1018 XE Amsterdam (Netherlands); Bernevig, B. Andrei [Department of Physics, Princeton University, Princeton, New Jersey 08544 (United States); Santachiara, Raoul [LPTMS, UMR 8626, CNRS-Universite Paris-Sud, Batiment 100, 91405 Orsay (France)

2010-11-15

268

Jack bean ?-mannosidase (Jb?-man): tolerance to alkali, chelating and reducing agents and energetics of catalysis and inhibition.  

PubMed

Investigations of the catalytic and structural transitions of jack bean ?-mannosidase (Jb?-man) are described in the present paper. The enzyme was maximally stable at pH 5.0; however, when incubated in the pH range of 11.0-12.0, showed 1.3 times higher activity and also stability for longer time. The free amino group at or near the active site was probably involved in the stability and activation mechanism. The active site is constituted by the association of two unidentical subunits connected by disulfide linkages. The metalloenzyme has Zn(2+) ions tightly bound and chelation reduces the thermal stability of the protein. Energetics of catalysis and thermodynamics of inhibition of the enzyme were also carried out. PMID:21924285

Kumar, Avinash; Gaikwad, Sushama M

2011-12-01

269

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.

2013-01-01

270

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 4.4treesm-2, but there was substantial spatial variation associated with three primary vegetation patterns: dense

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

1997-01-01

271

The Impact of Simulated Acid Rain on Soil Leachate and Xylem Chemistry in a Jack Pine (Pinus Banksiana Lamb.) Stand in Northern Ontario, Canada  

Microsoft Academic Search

The impact of simulated acid rain on soil leachate and xylem chemistry in a young Jack pine (Pinus banksiana Lamb.) stand in the boreal forest of northern Ontario was evaluated. Permanent plots (5 × 2 m) were established in 1981 which were sprayed twice monthly with simulated acid rain, adjusted to pH 5.6, 4.0, 3.5, 3.0 or 2.5 with a

Shaun A. Watmough; Thomas C. Hutchinson; Eric P. S. Sager

1999-01-01

272

Comparative study of the functional properties of bambarra groundnut ( Voandzeia subterranean), jack bean ( Canavalia ensiformis) and mucuna bean ( Mucuna pruriens) flours  

Microsoft Academic Search

Functional properties of bambarra groundnut flour (BGF), jack bean flour (JBF) and mucuna bean (MBF) were determined. pH dependent protein solubility profile revealed that highest solubility in all flours was at pH 10, while minimum solubility was obtained at pH 4, which correspond to the isoelectric point. Gelation capacity was minimal at pH 4 for all of the flours. Increase

K. O. Adebowale; O. S. Lawal

2004-01-01

273

A Capillary Electrophoretic Study on the Specificity of ?-Galactosidases from Aspergillus oryzae, Escherichia coli, Streptococcus pneumoniae,and Canavalia ensiformis(Jack Bean)  

Microsoft Academic Search

The specificities of the ?-galactosidases fromAspergillus oryzae, Escherichia coli, Streptococcus pneumoniae,andCanavalia ensiformis(jack bean) have been studied by capillary zone electrophoresis. Various di- and oligosaccharides as well as a biantennary asialoN-glycan were used as substrates. Following enzymatic hydrolysis, the mixtures of substrates and products were derivatized with ethyl 4-aminobenzoate and separated by high-performance capillary electrophoresis in a borate buffer system using

Reinhard Zeleny; Friedrich Altmann; Werner Praznik

1997-01-01

274

Acid phosphatase, alkaline phosphatase and arylsulfatase activities in soils from a jack pine (Pinus banksiana Lamb.) ecosystem after clear-cutting, prescribed burning, and scarification  

Microsoft Academic Search

Acid phosphatase, alkaline phosphatase and arylsulfatase activities were determined from organic and mineral soils of a jack\\u000a pine (Pinus banksiana L.) community 4 years after clear-cutting alone, clear-cutting followed by prescribed burning and clear-cutting followed\\u000a by scarification. Controls consisted of uncut plots. Prescribed burning lowered soil enzyme activities in the organic layers\\u000a as compared to the other treatments. Acid phosphatase

W. J. Staddon; L. C. Duchesne; J. T. Trevors

1998-01-01

275

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

276

A Preliminary Investigation of the Jack-Bean Urease Inhibition by Randomly Selected Traditionally Used Herbal Medicine  

PubMed Central

Helicobacter pylori (H. pylori) infection leads to different clinical and pathological outcomes in humans, including chronic gastritis, peptic ulcer disease and gastric neoplasia and even gastric cancer and its eradiation dependst upon multi-drug therapy. The most effective therapy is still unknown and prompts people to make great efforts to find better and more modern natural or synthetic anti-H. pylori agents. In this report 21 randomly selected herbal methanolic extracts were evaluated for their effect on inhibition of Jack-bean urease using the indophenol method as described by Weatherburn. The inhibition potency was measured by UV spectroscopy technique at 630 nm which attributes to released ammonium. Among these extracts, five showed potent inhibitory activities with IC50 ranges of 18-35 ?g/mL. These plants are Matricaria disciforme (IC50:35 ?g/mL), Nasturtium officinale (IC50:18 ?g/mL), Punica granatum (IC50:30 ?g/mL), Camelia sinensis (IC50:35 ?g/mL), Citrus aurantifolia (IC50:28 ?g/mL).

Biglar, Mahmood; Soltani, Khadijeh; Nabati, Farzaneh; Bazl, Roya; Mojab, Faraz; Amanlou, Massoud

2012-01-01

277

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

278

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

279

Population structure and comparative phylogeography of jack species (Caranx ignobilis and C. melampygus) in the high Hawaiian Islands.  

PubMed

Members of the family Carangidae are top-level predators and highly prized food and sport fishes. Although ecologically and economically important, little is known about the biology of numerous species in the family. This is particularly true of the jacks Caranx ignobilis and C. melampygus, which have experienced recent population reductions around the high Hawaiian Islands due to overfishing. Previous studies have documented territorial tendencies as well as cases of long-distance excursions in both species, suggesting populations may exhibit a range of structure at the genetic level. To explore this possibility, mitochondrial DNA ATPase6 and ATPase8 gene sequence variation was assessed from 91 individuals (33 C. ignobilis and 58 C. melampygus) spanning the islands of Kaua'i, O'ahu, Moloka'i, Maui, and Hawai'i. Although a total of 20 distinct haplotypes (8 for C. ignobilis; 12 for C. melampygus) were recovered, no evidence of population structure was found for either species across the examined geographic range. However, distinct demographic patterns were identified, implying differing evolutionary histories and/or population dynamics. Additionally, ? 6% of the examined C. ignobilis were C. ignobilis × C. melampygus hybrids because they harbored mitochondrial haplotypes typical of C. melampygus. These hybrids contribute to measurable gene flow between the species and may play a significant role in the evolution of the genus. PMID:20881031

Santos, Scott R; Xiang, Yu; Tagawa, Annette W

2011-01-01

280

Particle Fluxes in the Marginal Seas of Antarctica: A 20-year Synthesis in Honor of Jack Dymond  

NASA Astrophysics Data System (ADS)

One of Jack Dymond's long-standing scientific passions was the study of particles moving through the ocean water column. Jack's pioneering work in this area in the 1970's and generous mentoring of others throughout his career lead directly to the first authors involvement in sediment trap studies. Here we present a synthesis of 20 years of particle flux studies in coastal Antarctic (including the work of Collier and Dymond et al.) and highlight some of the important features and unresolved issues related to integrating particle trap interceptor data with other measures of production, transport, and deposition. The first sediment trap arrays were deployed on the Antarctic shelf in 1981 and 1982 in the Antarctic Peninsula. Simple instruments were also deployed in 1984 and 1986 in the Ross Sea. Since then, several nations (US, Italy, New Zealand) have recovered time series sediment trap data on moorings in both of these areas. This current synthesis makes use of data from approximately 22 sites, the majority of which are in the Ross Sea, and includes about 900 discrete samples of particles in vertical transit through the water column. We now have many complete time series that extend through the winter, allowing several important generalizations to be made. For example, annual particle-mediated organic C fluxes to below 200 meters in the Ross Sea average 4.4±3.3 g C m-2 yr-1. These values are significantly less than export fluxes calculated using short-term surface water mass balance approaches or Th isotope techniques yet are higher than seabed sediment accumulation rates. Intriguingly, seasonal seabed arrival rates of organic C estimated from in-situ summertime benthic respirometry studies yield C flux values similar in magnitude to those from sediment traps deployed at the same time, lending strong support to trap data. The cause of current disagreements between various methods of flux estimation may in fact not be solved until process studies are accomplished that extend through the austral autumn into winter and/or the biogeochemistry of Th is better understood in coastal area of the Southern Ocean. Nearly all Ross Sea particle flux time series show relative low sedimentation during the periods of highest primary production in surface waters followed by either events or periods of enhanced sedimentation during the latest austral summer and/or autumn. This high degree of decoupling between production and sedimentation is unusual and may well represent low grazing rates. It is likely that purely physical phenomena associated with the return of winter sea ice are responsible for enhanced autumn sedimentation in the Ross Sea. Compared to the Ross Sea region, biogenic fluxes in the Palmer Basin area of the Antarctic Peninsula are higher, but are more tightly coupled to productivity in surface waters. We conclude our synthesis by presenting a general model for particle production and deposition in several end-member environments of the Antarctic Margin.

Dunbar, R. B.; Langone, L.

2004-12-01

281

Engineering task plan for upgrades to the leveling jacks on core sample trucks number 3 and 4  

SciTech Connect

Characterizing the waste in underground storage tanks at the Hanford Site is accomplished by obtaining a representative core sample for analysis. Core sampling is one of the numerous techniques that have been developed for use given the environmental and field conditions at the Hanford Site. Core sampling is currently accomplished using either Push Mode Core Sample Truck No.1 or; Rotary Mode Core Sample Trucks No.2, 3 or 4. Past analysis (WHC 1994) has indicated that the Core Sample Truck (CST) leveling jacks are structurally inadequate when lateral loads are applied. WHC 1994 identifies many areas where failure could occur. All these failures are based on exceeding the allowable stresses listed in the American Institute of Steel Construction (AISC) code. The mode of failure is for the outrigger attachments to the truck frame to fail resulting in dropping of the CST and possible overturning (Ref. Ziada and Hundal, 1996). Out of level deployment of the truck can exceed the code allowable stresses in the structure. Calculations have been performed to establish limits for maintaining the truck level when lifting. The calculations and the associated limits are included in appendix A. The need for future operations of the CSTS is limited. Sampling is expected to be complete in FY-2001. Since there is limited time at risk for continued use of the CSTS with the leveling controls without correcting the structural problems, there are several design changes that could give incremental improvements to the operational safety of the CSTS with limited impact on available operating time. The improvements focus on making the truck easier to control during lifting and leveling. Not all of the tasks identified in this ETP need to be performed. Each task alone can improve the safety. This engineering task plan is the management plan document for implementing the necessary additional structural analysis. Any additional changes to meet requirements of standing orders shall require a Letter of Instruction from Numatec Hanford Company (NHC).

KOSTELNIK, A.J.

1999-02-24

282

Temperature- and pressure-dependent stopped-flow kinetic studies of jack bean urease. Implications for the catalytic mechanism.  

PubMed

Urease, a Ni-containing metalloenzyme, features an activity that has profound medical and agricultural implications. The mechanism of this activity, however, has not been as yet thoroughly established. Accordingly, to improve its understanding, in this study we analyzed the steady-state kinetic parameters of the enzyme (jack bean), K (M) and k (cat), measured at different temperatures and pressures. Such an analysis is useful as it provides information on the molecular nature of the intermediate and transition states of the catalytic reaction. We measured the parameters in a noninteracting buffer using a stopped-flow technique in the temperature range 15-35 °C and in the pressure range 5-132 MPa, the pressure-dependent measurements being the first of their kind performed for urease. While temperature enhanced the activity of urease, pressure inhibited the enzyme; the inhibition was biphasic. Analyzing K (M) provided the characteristics of the formation of the ES complex, and analyzing k (cat), the characteristics of the activation of ES. From the temperature-dependent measurements, the energetic parameters were derived, i.e. thermodynamic ?H (o) and ?S (o) for ES formation, and kinetic ?H ( ? ) and ?S ( ? ) for ES activation, while from the pressure-dependent measurements, the binding ?V (b) and activation ?V(#)(cat) volumes were determined. The thermodynamic and activation parameters obtained are discussed in terms of the current proposals for the mechanism of the urease reaction, and they are found to support the mechanism proposed by Benini et al. (Structure 7:205-216; 1999), in which the Ni-Ni bridging hydroxide--not the terminal hydroxide--is the nucleophile in the catalytic reaction. PMID:22890689

Krajewska, Barbara; van Eldik, Rudi; Brindell, Ma?gorzata

2012-10-01

283

Jack bean (Canavalia ensiformis) urease induces eicosanoid-modulated hemocyte aggregation in the Chagas' disease vector Rhodnius prolixus.  

PubMed

Ureases are multifunctional proteins that display biological activities independently of their enzymatic function, such as induction of exocytosis and insecticidal effects. Rhodnius prolixus, a major vector of Chagas' disease, is a model for studies on the entomotoxicity of jack bean urease (JBU). We have previously shown that JBU induces the production of eicosanoids in isolated tissues of R. prolixus. In insects, the immune response comprises cellular and humoral reactions, and is centrally modulated by eicosanoids. Cyclooxygenase products signal immunity in insects, mainly cellular reactions, such as hemocyte aggregation. In searching for a link between JBU's toxic effects and immune reactions in insects, we have studied the effects of this toxin on R. prolixus hemocytes. JBU triggers aggregation of hemocytes after injection into the hemocoel and when applied to isolated cells. On in vitro assays, the eicosanoid synthesis inhibitors dexamethasone (phospholipase A2 indirect inhibitor) and indomethacin (cyclooxygenase inhibitor) counteracted JBU's effect, indicating that eicosanoids, more specifically cyclooxygenase products, are likely to mediate the aggregation response. Contrarily, the inhibitors esculetin and baicalein were inactive, suggesting that lipoxygenase products are not involved in JBU's effect. Extracellular calcium was also necessary for JBU's effect, in agreement to other cell models responsive to ureases. A progressive darkening of the medium of JBU-treated hemocytes was observed, suggestive of a humoral response. JBU was immunolocalized in the cultured cells upon treatment along with cytoskeleton damage. The highest concentration of JBU tested on cultured cells also led to nuclei aggregation of adherent hemocytes. This is the first time urease has been shown to affect insect hemocytes, contributing to our understanding of the entomotoxic mechanisms of action of this protein. PMID:24561121

Defferrari, M S; da Silva, R; Orchard, I; Carlini, C R

2014-05-01

284

Histone deacetylase (HDAC) inhibitory and antiproliferative activities of phenolic-rich extracts derived from the rhizome of Hydnophytum formicarum Jack.: sinapinic acid acts as HDAC inhibitor  

PubMed Central

Background The rhizome of Hydnophytum formicarum Jack., a medicinal plant known in Thai as Hua-Roi-Roo, has been used in Thai traditional herbal medicine for treatment of cancer. We assessed the ability of its ethanolic and phenolic-rich extracts and its major phenolic compound, sinapinic acid, possessing histone deacetylase (HDAC) inhibitory activity to inhibit proliferation of 5 human cancer cell lines. Methods HeLa cells were used to study HDAC inhibitory activity of the extracts, sinapinic acid, and a well-known HDAC inhibitor sodium butyrate. Five human cancer cell lines and one non-cancer cell line were used to study antiproliferative activities of the plant extracts, sinapinic acid and sodium butyrate, comparatively. Results Results indicated that ethanolic and phenolic-rich extracts of H. formicarum Jack. rhizome possessed both antiproliferative activity and HDAC inhibitory activity in HeLa cells. Sinapinic acid, despite its lower HDAC inhibitory activity than the well-known HDAC inhibitor sodium butyrate, inhibited the growth of HeLa and HT29 cells more effectively than sodium butyrate. However, sinapinic acid inhibited the growth of HCT116 and Jurkat cells less effectively than sodium butyrate. The non-cancer cell line (Vero cells) and breast cancer cell line (MCF-7 cells) appeared to be resistant to both sinapinic acid and sodium butyrate. The growth inhibitory effects of the ethanolic and phenolic-rich extracts and sinapinic acid in HeLa cells were mediated by induction of apoptosis. Conclusions The results of this study support the efficacy of H. formicarum Jack. rhizome ethanolic and phenolic-rich extracts for the treatment of cervical cancer, colon cancer, and T- cell leukemia in an alternative medicine. Further studies of other active ingredients from this plant are needed.

2013-01-01

285

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.

GARCIA-ROBLEDO, CARLOS; HORVITZ, CAROL C.

2011-01-01

286

Jack Pines and Walleyes.  

ERIC Educational Resources Information Center

Secondary school students in Pine River, Minnesota, need enough common knowledge to compete with graduates of other schools, but educators must keep in mind--as they move toward a more uniform curriculum--that each community is unique. (Author/RW)

Lakes, Glendon

1982-01-01

287

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

288

The chemical feeding ecology ofNeodiprion dubiosus schedl,N. rugifrons midd., andN. lecontei (Fitch) on jack pine (Pinus banksiana lamb.).  

PubMed

Two monophagous sawflies,Neodiprion dubiosus andN. rugifrons, actively avoid feeding on the current season's needles of jack pine,Pinus banksiana, while the polyphagousN. lecontei feeds indiscriminately on foliage of all age classes. Bioassay studies with needle extracts indicate thatN. dubiosus andN. rugifrons larval feeding preference is governed by a group of tricyclic diterpene resin acids. Resin acids commonly occur in needles of all ages; however, levopimaric, palustric, dehydroabietic, and neoabietic acids were at higher concentrations in the new needles.N. dubiosus was significantly deterred from feeding on 1-year-old foliage when treated with the pure resin acids, palustric and levopimaric, at 0.5 and 1.0 mg/ml MeOH.N. rugifrons larvae were deterred from feeding by pure dehydroabietic, neoabietic, and palustric acids at 1.0 mg/ml MeOH. PMID:24318850

Schuh, B A; Benjamin, D M

1984-07-01

289

Effects of Concanavalin A, fed as a constituent of Jack bean (Canavalia ensiformis L.) seeds, on the humoral immune response and performance of broiler chickens.  

PubMed

An experiment was conducted to investigate the effects of the lectin, Concanavalin A (Con A), contained in raw Jack bean (JB) (Canavalia ensiformis, L.) seeds on the immunological response of broilers. A maize-soybean meal basal diet was prepared to which either 2.5, 5, or 10% of ground raw Jack bean (RJB) seeds was added. The RJB seeds contained 24 g Con A/kg on a dry matter basis, as measured by rocket immunoelectrophoresis. Similar diets were prepared by using the same levels of JB after toasting at 190 C for 16 min. In addition, the basal diet was pair-fed to groups of chicks at the level of feed intake of chicks fed the 10% RJB diet. Each diet was fed to six groups of six chicks for 6 wk. At 5 wk, 15 of chicks from each diet were immunized against Brucella abortus (BA) and the anti-BA antibody titers were determined 1 wk later by ELISA. Antibody production against Con A was also measured by the same method. Binding of Con A to intestinal villi and subsequent endocytosis were confirmed by microscopic examination using a specific peroxidase-antiperoxidase-staining technique. Performance was recorded weekly. Feed intake and weight gain were reduced (P < 0.05) only by the diet containing 10% RJB, indicating that broiler chicks can tolerate daily intakes of 100 mg of Con A over 6 wk without affecting growth. Toasted JB diets supported adequate chick performance. The antibody response to BA did not differ with dietary treatment. Serum from chicks fed raw JB also contained antibodies against Con A. The bursa of Fabricius, thymus, spleen, and pancreas dry weights, as a percentage of dry body weight, were not affected by the experimental diets. The data indicated that Con A binds to the cells of the gastrointestinal tract, passes into the general circulation and, eventually, elicits an immunological response without affecting the production of antibodies to BA. PMID:9495494

Mendez, A; Vargas, R E; Michelangeli, C

1998-02-01

290

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

291

Seabed instability and 3D FE jack-up soil-structure interaction analysis L'instabilité des fonds marins et l'analyse 3D par éléments finis de l'interaction sol \\/ structure des plateformes autoélévatrices  

Microsoft Academic Search

D FE integrated soil-foundation-structure interaction modelling related to a three-leg jack-up rig installation offshore Norway is carried out. Based on the site survey \\/ investigation the soil conditions vary accross the site and consist of bedrock overlied by soft silt \\/ clay and a shallow layer of seabed sand. From the conventional and 2D FE analyses an engineering solution comprizing

Lindita Kellezi; Gregers Kudsk; Hugo Hofstede

292

Impact of the cosmetic mouthwash "Jack Pro Spülung plus" ("rheodol-Spülung plus") on the oral cavity flora, tested in a monocentric, controlled, randomized, blind, cross-over comparative study.  

PubMed

Aim: Jack Pro Spülung Plus (also available as "rheodol-Spülung plus") is recommended to mechanically maintain oral hygiene as part of an overall oral hygiene concept. Because Jack Pro Spülung Plus contains the active agents polihexanide and tosylchloramide sodium in concentrations below microbicidal efficacy, this study tested the hypothesis that the combination of mechanical rinsing and bacteriostatic effect surpasses the effect of mechanical rinsing alone. Method: The study was performed with 30 volunteers as a monocentric, controlled, randomized, blind, cross-over comparative study. The efficacy of the test product (active agents polihexanide 0.02-0.03% and tosylchloramide sodium 0.004-0.006%) was compared to an aqueous solution of polihexanide (0.02-0.03%) and to Ringer solution as negative control. The efficacy was measured as the reduction of colony forming units (cfu) on buccal mucosa after aerobic and anaerobic cultivation. After determination of pre-values, the volunteers performed mouthrinsing for 30 sec with each of the 3 tested solutions. After 1, 10 and 60 minutes, cfu numbers were determined again. The reduction factor was calculated as the difference between log10 of the measured cfu before and after mouthrinsing with the test solution. The sampling was performed using a template with a smear area of 1 x 1 cm. Results: Using Ringer solution led to a slight mechanically-induced reduction of cfu in the oral cavity 1 min after rinsing the mouth cavity with the solution. After 10 min and 60 min, no influence on the cfu number could be detected. Using Jack pro Spülung Plus led to a bacteriostatic effect up to 60 min after mouthrinsing; 10 min and 60 min after rinsing the efficacy of Ringer solution was also significantly surpassed. The aqueous solution of polihexanide was less effective than Jack pro Spülung Plus after 10 and 60 min. Conclusion: Based on these observations, we conclude that Jack pro Spülung Plus is suitable for improvement of oral hygiene if patients have sensitive oral mucosa, e.g., in cases of aggressive cancer therapy or for patients with tracheostoma. PMID:24653972

Göhring, Jana; Müller, Gerald; Biffar, Reiner; Kramer, Axel

2014-01-01

293

Inhibition of jack bean urease by N-(n-butyl) thiophosphorictriamide and N-(n-butyl) phosphorictriamide: determination of the inhibition mechanism.  

PubMed

N-(n-butyl)thiophosphorictriamide (NBPT) and its oxygen analogue N-(n-butyl)phosphorictriamide (NBPTO) were studied as inhibitors of jack bean urease. NBPTO was obtained by spontaneous conversion of NBPT into NBPTO. The conversion under laboratory conditions was slow and did not affect NBPT studies. The mechanisms of NBPT and NBPTO inhibition were determined by analysis of the reaction progress curves in the presence of different inhibitor concentrations. The obtained plots were time-dependent and characteristic of slow-binding inhibition. The effects of different concentration of NBPT and NBPTO on the initial and steady-state velocities as well as the apparent first-order velocity constants obeyed the relationships for a one-step enzyme-inhibitor interaction, qualified as mechanism A. The inhibition constants of urease by NBPT and NBPTO were found to be 0.15 microM and 2.1 nM, respectively. The inhibition constant for NBPT was also calculated by steady-state analysis and was found to be 0.13 microM. NBPTO was found to be a very strong inhibitor of urease in contrast to NBPT. PMID:12164390

Kot, M; Zaborska, W; Orlinska, K

2001-12-01

294

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

295

Role of aquaporins in root water transport of ectomycorrhizal jack pine (Pinus banksiana) seedlings exposed to NaCl and fluoride.  

PubMed

Effects of ectomycorrhizal (ECM) fungus Suillus tomentosus on water transport properties were studied in jack pine (Pinus banksiana) seedlings. The hydraulic conductivity of root cortical cells (L(pc)) and of the whole root system (L(pr)) in ECM plants was higher by twofold to fourfold compared with the non-ECM seedlings. HgCl2 had a greater inhibitory effect on L(pc) in ECM compared with non-ECM seedlings, suggesting that the mercury-sensitive, aquaporin (AQP)-mediated water transport was largely responsible for the differences in L(pc) between the two groups of plants. L(pc) was rapidly and drastically reduced by the 50 mM NaCl treatment. However, in ECM plants, the initial decline in L(pc) was followed by a quick recovery to the pre-treatment level, while the reduction of L(pc) in non-ECM seedlings progressed over time. Treatments with fluoride reduced L(pc) by about twofold in non-ECM seedlings and caused smaller reductions of L(pc) in ECM plants. When either 2 mM KF or 2 mM NaF were added to the 50 mM NaCl treatment solution, the inhibitory effect of NaCl on L(pc) was rapidly reversed in both groups of plants. The results suggest that AQP-mediated water transport may be linked to the enhancement of salt stress resistance reported for ECM plants. PMID:20040068

Lee, Seong Hee; Calvo-Polanco, Mónica; Chung, Gap Chae; Zwiazek, Janusz J

2010-05-01

296

Influence of 2,5-dichloro-1,4-benzoquinone on jack bean urease activity. Inhibitory effect, total reducing capacity and DPPH radical scavenging activity.  

PubMed

Inhibition of jack bean activity by 2,5-dichloro-1,4-benzoquinone (DCBQ) was studied in phosphate buffer, pH 7.0. It was found that DCBQ acted as a strong, time and concentration dependent inactivator of urease. Under the experimental conditions obeyed the terms of pseudo-first-order reaction, urease was totally inactivated. Application of Wilson-Kitz method proved that the urease-DCBQ interaction followed a simple bimolecular process and the presence of intermediate complex was undetectable. The determined second order rate constant of the inactivation was 0.053 (?M min)(-1). Thiols such as l-cysteine, glutathione and dithiothreitol (DTT) protected urease from inhibition by DCBQ but DCBQ-modified urease did not regain its activity after DTT application. The thiol protective studies indicated an essential role of urease thiol(s) in the inhibition. The irreversibility of the inactivation showed that the process was a result of a direct modification of urease thiol(s) by DCBQ (DCBQ chlorine(s) substitution). The decomposition of DCBQ in aqueous solution at natural light exposure was monitored by visible spectrophotometry, determination of the total reducing capacity (Folin-Ciocalteu method) and DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging ability. The DCBQ conversion resulted in a decrease of the inhibition power and was well correlated with the increase of the total reducing capacity and DPPH scavenging ability. These findings were attributed to DCBQ transformation by photolysis and the hydrolysis effect was found to be negligible. PMID:22175050

Kot, Miros?awa; Olech, Zofia

2011-01-01

297

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

298

Establishment of alpha-cellulose extraction method and its application using tropical tree sungkai (Peronema canescens Jack) for reliable paleoclimate reconstruction in tropical areas  

NASA Astrophysics Data System (ADS)

Tree rings are widely used to reconstruct paleoclimate in terrestrial areas in terms of high spatial / temporal resolution and great sensitivity for climatic factors (e.g., precipitation, relative humidity, air temperature, etc.). However, this is not necessarily the case for Asian tropical trees because growth rings of many tropical trees are ambiguous and also because trees that grow in dense rainforest are affected by other environmental factors, such as the existence of neighboring trees. Oxygen isotopic ratio of tree-ring alpha-cellulose can be a proxy of paleoclimate reconstruction in areas where little correlation is found between tree-ring widths and climatic factors [Waterhouse et al., 2002; Rinne et al., 2005]. Thus, continuous, alternative meteorological data in Asian tropical areas that drive the global climate system can also be provided by measuring the oxygen isotopic ratio of alpha-cellulose of tropical trees. Previous works showed that tree-ring components (mainly cellulose, hemicelluloses and lignin) have different isotopic ratios [Wilson and Grinsted, 1977; Loader et al., 2003]. In addition, the isotopic ratios of untreated samples show weaker correlations with climate signals than that of chemically treated samples [Rinne et al., 2005]. For these reasons, it is necessary to effectively extract only alpha-cellulose for reliable paleoclimatic reconstruction. Furtermore, an optimum processing time can be different between species and hence it needs to be determined for each. However, there is no report that aims at estimation of an optimum processing time using tropical hardwoods. Sungkai (Peronema canescens Jack) is one of tropical hardwood species that formed distinct growth rings and has high sensitivity species for environment [Ohashi et al., 1992]. In this study, the optimum alpha-cellulose extraction time was estimated for sungkai (SungkaiNAN7, collected at Serang, West Java, Indonesia) by measuring oxygen and carbon isotopic ratios, ATR-IR and dry weight change. The procedure of chemical treatment has three steps (1. organic solvent extraction using acetone, 2. bleaching reaction using acidified sodium chlorite solution and 3. alkali reaction using 17% sodium hydroxide solution), which is based on Nakatsuka et al. (2004) who modified the procedure of Loader et al. (1997). The first criteria to determine reaction time at individual stages are that oxygen and carbon isotopic ratios become constant within analytical errors. The additional criteria are: (a) relative amount of lignin ? 0, (b) percentage of dry weight after the third stage ? 48.6% [Martawijaya et al., 2005] and (c) disappearance of lignin and hemicellulose peaks in the ATR-IR absorption bands. As a result, reaction time at individual stages for sungkai was estimated as 30 min for organic solvent extraction (stage 1), 6 hrs (1 hr × 6) for bleaching reaction (stage 2) and 2.25 hrs (45 min × 3) for alkali reaction (stage 3). The established procedure was applied to time series analysis of carbon and oxygen isotopes of two sungkai disks (SungkaiNAN7 and SungkaiNAN8) in order to evaluate their validity as paleoclimatic proxies.

Harada, M.; Watanabe, Y.; Nakatsuka, T.; Tazuru, S.; Horikawa, Y.; Sugiyama, J.; Tsuda, T.; Tagami, T.

2012-04-01

299

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.

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

2012-01-01

300

Genome size in Dipsacaceae and Morina longifolia (Morinaceae)  

Microsoft Academic Search

Dipsacaceae and Morinaceae have for a long time been regarded as separate but related families, whereas according to APG III\\u000a they are included within the larger family Caprifoliaceae. Although genome size studies seldom provide conclusive characters\\u000a for higher level systematics, they can yield useful information at a lower taxonomy level. In this study, we used DNA flow\\u000a cytometry (supplemented by

Eva M. Temsch; Johann Greilhuber

2010-01-01

301

Cratoxylum formosum (Jack) Dyer ssp. pruniflorum (Kurz) Gogel. (H?ng y? m?) 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.

2014-01-01

302

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

303

Facilities management: a “Jack of all trades”?  

Microsoft Academic Search

Despite its rapid development in the last decade, facilities management (FM) stills suffers from an identity crisis as the definition and scope of FM remains a contentious issue. To this end, three fundamental issues are re-examined in this paper: what FM constitutes; what a facility manager is; and how the FM profession can be enhanced. These issues remain critical as

Linda Tay; Joseph T. L. Ooi

2001-01-01

304

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.

305

Smart Avatars in JackMOO  

Microsoft Academic Search

Creation of compelling 3-dimensional, multi-user virtual worlds for education and training applications requires a high degree of realism in the appearance, interaction, and behavior of avatars within the scene. Our goal is to develop and\\/or adapt existing 3-dimensional technologies to provide training scenarios across the Internet in a form as close as possible to the appearance and interaction expected of

Jianping Shi; Thomas J. Smith; John P. Granieri; Norman I. Badler

1999-01-01

306

Tongkat Ali as a potential herbal supplement for physically active male and female seniors--a pilot study.  

PubMed

Tongkat Ali (Eurycoma longifolia; TA) is known to increase testosterone levels and alleviate aging males' symptoms. This study aimed at investigating TA as an ergogenic supplement for elderly people. Thirteen physically active male and 12 physically active female seniors (57-72?years) were supplemented with 400-mg TA extract daily for 5?weeks. Standard hematological parameters were taken. In addition, the concentrations of total and free testosterone, dihydroepiandrosterone, cortisol, insulin-like growth factor-1, and sex hormone-binding globulin were analyzed. As additional biochemical parameters, blood urea nitrogen and creatine kinase as parameters of kidney function and muscle damage, respectively, as well as the muscle strength by a simple handgrip test were determined. After treatment, hemoglobin, testosterone, and dihydroepiandrosterone concentrations, and the ratio of total testosterone/cortisol and muscle force remained significantly lower in female seniors than in male seniors. Hematocrit and erythrocyte count in male seniors increased slightly but were significantly higher than in female seniors. Treatment resulted in significant increases in total and free testosterone concentrations and muscular force in men and women. The increase in free testosterone in women is thought to be due to the significant decline in sex hormone-binding globulin concentrations. The study affirms the ergogenic benefit of TA through enhanced muscle strength. PMID:23754792

Henkel, Ralf R; Wang, Ruxiang; Bassett, Susan H; Chen, Tao; Liu, Na; Zhu, Ying; Tambi, Mohd Ismail

2014-04-01

307

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

308

Effect of wild mint (Mentha longifolia) infusion on the over all performance of broiler chicks.  

PubMed

An attempt was made to evaluate the effect of aqueous extract of wild mint (Mentha Ingifolia) on the overall performance of broiler chicks at NWFP Agricultural University, Peshawar in July 2005. Three levels of fresh wild mint infusion at the rate of 50, 40 and 30 mL L(-1) of fresh drinking water were provided to chicks in groups A, B and C, respectively and group D was kept as control, each group was replicated four times with 10 chicks per replicate, reared for 35 days, in an open sided house in cages of the same size. No vaccination was practiced. Data were recorded daily for feed intake, water intake and for weight gain on weekly basis. Feed conversion efficiency, dressing percentage, percent mortality, weight of different body organs (breast, thigh and leg), giblets (liver, heart and gizzard), intestine and economics for each group was calculated at the end of experimental period. It was found that group B receiving 40 mL L(-1) of wild mint infusion in drinking water had a significant (p < 0.05) effect on mean body weight gain, feed intake, water intake, feed conversion efficiency, dressing percentage and weight of different body organs (breast, thigh and leg). Significant (p < 0.05) differences were also found in mortality, highest mortality was observed in group D (10%) as compared with groups A, B and C, however there was no significant effect on giblets (liver, heart, gizzard), intestine and weight of abdominal fat. Mean feed cost and gross return was significantly (p < 0.05) effected for group B. Feed cost was lower and gross return was significantly (p < 0.05) higher for group B than other treated groups and control. PMID:19070065

Durrani, F R; Sultan, A; Marri, Muhammad Latif; Chand, N; Durrani, Z

2007-04-01

309

The Jack-up Drilling Platform:Design and operation  

SciTech Connect

This book presents papers on the design and operation of drilling rigs for offshore platforms. Topics considered include piled foundations, hydrodynamic forces, environmental parameters, depth, structural behavior, harsh environments, leg loading and unloading, icy waters, foundation stability, bottom fixity, an operator's view, and dry transportation. Both oil and gas wells are discussed.

Boswell, L.F.

1986-01-01

310

Conceptual design of the inner cryostat support and jack  

SciTech Connect

The Endcap Cryostat will be supported by the End Barrel Tilecalorimeter at four points. The outer support points will be carried by a structure that is external to the End Barrel modules while the inner support points will be directly on the modules. This paper concerns the design of these inner support points. The design parameters for the inner support points are: (1) must be able to support twice the front load from the Endcap Cryostat (70 tons); (2) the support point must make contact on the inner radius surface provided on the Endcap Cryostat; (3) vertical adjust must be allowed of up to {+-} 6mm; (4) the support must be a simple support; (5) the support must be contained within the envelope of one End Barrel submodule.

Guarino, V.; Petereit, E. [Argonne National Lab., IL (United States). High Energy Physics Div.

1998-01-11

311

Fatal accidental asphyxia in a jack-knife position  

Microsoft Academic Search

Accidental death from postural or positional asphyxia takes place when the abnormal position of the victim’s body compromises the process of respiration. Diagnosis is largely made by circumstantial evidence supported by absence of any other significant pathology or trauma explaining death. This case report is about a 50-year-old male who had been drinking the previous night and was found dead

F. A. Benomran

2010-01-01

312

Push pull windmill head having double beam pumping jack  

SciTech Connect

This windmill head comprises a stub tower having a rotatable platform carrying a wind driven fan which drives a transmission mechanism. The mechanism has two cranks and pitman arms at opposite sides driving two rocking beams carrying counterweights. One beam is coupled to a vertical pump rod by non-rigid members to reciprocate the pump rod. The counterweights assist the beams in pulling up the pump rod and pumped load. A tail assembly tracks the wind by rotating the platform so that the fan faces the wind. The fan furls out of the wind when wind speed is excessive. A power unit may drive the transmission mechanism when wind speed is too low and high to drive the fan. The platform is carried by bearings which prevent vertical movement of the platform and components on it while the pump rod is being pulled up and pushed down, and while the counterweights are raised and lowered. The power unit can generate electric power when the wind speed is high enough to drive the fan.

Sutz, R. K.

1985-03-26

313

In the Michigan Court of Appeals: People vs. Jack Kevorkian.  

PubMed

HELD: There is no right to euthanasia within the constitutional right of privacy. Recognition of such a right to euthanasia would impermissibly expand the right of privacy and thus place the issue outside the arenas of public debate and legislative action. Such a holding would also involve the judiciary in deciding questions that are simply beyond its capacity. There is no principled basis for the court to legalize euthanasia. PMID:12154563

Bostrom, Barry A

2002-01-01

314

Quantum Mechanics in Chemistry (by Jack Simons and Jeff Nichols)  

NASA Astrophysics Data System (ADS)

Topics in Physical Chemistry Series. Oxford University Press: New York, 1997. xxiii + 612 pp. Illustrations. ISBN 0-19-508200-1. $75.00. One of the problems faced by graduate-level quantum mechanics courses in chemistry is that there is often little time for studying chemical problems. Students must learn so much matrix algebra and notation that a first-semester course seems more like a math or physics course than chemistry. Another problem is the focus of most graduate texts. Excellent texts, such as those by Sakurai, and older treatments, such as Messiah and Cohen-Tannoudji, offer a comprehensive amount of mathematical rigor to go along with chemistry problems, but it seems the intended audience is hard-core theoretical or physical chemistry students. Requirements that are more general, such as reaction-path dynamics, structure and term symbols, and symmetry in quantum mechanical problems, are often left behind. Schatz and Ratner's Book Quantum Mechanics in Chemistry (Prentice Hall) is one book that fills this gap (at least for second-semester students); Simons and Nichols' new book is another, but it is a book that requires revision before it can be seriously considered.

McCallum, C. Michael

1998-12-01

315

Jacked model pile shafts in offshore calcareous soils  

Microsoft Academic Search

This paper describes the results of laboratory tests carried out on model pile shafts in a variety of reconstituted calcareous sands and on silica sand. The factors influencing both the skin friction under static loading and the degradation of skin friction under cyclic loading have been investigated. The grading and crushability of the particles appears to have a significant influence

C. Y. Lee; H. G. Poulous

1988-01-01

316

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.

Yger, Marion; Girault, Jean-Antoine

2011-01-01

317

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); Waltraud X. Schulze (University of Southern Denmark;Protein Interaction Laboratory, Department of Biochemistry and Molecular Biology); Sylvie Lalonde (Universitat Tübingen;Department of Plant Physiology, Zentrum für Molekularbiologie der Pflanzen)

2003-04-11

318

Revisiting Jack Goody to Rethink Determinisms in Literacy Studies  

ERIC Educational Resources Information Center

This article revisits Goody's arguments about literacy's influence on social arrangements, culture, cognition, economics, and other domains of existence. Whereas some of his arguments tend toward technological determinism (i.e., literacy causes change in the world), other of his arguments construe literacy as a force that shapes and is shaped by…

Collin, Ross

2013-01-01

319

All Work and No PLA Makes Jack a Dull Boy  

ERIC Educational Resources Information Center

In this article, the author presents an assortment of approaches--building blocks--commonly used in Prior Learning Assessment (PLA) practices (this list is certainly not comprehensive): (1) course matching (comparing course requirements to a student's prior learning experiences); (2) student's ability to articulate learning gained from…

Popova-Gonci, Viktoria

2009-01-01

320

Inclined leg jack-up platform with flexible leg guides  

SciTech Connect

This patent describes an offshore platform assembly. It comprises a floatable hull having wells extending vertically therethrough; a plurality of inclined supporting legs secured to the hull and movable between a first, retracted position and a second, hull supporting position; flexible guide means for absorbing bending moments and forces acting on a leg chord of a corresponding leg which moves through a flexible guide means during elevation of the hull, each of the guide means being positioned in a corresponding well of the hull; means for elevating the hull with respect to the supporting legs; and wherein each of the flexible guide means is movable to a limited degree along a horizontal plane to absorb bending moments and forces acting on a corresponding leg while the hull is being elevated to an operating level.

Goldman, J.; Bennett, R.M.

1992-03-17

321

Punch-through instability of jack-up on seabed  

Microsoft Academic Search

Punch-through failure of the foundation of an independent leg jackup platform is the uncontrollable penetration of the spudcan into the seabed without increase in deck load. This paper shows how punch-through can also occur as a result of an instability of the structure as a whole, which is analogous to the overturning of a top-heavy ship and to the Euler

Hambley

1985-01-01

322

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

323

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

324

A Response to Jack R. Fraenkel. An Exchange of Views between Edwin Fenton and Jack R. Fraenkel, the Cognitive-Developmental Approach to Moral Education  

ERIC Educational Resources Information Center

Responses to Fraenkel's 15 criticisms of the author's article about Kohlberg's cognitive-developmental approach to moral education in the April 1976 issue of "Social Education." Three circumstances are stated as reasons for the differences between the two men: (1) staying up-to-date with research and publications, (2) time consumed in refuting…

Fenton, Edwin

1977-01-01

325

Creating underground space at shallow depth beneath our cities using jacked box tunnelling  

Microsoft Academic Search

Underground space beneath our cities is required for a wide range of uses, for example people transport, water storage and distribution, vehicular and pedestrian access-ways and secure storage for valuables. Some of these spaces can be created at depth using conventional bored tunnelling methods with minimal disturbance to overlying infrastructure. Where the space is required at shallow depth it is

DOUGLAS ALLENBY; JOHN W. T. ROPKINS

326

Teaching Students to Identify Research Variables: Jack and Jill Can Help  

ERIC Educational Resources Information Center

One of the goals for an undergraduate Communication Research Methods class is that students be able to read quantitative communication research from scholarly journals, identify the variables being studied, and understand the methodology employed. This sounds simple enough, but most students come into the class having never even seen a scholarly…

Katt, James

2007-01-01

327

Tissue factor-integrin interactions in cancer and thrombosis: every Jack has his Jill.  

PubMed

Tissue factor (TF) is a 47 kDa membrane protein that initiates coagulation by binding to FVII(a) and FX(a) and is a risk factor for thrombosis in many disease states. In addition to its coagulant activity, TF also influences cancer progression by triggering signaling effects via a group of G-protein coupled receptors named protease-activated receptors (PARs). TF localizes to cytoskeletal structures in migrating cells, influences cytoskeleton reorganization and promotes migration. Recently, integrins, important mediators of cell motility, have emerged as important binding partners for TF and influence both TF coagulant and PAR-2-dependent signaling functions. Direct binding of TF to integrins also impacts processes such as cell migration and signaling independent of PAR-2. A recently discovered alternatively spliced, soluble TF isoform also ligates integrins to augment angiogenesis, thus fuelling cancer progression. To date, the literature describes a complex interplay between different integrin subunits and distinct TF isoforms, but our understanding of TF-integrin bidirectional regulation remains clouded. In this review, we aim to summarize the existing knowledge on integrin-TF interaction and speculate on its relevance to physiology and pathology. PMID:23809132

Kocatürk, B; Versteeg, H H

2013-06-01

328

21 CFR 133.153 - Monterey cheese and monterey jack cheese.  

Code of Federal Regulations, 2010 CFR

...produces a finished cheese having the same physical and chemical properties. The minimum milkfat content is 50 percent by weight...the cheese. (v) Vegetable oil, with or without rice flour sprinkled on the surface, used as a coating...

2010-04-01

329

21 CFR 133.153 - Monterey cheese and monterey jack cheese.  

Code of Federal Regulations, 2010 CFR

...produces a finished cheese having the same physical and chemical properties. The minimum milkfat content is 50 percent by weight...the cheese. (v) Vegetable oil, with or without rice flour sprinkled on the surface, used as a coating...

2009-04-01

330

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

331

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.

Cheliak, W. M.; Dancik, B. P.; Morgan, K.; Yeh, F. C. H.; Strobeck, C.

1985-01-01

332

76 FR 60900 - Jack A. Danton, D.O.; Decision and Order  

Federal Register 2010, 2011, 2012, 2013

...stiffness in his neck, and not chronic pain in his left shoulder. Id. at...patients are being seen regularly for chronic pain problems and obtaining controlled...actually corresponds to the number of chronic pain patients she and Dr. Jacobs...

2011-09-30

333

Metal-organic frameworks-the new jack of all trades for (inorganic) chemists.  

PubMed

"…? Today, the research contexts in which the work on MOFs are, or will be placed, are enormously diverse and multilingual, and the technical backgrounds and motives of those involved develop equally as diversely, sometimes with a very distant reference to the original. Therefore, distinctions and care in the use of scientific language and expression are important. …?" Read more in the Editorial by Roland A. Fischer. PMID:24829187

Fischer, Roland A

2014-06-01

334

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

335

Jack of all trades: anion and transition metal binding by bis-triazole receptors  

Microsoft Academic Search

Four acyclic phenylene-1,3-bis-triazole receptors were synthesised with the heterocyclic motif covalently attached to the central phenyl ring through either the carbon or nitrogen. H NMR titration experiments reveal that all the receptors bind chloride in d6-acetone solution with the aryl-substituted systems exhibiting significantly stronger halide association than the alkyl-substituted receptors. Both N-linked systems bind chloride more strongly than their C-linked

Nicholas G. White; Paul D. Beer

2012-01-01

336

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

337

BAG-6, a jack of all trades in health and disease.  

PubMed

BCL2-associated athanogene 6 (BAG-6) (also Bat-3/Scythe) was discovered as a gene product of the major histocompatibility complex class III locus. The Xenopus ortholog Scythe was first identified to act as an anti-apoptotic protein. Subsequent studies unraveled that the large BAG-6 protein contributes to a number of cellular processes, including apoptosis, gene regulation, protein synthesis, protein quality control, and protein degradation. In this context, BAG-6 acts as a multifunctional chaperone, which interacts with its target proteins for shuttling to distinct destinations. Nonetheless, as anticipated from its genomic localization, BAG-6 is involved in a variety of immunological pathways such as macrophage function and TH1 response. Most recently, BAG-6 was identified on the plasma membrane of dendritic cells and malignantly transformed cells where it serves as cellular ligand for the activating natural killer (NK) cell receptor NKp30 triggering NK cell cytotoxicity. Moreover, target cells were found to secrete soluble variants of BAG-6 and release BAG-6 on the surface of exosomes, which inhibit or activate NK cell cytotoxicity, respectively. These data suggest that the BAG-6 antigen is an important target to shape a directed immune response or to overcome tumor-immune escape strategies established by soluble BAG-6. This review summarizes the currently known functions of BAG-6, a fascinating multicompetent protein, in health and disease. PMID:24305946

Binici, Janina; Koch, Joachim

2014-05-01

338

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

339

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

340

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

341

Genome Sequence of Aeromonas hydrophila ATCC 7966T: Jack of All Trades?  

PubMed Central

The complete genome of Aeromonas hydrophila ATCC 7966T was sequenced. Aeromonas, a ubiquitous waterborne bacterium, has been placed by the Environmental Protection Agency on the Contaminant Candidate List because of its potential to cause human disease. The 4.7-Mb genome of this emerging pathogen shows a physiologically adroit organism with broad metabolic capabilities and considerable virulence potential. A large array of virulence genes, including some identified in clinical isolates of Aeromonas spp. or Vibrio spp., may confer upon this organism the ability to infect a wide range of hosts. However, two recognized virulence markers, a type III secretion system and a lateral flagellum, that are reported in other A. hydrophila strains are not identified in the sequenced isolate, ATCC 7966T. Given the ubiquity and free-living lifestyle of this organism, there is relatively little evidence of fluidity in terms of mobile elements in the genome of this particular strain. Notable aspects of the metabolic repertoire of A. hydrophila include dissimilatory sulfate reduction and resistance mechanisms (such as thiopurine reductase, arsenate reductase, and phosphonate degradation enzymes) against toxic compounds encountered in polluted waters. These enzymes may have bioremediative as well as industrial potential. Thus, the A. hydrophila genome sequence provides valuable insights into its ability to flourish in both aquatic and host environments.

Seshadri, Rekha; Joseph, Sam W.; Chopra, Ashok K.; Sha, Jian; Shaw, Jonathan; Graf, Joerg; Haft, Daniel; Wu, Martin; Ren, Qinghu; Rosovitz, M. J.; Madupu, Ramana; Tallon, Luke; Kim, Mary; Jin, Shaohua; Vuong, Hue; Stine, O. Colin; Ali, Afsar; Horneman, Amy J.; Heidelberg, John F.

2006-01-01

342

New Analyses of Diverse Hadean Zircon Inclusions from Jack Hills, Western Australia  

NASA Technical Reports Server (NTRS)

The geological record is the only direct source of information regarding physical/chemical processes that may have ultimately been responsible for the origin of life. Known terrestrial rocks have ages that span from present day to approx. 4.0 Ga. This leaves a time gap of more than 500 Myr between lunar formation, and preservation of the oldest terrestrial crust. What were planetary conditions like wherein the prebiotic chemistry leading to life took place? The recent discovery of up to 4.37 Ga detrital zircons from Western Australia represents the only tangible record of the time period termed the Hadean Eon (4.5-4.0 Ga). Knowledge of the paragenesis of the oldest zircons potentially contributes information regarding the origin of the atmosphere, hydrosphere, continental lithosphere and the potential for life on the Hadean Earth.

Trail, D.; Catlos, E. J.; Harrison, T. M.; Mojzsis, S. J.

2004-01-01

343

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

344

Bearing capacity of the bucket spudcan foundation for offshore jack-up drilling platforms  

Microsoft Academic Search

To compare the bearing capacities of the traditional spudcan and the bucket spudcan, the effects of different type spudcans on the rigidity of pile legs and the entire bearing capacity were analyzed in detail. Through the loading method of Swipe and constant displacement, this paper plots the spatial failure envelopes of the vertical-horizontal load, vertical-moment load, vertical-horizontal-moment load of the

Puyang Zhang; Hongyan Ding

2011-01-01

345

On the Modelling of Foundations for Jack-up Units on Sand  

Microsoft Academic Search

This paper was selected for presentation by the OTC Program Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper, as presented, have not been reviewed by the Offshore Technology Conference and are subject to correction by the author(s). The material, as presented, does not necessarily reflect any position of the Offshore Technology

M. J. Cassidy; G. T. Houlsby

1999-01-01

346

Jack of one trade, master of none: host choice by Drosophila magnaquinaria  

Microsoft Academic Search

Host selection by phytophagous insects is generally thought to be based on chemical or nutritional characteristics of the host. This is especially true for monophagous insects. However, many other factors may influence host choice. The present study examines host selection by Drosophila magnaquinaria, whose sole host is the yellow skunk cabbage, Lysichitum americanum. Utilization of skunk cabbage was tested relative

T T Kibota; S P Courtney

1991-01-01

347

Light exposure during storage preserving soluble sugar and l-ascorbic acid content of minimally processed romaine lettuce (Lactuca sativa L.var. longifolia).  

PubMed

Minimally processed romaine lettuce (MPRL) leaves were stored in light condition (2500lux) or darkness at 4°C for 7d. Light exposure significantly delayed the degradation of chlorophyll and decrease of glucose, reducing sugar, and sucrose content, and thus preserved more total soluble solid (TSS) content at the end of storage in comparison with darkness. While, it did not influenced starch content that progressively decreased over time. The l-ascorbic acid (AA) accumulated in light-stored leaves, but deteriorated in dark-stored leaves during storage. The dehydroascorbic acid (DHA) increased in all leaves stored in both light and dark condition, of which light condition resulted in less DHA than darkness. In addition, the fresh weight loss and dry matter significantly increased and these increases were accelerated by light exposure. Conclusively, light exposure in applied intensity effectively alleviated MPRL quality deterioration by delaying the decreases of pigments, soluble sugar, TSS content and accumulating AA. PMID:23017423

Zhan, Lijuan; Hu, Jinqiang; Ai, Zhilu; Pang, Lingyun; Li, Yu; Zhu, Meiyun

2013-01-01

348

Held Hostage by Our Students, as Told by One of the Hostages: In Memory of Mr. Jack Ellison  

ERIC Educational Resources Information Center

The philosopher Emmanuel Levinas suggested that the most ethical act possible is the discovery that one has assumed responsibility for the other. In fact it is the other that makes possible the genuine exploration of the self, an act dominating the adolescent era of development. Although rarely appearing in educational literature, Levinas has…

Cottle, Thomas J.

2010-01-01

349

Variation in germination characteristics of some seed origins of Pinus wallichiana A B Jacks from the western Himalaya  

Microsoft Academic Search

Seeds of kail collected from 10 localities in the western Himalaya were germinated at 4 temperatures viz 20°, 28°, 34° and\\u000a 40°C after storage in dry cold conditions in freezer. The seed lots representing different localities differed in the capacity\\u000a and rate of germination. At lower temperature of incubation (20°C) most of the seed lots exhibited varying degree of dormancy.

R C Thapliyal; D P Uniyal; M S Rawat

1985-01-01

350

Is it important to know Jack? Using social network analysis to assess regional business connectivity in Bristol  

Microsoft Academic Search

This article attempts to measure the effect of ‘public sector brokerage’ in facilitating the interaction between enterprises in Bristol. In particular we examine the effectiveness of a public sector project through formal social network analysis. The data originates from a publicly funded consulting project measuring interaction between actors as a result of the Science City Bristol Initiative 2008–12. The remit

Tom Alcott; Dimitrios C. Christopoulos

2011-01-01

351

Species diversity and genetic variation of terrestrial lichens and bryophytes in a boreal jack pine forest of central Canada  

Microsoft Academic Search

Little is known about species diversity and genetic structure of populations of lichens and bryophytes in the Sandilands Provincial Forest in Manitoba. This study investigated the current species diversity of lichens and bryophytes in the area. It also examined the population structure and gene flow in the lichen (Cladonia arbuscula) with the highest cover and second most frequent occurrence, and

Rhonda Kotelko; Matthew Doering; Michele D. Piercey-Normore

2008-01-01

352

North and west central Texas. Mitchell EOR (enhanced oil recovery) projects yield tertiary oil in Wise and Jack counties  

Microsoft Academic Search

An enhanced oil recovery project utilizing a miscible LPG process provides Mitchell Energy and Development Corp. engineers with a springboard for other miscible flood projects while yielding incremental tertiary oil that otherwise would remain in the ground. The LPG flood project is in the Alvord (3,000-ft Strawn) Unit in Wise County, Texas. The field had been waterflooded for 14 yr,

Mickey

1982-01-01

353

Jack bean urease: the effect of active-site binding inhibitors on the reactivity of enzyme thiol groups.  

PubMed

In view of the complexity of the role of the active site flap cysteine in the urease catalysis, in this work we studied how the presence of typical active-site binding inhibitors of urease, phenylphosphorodiamidate (PPD), acetohydroxamic acid (AHA), boric acid and fluoride, affects the reactivity of enzyme thiol groups, the active site flap thiol in particular. For that the inhibitor-urease complexes were prepared with excess inhibitors and had their thiol groups titrated with DTNB. The effects observed were analyzed in terms of the structures of the inhibitor-urease complexes reported in the literature. We found that the effectiveness in preventing the active site cysteine from the modification by disulfides, varied among the inhibitors studied, even though they all bind to the active site. The variations were accounted for by different extents of geometrical distortion in the active site that the inhibitors introduced upon binding, leaving the flap either open in AHA-, boric acid- and fluoride-inhibited urease, like in the native enzyme or closed in PPD-inhibited urease. Among the inhibitors, only PPD was found to be able to thoroughly protect the flap cysteines from the further reaction with disulfides, this apparently resulting from the closed conformation of the flap. Accordingly, in practical terms PPD may be regarded as the most suitable inhibitor for active-site protection experiments in inhibition studies of urease. PMID:17418881

Krajewska, Barbara; Zaborska, Wies?awa

2007-10-01

354

Experimental investigation of the system behaviour of a model three-legged jack-up on clay  

Microsoft Academic Search

Results from combined loading experiments dedicated to evaluating the capacity and stiffness of a single footing have significantly improved the understanding of the response of circular shallow foundations. However, due to experimental practicalities, little corroborative evidence is available to confirm predicted behaviour when multiple footings act within a structural system. This paper addresses this concern by presenting the results of

George Vlahos; Mark J. Cassidy; Chris M. Martin

2008-01-01

355

Viability of alien and native seed banks after slash and burn: Effects of soil moisture, depth of burial and fuel load  

Microsoft Academic Search

Invasion by alien woody species is a major threat to biodiversity and ecosystem function in the Fynbos and Grassland Biomes of South Africa, and riparian areas are particularly affected. Large stands of the Australian Acacia longifolia have been cleared in catchments in the grassy fynbos of the Eastern Cape. After clearing mature stands of A. longifolia, the dead material is

M. Behenna; S. Vetter; S. Fourie

2008-01-01

356

The $19.95 Solution to Large Group Telephone Interviews with Special Speakers.  

ERIC Educational Resources Information Center

Describes an inexpensive solution for holding large-group telephone interviews, listing the equipment needed (record control, telephone, phone line with modular jack, portable amplifier with microphone-level input jack, audio cable with jack and plug compatible with the microphone input jack on the amplifier) and providing directions for setup.…

Robinson, George H.

1998-01-01

357

Enhanced Supervision. Part 1. Catch the Vision. Part 2. Case Study. The Jack Kaiser Story (VHS 1/2 inch) (Video).  

National Technical Information Service (NTIS)

Enhanced supervision is a model for probation officers to use when supervising offenders. Based on the Comprehensive Crime Control Act's stated goals for sentencing, it places new emphasis on probation officers developing a supervision plan for each offen...

1991-01-01

358

Identification of Host-Specificity Determinants in Betanodaviruses by Using Reassortants between Striped Jack Nervous Necrosis Virus and Sevenband Grouper Nervous Necrosis Virus  

Microsoft Academic Search

and the smaller genomic segment, RNA2 (1.4 kb), codes for the coat protein. Betanodaviruses have marked host specificity, although the primary structures of the viral RNAs and encoded proteins are similar among betanodaviruses. However, no mechanism underlying the host specificity has yet been reported. To evaluate viral factors that control host specificity, we first constructed a cDNA-mediated infectious RNA transcription

Tokinori Iwamoto; Yasushi Okinaka; Kazuyuki Mise; Koh-Ichiro Mori; Misao Arimoto; Tetsuro Okuno; Toshihiro Nakai

2004-01-01

359

A Response to Edwin Fenton. An Exchange of Views between Edwin Fenton and Jack R. Fraenkel, the Cognitive-Developmental Approach to Moral Education  

ERIC Educational Resources Information Center

Restatement of the author's criticisms of Fenton's article about Kohlberg's cognitive-developmental approach to moral education in the April 1976 issue of "Social Education." Emphasis is made that (1) Fenton's definitive summations of Kohlberg's works should be more tentative and cautious, because (2) some parts of moral developmental research are…

Fraenkel, Jack R.

1977-01-01

360

Growth response and water relations of 3-year-old planted black spruce and jack pine seedlings in site prepared lichen woodlands  

Microsoft Academic Search

Black spruce-lichen woodlands are low tree density stands within the closed crown, North American boreal forest that represent a diverging post-fire type of black spruce forest. As natural densification of lichen woodlands has never been observed, afforestation remains the only way of shifting these stands to closed canopy stands. The objective of the study was to evaluate site preparation effects

François Hébert; Jean-François Boucher; Pierre Y. Bernier; Daniel Lord

2006-01-01

361

A Heavy-Atom Isotope Effect and Kinetic Investigation of the Hydrolysis of Semicarbazide by Urease from Jack Bean (Canavalia ensiformis) †  

PubMed Central

A kinetic investigation of the hydrolysis of semicarbazide by urease gives a relatively flat log V/K vs. pH plot between pH 5 and 8. A log Vm vs. pH plot shows a shift of the optimum Vm toward lower pH when compared to urea. These results are explained in terms of the binding of the outer-N of the –NHNH2 group in semicarbazide to an active site residue with a relatively low pKa (?6). Heavy-atom isotope effects for both leaving groups have been determined. For the –NHNH2 side 15kobs = 1.0045, whereas for the –NH2 side 15kobs = 1.0009. This is evidence that –NHNH2 leaves prior to –NH2. Using previous data from the urease-catalyzed hydrolysis of formamide, the commitment factors for semicarbazide and urea hydrolysis are estimated as 2.7 and 1.2, respectively. The carbonyl-C isotope effect is 13kobs = 1.0357 which is consistent with the transition state occurring either during formation or breakdown of the tetrahedral intermediate.

Marlier, John F.; Fogle, Emily J.; Cleland, W.W.

2009-01-01

362

Nocturnal Feeding of Pacific Hake and Jack Mackerel off the Mouth of the Columbia River, 1998-2004: Implications for Juvenile Salmon Predation  

Microsoft Academic Search

Predation by piscivorous marine fishes has been hypothesized to be a primary source of marine mortality for Pacific Northwest juvenile salmon. During the springs and summers of 1998-2004, we collected predator and prey fishes (forage and juvenile salmonids) at the surface at night off the mouth of the Columbia River. Pacific hake Merluccius productus had relatively low percentages of empty

Robert L. Emmett; Gregory K. Krutzikowsky

2008-01-01

363

Jack of All Trades, Master of All: A Positive Association between Habitat Niche Breadth and Foraging Performance in Pit-Building Antlion Larvae  

Microsoft Academic Search

Species utilizing a wide range of resources are intuitively expected to be less efficient in exploiting each resource type compared to species which have developed an optimal phenotype for utilizing only one or a few resources. We report here the results of an empirical study whose aim was to test for a negative association between habitat niche breadth and foraging

Erez David Barkae; Inon Scharf; Zvika Abramsky; Ofer Ovadia

2012-01-01

364

Jack Healy Remembers - Anecdotal Evidence for the Origin of the Approximate 24-hour Urine Sampling Protocol Used for Worker Bioassay Monitoring  

SciTech Connect

The origin of the approximate 24-hour urine sampling protocol used at Hanford for routine bioassay is attributed to an informal study done in the mid-1940s. While the actual data were never published and have been lost, anecdotal recollections by staff involved in the initial bioassay program design and administration suggest that the sampling protocol had a solid scientific basis. Numerous alternate methods for normalizing partial day samples to represent a total 24-hour collection have since been proposed and used, but no one method is obviously preferred.

Carbaugh, Eugene H.

2008-10-01

365

Jack of all nectars, master of most: DNA methylation and the epigenetic basis of niche width in a flower-living yeast.  

PubMed

In addition to genetic differences between individuals as a result of nucleotide sequence variation, epigenetic changes that occur as a result of DNA methylation may also contribute to population niche width by enhancing phenotypic plasticity, although this intriguing possibility remains essentially untested. Using the nectar-living yeast Metschnikowia reukaufii as study subject, we examine the hypothesis that changes in genome-wide DNA methylation patterns underlie the ability of this fugitive species to exploit a broad resource range in its heterogeneous and patchy environment. Data on floral nectar characteristics and their use by M. reukaufii in the wild were combined with laboratory experiments and methylation-sensitive amplified polymorphism (MSAP) analyses designed to detect epigenetic responses of single genotypes to variations in sugar environment that mimicked those occurring naturally in nectar. M. reukaufii exploited a broad range of resources, occurring in nectar of 48% of species and 52% of families surveyed, and its host plants exhibited broad intra- and interspecific variation in sugar-related nectar features. Under experimental conditions, sugar composition, sugar concentration and their interaction significantly influenced the mean probability of MSAP markers experiencing a transition from unmethylated to methylated state. Alterations in methylation status were not random but predictably associated with certain markers. The methylation inhibitor 5-azacytidine (5-AzaC) had strong inhibitory effects on M. reukaufii proliferation in sugar-containing media, and a direct relationship existed across sugar?×?concentration experimental levels linking inhibitory effect of 5-AzaC and mean per-marker probability of genome-wide methylation. Environmentally induced DNA methylation polymorphisms allowed genotypes to grow successfully in extreme sugar environments, and the broad population niche width of M. reukaufii was largely made possible by epigenetic changes enabling genotype plasticity in resource use. PMID:22171717

Herrera, C M; Pozo, M I; Bazaga, P

2012-06-01

366

40 CFR Appendix A to Part 76 - Phase I Affected Coal-Fired Utility Units With Group 1 or Cell Burner Boilers  

Code of Federal Regulations, 2010 CFR

...MINNESOTA HIGH BRIDGE 6 NORTHERN STATES PWR. MISSISSIPPI JACK WATSON 4 MISSISSIPPI PWR CO. MISSISSIPPI JACK WATSON 5 MISSISSIPPI PWR CO. MISSOURI JAMES RIVER 5 SPRINGFIELD UTL. OHIO CONESVILLE 3 COLUMBUS...

2009-07-01

367

40 CFR Appendix A to Part 76 - Phase I Affected Coal-Fired Utility Units With Group 1 or Cell Burner Boilers  

Code of Federal Regulations, 2010 CFR

...MINNESOTA HIGH BRIDGE 6 NORTHERN STATES PWR. MISSISSIPPI JACK WATSON 4 MISSISSIPPI PWR CO. MISSISSIPPI JACK WATSON 5 MISSISSIPPI PWR CO. MISSOURI JAMES RIVER 5 SPRINGFIELD UTL. OHIO CONESVILLE 3 COLUMBUS...

2010-07-01

368

4. WEST SIDE WITH DOUBLE SASHED WINDOWS, FIRST FLOOR DOOR ...  

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

4. WEST SIDE WITH DOUBLE SASHED WINDOWS, FIRST FLOOR DOOR WITH JACK ARCHES, SECOND FLOOR DOOR WITH JACK ARCHES - Jansonist Colony, Colony Store & Post Office, Main & Bishop Hill Streets, Bishop Hill, Henry County, IL

369

22. Operating equipment: Hand wheel for control reversal, stick shift ...  

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

22. Operating equipment: Hand wheel for control reversal, stick shift for jaw clutches, indicators for the turning of the bridge, and raising/lowering jacks, jaw clutches for bridge and jacks, jaw clutches for bridge and jacks. - Seven Mile Bridge, Linking Florida Keys, Marathon, Monroe County, FL

370

Impact of an exotic N 2-fixing Acacia on composition and N status of a native Mediterranean community  

NASA Astrophysics Data System (ADS)

Nitrogen fixing plant species are among the most invasive species worldwide. However, field studies directly estimating the differential effect of native versus invasive exotic N 2-fixing plants on plant communities are lacking. The exotic leguminous shrub Acacia longifolia invades coastal dunes across Portugal often co-existing with the native N 2-fixer Stauracanthus spectabilis. Moreover, this co-existence with native species is possible due to a relatively low cover of Acacia species particularly in the south of Portugal where drought is intense. In this study we compare the impact of two different legume species (native and exotic) on the nitrogen status of a protected Mediterranean dune system. We document how presence of the exotic invader A. longifolia impacted community structure, soil properties and the foliar nitrogen concentrations and growth rates of native species. A. longifolia invaded areas had decreased biodiversity, fewer seedlings and altered soil properties (e.g., increased soil organic matter, NO 3- and NH 4+). A. longifolia presence was also associated with significant increases in foliar nitrogen content and ? 15N of the endemic shrub Corema album while presence of the native legume Stauracanthus spectabilis had no discernible impact on C. album. Furthermore, a strong correlation between increased foliar nitrogen and enhanced growth rates in C. album indicate a facilitative effect of A. longifolia on this native shrub. We posit that the combination of nitrogen fixation, a rapid growth rate and production of a thick litter layer result in a very substantial impact of the invader in invaded ecosystems.

Hellmann, Christine; Sutter, Rabea; Rascher, Katherine G.; Máguas, Cristina; Correia, Otilia; Werner, Christiane

2011-01-01

371

Canatoxin, a toxic protein from jack beans (Canavalia ensiformis), is a variant form of urease (EC 3.5.1.5): biological effects of urease independent of its ureolytic activity.  

PubMed Central

Canatoxin is a toxic protein from Canavalia ensiformis seeds, lethal to mice (LD(50)=2 mg/kg) and insects. Further characterization of canatoxin showed that its main native form (184 kDa) is a non-covalently linked dimer of a 95 kDa polypeptide containing zinc and nickel. Partial sequencing of internal peptides indicated homology with urease (EC 3.5.1.5) from the same seed. Canatoxin has approx. 30% of urease's activity for urea, and K(m) of 2-7 mM. The proteins differ in their affinities for metal ions and were separated by affinity chromatography on a Zn(2+) matrix. Similar to canatoxin, urease activates blood platelets and interacts with glycoconjugates. In contrast with canatoxin, no lethality was seen in mice injected with urease (10 mg/kg). Pretreatment with p-hydroxymercuribenzoate irreversibly abolished the ureolytic activity of both proteins. On the other hand, p-hydroxymercuribenzoate-treated canatoxin was still lethal to mice, and both treated proteins were fully active in promoting platelet aggregation and binding to glycoconjugates. Taken together, our data indicate that canatoxin is a variant form of urease. Moreover, we show for the first time that these proteins display several biological effects that are unrelated to their enzymic activity for urea.

Follmer, C; Barcellos, G B; Zingali, R B; Machado, O L; Alves, E W; Barja-Fidalgo, C; Guimaraes, J A; Carlini, C R

2001-01-01

372

Lead concentrations of herbs used in Van Herby cheese.  

PubMed

Van Herby Cheese is a traditional milk product including local herb species in eastern Turkey. This special milk product was previously produced only for the local market, but industrial scale production and marketing have recently started in the region. However, some quality characteristics such as microbial flora and heavy metal concentrations of this novel product need to be investigated. In this study, lead concentrations of 28 different herbs mostly used in Van Herby Cheese were analyzed by AAS. The highest lead concentration of 1.69 mg kg(-1) of the analyzed herbs was found in Mentha longifolia (L.) Hudson subsp. longifolia. PMID:22164786

Tuncturk, Murat; Tuncturk, Ruveyde; Sekeroglu, Nazim; Ertus, Mehmet M; Ozgokce, Fevzi

2011-10-01

373

Chemical characterisation of PM10 emissions from combustion in a closed stove of common woods grown in Portugal  

Microsoft Academic Search

A series of source tests were conducted to determine the wood elemental composition, combustion gases and the chemical constitution of PM10 emissions from the closed stove combustion of four species of woods grown in Portugal: Eucalyptus globulos, Pinus pinaster, Quercus suber and Acacia longifolia. The burning tests were made in a closed stove with a dilution source sampler. To ascertain

C. Gonçalves; C. Alves; C. Pio; M. Rzaca; C. Schmidl; H. Puxbaum

2009-01-01

374

Volatile oils in leaves of Bauhinia (Fabaceae Caesalpinioideae)  

Microsoft Academic Search

Leaves of seven species of Bauhinia (B. aculeata, B. alata, B. brevipes, B. forficata, B. longifolia, B. outimouta, B. pentandra, B. rufa and B. variegata) were submitted to volatile oil extraction by steam distillation. B. alata and B. outimouta, both of subgenus Phanera, failed to yield detectable volatile oils. Among the other species, all of subgenus Bauhinia, leaves of B.

Joaquim M Duarte-Almeida; Giuseppina Negri; Antonio Salatino

2004-01-01

375

Field Evaluation of Soybean Engineered with a Synthetic cry1Ac Transgene for Resistance to Corn Earworm, Soybean Looper, Velvetbean Caterpillar (Lepidoptera: Noctuidae), and Lesser Cornstalk Borer (Lepidoptera: Pyralidae)  

Microsoft Academic Search

A transgenic line of the soybean 'Jack', Glycine max (L.) Merrill, expressing a synthetic cry1Ac gene from Bacillus thuringiensis variety kurstaki (Jack-Bt), was evaluated for resistance to four lepidopteran pests in the field. Jack-Bt and genotypes serving as susceptible and resistant controls were planted in field cages and artificially infested with larvae of corn earworm, Helicoverpa zea (Boddie), and velvetbean

David R. Walker; John N. All; Robert M. McPherson; H. Roger Boerma; Wayne A. Parrott

2000-01-01

376

Controlled installation of spudcan foundations on loose sand overlying weak clay  

Microsoft Academic Search

Offshore jack-up rigs are often used for site exploration and oil well drilling. The footings of jack-up rigs are known as spudcan foundations. The risk of rapid uncontrolled penetration of spudcan in seabed (“punch-through”) exposes jack-ups to significant risk during installation in strong over weak layered seabeds. An example for this is a thin loose sand layer overlying a weaker

Gang Qiu; Sascha Henke

2011-01-01

377

Numerical Analysis of Pipe Roof Reinforcement in Soft Ground Tunnelling  

Microsoft Academic Search

Tunnel displacement causes deformation of the ground between the tunnel and the ground surface and hence results in subsidence at the ground surface. Jacked steel pipes are used to form a reinforced layer between the driven tunnel and the soil mass above the tunnel to reduce the potential surface settlement. The paper discusses the potential of using jacked steel pipes

W. L. Tan; P. G. Ranjith

378

Team Science Toolkit  

Cancer.gov

Skip to main content at the National Institutes of Health www.cancer.gov Home About Team Science About the Toolkit Discover Contribute Connect News & Events About Us Jack Pincus Edit resource 212 W. 10th Street, Suite A-470 Indianapolis, IN 46202 (317)489-4197 jack.pincus@selican.com Area

379

Comparison of the coat protein genes of five fish nodaviruses, the causative agents of viral nervous necrosis in marine fish  

Microsoft Academic Search

Striped jack nervous necrosis virus (SJNNV), a nodavirus, is the causative agent of viral nervous necrosis (VNN) in larval striped jack fish. In the present study, the SJNNV coat protein gene was sequenced and compared with that of four known insect nodaviruses and with four other fish nodaviruses causing VNN. The SJNNV coat protein gene was 1410 bases in length

Toyohiko Nishizawa; Koh-ichiro Mori; Makoto Furuhashi; Toshihiro Nakai; Iwao Furusawa; Kiyokuni Muroga

1995-01-01

380

Wanted: Low-Income High Achievers  

ERIC Educational Resources Information Center

This article deals with issues of community-college transfers of students from Alamance Community College to the University of North Carolina at Chapel Hill. This article discusses the involvement of the Jack Kent Cooke Foundation in the issue of community-college transfer. The Jack Kent Cooke Foundation, based in Lansdowne, Va., near Washington,…

Fischer, Karin

2007-01-01

381

77 FR 69498 - National Register of Historic Places; Notification of Pending Nominations and Related Actions  

Federal Register 2010, 2011, 2012, 2013

...12001000 Hill County Nolan River Bridge 303-4 of the Gulf, Colorado and Santa Fe Railway, Cty. Rd. 1127 at Nolan R., Blum, 12001001 Jack County Jack County Courthouse, 100 N. Main St., Jacksboro, 12001002 Potter County Fisk Medical Arts...

2012-11-19

382

Concluding remarks  

Microsoft Academic Search

Before starting on some remarks summarizing the meeting we have just completed, I would like to say a few words about one of the organizers. As we heard at the conference, Jack Leigh of the Australian National University has decided to retire in the very near future. Jack was a student of John Newton's at Manchester and then a postdoc

R. R. Betts

1997-01-01

383

Call of the Wild  

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; ...

Whaley, Mrs.

2009-04-19

384

The efficient evaluation of the hypergeometric function of a matrix argument  

Microsoft Academic Search

We present new algorithms that efficiently approximate the hypergeometric\\u000afunction of a matrix argument through its expansion as a series of Jack\\u000afunctions. Our algorithms exploit the combinatorial properties of the Jack\\u000afunction, and have complexity that is only linear in the size of the matrix.

Plamen Koev; Alan Edelman

2006-01-01

385

The Ontology of Performance in Stop Animation Kawamoto's House of Flame and Švankmajer's The Fall of the House of Usher  

Microsoft Academic Search

Judy clubs Punch with a mallet. Jack the Pumpkin King decides to take Santa's place one Christmas. Gumby foils the Blockheads' plans, yet again. In each of these cases, we as the audience focus our attention on the moving figures, finding pleasure in the characters and stories. Yet, though we focus our imaginative attention upon Jack dancing through Halloweentown, we

Laura Ivins-Hulley

386

Estimation of the rock mass deformation modulus using a rock classification system  

Microsoft Academic Search

It is often difficult to directly obtain specific design parameters of interest. In these situations, estimation based on empirical correlations is an alternative. The deformation modulus of a rock mass, which is important to know for engineering projects, is measured by in situ tests, such as plate bearing, flat jack, pressure chamber, borehole jacking and dilatometer tests. Nevertheless, these in

A. Khabbazi; M. Ghafoori; G. R. Lashkaripour; A. Cheshomi

2012-01-01

387

Report: nutrient evaluation and elemental analysis of four selected medicinal plants of soon valley Khushab, Punjab, Pakistan.  

PubMed

To check the nutritional and mineral contents of four medicinal plants viz., Peganum hermla, Solanum nigrum, Mentha longifolia, Achryanthus aspera, which are used as medicine traditionally in Soon Valley Khushab, Pakistan. Proximate analysis of plant sample determined that protein (7.491%) and ash (22.79%) was highest in Mentha longifolia, carbohydrate (75.23%) in Peganum hermla, fats (12.595%) and moisture (6.82%) was highest in Achryanthus aspera. In comparative assessment of the various species, the results showed that Achryanthus aspera. is the most significant species having higher concentrations of fat, fibre values compared to the other species. Absorption Spectrometric method was used for the elemental analysis of essential elements such as Fe, Cd, Cu,Mn, Pb, Cr, Ni and Na in medicinal plants in different range. PMID:24811823

Ghani, Abdul; Ali, Zulfiqar; Islam, Tahir; Sanaullah, Samreen; Saeed, Sadia

2014-05-01

388

Evaluation of some plants used in Turkish folk medicine against parasitic infections for their in vivo anthelmintic activity.  

PubMed

Ethanolic and aqueous extracts obtained from nine plant species from seven families selected depending on their use in Turkish folk medicine, including Citrillus lanatus (Thunb.) Matsum. (seed), Jasminum fruticans L. (branches), Juniperus drupacea Labill. (fruits), Juniperus nana L. (fruit and leaves), Juniperus oxcycedrus L (fruit and leaves), Mentha longifolia L. (herba), Pinus nigra ssp. pallasiana (Lamb.) Richt. (fruits), Plantago lanceolata L. (leaves), and Zea mays L. (seed) were evaluated for their in vivo anthelmintic activity. Among the plant extracts studied, both ethanolic and aqueous extracts of Jasminum fruticans, Mentha longifolia and Pinus nigra ssp. pallasiana, the aqueous extracts of Zea mays, the ethanolic extracts of Citrillus lanatus, Juniperus drupacea (fruit), Juniperus oxcycedrus and Plantago lanceolata displayed significant anthelmintic activity against pinworms, Syphacia obvelata and Aspiculuris tetraptera, in mice. Rest of the extracts from plants did not show any remarkable anthelmintic activity. The results were considered significant at p<0.05. PMID:16790330

Kozan, Esma; Küpeli, Esra; Yesilada, Erdem

2006-11-24

389

The effect of hydro alcoholic extract of seven plants on cariogenic bacteria-an in vitro evaluation.  

PubMed

Aim: To compare the antibacterial effect of hydro alcoholic extract of Salvia officinalis, Pimpinella anisum, Satureja hortensis, Rhus coriaria, Carum copticum, Mentha longifolia, Achillea millefolium against Streptococcus mutans, Lactobacillus rhamnosus and Actinomyces viscosus through two in vitro methods. Methods: In this experimental study, hydro-alcoholic extracts have been prepared from the shoot of Salvia officinalis, Satureja hortensis, Mentha longifolia and Achillea millefolium, the seed of Pimpinella anisum and Carum copticum and the fruit of Rhus coriaria with maceration method. Their antibacterial activity against Streptococcus mutans, Lactobacillus rhamnosus and Actinomyces viscosus have been evaluated with broth macrodilution and agar diffusion methods. Results: In Broth macrodilution method MIC (Minimum Inhibitory Concentration) of Pimpinella anisum, Salvia officinalis, Mentha longifolia, Achillea millefolium, Satureja hortensis, Carum copticum and Rhus coriaria for Streptococcus mutans were respectively 12.5, 6.25, 12.5, 50, 50, 12.5 and 50 ?g/ml, for Lactobacillus rhamnosus 12.5, 1.56, 3.12, 12.5, 6.25, 6.25 and 6.25 ?g/ml and for Actinomyces viscosus 50, 12.5, 100, 50, 100, 25 and 25 ?g/ml. In Agar diffusion method Pimpinella anisum, Salvia officinalis and Rhus coriaria against Streptococcus mutans, Pimpinella anisum, Carum copticum and Rhus coriaria against Lactobacillus rhamnosus and Mentha longifolia, Rhus coriaria and Carum copticum against Actinomyces viscosus had antibacterial effects. Conclusion: All seven extracts had growth inhibitory effects on all three bacteria. Salvia officinalis had the greatest inhibitory effect on growth of all three bacteria. All of the extracts except Carum copticum had bactericidal effect in the range of concentration. By agar diffusion method Rhus coriaria had antibacterial effect against all three cariogenic bacteria. PMID:24984654

Kermanshah, Hamid; Kamangar, Sedighe Sadat Hashemi; Arami, Sakine; Kamalinegad, Mohammad; Karimi, Mehrdad; Mirsalehian, Akbar; Jabalameli, Fereshte; Fard, Mohammad Javad Kharazi

2014-06-01

390

Nutrient dynamics in integrated aquaculture–hydroponics systems  

Microsoft Academic Search

Changes in concentrations of dissolved Ca, Cu, Fe, K, Mg, Mn, NO3-N, Na, P, and Zn, as a function of increasing biomass of Nile tilapia (Oreochromis niloticus) fed a commercial diet in integrated aquaculture–hydroponic systems growing romaine lettuce (Lactuca sativa longifolia cv. Jericho), were monitored over three, 28-day experimental trials. The integrated systems, 320–330 l in volume, were filled initially

Damon E Seawright; Robert R Stickney; Richard B Walker

1998-01-01

391

Community 15N isoscapes to resolve plant-plant-interactions at the spatial scale  

NASA Astrophysics Data System (ADS)

Isoscapes have greatly improved our ability to understand biogeochemical processes on continental to global scales. However, the isoscapes framework may also have significant potential to resolve the spatial component of within-community interactions. For example, exotic plant invaders often exert strong impacts on ecosystem functioning, particularly regarding water-, carbon- and nutrient-cycles, but the spatial extent of such alterations is largely unknown. Here we show that massive N input by the N2-fixing exotic invasive Acacia longifolia to a Portuguese dune system can be traced using spatially resolved information on native plants' leaf ?15N. We found isotopic signatures of N to differ strongly between the native system (?15N c. -10 o) and the atmospherically derived N in A. longifolia phyllodes (?15N c. 0 o). Thus, sources of N for native plants could be readily distinguished. Leaf ?15N of a native, non-fixing species was increasingly enriched the closer the plant grew to the invader, indicating uptake of fixed N provided by A. longifolia. The enrichment was evident far beyond the stands of the invader, demonstrating that A. longifolia affected N budgets of native species up to a distance of 8 m exceeding the margin of the canopy. Furthermore, using the isoscapes approach, we were able to quantify the total area of N enrichment and could thus show that the area affected by invasion was at least 3.5 times larger than the area actually occupied by the invader. However, a native N2-fixing species had no such effects. Thus, downscaling isoscapes to the community level opens new frontiers in quantifying the spatial dimension of functional changes associated with plant invasions. Moreover, considering the feasibility and applicability of this approach, it may provide a promising tool to identify, quantify and monitor different types of functional plant-plant interactions within communities at a spatially explicit scale.

Hellmann, Christine; Rascher, Katherine G.; Máguas, Cristina; Werner, Christiane

2014-05-01

392

Screening of chemical composition, antimicrobial and antioxidant activities of Artemisia essential oils  

Microsoft Academic Search

The chemical composition of essential oils isolated from aerial parts of seven wild sages from Western Canada –Artemisia absinthium L., Artemisia biennis Willd., Artemisia cana Pursh, Artemisia dracunculus L., Artemisia frigida Willd., Artemisia longifolia Nutt. and Artemisia ludoviciana Nutt., was investigated by GC–MS. A total of 110 components were identified accounting for 71.0–98.8% of the oil composition. High contents of

Daíse Lopes-Lutz; Daniela S. Alviano; Celuta S. Alviano; Paul P. Kolodziejczyk

2008-01-01

393

Snails and slugs damaging the cut foliage, Cordyline fruticosa and use of biorationals towards their management.  

PubMed

Snails and slugs became a serious molluscan pests and damaging leaves of purple compacta, Cordyline fruticosa extensively grown for export at Green Farm Ltd, Sri Lanka. The export quality of leaves of C. fruticosa is lowered due to feeding of snails, Achantina fulica (Bowditch), Opeas pyrgula Schmacker and Boettgerx and Helix aspersa Muller and slugs incurring great loss to cut foliage industry. Paucity of information is available to understand snails and slugs damage and their host range that limits to develop suitable management practices. Therefore this study was aimed to determine damage, alternate hosts and to develop possible management practices. Snails and slugs damaged mainly fresh leaves of C. fruticosa. The severity of damage was 44.5% in infested field based on the visual rating method. Leaves of cassava, sting bean, okra, cucumber, passion fruit, papaya, Glyricidia and shoe flower were identified as alternate hosts and neem, Ixora and Dracaena spp were not served as alternate hosts. Among the plant materials tested for their repellence against snails and slugs revealed that neem seed powder was an irritant; neem leaves, mint leaves and Lantana leaves were acted as anti-feedant and Salt as chemical repellent. Among the barrier and bait experiments Bordeaux mixture exhibited a significant barrier effect against horizontal movement of snails. Baits made out of Metaldehyde bait, vegetables bait and jaggery had a strong effect in repelling the snails and slugs. Mulching with Madhuca longifolia punnac was the best to reduce the snails and slugs population compared to M. longifolia seed kernel powder. Oil from M. longifolia failed to reduce their population. Hence the results revealed that saponin containing M. longifolia punnac helped to eliminate snails and slugs when used as mulch. Metaldehyde, vegetable and jaggery baits are also useful to minimize their colonization further. Hence combination of these methods will help to prevent snails and slugs from damaging C. fruticosa and benefit to the cut foliage industry to sustain its export quality. PMID:23885439

Karthiga, S; Jegathambigai, V; Karunarathne, M D S D; Svinningen, A; Mikunthan, G

2012-01-01

394

Plasma Membrane Na+ Transport in a Salt-Tolerant Charophyte (Isotopic Fluxes, Electrophysiology, and Thermodynamics in Plants Adapted to Saltwater and Freshwater).  

PubMed Central

In salt-tolerant Chara longifolia, enhanced Na+ efflux plays an important role in maintaining low cytoplasmic Na+. When it is cultured in fresh water (FW), C. longifolia has a higher Na+ efflux than the obligate FW Chara corallina, although pH dependence and inhibitor profiles are similar for both species (J. Whittington and M.A. Bisson [1994] J Exp Bot 45: 657-665). When it is cultured in saltwater, C. longifolia has a Na+ efflux of 264 [plus or minus] 14 nmol m-2 s-1 at pH 7, 13 times higher than FW-adapted cultures and 31 times higher than C. corallina. As in FW-adapted plants, efflux is highest at pH 5, but pH dependence is less steep and more linear in cells adapted to saltwater. In plants of both species from FW cultures, Na+ efflux is inhibited by Li+ at pH 5 but not at pH 7 or 9, whereas in the salt-adapted C. longifolia, Li+ inhibits Na+ efflux at pH 7 and 9 but not at pH 5. Amiloride inhibits Na+ efflux in salt-adapted cells but not in FW cells. We conclude that a new type of Na+ efflux system is induced in salt-adapted plants, although both systems have characteristics suggestive of a Na+/H+ antiport. In all cases, a 1:1 Na+/H+ antiport would have sufficient energy to maintain the cytoplasmic Na+ activities measured at pH 5 and 7 but not at pH 9, which suggests that another efflux system must be operating at pH 9.

Kiegle, E. A.; Bisson, M. A.

1996-01-01

395

OBSERVATIONS ON NESTING ECOLOGY OF BLACK-HEADED MUNIA (LONCHURA MALACCA MALACCA)  

Microsoft Academic Search

The study, undertaken during 1994-97, highlights that the Black-headed Munia (Lonchura malacca malacca) could find suitable nesting sites in Ramatirtha due to environmental enrichment in the enclosures for mugger crocodile. The Black-headed Munias used five main species of trees for roosting,viz. Alstonia scholaris, Acacia auriculaeformis, Azadiracta indica, Polyalthia longifolia and Anacardium occidentale from June to November. The nests were situated

L. A. K. Singh; S. S. Srivastava; S. D. Rout

396

Cadmium-enriched sewage sludge application to acid and calcareous soils: effect on yield and cadmium uptake by lettuce and chard  

Microsoft Academic Search

Eight soils with pH values ranging from 4.8 to 7.8 were treated with 1% sewage sludge amended with variable amounts of CdSOâ. The concentration of Cd in the soils ranged from 0.1 to 320 ..mu..g Cd\\/g. Lettuce (Lactuca sativa var. longifolia) and Swiss chard (Beta vulgaris var. cicla) were grown to maturity in pot cultures on the treated soils to

R. J. Mahler; F. T. Bingham; A. L. Page

1978-01-01

397

Chemical composition and larvicidal evaluation of Mentha , Salvia , and Melissa essential oils against the West Nile virus mosquito Culex pipiens  

Microsoft Academic Search

The volatile metabolites of wild-growing Mentha spicata, M. longifolia, M. suaveolens, Melissa officinalis, Salvia fruticosa, S. pomifera subsp. calycina, and S. pomifera subsp. pomifera from Greece were determined by gas chromatography and gas chromatography–mass spectrometry. The insecticidal properties of\\u000a the analyzed essential oils were screened on Culex pipiens larvae. Additionally two of the main components of the essential oils, piperitenone

George Koliopoulos; Danae Pitarokili; Elias Kioulos; Antonios Michaelakis; Olga Tzakou

2010-01-01

398

Trapping and Transportation of Adult and Juvenile Salmon in the Lower Umatilla River in Northeast Oregon: Umatilla River Basin Trap and Haul Program, October 1994-September 1995.  

SciTech Connect

Threemile Falls Dam (Threemile Dam), located near the town of Umatilla, is the major collection and counting point for adult salmonids returning to the Umatilla River. Returning salmon and steelhead were collected at Threemile Dam from August 26, 1994 to June 27, 1995. A total of 1,531 summer steelhead (Oncorhynchus mykiss); 688 adult, 236 jack, and 368 subjack fall chinook (O. tshawvtscha); 984 adult and 62 jack coho (O. kisutch) ; and 388 adult and 108 jack spring chinook (O. tshawvtscha) were collected. All fish were trapped at the east bank facility. Of the fish collected, 971 summer steelhead; 581 adult and 27 jack fall chinook; 500 adult and 22 jack coho; and 363 adult and 61 jack spring chinook were hauled upstream from Threemile Dam. There were also 373 summer steelhead; 12 adult, 186 jack and 317 subjack fall chinook; 379 adult and 32 jack coho; and 15 adult and one jack spring chinook released at Threemile Dam. In addition, 154 summer steelhead were hauled to Bonifer and Minthorn for brood. The Westland Canal facility, located near the town of Echo, is the major collection point for outmigrating juvenile salmonids and steelhead kelts. The facility operated for a total of 179 days between December 2, 1994 and July 19, 1995. During that period, fish were bypassed back to the river 137 days and were trapped 42 days. Three steelhead kelts and an estimated 1,560 pounds of juvenile fish were transported from the Westland Canal trap to the Umatilla River boat ramp at rivermile 0.5. Approximately 98% of the fish transported this year were salmonids. The Threemile Dam west bank juvenile bypass began operating March 25, 1995 and was closed on June 16, 1995. The juvenile trap was operated by Oregon Department of Fish and Wildlife research personnel from April 1, 1995 through the summer to monitor juvenile outmigration.

Zimmerman, Brian C.; Duke, Bill B.

1995-09-01

399

51. LAUNCH CREW IN FRONT OF BARGE ON RAIL BUGGIES. ...  

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

51. LAUNCH CREW IN FRONT OF BARGE ON RAIL BUGGIES. (LEFT OT RIGHT: DALE WILBURN, GENE EVERLY, TIM DOEPELHEUER, JACK ROBERTS, JAMES REARICK, STEVE RAKUSKIN) - Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsville, Fayette County, PA

400

The Branch/Terminal Issue, Part II. Testimony Presented to the National Commission on Electronic Fund Transfers, October 29, 1976.  

National Technical Information Service (NTIS)

The following witnesses testified on the branch/terminal issue in EFT (Electronic Funds Transfer): Jack Guttentag and Mark Flannery, Wharton School of Finance; Daniel Prives, Harvard Program on Information Resources Policy; James Smith, former Comptroller...

1977-01-01

401

Investigation of Loss of Well Control Eugene Island Block 107, Well B-1 Workover OCS-G 15241, 8 March 2003, Gulf of Mexico, Off the Louisiana Coast.  

National Technical Information Service (NTIS)

In March 2003, the Pride Offshore Drilling, Inc. (hereinafter referred to as Contractor or Pride) jack-up rig Pride New Mexico (hereinafter referred to as the Rig) was engaged in workover operations for Anadarko Petroleum Corporation (hereinafter referred...

J. Williams M. Rinaudo T. Basey

2004-01-01

402

1. Long distance view looking NE up the East River. ...  

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

1. Long distance view looking NE up the East River. Jack Boucher, photographer, 1978. - Brooklyn Bridge, Spanning East River between Park Row, Manhattan and Sands Street, Brooklyn, New York, New York County, NY

403

RED Facts: Zinc Phosphide.  

National Technical Information Service (NTIS)

This fact sheet summarizes the information in the RED document for reregistration case 0026, zinc phosphide. Zinc phosphide is a rodenticide used to control gophers, mice, rats, lagomorphs (e.g. jack rabbits), prairie dogs, and squirrels.

1998-01-01

404

12. Historic American Buildings Survey Rendering by C. Howard Crane ...  

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

12. Historic American Buildings Survey Rendering by C. Howard Crane Office, 1919. Courtesy Detroit Historical Society. Photocopy by Jack E. Boucher, 1973 PERSPECTIVE VIEW FROM SOUTH - Orchestra Hall, 3711 Woodward Avenue, Detroit, Wayne County, MI

405

6. BOAT TUNNEL AND NAVIGATION LOCK FROM THE MERRIMACK RIVER ...  

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

6. BOAT TUNNEL AND NAVIGATION LOCK FROM THE MERRIMACK RIVER INTO THE NORTHERN CANAL. VIEW IS LOOKING NORTHEAST TO THE CANAL: Jack Boucher, Photographrer 1976 - Northern Canal, Pawtucket & Ford Streets vicinity, Lowell, Middlesex County, MA

406

77 FR 37941 - Order Granting a Limited Exemption From Exchange Act Rule 10b-17 to Certain Actively Managed...  

Federal Register 2010, 2011, 2012, 2013

...Return Exchange-Traded Fund (March 1, 2012) and Letter from Josephine J. Tao, Assistant Director to Jack P. Drogin, Schiff Hardin regarding WisdomTree Emerging Markets Corporate Bond Fund (April 16,...

2012-06-25

407

Asperger Syndrome and High Functioning Autism Tool Kit  

MedlinePLUS

... book Asperger Syndrome and Difficult Moments by Brenda Smith Myles and Jack Southwick, the authors illustrate social ... 08 Speech 4 sessions - 30 min each Jane Smith - 2 sessions Will call me back can start ...

408

A Touchy Question for Trainers: Are You Guilty of Copyright Rip Off?  

ERIC Educational Resources Information Center

Presents an interview with Jack L. Copeland, President of Training Media Distributors Association on training and the copyright-piracy problem. Discusses video piracy and other unauthorized uses of materials in relation to the new copyright law. (CSS)

Training, 1979

1979-01-01

409

13. Historic American Buildings Survey Manning Brothers, Detroit, Photographers, circa ...  

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

13. Historic American Buildings Survey Manning Brothers, Detroit, Photographers, circa 1920. Courtesy Save Orchestra Hall, Inc. Photocopy by Jack E. Boucher, 1973 AUDITORIUM, LOOKING NORTH - Orchestra Hall, 3711 Woodward Avenue, Detroit, Wayne County, MI

410

11. Historic American Buildings Survey Manning Brothers, Detroit, Photographers, circa ...  

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

11. Historic American Buildings Survey Manning Brothers, Detroit, Photographers, circa 1920. Courtesy Save Orchestra Hall, Inc. Photocopy by Jack E. Boucher, 1973 EAST (FRONT) AND SOUTH ELEVATIONS - Orchestra Hall, 3711 Woodward Avenue, Detroit, Wayne County, MI

411

Naval Forces, Vietnam Monthly Historical Summary for March 1966.  

National Technical Information Service (NTIS)

Contents for March 1966: Coastal Surveillance Force: Soirap River Patrol, Operation JACK STAY, Operation BROWN BEAR II, Operation SOUTH WIND, Operation TEE SHOT II, PCF, WPB, Aerial Surveillance, Hydrographic; River Patrol Force: PSR, MSB, Base Constructi...

1966-01-01

412

Four Republican Presidential Candidates Debate Educational Issues.  

ERIC Educational Resources Information Center

Provides the transcript of a September 1987 debate on educational issues between Republican presidential candidates Jack Kemp and Pierre du Pont. Interspersed throughout the transcript are written responses to questions submitted to additional candidates Robert Dole and George Bush. (BJV)

Equity and Excellence, 1988

1988-01-01

413

29 CFR 1926.300 - General requirements.  

Code of Federal Regulations, 2012 CFR

...any part of his body in the danger zone during the operating cycle. (iii) Special handtools for placing and removing material...vibrators, concrete breakers, powered tampers, jack hammers, rock drills, and similar hand operated power tools. [44...

2012-07-01

414

29 CFR 1926.300 - General requirements.  

Code of Federal Regulations, 2010 CFR

...any part of his body in the danger zone during the operating cycle. (iii) Special handtools for placing and removing material...vibrators, concrete breakers, powered tampers, jack hammers, rock drills, and similar hand operated power tools. [44...

2010-07-01

415

29 CFR 1926.300 - General requirements.  

Code of Federal Regulations, 2011 CFR

...any part of his body in the danger zone during the operating cycle. (iii) Special handtools for placing and removing material...vibrators, concrete breakers, powered tampers, jack hammers, rock drills, and similar hand operated power tools. [44...

2011-07-01

416

50 CFR 660.502 - Definitions.  

Code of Federal Regulations, 2010 CFR

...otherwise. Coastal pelagic species (CPS) means northern anchovy (Engraulis mordax ), Pacific mackerel (Scomber japonicus...committee established by the Council. Finfish means northern anchovy, Pacific mackerel, Pacific sardine, and jack...

2009-10-01

417

50 CFR 660.502 - Definitions.  

Code of Federal Regulations, 2010 CFR

...otherwise. Coastal pelagic species (CPS) means northern anchovy (Engraulis mordax ), Pacific mackerel (Scomber japonicus...committee established by the Council. Finfish means northern anchovy, Pacific mackerel, Pacific sardine, and jack...

2010-10-01

418

The Big Pumpkin Count.  

ERIC Educational Resources Information Center

Pumpkin seeds are counted after students convert pumpkins to jack-o-lanterns. Among the activities involved, pupils learn to count by 10s, make estimates, and to construct a visual representation of 1,000. (MP)

Coplestone-Loomis, Lenny

1981-01-01

419

77 FR 14420 - Landmarks Committee of the National Park System Advisory Board Meeting  

Federal Register 2010, 2011, 2012, 2013

...BLACK JACK BATTLEFIELD, Douglas County, KS Kentucky CAMP NELSON HISTORIC AND ARCHEOLOGICAL DISTRICT, Jessamine County, KY...Wall Township, NJ New Mexico (also in Colorado) DENVER & RIO GRANDE RAILROAD SAN JUAN EXTENSION (CUMBRES & TOLTEC...

2012-03-09

420

NIH Study Offers Insight into Why Cancer Incidence Increases with Age  

MedlinePLUS

... Jack Taylor, M.D., Ph.D., describes how DNA methylation may increase cancer risk in older people ... increases cancer risk remains unclear. Researchers suspect that DNA methylation, or the binding of chemical tags, called ...

421

Cascade Volcanoes  

USGS Multimedia Gallery

The volcanoes from closest to farthest are Mt. Washington, Three Fingered Jack, Mt. Jefferson. This picture is taken from Middle Sister looking north in the Cascade Range, Three Sisters Wilderness Area, Deschutes National Forest, Oregon....

2009-12-08

422

Manitoba  

article title:  Fire in the Land of 100,000 Lakes     View Larger Image ... conifer forests, deciduous broadleaved forests, fens, and lakes. Tree species found within the area include white and black spruce, jack ...

2013-04-17

423

77 FR 6563 - Ocean Transportation Intermediary License; Applicants  

Federal Register 2010, 2011, 2012, 2013

...Services, Ltd. dba Dolphin Line dba Globe, Express Services (Overseas Group) (NVO & OFF), 8025 Arrowridge Blvd., Charlotte, NC 28273. Officers: Jack (John) LaVee, Vice President Operations (Qualifying Individual), Ziad R. Korban,...

2012-02-08

424

Science student experimenter Todd Nelson with STS-3 crew Lousma and Fullerton  

NASA Technical Reports Server (NTRS)

Science student experimenter Todd Nelson meets with STS-3 crew Commander Jack R. Lousma, left, and Pilot C. Gordon Fullerton to discuss his experiment 'Insects in flight motion study' during a press briefing in JSC's public affairs facility.

1982-01-01

425

16 CFR 1501.2 - Scope.  

Code of Federal Regulations, 2010 CFR

...and carousels; jacks-in-the-box; stuffed, plush, and flocked animals and other figures; preschool toys, games and puzzles intended for use by children under 3; riding toys intended for use by children under 3; infant and juvenile...

2011-01-01

426

16 CFR 1501.2 - Scope.  

Code of Federal Regulations, 2010 CFR

...and carousels; jacks-in-the-box; stuffed, plush, and flocked animals and other figures; preschool toys, games and puzzles intended for use by children under 3; riding toys intended for use by children under 3; infant and juvenile...

2012-01-01

427

75 FR 17402 - South Carolina Public Service Authority; Notice of Applications for Amendment of License and...  

Federal Register 2010, 2011, 2012, 2013

...reclassification are in Berkeley and Clarendon counties, South Carolina. g. Filed...the subdivision; Potato Creek Area in Clarendon County (-219), two acres from...by the USFWS; Jack's Creek Area in Clarendon County (-220), approximately...

2010-04-06

428

75 FR 63088 - RIN 1018-AW77  

Federal Register 2010, 2011, 2012, 2013

...Fish and Wildlife Service, Attention: Peter J. Probasco, Office of Subsistence Management...these regulations under the guidance of Peter J. Probasco of the Office of Subsistence...Office, Bureau of Indian Affairs; Jerry Berg and Carl Jack, Alaska Regional...

2010-10-14

429

56. ARAII. View inside reactor building looking at SL1 reactor ...  

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

56. ARA-II. View inside reactor building looking at SL-1 reactor vessel. November 19, 1957. Ineel photo no. 57-5864. Photographer: Jack L. Anderson. - Idaho National Engineering Laboratory, Army Reactors Experimental Area, Scoville, Butte County, ID

430

2. Fountain without its gazebo, taken February 16, 1961, eight ...  

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

2. Fountain without its gazebo, taken February 16, 1961, eight years before its removal. Photographed by Jack E. Boucher. - Sons of Temperance Fountain, Independence Square (moved from Centennial Exhibition grounds at Belmont & Fountain Avenues), Philadelphia, Philadelphia County, PA

431

77 FR 74841 - Alabama Power Company; Notice of Application for Amendment of License and Soliciting Comments...  

Federal Register 2010, 2011, 2012, 2013

...Commission approval to grant Jack's Family Restaurant, a fast food restaurant, a permit to use project lands and waters for...locations would be for use by patrons who access the restaurant by boat. l. Locations of the...

2012-12-18

432

78 FR 32248 - Notice of Receipt of a Request to Voluntarily Cancel Certain Pesticide Registrations  

Federal Register 2010, 2011, 2012, 2013

...Kilmos PF Mosquito Repellent Coils. 5178-10...Kilmos PF Mosquito Repellent Sticks. 8848-72...Black Jack DS205 Insect Killer. 9688-230...Spira Area Mosquito Repellent. 43917-8...Chem-Tox Insect Spray....

2013-05-29

433

78 FR 57388 - Product Cancellation Order for Certain Pesticide Registrations  

Federal Register 2010, 2011, 2012, 2013

...Kilmos PF Mosquito Repellent Coils. 5178-10...Kilmos PF Mosquito Repellent Sticks. 8848-72...Black Jack DS205 Insect Killer. 9688-230...Spira Area Mosquito Repellent. 43917-8...Chem-Tox Insect Spray....

2013-09-18

434

Career of the Month: Foodborne Disease Epidemiologist  

NSDL National Science Digital Library

Did you know that Salmonella and E. coli are just two of more than 250 different identified foodborne diseases? To Jack Guzewich, a Foodborne Disease Epidemiologist with the Food and Drug Administration's (FDA) Center for Food Safety and Applied Nutrition, every outbreak is a new mystery. The mysteries unravel as he discovers how foods become contaminated and works to prevent similar outbreaks in the future. Your students will be intrigued by Jack Guzewich and his fascinating career.

Sullivan, Megan

2005-09-01

435

Child's Letter to President John F. Kennedy about Physical Fitness  

ERIC Educational Resources Information Center

On March 3, 1963, nine-year-old Jack Chase of Torrance, California, wrote a letter to President John F. Kennedy. In his single-page note, featured in this article, Jack described his plans for staying physically fit. He said he would walk to school, the store, and the library "because I know a strong boy makes a strong man and a strong man makes a…

McNatt, Missy

2009-01-01

436

BOREAS TF-4 CO2 and CH4 Chamber Flux Data from the SSA  

NASA Technical Reports Server (NTRS)

The BOREAS TF-4 team measured fluxes of CO2 and CH4 across the soil-air interface in four ages of jack pine forest at the BOREAS SSA during August 1993 to March 1995. Gross and net flux of CO2 and flux of CH4 between soil and air are presented for 24 chamber sites in mature jack pine forest, 20-year-old, 4-year-old, and clear cut areas. The data are stored in tabular ASCII files.

Anderson, Dean; Striegl, Robert; Wickland, Kimberly; Hall, Forrest G. (Editor); Conrad, Sara (Editor)

2000-01-01

437

Kinetics studies on triacontanyl palmitate: a urease inhibitor  

Microsoft Academic Search

The mechanism of inhibition of jack bean and Bacillus pasteurii ureases was investigated by triacontanyl palmitate (1) which is a long-chain fatty ester and has been isolated from Symplocos racemosa Roxb. Lineweaver–Burk, Dixon plots, and their secondary replots showed that 1 is a non-competitive inhibitor of these enzymes. Ki values were found to be 60.03?±?1.72 and 88.23?±?0.31?µM against jack bean

Muhammad Arif Lodhi; Muhammad Athar Abbasi; Muhammad Iqbal Choudhary; Viqar Uddin Ahmad

2007-01-01

438

Regional discrimination studies: Phase III. Scientific report No. 3  

SciTech Connect

This report consists of three parts. Part 1, `Construction of Regional Ground Truth Data Bases Using Seismic And Infrasound Data` is by Gordon Sorrells, Eugene Herrin, and Jessie Bonner with contributions from Jack Swanson, Sarah Deering and Angela Maddox. Part 2, `Seismic And Infrasound Data Observations At TXAR` is by Jessie Bonner, Sarah Deering, Tao Liu, Jack Swanson and Ileana Tibuleac. Part 3, consists of the Acknowledgments called for by the contract.

Bonner, J.; Herrin, E.; Sorrells, G.G.

1997-03-01

439

Effect of water stress and fungal inoculation on monoterpene emission from an historical and a new pine host of the mountain pine beetle.  

PubMed

The mountain pine beetle (Dendroctonus ponderosae, MPB) has killed millions of lodgepole pine (Pinus contorta) trees in Western Canada, and recent range expansion has resulted in attack of jack pine (Pinus banksiana) in Alberta. Establishment of MPB in the Boreal forest will require use of jack pine under a suite of environmental conditions different from those it typically encounters in its native range. Lodgepole and jack pine seedlings were grown under controlled environment conditions and subjected to either water deficit or well watered conditions and inoculated with Grosmannia clavigera, a MPB fungal associate. Soil water content, photosynthesis, stomatal conductance, and emission of volatile organic compounds (VOCs) were monitored over the duration of the six-week study. Monoterpene content of bark and needle tissue was measured at the end of the experiment. ?-Phellandrene, the major monoterpene in lodgepole pine, was almost completely lacking in the volatile emission profile of jack pine. The major compound in jack pine was ?-pinene. The emission of both compounds was positively correlated with stomatal conductance. 3-Carene was emitted at a high concentration from jack pine seedlings, which is in contrast to monoterpene profiles of jack pine from more southern and eastern parts of its range. Fungal inoculation caused a significant increase in total monoterpene emission in water deficit lodgepole pine seedlings right after its application. By 4 weeks into the experiment, water deficit seedlings of both species released significantly lower levels of total monoterpenes than well watered seedlings. Needle tissue contained lower total monoterpene content than bark. Generally, monoterpene tissue content increased over time independent from any treatment. The results suggest that monoterpenes that play a role in pine-MPB interactions differ between lodgepole and jack pine, and also that they are affected by water availability. PMID:21874397

Lusebrink, Inka; Evenden, Maya L; Blanchet, F Guillaume; Cooke, Janice E K; Erbilgin, Nadir

2011-09-01

440

Trapping and Transportation of Adult and Juvenile Salmon in the Lower Umatilla River in Northeast Oregon, 1996-1997 : Umatilla River Basin Trap and Haul Program : Annual Progress Report, October 1996-September 1997.  

SciTech Connect

Threemile Falls Dam (Threemile Dam), located near the town of Umatilla, is the major collection and counting point for adult salmonids returning to the Umatilla River. Returning salmon and steelhead were collected at Threemile Dam from August 30, 1996 to August 26, 1997. A total of 2,477 summer steelhead (Oncorhynchus mykiss); 646 adult, 80 jack, and 606 subjack fall chinook (O. tshawytscha); 618 adult and 24 jack coho (O. kisutch); and 2,194 adult and four jack spring chinook (O. tshawytscha) were collected. All fish were trapped at the east bank facility. Of the fish collected, 22 summer steelhead; 18 adult and two jack fall chinook; five adult coho; and 407 adult and three jack spring chinook were hauled upstream from Threemile Dam. There were 2,245 summer steelhead; 70 adult, 51 jack and 520 subjack fall chinook; 593 adult and 24 jack coho; and 1,130 adult spring chinook released at Threemile Dam I In addition, 110 summer steelhead; 551 adult and 25 jack fall chinook; and 600 adult spring chinook were collected for broodstock. The Westland Canal juvenile facility (Westland), located near the town of Echo at rivermile (RM) 27, is the major collection point for outmigrating juvenile salmonids and steelhead kelts, The canal was open for a total of 210 days between December 16, 1996 and July 30, 1997. During that period, fish were bypassed back to the river 175 days and were trapped on 35 days, An estimated 1,675 pounds of juvenile fish were transported from Westland to the Umatilla River boat ramp (RM 0.5), Approximately 80% of the juveniles transported were salmonids, No steelhead kelts were hauled from Westland this year. The Threemile Dam west bank juvenile bypass was operated from October 4 to November 1, 1996 and from March 26 to July 7, 1997. The juvenile trap was not operated this year. 6 refs., 6 figs., 6 tabs.

Zimmerman, Brian C.; Duke, Bill B.

1997-12-01

441

The undrained bearing capacity of a spudcan foundation under combined loading in soft clay  

Microsoft Academic Search

Mobile jack-up drilling rigs are typically supported by individual, large diameter spudcan foundations. Before deployment, the suitability of a jack-up to a location must be shown in a site-specific assessment under loads associated with a 50-year return period storm, which ultimately need to be resisted by the foundations. The capacity of the spudcans under combined vertical, horizontal and moment loading

Youhu Zhang; Britta Bienen; Mark J. Cassidy; Susan Gourvenec

2011-01-01

442

Antimicrobial and antioxidant activities of three Mentha species essential oils.  

PubMed

The present study describes the antimicrobial activity and free radical scavenging capacity (RSC) of essential oils from Mentha aquatica L., Mentha longifolia L., and Mentha piperita L. The chemical profile of each essential oil was determined by GC-MS and TLC. All essential oils exhibited very strong antibacterial activity, in particularly against Esherichia coli strains. The most powerful was M. piperita essential oil, especially towards multiresistant strain of Shigella sonei and Micrococcus flavus ATTC 10,240. All tested oils showed significant fungistatic and fungicidal activity [expressed as minimal inhibitory concentration (MIC) and minimal fungicidal concentration (MFC) values, respectively], that were considerably higher than those of the commercial fungicide bifonazole. The essential oils of M. piperita and M. longifolia were found to be more active than the essential oil of M. aquatica. Especially low MIC (4 microL/mL) and MFC (4 microL/mL) were found with M. piperita oil against Trichophyton tonsurans and Candida albicans (both 8 microL/mL). The RSC was evaluated by measuring the scavenging activity of the essential oils on the 2,2-diphenyl-1-picrylhydrazyl (DPPH) and OH radicals. All examined essential oils were able to reduce DPPH radicals into the neutral DPPH-H form, and this activity was dose-dependent. However, only the M. piperita oil reduced DPPH to 50 % (IC50 = 2.53 microg/mL). The M. piperita essential oil also exhibited the highest OH radical scavenging activity, reducing OH radical generation in the Fenton reaction by 24 % (pure oil). According to GC-MS and TLC (dot-blot techniques), the most powerful scavenging compounds were monoterpene ketones (menthone and isomenthone) in the essential oils of M. longifolia and M. piperita and 1,8-cineole in the oil of M. aquatica. PMID:12802721

Mimica-Duki?, Neda; Bozin, Biljana; Sokovi?, Marina; Mihajlovi?, Biserka; Matavulj, Milan

2003-05-01

443

Modeling the spatial impact of an invasive N2-fixing Acacia by means of isotopic and optical measurements  

NASA Astrophysics Data System (ADS)

Invasions by exotic plant species are known to seriously alter biogeochemical cycles and ecosystem functioning of the systems they invade, with nitrogen fixing species being among the most problematic invaders. However, explicitly quantifying such alterations remains challenging, as methods are lacking to capture the spatial scale of impact. Here, we present a spatially explicit approach allowing to quantify the impact of an N2-fixing invasive species, Acacia longifolia, on a native Portuguese dune system by means of stable isotope analyses. 15N isotopic signatures (?15N) differed strongly between the native system (?15N c. -10 o) and atmospherically derived N in A. longifolia (?15N c. 0 o). Thus, N sources for a native, non-fixing plant, Corema album, could be readily distinguished. Using georeferenced ?15N values of C. album, we could accurately map N introduced by A. longifolia on a spatial scale. N input exceeded the canopy of the N2 fixer by far and reached up to 8 m into the uninvaded vegetation. The area altered by invasion was c. 3.5 fold larger than the area covered by the invader's canopy. Our results highlight that spatially explicit measurements of sensitive ecological tracers like stable isotopic signatures, i.e. isoscapes, provide a valuable means to quantify alterations of biogeochemical cycles within plant communities. Moreover, linking stable isotopes with optical measurements and remote sensing can be a powerful tool to upscale such information from leaf- to larger spatial scales. Here we show that foliar ?15N signatures can be accurately modeled using leaf reflectance spectra. This approach opens promising future perspectives in ecosystem monitoring based on the potential use of hyperspectral aerial and satellite imagery.

Hellmann, Christine; Große-Stoltenberg, André; Máguas, Cristina; Oldeland, Jens; Rascher, Katherine G.; Thiele, Jan; Werner, Christiane

2014-05-01

444

Chemical characterisation of PM10 emissions from combustion in a closed stove of common woods grown in Portugal  

NASA Astrophysics Data System (ADS)

A series of source tests were conducted to determine the wood elemental composition, combustion gases and the chemical constitution of PM10 emissions from the closed stove combustion of four species of woods grown in Portugal: Eucalyptus globulos, Pinus pinaster, Quercus suber and Acacia longifolia. The burning tests were made in a closed stove with a dilution source sampler. To ascertain the combustion phase and conditions, continuous emission monitors measured O2, CO2, CO, NO, hydrocarbons, temperature and pressure, during each burning cycle. Woodsmoke samples have been collected and analysed to estimate the contribution of plant debris and biomass smoke to atmospheric aerosols. At this stage of work, cellulose, anhydrosugars and humic-like substances (HULIS) have been measured. Cellulose was determined photometrically after its conversion to D-Glucose. The determination of levoglucosan and other anhydrosugars, including mannosan and galactosan, was carried out by high performance liquid chromatography with electrochemical detection. HULIS determination was made with a total organic carbon analyser and an infrared non dispersive detector, after the isolation of substances. Cellulose was present in PM10 at mass fractions (w/w) of 0.13%, 0.13%, 0.05% and 0.08% for Eucalyptus globulos, Pinus pinaster, Quercus suber and Acacia longifolia, respectively. Levoglucosan was the major anhydrosugar present in the samples, representing mass fractions of 14.71%, 3.80%, 6.78% and 1.91%, concerning the above mentioned wood species, respectively. The levoglucosan-to-mannosan ratio, usually used to evaluate the proportion of hardwood or softwood smoke in PM10, gave average values of 34.9 (Eucalyptus globulos), 3.40 (Pinus pinaster), 24.8 (Quercus suber) and 10.4 (Acacia longifolia). HULIS were present at mass fractions of 2.35%, 2.99%, 1.52% and 1.72% for the four wood species listed in the same order as before.

Gonçalves, C.; Alves, C.; Pio, C.; Rzaca, M.; Schmidl, C.; Puxbaum, H.

2009-04-01

445

Limitations on the climatic and ecological signals provided by the ? 13C values of phytoliths from a C 4 North American prairie grass  

NASA Astrophysics Data System (ADS)

Silica phytoliths, which are deposits of opal-A that precipitate in the intra- and intercellular spaces of plant tissues during transpiration, commonly contain small amounts of occluded organic matter. In this paper, we investigate whether the ? 13C values of phytoliths from a C 4 grass, Calamovilfa longifolia, vary in response to climatic variables that can affect the carbon-isotope composition of plant tissues. There is no significant correlation ( r2 < 0.3) between climate variables and the ? 13C values of C. longifolia tissues (average ? 13C tissue = -13.1 ± 0.6 ‰; n = 70) across the North American prairies. However, plant tissue ? 13C values are lower for grasses collected in populated areas where the ? 13C value of atmospheric CO 2 is expected to be lower because of fossil fuel burning. Phytolith ? 13C values are more variable (? 13C = -27.3 to -23.0‰; average = -25.1 ± 1.3‰; n = 34) and more sensitive to changes in aridity than whole tissue ? 13C values. The strongest correlations are obtained between the ? 13C values of stem or sheath phytoliths and humidity ( r2 = 0.3), latitude ( r2 = 0.4) and amount of precipitation ( r2 = 0.5). However, use of these relationships is limited by the wide spread in ? 13C values of phytoliths from different plant tissues at the same location. We have been unable to infer any relationship between ? 13C values of phytoliths and expected variations in the ? 13C values of atmospheric CO 2. The C. longifolia phytoliths are depleted of 13C relative to tissue carbon by 10-14‰. This means that the phytoliths examined in this study have carbon isotopic compositions within the range reported previously for phytoliths from C 3 plants. This observation may further limit the usefulness of soil-phytolith assemblage ? 13C values for identifying shifts in grassland C 3:C 4 ratios.

Webb, Elizabeth A.; Longstaffe, Fred J.

2010-06-01

446

Evaluation of selected South African plant species for antioxidant, antiplatelet, and cytotoxic activity.  

PubMed

The antioxidant, antiplatelet, and cytoxoxic effects of seven South African plant extracts, namely, Combretum vendae A.E. van Wyk (Combretaceae), Commiphora harveyi (Engl.) Engl. (Burseraceae), Khaya anthotheca (Welm.) C.DC (Meliaceae), Kirkia wilmsii Engl. (Kirkiaceae), Loxostylis alata A. Spreng. ex Rchb. (Anacardiaceae), Ochna natalitia (Meisn.) Walp. (Ochnaceae), and Protorhus longifolia (Bernh. Ex C. Krauss) Engl. (Anacardiaceae), were evaluated using established in vitro assays. All the extracts showed comparably low toxicity except for the extract of C. harveyi that showed high hemagluttination assay titer value, which indicates toxicity. The extracts of P. longifolia, K. wilmsii, O. natalitia, L. alata, C. harveyi, and C. vendae exhibited antioxidant properties in the qualitative assay using DPPH. In the quantification of antioxidation using ABTS, only the extracts of P. longifolia, L. alata, and C. vendae showed antioxidant activity with respective TEAC values of 1.39, 1.94, and 2.08. Similarly, in the quantitative DPPH assay, L. alata (EC50, 3.58+/-0.23 microg/mL) and K. wilmsii (EC50, 3.57+/-0.41 microg/mL) did not differ significantly (p

Suleiman, M M; Bagla, V; Naidoo, V; Eloff, J N

2010-06-01

447

Iron and magnesium concentrations of mint accessions (Mentha spp.).  

PubMed

Plant foods can contribute significantly to human nutrition and health, because they contain almost all essential human nutrients. However, nutrient composition varies among different plant foods. Improvement of nutritional quality of our food supply, especially with respect to essential nutrient minerals, such as magnesium, iron and zinc, could be an important goal of vegetable crops. There is little information available on essential mineral concentration of mint (Mentha spp.). This study was conducted to evaluate some micronutrient minerals of twelve Iranian mint accessions, three of which belonging to Mentha longifolia (Mzin5, Mzin6 and Mzin11) and the remaining were Mentha spicata L species (Mzin1, Mzin2, Mzin3, Mzin4, Mzin7, Mzin8, Mzin9, Mzin10, and Mzin12). This report is assigned to two essential human nutrients, iron (Fe) and magnesium (Mg) concentrations of two mint herbage harvests in 12 mint clones within each of two studied years. Results of analysis of variance indicated a significant difference among accessions and a non-significant difference between species for Mg and Fe concentrations. Mean comparisons showed that Mzin2, Mzin12 (both belong to M. spicata) and Mzin6 (belongs to M. longifolia) possess the highest Fe concentration. Furthermore, Mzins 5, 6 and 11 belong to M. longifolia as well as Mzins 2 and 10 belong to M. spicata did not significantly differ and all included the first ranking group for Mg concentration. Fe concentration averaged on the first harvest ranged from 134mg/kg for Mzin4 genotype (belongs to M. spicata) to 210mg/kg to for Mzin5 genotype (belongs to M. longifolia), while Fe concentration at the second harvest varied from 315mg/kg for Mzin1 to 582mg/kg for Mzin12. At the first harvest, Mg concentration ranged from 748mg/kg for Mzin1 to 1174 for Mzin5. At the second harvest, Mg concentration varied from 1171mg/kg for Mzin9 to 1618mg/kg for Mzin11. It is hence concluded that the magnesium and iron concentrations of Mentha species are comparable to those reported for other leafy vegetable crops. Therefore, this is evidence that this herb is rich in some essential nutrient minerals, especially Fe and Mg which are essential for human health. PMID:17468000

Arzani, A; Zeinali, H; Razmjo, K

2007-05-01

448

Properties of the Mentha strain of lychnis ringspot virus.  

PubMed

A hordeivirus isolated from horsemint (Mentha longifolia Huds.) was designated as the mentha strain of lychnis ringspot virus (LRSV-M) on the basis of serological relationship with the type strain (LRSV-T) and similarities in nucleotide sequence and properties of genomic and replicative RNAs of the two strains. Four ssRNAs in addition to the three genomic RNAs were encapsidated by LRSV-M coat protein. No genomic sequence similarity was detected between LRSV-M and either barley stripe mosaic or poa semilatent viruses under high stringency conditions, confirming that the hordeiviruses are a group of morphologically similar, but genomically distinct viruses. PMID:1740382

Beczner, L; Hamilton, R I; Rochon, D M

1992-01-01

449

Acaricidal activity of the essential oils from three Lamiaceae plant species on Rhipicephalus turanicus Pom. (Acari: Ixodidae).  

PubMed

Acaricidal effects of three Labiatae essential oils extracted from ariel parts of Thymus sipyleus Boiss. subsp. sipyleus, Mentha longifolia L., and Dorystoechas hastata Boiss. & Heldr. ex Bentham on 10-day-old Rhipicephalus turanicus Pom. (Acari: Ixodidae) larvae were evaluated by using the larval packet test bioassay. Serial dilutions of the three essential oils were tested from a starting concentration of 1-0.1% (1.0, 0.5, 0.25, and 0.1% w/v). Results showed that all essential oils had very similar activity, producing complete mortality (100%) in all tested concentrations on 10-day-old R. turanicus tick larvae. PMID:22581297

Koc, Samed; Oz, Emre; Ayd?n, Levent; Cetin, Huseyin

2012-10-01

450

Umatilla River Fish Passage Operations Program, 2003-2004 Annual Report.  

SciTech Connect

Threemile Falls Dam (Threemile Dam), located near the town of Umatilla, is the major collection and counting point for adult salmonids returning to the Umatilla River. Returning salmon and steelhead were enumerated at Threemile Dam from August 19, 2003 to July 8, 2004. A total of 3,388 summer steelhead (Oncorhynchus mykiss); 1,482 adult, 638 jack, and 2,150 subjack fall chinook (O. tshawytscha); 8,319 adult and 667 jack coho (O. kisutch); and 2,965 adult and 270 jack spring chinook (O. tshawytscha) were counted. All fish were enumerated at the east bank facility. Of the fish counted, 34 summer steelhead and 31 adult and 9 jack spring chinook were hauled upstream from Threemile Dam. There were 3,166 summer steelhead; 1,076 adult, 554 jack and 2,026 subjack fall chinook; 8,213 adult and 647 jack coho; and 2,152 adult and 174 jack spring chinook either released at, or allowed to volitionally migrate past, Threemile Dam. Also, 121 summer steelhead; 388 adult and 19 jack fall chinook; and 561 adult and 29 jack spring chinook were collected for brood. In addition, 239 spring chinook were collected for the outplanting efforts in the Walla Walla Basin. There were also 25 pair hatchery steelhead adults collected for the progeny maker study. The Westland Canal juvenile facility (Westland), located near the town of Echo at rivermile (RM) 27, is the major collection point for outmigrating juvenile salmonids and steelhead kelts. The canal was open for 184 days between January 12 and July 6, 2004. During that period, fish were bypassed back to the river 173 days and were trapped 10 days. An estimated 44 pounds of juvenile fish were transported from Westland to the Umatilla River boat ramp (RM 0.5). Approximately 84% of the juveniles transported were salmonids. No steelhead kelts were hauled from Westland this year. The Threemile Dam west bank juvenile bypass was opened on February 10, 2004 for outmigration sampling and continued until July 7, 2004 when sampling was discontinued. The juvenile bypass ran at the 5 cfs level until the initiation of Phase I on August 15, 2004. The juvenile trap was operated by the Oregon Department of Fish and Wildlife (ODFW) under the Evaluation of Umatilla Juvenile Salmonid Outmigration Project.

Bronson, James P. (Confederated Tribes of the Umatilla Indian Reservation, Department of Natural Resources, Pendleton, OR); Duke, Bill B. (Oregon Department of Fish and Wildlife, Pendleton, OR)

2005-08-01

451

Umatilla River Fish Passage Operations Program, 2002-2003 Annual Report.  

SciTech Connect

Threemile Falls Dam (Threemile Dam), located near the town of Umatilla, is the major collection and counting point for adult salmonids returning to the Umatilla River. Returning salmon and steelhead were enumerated at Threemile Dam from August 17, 2002 to September 29, 2003. A total of 3,080 summer steelhead (Oncorhynchus mykiss); 1716 adult, 617 jack, and 1,709 subjack fall chinook (O. tshawytscha); 3,820 adult and 971 jack coho (O. kisutch); and 3,607 adult and 135 jack spring chinook (O. tshawytscha) were counted. All fish were enumerated at the east bank facility. Of the fish counted, 6 summer steelhead and 330 adult and 49 jack spring chinook were hauled upstream from Threemile Dam. There were 2,882 summer steelhead; 1161 adult, 509 jack and 1,546 subjack fall chinook; 3,704 adult and 915 jack coho; and 2,406 adult and 31 jack spring chinook either released at, or allowed to volitionally migrate past, Threemile Dam. Also, 109 summer steelhead; 532 adult and 32 jack fall chinook; and 560 adult and 28 jack spring chinook were collected for brood. In addition, 282 spring chinook were collected for the outplanting efforts in the Walla Walla Basin. The Westland Canal juvenile facility (Westland), located near the town of Echo at rivermile (RM) 27, is the major collection point for outmigrating juvenile salmonids and steelhead kelts. The canal was open for 159 days between January 27 and July 4, 2003. During that period, fish were bypassed back to the river 145 days and were trapped 11 days. An estimated 205 pounds of juvenile fish were transported from Westland to the Umatilla River boat ramp (RM 0.5). Approximately 82% of the juveniles transported were salmonids. No steelhead kelts were hauled from Westland this year. The Threemile Dam west bank juvenile bypass was opened on September 16, 2002. and continued until November 1, 2002. The bypass was reopened March 3, 2003 and ran until July 3, 2003. The juvenile trap was operated by the Umatilla Passage Evaluation Project.

Bronson, James P. (Confederated Tribes of the Umatilla Indian Reservation, Department of Natural Resources, Pendleton, OR); Duke, Bill B. (Oregon Department of Fish and Wildlife, Pendleton, OR)

2004-03-01

452

Umatilla River Fish Passage Operations Program, 2001-2002 Annual Report.  

SciTech Connect

Threemile Falls Dam (Threemile Dam), located near the town of Umatilla, Oregon is the major collection and counting point for adult salmonids returning to the Umatilla River. Returning salmon and steelhead were enumerated at Threemile Dam from August 22, 2001 to September 12, 2002. A total of 5,519 summer steelhead (Oncorhynchus mykiss); 1,146 adult, 1,158 jack, and 970 subjack fall chinook (O. tshawytscha); 22,792 adult and 80 jack coho (O. kisutch); and 5,058 adult and 188 jack spring chinook (O. tshawytscha) were counted. All fish were enumerated at the east bank facility. Of the fish counted, 261 adult and 14 jack spring chinook were hauled upstream from Threemile Dam for release. There were 5,359 summer steelhead; 622 adult, 1,041 jack and 867 subjack fall chinook; 22,513 adult and 76 jack coho; and 4,061 adult and 123 jack spring chinook either released at, or allowed to volitionally migrate past, Threemile Dam. In addition, 110 summer steelhead; 462 adult and 24 jack fall chinook; and 560 adult and 28 jack spring chinook were collected for brood. The Westland Canal juvenile facility (Westland), located near the town of Echo at rivermile (RM) 27, is the major collection point for outmigrating juvenile salmonids and steelhead kelts. The canal was open for 141 days between February 22 and July 12, 2002. During that period, fish were bypassed back to the river 134 days and were trapped 5 days. An estimated 200 pounds of juvenile fish were transported from Westland. Approximately 90% of the juveniles transported were salmonids. No steelhead kelts were hauled from Westland this year. The Threemile Dam west bank juvenile bypass was opened August 16, 2002. The bypass was run until October 31, 2001 with the exception of the period from August 29 to September 16. The bypass was reopened March 7, 2002 and ran until July 8. The juvenile trap was operated from July 8 to July 12 by the Umatilla Passage Evaluation project.

Zimmerman, Brian C. (Confederated Tribes of the Umatilla Indian Reservation, Department of Natural Resources, Pendleton, OR); Duke, Bill B. (Oregon Department of Fish and Wildlife, Pendleton, OR)

2003-02-01

453

Modeling and simulation of an amplified structural damping system in a seismically-excited truss tower  

NASA Astrophysics Data System (ADS)

In the present work, numerical simulations are carried out to investigate a passive amplified structural damping system, the scissor-jack damper, for controlling vibrations in a seismically-excited truss tower. To reduce computational effort, a bi-model method is employed to represent the 3D truss tower as a dynamically equivalent 2D lumped-mass model. For the scissor-jack damper, a new formulation for the amplification factor equation of the device is presented, and then validated using CAD. The new formulation accounts for the large deformations experienced by the device as a result of the large displacements present in the flexible tower during seismic loading. In order to capture the interaction between the structure and control device, the displacement-dependent amplification factors of the scissor-jack devices, and velocity-dependent forces of the dampers, are calculated at each time step. The resulting amplified damper force is then applied back to the structure to determine its response at the next time step. The response of the tower with scissor-jack damper systems is simulated for the El Centro and Northridge earthquakes, and time-histories of the displacement and absolute acceleration at each level of the tower are obtained. These results indicate that the system is effective in reducing overall response of the tower without exceeding practical limits on the stroke capacity of the scissor-jack dampers.

Walsh, Kenneth K.; Cronin, Kyle J.; Rambo-Roddenberry, Michelle D.; Grupenhof, Kyle

2010-03-01

454

[Effects of sugar cane molasses on the nutritive value of Canavalia ensiformis seeds for broiler chicks].  

PubMed

Three experiments were conducted to determine the efficacy of sugar cane molasses to improve performance of broiler chicks fed a diet containing 30% raw or autoclaved Canavalia ensiformis seeds (Jack beans). For this latter purpose, canavalia seeds were ground and autoclaved at 120 degrees C and 15 psi during 60 min. Day-old male chicks (Cobb x Cobb) were used throughout the study. In Experiment 1, adding 10% molasses to a control diet devoided of jack beans seeds significantly (p < 0.05) increased chick feed intake. However, neither the addition of 10% molasses nor of 5% glucose, sucrose, fructose, xylose or corn starch to the 30% raw canavalia ration allowed feed intakes similar to that shown by the control diet (Experiment 2). Broiler performance was evaluated in Experiment 3 in response to diets containing 30% raw or autoclaved jack bean meal. Ten-percent molasses was also added to both diets which along with the control diet were fed to chiks had free access to diets. Growth was depressed when the Jack bean containing diets were pair-fed to chicks. The results indicated that the use of molasses does not overcome the deleterious effects on chick performance due to the presence of 30% raw or autoclaved jack bean meal in the diets. PMID:9239297

Vargas, R E; Castillo, M; Michelangeli, C

1996-06-01

455

Repellent activities of some Labiatae plant essential oils against the saltmarsh mosquito Ochlerotatus caspius (Pallas, 1771) (Diptera: Culicidae).  

PubMed

The repellent activities of the essential oils of two Thymus (Thymus sipyleus Boiss. subsp. sipyleus and Thymus revolutus Celak) and two Mentha (Mentha spicata L. subsp. spicata and Mentha longifolia L.) species against Ochlerotatus caspius (Pallas, 1771) (Diptera: Culicidae) are presented. The essential oils were obtained by hydrodistillation of the aerial parts of the plants in flowering period and repellency tests were done with a Y-tube olfactometer. All essential oils showed repellency in varying degrees and exhibited no significant time-dependent repellent activities. When all test oils compared for repellent activities there was no significant activity detected within 15 min exposure period. Mentha essential oils had better activity than Thymus essential oils, producing high repellency (73.8-84.2%) at 30th min on Oc. caspius. Mentha longifolia has the best mosquito repellent activity among the plants tested at the 25th min. Th. sipyleus subsp. sipyleus essential oil produced >85% repellent activity at the 15th min, but the effect decreased noticeably to 63.1% and 68% at 25th and 30th min, respectively. PMID:22179264

Koc, Samed; Oz, Emre; Cetin, Huseyin

2012-06-01

456

Evaluation of air pollution tolerance index of selected plant species along roadsides in Thiruvananthapuram, Kerala.  

PubMed

To develop the usefulness of plants as bioindicators requires an appropriate selection of plant species which entail an utmost importance for a particular situation. In the p