检索结果-南通市图书馆

FE65:a hub for neurodevelopment

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第9期19卷 1883-1884页

作者： Yuqi Zhai laura lok-Haang Ng dennis Dik-long Chau Kwok-Fai lau School of life Sciences Faculty of ScienceThe Chinese University of Hong KongHong Kong Special Administrative RegionChina

FE65,initially identified as a binding partner of amyloid precursor protein(APP),is an adaptor protein enriched in the brain and regulated during ***65 belongs to the FE65 protein *** family is comprised of three memb... 详细信息

关键词： family development partner

Sequential good lattice point sets for computer experiments

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

Science China Mathematics 2024年第9期67卷 2153-2170页

作者： Xue-Ru Zhang Yong-Dao Zhou Min-Qian liu dennis K.J.lin NITFID LPMC&KLMDASRSchool of Statistics and Data ScienceNankai UniversityTianjin 300071China Department of Statistics Purdue UniversityWest LafayetteIN 47907USA

Sequential latin hypercube designs(SlHDs) have recently received great attention for computer experiments, with much of the research restricted to invariant spaces. The related systematic construction methods are inflexible, and algorithmic methods are ineffective for large designs. For designs in contracting spaces, systematic construction methods have not been investigated yet. This paper proposes a new method for constructing SlHDs via good lattice point sets in various experimental spaces. These designs are called sequential good lattice point(SGlP) sets. Moreover, we provide efficient approaches for identifying the(nearly)optimal SGlP sets under a given criterion. Combining the linear level permutation technique, we obtain a class of asymptotically optimal SlHDs in invariant spaces, where the l1-distance in each stage is either optimal or asymptotically optimal. Numerical results demonstrate that the SGlP set has a better space-filling property than the existing SlHDs in invariant spaces. It is also shown that SGlP sets have less computational complexity and more adaptability.

关键词： contracting space maximin distance nested latin hypercube design sequential design space-fillingdesign

Dynamics of self-hybridized exciton–polaritons in 2D halide perovskites

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

light(Science & Applications) 2024年第1期13卷 13-22页

作者： Surendra B.Anantharaman Jason lynch Christopher E.stevens Christopher Munley Chentao li Jin Hou Hao Zhang Andrew Torma Thomas Darlington Francis Coen Kevin li Arka Majumdar PJames Schuck Aditya Mohite Hayk Harutyunyan Joshua R.Hendrickson Deep Jariwala Department of Electrical and Systems Engineering University of PennsylvaniaPhiladelphiaPA19104USA KBR Inc. BeavercreekOH45431USA Air Force Research laboratory Sensors DirectorateWright-Patterson Air Force BaseOH45433USA Department of Physics University of WashingtonSeattleWA98195USA Department of Physics Emory UniversityAtlantaGA30322USA Department of Chemical and Biomolecular Engineering Rice UniversityHoustonTX77005USA Department of Materials Science and Nanoengineering Rice UniversityHoustonTX77005USA Applied Physics Program Smalley‐Curl InstituteRice UniversityHoustonTX77005USA Department of Mechanical Engineering Columbia UniversityNew YorkNY10027USA Department of Electrical and Computer Engineering University of WashingtonSeattleWA98195USA

Excitons,bound electron–hole pairs,in two-dimensional hybrid organic inorganic perovskites(2D HOIPs)are capable of forming hybrid light-matter states known as exciton-polaritons(E–Ps)when the excitonic medium is confined in an optical *** the case of 2D HOIPs,they can self-hybridize into E–Ps at specific thicknesses of the HOIP crystals that form a resonant optical cavity with the ***,the fundamental properties of these self-hybridized E–Ps in 2D HOIPs,including their role in ultrafast energy and/or charge transfer at interfaces,remain ***,we demonstrate that>0.5µm thick 2D HOIP crystals on Au substrates are capable of supporting multiple-orders of self-hybridized E–P *** E–Ps have high Q factors(>100)and modulate the optical dispersion for the crystal to enhance sub-gap absorption and *** varying excitation energy and ultrafast measurements,we also confirm energy transfer from higher energy E–Ps to lower energy E–***,we also demonstrate that E–Ps are capable of charge transport and transfer at *** findings provide new insights into charge and energy transfer in E–Ps opening new opportunities towards their manipulation for polaritonic devices.

关键词： charge polar excitation

Oviposition Site Preference and Its Effects on Subsequent Development of Variegated Grasshopper (Zonocerus variegatus l.) under laboratory Conditions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Entomology 2024年第3期12卷 143-154页

作者： Saffea Joseph Torto Abu James Sundufu Alusaine Edward Samura Sahr Ngoba Fomba dennis Peter Musa Skeku Alfred Kanu Prince Emmanuel Norman Department of Crop Protection School of Agriculture and Food Sciences Njala Sierra Leone Department of Horticulture School of Natural Resources Management Njala University Njala Sierra Leone Department of Crop Science School of Agriculture and Food Sciences Njala University Njala Sierra Leone Germplasm Enhancement and Seeds Systems Sierra Leone Agricultural Research Institute Freetown Sierra Leone

Female grasshoppers can affect the fitness of their offspring through their selection of oviposition site. Knowledge of soil type on oviposition, and its effects on subsequent development can provide guidelines for habitat manipulations that reduce the harmful effects of these pests on farmers fields. The influence of soil types on the oviposition site preference of variegated grasshopper (Zonocerus variegatus l.) reared some cassava (Manihot esculenta Crantz) varieties, was investigated in a cage trial carried out at the Bio factory laboratory, School of Agriculture and Food Sciences, Njala University, Sierra leone during 2022/2023. The treatments comprised three soil types (Sandy, loamy and Clay), each with three replications laid out in a randomized complete block design (RCBD) in wooden cages. Data were collected on the following development parameters including, Net reproductive growth ratio (R0), Generation time (Tc), Intrinsic rate of increase (rm), Finite rate of increase (), Doubling time (Dt), and overall survivorship. Findings revealed that, Z. variegatus l. preferred sandy soil in which, on average, most eggs were deposited (338, 6.62 4.40), followed by loamy soil, 286 (5.53 3.96), and then, clayey soil, 200 (3.91 3.85);though, the differences were not significant. This study established that Z. variegatus deposited more eggs in sandy soil > loamy soil > clayey soil, respectively;and subsequent survivorship of the immature unto mature adult insect, revealed a similar order. This indicates that the sandy soil is the most preferred substrate for oviposition and subsequent development into adult insects.

关键词： Development Oviposition Oviposition Site Preference Soil Types Variegated Grasshopper

Microwave drying kinetics and quality characteristics of corn

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Agricultural and Biological Engineering 2013年第1期6卷 90-99页

作者： Songül Gürsoy Ruplal Choudhary dennis G.Watson Department of Agricultural Machinery Faculty of AgricultureDicle University21280DiyarbakirTurkey Department of Plant Soil and Agricultural SystemsMC 4415Southern Illinois UniversityCarbondaleIL 62901 USA

In recent years,microwave(MW)drying has gained popularity as an alternative drying method for a wide variety of food and agricultural products because of increasing concerns over product quality and production ***,the determination of drying kinetics that accurately describes microwave drying characteristics is crucial for the optimization of operating parameters,performance improvement of the drying system and product *** objective of this study was to investigate the drying kinetics and the quality characteristics of corn kernels,especially the effects of different initial moisture contents(18.3%,26.3%,34.3%and 42.3%db),MW power levels(70,175 and 245 W)and exposure time(80 s and 120 s)on the drying kinetics,drying rate and various key quality *** results indicated that the increased drying rate at higher power levels(P3,245 W)reduced the drying time considerably but increased stress crack index and reduced *** addition,it reduced bulk density,true density and thousand grain weight(TGW).The germination rate of corn was the highest at MW power level P1(70 W),with the lowest drying rate and observed to decrease with increase in initial moisture *** reduction in exposure time decreased stress crack index and increased germination rate,bulk density and true *** correlation analysis among drying rate,germination,stress-crack index(SCI),bulk density,true density and TGW showed that increasing drying rate could lead to an increase in SCI and decrease in germination,bulk density and true density.

关键词： microwave drying corn stress-crack germination bulk density true density

On the origin of microbial magnetoreception

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

National Science Review 2020年第2期7卷 472-479页

作者： Wei lin Joseph l.Kirschvink Greig A.Paterson dennis A.Bazylinski Yongxin Pan Key laboratory of Earth and Planetary Physics Institute of Geology and Geophysics Chinese Academy of Sciences Institutions of Earth Science Chinese Academy of Sciences France-China Joint laboratory for Evolution and Development of Magnetotactic Multicellular Organisms Chinese Academy of Sciences Division of Geological & Planetary Sciences California Institute of Technology Earth-life Science Institute Tokyo Institute of Technology Department of Earth Ocean and Ecological Sciences University of Liverpool School of life Sciences University of Nevada at Las Vegas College of Earth and Planetary Sciences University of Chinese Academy of Sciences

A broad range of organisms, from prokaryotes to higher animals, have the ability to sense and utilize Earth’s geomagnetic field—a behavior known as magnetoreception. Although our knowledge of the physiological mechanisms of magnetoreception has increased substantially over recent decades, the origin of this behavior remains a fundamental question in evolutionary biology. Despite this, there is growing evidence that magnetic iron mineral biosynthesis by prokaryotes may represent the earliest form of biogenic magnetic sensors on Earth. Here, we integrate new data from microbiology, geology and nanotechnology, and propose that initial biomineralization of intracellular iron nanoparticles in early life evolved as a mechanism for mitigating the toxicity of reactive oxygen species(ROS), as ultraviolet radiation and free-iron-generated ROS would have been a major environmental challenge for life on early Earth. This iron-based system could have later been co-opted as a magnetic sensor for magnetoreception in microorganisms, suggesting an origin of microbial magnetoreception as the result of the evolutionary process of exaptation.

关键词： magnetoreception biomineralization magnetotactic bacteria exaptation

Update on endoscopic pancreatic function testing

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2011年第35期17卷 3957-3961页

作者： Tyler stevens Mansour A Parsi Department of Gastroenterology and Hepatology Digestive Disease Institute The Cleveland Clinic FoundationCleveland OH 44195 United States

Hormone-stimulated pancreatic function tests (PFTs) are considered the gold standard for measuring pancreatic exocrine function. PFTs involve the administration of intravenous secretin or cholecystokinin, followed by collection and analysis of pancreatic secretions. Because exocrine function may decline in the earliest phase of pancreatic fibrosis, PFTs are considered accurate for diagnosing chronic pancreatitis. Unfortunately, these potentially valuable tests are infrequently performed except at specialized centers, because they are time consuming and complicated. To overcome these limitations, endoscopic PFT methods have been developed which include aspiration of pancreatic secretions through the suction channel of the endoscope. The secretin endoscopic pancreatic function test (ePFT) involves collection of duodenal aspirates at 15, 30, 45 and 60 min after secretin stimulation. A bicarbonate concentration greater than 80 mmol/l in any of the samples is considered a normal result. The secretin ePFT has demonstrated good sensitivity and specificity compared with various reference standards, including the "Dreiling tube" secretin PFT, endoscopic ultrasound, and surgical histology. Furthermore, a standard autoanalyzer can be used for bicarbonate analysis, which allows the secretin ePFT to be performed at any hospital. The secretin ePFT may complement imaging tests like endoscopic ultrasound (EUS) in the diagnosis of early chronic *** paper will review the literature validating the use of ePFT in the diagnosis of exocrine insufficiency and chronic pancreatitis. Newer developments will also be discussed, including the feasibility of combined EUS/ ePFT, the use of cholecystokinin alone or in combination with secretin, and the discovery of new protein and lipid pancreatic juice biomarkers which may complement traditional fluid analysis.

关键词： Endoscopic pancreatic function test Pancreatic function testing Chronic pancreatitis Pancreatic exocrine insufficiency

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

In Memoriam:*** ***

International Soil and Water Conservation Research 2021年第4期9卷 485-489页

作者： dennis C.Flanagan Richard M.Cruse James l.Baker Paige Chyu USDA-Agricultural Research Service National Soil Erosion Research LaboratoryWest LafayetteINUSA Department of Agronomy Iowa State UniversityAmesIAUSA Department of Agricultural&Biosystems Engineering Iowa State UniversityAmesIAUSA International Research and Training Center on Erosion and Sedimentation BeijingChina

The soil erosion research and soil and water conservation global community lost a treasured member on November 20,2020,when *** Matthew laflen(Fig.1)*** one with a friendly welcoming smile,John had hundreds of friends,both personally and professionally throughout the *** article includes many of his professional and scientific contributions,and impacts from his research and outreach activities.

关键词： soil hundreds professional

Effects of the frequency and the rate of N enrichment on community structure in a temperate grassland

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Plant Ecology 2018年第5期11卷 685-695页

作者： Yunhai Zhang Jing Wang Carly J.stevens Xiaotao lü Nianpeng He Changhui Wang Xingguo Han State Key laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of SciencesNo.20 NanxincunXiangshanBeijing 100093China lancaster Environment Centre Lancaster UniversityLancaster LA14YQUK Department of Agroecology Aarhus UniversityBlichers Allé20Tjele 8830Denmark University of the Chinese Academy of Sciences No.19 Yuquan RoadShijingshan DistrictBeijing 100049China Erguna Forest-Steppe Ecotone Research Station CAS Key Laboratory of Forest Ecology and ManagementInstitute of Applied EcologyChinese Academy of SciencesNo.72 Wenhua RoadShenhe DistrictShenyang 110016China Synthesis Research Center of Chinese Ecosystem Research Network Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences11ADatun RoadChaoyang DistrictBeijing 100101China

Aims Nitrogen(N)enrichment caused by human activities threatens bio-diversity and alters plant community composition and *** has been found that heavy and infrequent N inputs may over-estimate species extinction,but it remains unclear whether plant community structure will equally respond to frequent reactive N enriched *** We independently manipulated the rates and the frequencies of N addition in a temperate steppe,northern China,between 2008 and *** Findings We found that plant community structure changes,measured by‘Euclidean distance’involving species richness,composition and productivity,were significantly positively related to increasing N enrichment rates rather than *** in aboveground net primary productivity(ANPP),plant species richness and shifts in dominant species were *** ANPP increased with N enrichment,whereas species richness *** frequency of N enrichment increased species richness but had no impacts on community ANPP and the relative ANPP of the two dominant spe-cies,C3 perennial bunchgrass Stipa grandis and C3 perennial rhi-zome grass leymus *** ANPP and relative ANPP of the two dominant species were significantly negatively correlated with each ***,changes in the relative ANPP of *** was negatively associated with the changes in community *** 5 years’treatment,direct influence of the frequency of N en-richment on plant community structure was not observed,but the effects of the rate of N enrichment were *** results sug-gested that further study in various ecosystems and with long-term and well-controlled comparisons the frequency *** rate of N enrichment may still be needed.

关键词： biodiversity dominance effect nitrogen addition frequency nitrogen deposition productivity