检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

第三章用采食行为评估动物福利(续完)

国外畜牧学（猪与禽） 2018年第2期38卷 59-60页

作者：唐彩琰(译) 陈建康 Birte L.Nielsen ingrid c.de jong Trevor J.deVries 不详

目前，人们对反刍动物放牧时的行为需求知之甚少。因此，在不考虑营养方面的条件时，反刍动物不进行放牧，而在室内向其提供全价混合日粮(Total Mixed Ration，TMR)日粮，这种方式是否对动物福利来说会更好，还需要进一步研究。反刍动... 详细信息

目前，人们对反刍动物放牧时的行为需求知之甚少。因此，在不考虑营养方面的条件时，反刍动物不进行放牧，而在室内向其提供全价混合日粮(Total Mixed Ration，TMR)日粮，这种方式是否对动物福利来说会更好，还需要进一步研究。反刍动物在采食习惯上具有天生的选择性，并且在某些情况下能够选择混合饲料中的某些成分，以最大限度提高自身的健康和生产力。研究表明，奶牛如果选择性采食(挑拣)投喂的混合饲料，会不利于其健康；因此，生产上会采用多种营养和管理措施来阻止奶牛的这种行为。

关键词：选择性采食行为评估动物福利反刍动物混合日粮混合饲料生产力放牧

在线全文

学校读者我要写书评

暂无评论

第三章用采食行为评估动物福利(续)

国外畜牧学（猪与禽） 2018年第1期38卷 61-64页

作者：唐彩琰(译) 陈建康(校) Birte L.Nielsen ingrid c.de jong Trevor J.deVries 不详

现代产蛋母鸡的行为模式仍然与其祖先非常相似(Dawkins，1989)，然而，与采食有关的行为仍严重受当前饲养和管理条件的影响。采用半自然环境饲养的野鸡会将其活动时间中约60％的比例用在与采食有关的行为上(Dawkins，1989)，而笼养和大... 详细信息

现代产蛋母鸡的行为模式仍然与其祖先非常相似(Dawkins，1989)，然而，与采食有关的行为仍严重受当前饲养和管理条件的影响。采用半自然环境饲养的野鸡会将其活动时间中约60％的比例用在与采食有关的行为上(Dawkins，1989)，而笼养和大型鸡舍饲养的产蛋母鸡，用于与采食行为有关的时间只占其总活动时间的40％左右(Hansen，1994)。研究表明，产蛋母鸡的采食和觅食时间长短与啄羽行为存在一定关联性(Blokhuis，1986；N?rgaard-Nielsen等，1993；Aerni等，2000；Rodenburg等，2013)。

关键词：采食行为行为评估动物福利产蛋母鸡活动时间舍饲养行为模式自然环境

determination of riding comfort on cycleways using a smartphone application

在线全文

学校读者我要写书评

暂无评论

Journal of Traffic and Transportation Engineering(English Edition) 2024年第4期11卷 747-760页

作者： Anna Niska Leif Sjögren Peter Andrén christian Weber Tineke de jong Aslak Fyhri department of Infrastructure Maintenance Swedish National Road and Transport Research Institute(VTI)Linköping SE-58195Sweden department of Safety and Behavior Institute of Transport EconomicsGaustadalleen 210349 OsloNorway

Well maintained cycleways will encourage more people to cycle,as the condition of cycleways is important for the safety,accessibility and riding comfort of *** that,only a few models used to describe the quality of service for cyclists take the surface condition into *** measuring methods are needed to enable reliable and effective assessment of surface conditions,and measurable performance criteria related to the needs of cyclists should be *** purpose of this study has been to test the reliability and validity of using accelerometers in smartphones to assess the riding comfort on cycleways.A smartphone application converting three-dimensional accelerometer measurements into a single indicator for cycleways has been used to assess road surfaces in two field studies,in Sweden and Norway,*** studies assessed test sections of varying *** relate the measurements to subjective riding comfort assessments by cyclists,recruited cyclists collected quantitative data using the app,whilst also rating their perceived riding comfort by completing a *** were also related to standard road surface condition indicators,generated from a road surface tester equipped with 19 laser sensors:international roughness index(IRI),mega-and *** results show that it is possible to describe the unevenness of a cycleway using the technology present in smartphones.A software application can be used to collect and analyse data from the acceleration sensors in the phone,which can then be used to describe the riding comfort of *** is mainly the unevenness in the 50-1000 mm sizerange that create the greatest discomfort for cyclists,and intermittent vibrations are perceived as more uncomfortable than more evenly distributed ***,IRI is not a relevant measurement for describing the riding comfort of cyclists.

关键词： cyclist comfort Assessment Road surface measurement Smartphone application

Optimizing intrinsic cocatalyst activity and light absorption efficiency for efficient hydrogen evolution of 1D/2D ReS_(2)-cdS photocatalysts via control of ReS_(2)nanosheet layer growth

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2024年第1期168卷 103-113页

作者： Ghufran Aulia Bin Azizar jong Wook Hong department of chemistry University of UlsanUlsan 44610Korea

The visible-light-driven hydrogen evolution is extremely important,but the poor charge transfer capa-bility,a sluggish evolution rate of hydrogen,and severe photo-corrosion make photocatalytic hydrogen evolution *** this study,we present 1D/2D ReS_(2)-cdS hybrid nanorods for photocatalytic hy-drogen evolution,comprised of a ReS_(2)nanosheet layer grown on cdS *** found that precise control of the contents of the ReS_(2)nanosheet layer allows for manipulating the electronic structure of Re in the ReS_(2)-cdS hybrid *** ReS_(2)-cdS hybrid nanorods with optimal ReS_(2)nanosheet layer content dramatically improve photocatalytic hydrogen evolution ***,photocatalytic hydro-gen evolution activity(64.93 mmol g^(−1)h^(−1))of ReS_(2)-cdS hybrid nanorods with ReS_(2)nanosheet layers(Re/cd atomic ratio of 0.051)is approximately 136 times higher than that of pure cdS nanorods under visible light ***,intimated coupling of the ReS_(2)nanosheet layer with cdS nanorods reduced the surface trap-site of the cdS nanorods,resulting in enhanced photocatalytic *** de-tailed optical and electrical investigations demonstrate that the optimal ReS_(2)nanosheet layer contents in the ReS_(2)-cdS hybrid nanorods can provide improved charge transfer capability,catalytic activity,and light absorption *** study sheds light on the development of photocatalysts for highly efficient photocatalytic hydrogen evolution.

关键词： Photocatalyst Hydrogen evolution reaction ReS_(2)-cdS heterostructure control of ReS_(2)nanosheet layer growth Optimization of cocatalyst activity and light absorption

Nonsteroidal anti-inflammatory drugs before endoscopic ultrasound guided tissue acquisition to reduce the inc.dence of post procedural pancreatitis

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 2024年第8期30卷 811-816页

作者： Mike de jong Foke van delft christine Roozen Erwin-Jan van Geenen Tanya Bisseling Peter Siersema Marco Bruno department of Gastroenterology and Hepatology Radboud University Medical CenterNijmegen 6525 GANetherlands department of Gastroenterology and Hepatology Erasmus University Medical CenterRotterdam 3015 GDNetherlands

Endoscopic ultrasound(EUS)with fine needle aspiration or fine needle biopsy is the gold standard for sampling tissue to diagnose pancreatic cancer and auto-immune pancreatitis or to analyze cyst *** most common reported adverse event of fine needle aspiration and/or fine needle biopsy is acute pancreatitis,which is likely induced by the same pathophysiological mechanisms as after en-doscopic retrograde cholangiopancreatography(ERcP).According to the current European Society of Gastrointestinal Endoscopy guideline,nonsteroidal anti-inflammatory drugs are administered prior to ERcP as a scientifically proven treatment to reduce post-ERcP pancreatitis inc.dence rate.A single suppository of diclofenac or indomethacin prior to EUS guided tissue acquisition(TA)is harm-less in healthy *** it is associated with low costs and,most important,may prevent a dreadsome complication,we strongly recommend the adminis-tration of 100 mg diclofenac rectally prior to *** will explain this recom-mendation in more detail in this review as well as the risk and pathophysiology of post-EUS TA pancreatitis.

关键词： Pancreatitis Endoscopic ultrasound Tissue acquisition Nonsteroidal antiinflammatory drugs Pancreatic cancer

Hyperreflective photonic crystals created by shearing colloidal dispersions at ultrahigh volume fraction

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Microsystems & Nanoengineering 2024年第1期10卷 161-173页

作者： Minji Kim jong Bin Kim Shin-Hyun Kim department of chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea

colloidal crystallization serves as one of the most economic and scalable production methods for photonic ***,insufficient optical performance,nonuniformity and low reproducibility remain challenges for advanced high-value *** this study,we optimally formulate a photocurable dispersion of silica particles and apply shear flow to unify the orientation of the colloidal crystals,ensuring high optical performance and *** silica particles experience strong repulsion at ultrahigh volume fractions of 50%but demonstrate low mobility,leading to polycrystalline *** shear flow to the dispersions allows the silica particles to rearrange into larger crystalline domains with a unidirectional orientation along the *** shear-induced structural change produces absolute reflectivity at the stopband as high as 90%and a high transparency of 90%at off-resonant wavelengths with minimal diffusive ***,the strong interparticle repulsion ensures a uniform volume fraction of particles throughout the dispersion,reducing deviations in the optical *** intricately micropattern the photocurable dispersions using ***,the photonic films and patterns can be stacked to form multiple layers,displaying mixed structural colors and multiple reflectance peaks without sacrificing *** superior photonic materials hold promise for various optical applications,including optical components and anticounterfeiting patches.

关键词： properties. dispersion reflectivity

cool white light and tunable multicolor emission from Tb^(3+)/Dy^(3+)co-activated glasses under different excitations for WLEDs

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 Rare Earths 2024年第1期42卷 46-56,I0002页

作者： L.Vijayalakshmi K.Naveen Kumar jong Dae Baek department of Automotive Engineering Yeungnam UniversityGyeongsanGyeongbuk38541Republic of Korea department of Mechanical Engineering Yeungnam UniversityGyeongsan38541Republic of Korea

A set of co-doped(Tb^(3+)/Dy^(3+))lithium zinc borate(LZB)glasses were developed by melt *** structural evaluation was performed for synthesized glassy *** Dy^(3+)and Tb^(3+)individually doped glasses exhibit intense yellow and green luminescence bands at 575 nm(^(4)F_(9/2)→^(6)H_(13/2))and543 nm(^(5)D_(4)→^(7)F_(5)),*** sensitization effect of Dy^(3+)on Tb^(3+)was analyzed by increasing the Tb^(3+)content with respect to the optimum Dy^(3+)content(0.5 mol%)in Dy^(3+)/Tb^(3+).The spectral overlay of Dy^(3+)luminescence and Tb^(3+)absorption profiles,Dy^(3+)/Tb^(3+)PL spectra under different excitations 352,362,376,and 385 nm,shortening decay lifetimes of Dy^(3+)in Dy^(3+)/Tb^(3+)co-activated glasses,energy transfer(ET)parameters,chromaticity coordinates and their corresponding correlated temperatures all help to explain ET from Dy^(3+)to Tb^(3+).At 385 nm of Dy^(3+)excitation,the optimized co-activated(0.5Dy^(3+)+1.0Tb^(3+)):LZB glass displays cool white light *** non-radiative ET from Dy^(3+)to Tb^(3+)is dominated by electric dipole-dipole interaction and its ET efficiency was calculated to be 63%.At the same time,reverse ET from Tb^(3+)to Dy^(3+)was also *** shift in color coordinates from dominant yellow to greenish-yellow,green and white light emission suggests that Dy^(3+)/Tb^(3+)coactivated LZB glasses can be a potential candidate for UV converted multicolor and white light emitting devices.

关键词： Rare earths Photoluminescence Energy transfer Spectral overlap decay lifetime Multicolor emitting LEDs

Porously Reduced 2-Dimensional Bi_(2)O_(2)cO_(3) Petals for Strain-Mediated Electrochemical cO_(2) Reduction to HcOOH

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2024年第1期7卷 215-221页

作者： Won Seok cho Dae Myung Hong Wan Jae Dong Tae Hyung Lee chul jong Yoo Donghwa Lee Ho Won Jang jong-Lam Lee department of Materials Science and Engineering Pohang University of Science and Technology(POSTECH)Pohang Gyungbuk 37673Korea department of Materials Science and Engineering Research Institute of Advanced Materials Seoul National UniversitySeoul 08826Korea

Here we introduce bismuth-based catalysts for the efficient electrochemical reduction of cO_(2)to formic acid(HcOOH),which are composed of petal-shaped Bi_(2)O_(2)cO_(3)(BOc)that spontaneously formed from Bi thin film in aqueous carbonate solution at room *** the electrochemical reduction process,the BOc petals transform to reduced BOc(R-BOc)consisting of individual BOc and Bi *** mismatch between both domains induces biaxial strain at the *** functional theory calculations suggest that the tensile strain on the Bi domain stabilizes the*OcHO intermediate,reducing the thermodynamic barrier toward cO_(2)conversion to *** with the thermodynamic benefit and the unique nanoporous petal-shaped morphology,R-BOc petals have a superior Faradaic efficiency of 95.9%at-0.8 V_(RHE)for the electrochemical conversion of cO_(2)to *** work demonstrates that the spontaneously formed binary phases with desirable lattice strain can increase the activity of bismuth catalysts to the cO_(2)reduction reaction;such a strategy can be applicable in design of various electrocatalysts.

关键词： bismuth carbon dioxide reduction formic acid heterointerfaces strain

SUV39H1-driven NFATc1 methylation is essential for the c-cbl-mediated degradation of NFATc1 in an osteoclast lineage

在线全文

学校读者我要写书评

暂无评论

Genes & Diseases 2024年第4期11卷 86-89页

作者： Do-Won Jeong Hye-Jin Kim jong-Wan Park Seulbee Lee Hyeryeon Jung Eugene c.Yi Nacksung Kime Yang-Sook chun department of Biomedical Sciences Seoul National University College of MedicineSeoul 03080Republic of Korea department of Physiology Seoul National University College of MedicineSeoul 03080Republic of Korea Ischemic/Hypoxic Disease Institute Seoul National University College of MedicineSeoul 03080Republic of Korea department of Molecular Medicine and Biopharmaceutical Sciences Graduate School of Convergence Science and Technology and College of Medicine Or College of PharmacySeoul National UniversitySeoul 03080Republic of Korea department of Pharmacology Chonnam National University Medical SchoolGwangju 61469Republic of Korea

Bone undergoes continuous remodeling by tightly-coordinated actions of bone-resorbing osteoclasts and boneforming osteoblasts.1 Recent studies document that the dysregulation of histone methylation profiles is associated with the progression of ***,the specific epigenetic modifiers are incompletely *** this study,we demonstrate an inhibitory role of a variegation 3-9 homolog 1(SUV39H1)in osteoclast formation.

关键词： osteoclast remodeling incomplete