检索结果-南通市图书馆

Open Journal of Fluid Dynamics 2022年第1期12卷 86-95页

作者： Robert Lloyd jackson Independent Researcher Stilwell KS USA

The derivation of solutions to the Navier-Stokes (system of) equations (NSEs), in three spatial dimensions, has been an enigma as time can tell. This study wishes to show how to eradicate this problem via the usage of a recently proposed method for solving partial differential equations called the Generating Function Technique, or GFT for short. The paper will first quickly define the NSEs with and without an external force, then provide a quick synopsis of the GFT. Next, the study will derive solutions to these two major problems and give an analysis of the data concerning a specific set of criteria established by the Clay Mathematics Institute to determine the smoothness and existence of solutions. Results via GFT will show one can easily prove the existence of solutions to the NSEs with or without the presence of an external force. However, only the solutions to the NSEs will be globally bound.

关键词： Physics and Mathematics Fluid Mechanics Partial Differential Equations

Integrated tool for microsatellite isolation and validation from the reference genome and their application in the study of breeding turnover in an endangered avian population

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Integrative Zoology 2018年第5期13卷 553-568页

作者： Xian HOU Pengwei XU Zhenzhen LIN Josephine D’URBAN-jackson AndrewDIXON Batbayar BOLD Jiliang XU Xiangjiang ZHAN Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijingChina School of Nature Conservation Beijing Forestry UniversityBeijingChina BGI-Tech BGI-ShenzhenShenzhenChina Milner Centre for Evolution Department of Biology and BiochemistryUniversity of BathBathUK Emirates Falconers’Club Abu DhabiUnited Arab Emirates Cardiff University-Institute of Zoology Joint Laboratory for Biocomplexity Research BeijingChina Wildlife Science and Conservation Center UlaanbaatarMongolia Center for Excellence in Animal Evolution and Genetics Chinese Academy of SciencesKunmingChina

Accurate individual identification is required to estimate survival rates in avian *** endangered species,non-invasive methods of obtaining individual identification,such as using molted feathers as a source of DNA for microsatellite markers,are preferred because of less disturbance,easy sample preparation and high *** the availability of many avian genomes,a few pipelines isolating genome-wide microsatellites have been published,but it is still a challenge to isolate microsatellites from the reference genome ***,we have developed an integrated tool comprising a bioinformatic pipeline and experimental procedures for microsatellite isolation and validation based on the reference *** have identified over 95000 microsatellite loci and established a system comprising 10 highly polymorphic markers(PIC value:0.49–0.93,mean:0.79)for an endangered species,saker falcon(Falco cherrug).These markers(except 1)were successfully amplified in 126 molted feathers,exhibiting high amplification success rates(83.9–99.7%),high quality index(0.90–0.97)and low allelic dropout rates(1–9.5%).To further assess the efficiency of this marker system in a population study,we identified individual sakers using these molted feathers(adult)and 146 plucked feathers(offspring).The use of parent and offspring samples enabled us to infer the genotype of missing samples(N=28),and all adult genotypes were used to ascertain that breeding turnover is a useful proxy for survival estimation in *** study presents a cost-effective tool for microsatellite isolation based on publicly available reference genomes and demonstrates the power of this tool in estimating key parameters of avian population dynamics.

关键词： breeding turnover Falco cherrug feather microsatellite isolation parentage analysis reference genome saker falcon

Establishment of the First Professional Organization of Traditional Chinese Medicine and Acupuncture in California

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Medicine and Culture 2022年第1期5卷 46-51页

作者： Sam Xian Sheng Huang Jun Hu Da-Ren Chen jackson Chau American Association of Chinese Medicine and Acupuncture San FranciscoCA 94108USA Research Institute of Chinese Medicine San FranciscoCA 94108USA Myway Health LLC Jun Hu Chinese MedicineSacramentoCA 95610USA California Chamber for History of Chinese Medicine San FranciscoCA 94108USA

The California Chinese Medicine and Acupuncture Research Association,founded on March 25,1974,is the first Chinese medicine organization registered with the state government in *** was established after more than a year of arduous preparation and had 15 founding *** time,it evolved into the biggest organization of Chinese medicine and acupuncture in *** in 2015,it became the American Association of Chinese Medicine and Acupuncture with more than 500 members.

关键词： Acupuncture Aubrey Grossman Bea Chi Pien(卞伯歧) Hans Wong(黄天池) Chinese medicine Medical history

Genic C-Methylation in Soybean Is Associated with Gene Paralogs Relocated to Transposable Element-Rich Pericentromeres

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2018年第3期11卷 485-495页

作者： Moaine El Baidouri Kyung Do Kim Brian Abernathy Ying-Hui Li Li-Juan Qiu Scott A. jackson Center for Applied Genetic Technologies University of Georgia 111 Riverbend Road Athens GA 30602 USA Corporate R&D LG Chem LG Science Park 30 Magokjungang 10-ro Gangseo-gu Seoul 07796 Republic of Korea The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI) Institute of Crop Science Chinese Academy of Agricultural SciencesBeijing China These authors contributed equally to this article.

Most plants are polyploid due to whole-genome duplications （WGD） and can thus have duplicated genes. Following a WGD, paralogs are often fractionated （lost） and few duplicate pairs remain. Little attention has been paid to the role of DNA methylation in the functional divergence of paralogous genes. Using high- resolution methylation maps of accessions of domesticated and wild soybean, we show that in soybean, a recent paleopolyploid with many paralogs, DNA methylation likely contributed to the elimination of ge- netic redundancy of polyploidy-derived gene paralogs. Transcriptionally silenced paralogs exhibit partic- ular genomic features as they are often associated with proximal transposable elements （TEs） and are pref- erentially located in pericentromeres, likely due to gene movement during evolution. Additionally, we provide evidence that gene methylation associated with proximal TEs is implicated in the divergence of expression profiles between orthologous genes of wild and domesticated soybean, and within populations.

关键词： soybean paralog gene methylation proximal transposable element methylation spreading

Disturbance cues in freshwater prey fishes： Does urea function as an ＇early warning cue＇ in juvenile convict cichlids and rainbow trout？

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2012年第2期58卷 250-259页

作者： Grant E. BROWN Christopher D. jackson Patrick H. MALKA Elisa JACQUES Marc-Andre COUTURIER Department of Biology Concordia University 7141 Sherbrooke St. West Montreal Quebec H4B 1R6 CANADA

Freshwater vertebrate and invertebrate prey species commonly rely on chemosensory information, including non-injury released disturbance cues, to assess local predation threats. We conducted laboratory studies to （1） determine if urea can function as a disturbance cue in juvenile convict cichlids and rainbow trout and （2） determine if the background level of urea influences the behavioral response to a subsequent pulse of urea （＇background noise＇ hypothesis）. In the first series of trials, juve- nile cichlids and trout were exposed to urea at varying concentrations （0 to 0.5 mg L-1 for cichlids and 0 to 1.0 mg L1 for trout）. Our results suggest that both cichilds and trout exhibited functionally similar responses to urea and conspecific disturbance cues and that increasing the concentration of urea results in an increase intensity of antipredator behaviour. In the second series of trials, we pre-exposed cichlids or trout to intermediate or high concentrations of urea （or a distilled water control） and then tested for the response to a second pulse of urea at at intermediate or high concentrations （versus a distilled water control）. Our results demon- strate that pre-exposure to urea reduces or eliminates the response to a second pulse of urea, supporting the background noise hy- pothesis. Together, our results suggest that pulses of urea, released by disturbed or stressed individuals, may function as an early warning signal in freshwater prey species

关键词： Disturbance cue Metabolic wastes Chemosensory risk assessment Predator-prey interactions Convict cichlids Rainbow trout

Effects of alkaline-electrolyzed and hydrogen-rich water,in a high-fat-diet nonalcoholic fatty liver disease mouse model

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2018年第45期24卷 5095-5108页

作者： Karen jackson Noa Dressler Rotem S Ben-Shushan Ari Meerson Tyler W LeBaron Snait Tamir Laboratory of Human Health and Nutrition Sciences MIGAL-Galilee Research InstituteKyriat Shmona 11016Israel Tel Hai College Upper Galilee 12110Israel Center of Experimental Medicine Institute for Heart ResearchSlovak Academy of SciencesBratislava 84005Slovakia Molecular Hydrogen Institute UT 48101United States

AIM To identify the effect of hydrogen-rich water(HRW) and electrolyzed-alkaline water(EAW) on high-fat-induced non-alcoholic fatty acid disease in *** Mice were divided into four groups:(1) Regular diet(RD)/regular water(RW);(2) high-fat diet(HFD)/RW;(3) RD/EAW; and(4) HFD/EAW. Weight and body composition were measured. After twelve weeks, animals were sacrificed, and livers were processed for histology and reverse-transcriptase polymerase chain reaction. A similar experiment was performed using HRW to determine the influence and importance of molecular hydrogen(H2) in EAW. Finally, we compared the response of hepatocytes isolated from mice drinking HRW or RW to palmitate *** EAW had several properties important to the study:(1) pH = 11;(2) oxidation-reduction potential of-495 mV; and(3) H2 = 0.2 mg/L. However, in contrast to other studies, there were no differences between the groups drinking EAW or RW in either the RD or HFD groups. We hypothesized that the null result was due to low H2 concentrations. Therefore, we evaluated the effects of RW and low and high HRW concentrations(L-HRW = 0.3 mg H2/L and H-HRW = 0.8 mg H2/L, respectively) in mice fed an HFD. Compared to RW and L-HRW, H-HRW resulted in a lower increase in fat mass(46% vs 61%), an increase in lean body mass(42% vs 28%), and a decrease in hepatic lipid accumulation(P < 0.01). Lastly, exposure of hepatocytes isolated from mice drinking H-HRW to palmitate overload demonstrated a protective effect from H2 by reducing hepatocyte lipid accumulation in comparison to mice drinking regular *** H2 is the therapeutic agent in electrolyzed-alkaline water and attenuates HFD-induced nonalcoholic fatty liver disease in mice.

关键词： Hydrogen-rich-water Nonalcoholic fatty liver disease Alkaline water Metabolic syndrome Molecular hydrogen High-fat diet

C_(2) SWAN BAND EMISSION BY MULTIPHOTON PHOTODISSOCIATION OF C_(4)H_(2)N_(2) MOLECULE AT 193nm

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 1987年第8期4卷 345-348页

作者： XIE Xiaoxiang J.B.Halpern W.M.jackson Anhui Institute of Optics and Fine Mechanics Chinese Academy of SciencesHefei Department of Chemistry Howard UniversityWashingtonDC20059USA Department of Chemistry University of CaliforniaDavisCA 95616USA

Multiphoton dissociation of C_(4)H_(2)N_(2) molecules at 193nm has been studied at high laser *** spectra are recorded from violet(B ^(2)Σ→X ^(2)Σ)bands of CN and the Swan bands of C_(2)(d ^(3)π_(g) a ^(3)π_(u)).

关键词： bands violet dissociation

Virus-Induced Gene Silencing in the Culinary Ginger （Zingiber officinale）： An Effective Mechanism for Down-Regulating Gene Expression in Tropical Monocots

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2009年第5期2卷 1084-1094页

作者： Tanya Renner Jennifer Bragg Heather E. Driscoll Juliana Cho Andrew O. jackson Chelsea D. Specht Department of Plant and Microbial Biology University of California Berkeley CA 94720 USA Present address: Genornics and Gene Discovery USDA ARS PWA WRRC-GGD 800 Buchanan Street Albany CA 94710 USA

Virus-induced gene silencing （VIGS） has been shown to be effective for transient knockdown of gene expression in plants to analyze the effects of specific genes in development and stress-related responses. VlGS is well established for studies of model systems and crops within the Solanaceae, Brassicaceae, Leguminaceae, and Poaceae, but only recently has been applied to plants residing outside these families. Here, we have demonstrated that barley stripe mosaic virus （BSMV） can infect two species within the Zingiberaceae, and that BSMV-VIGS can be applied to specifically down-regulate phytoene desaturase in the culinary ginger Zingiber officinale. These results suggest that extension of BSMV-VlGS to monocots other than cereals has the potential for directed genetic analyses of many important temperate and tropical crop species.

关键词： Barley stripe mosaic virus virus-induced gene silencing VIGS Zingiber officinale Monocot.

China Banking: How to Make Breakthrough

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

国际人才交流 2011年第4期 58-59,64页

作者： Richard jackson Shenzhen Development Bank

China banking improved much within the past 10 years, but the industry is still largely traditional in thinking with a very heavy reliance on simple lending and deposit taking. So what breakthroughs should be made in future of the industry? Richard jackson, president of Shenzhen Development Bank holds that medium and small banks must improve their strategic planning capabilities and differentiate themselves more clearly based on their own particular advantages and strengths. Difference and diversity should certainly be the way of development.

关键词：银行业金融市场业务发展风险控制

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Heal the World

中学生语数外（高中版） 2009年第10期 34-35页

作者： Michael jackson