检索结果-南通市图书馆

Does feeding more phases reduce ammonia concentrations from broiler litter?

Animal Nutrition 2022年第4期11卷 152-159页

作者： madri brink Geert P.J.Janssens Evelyne Delezie Flanders Research Institute for Agriculture Fisheries and Food(ILVO)Animal Sciences UnitScheldeweg 689090 MelleBelgium Department of Veterinary and Biosciences Ghent UniversityHeidestraat 199820 MerelbekeBelgium

We compared a 3-and 5-phase feeding program in terms of ammonia concentrations measured at litter level,litter composition and quality,nitrogen(N)utilization,performance,welfare,and meat deposition in broilers.A total of 744 Ross 308 male broilers was divided into 2 treatments,each with 6 *** 3-phase diets were formulated to CP and digestible lysine contents of 205 and 11.5 g/kg(0 to 9 d),195 and 10.8 g/kg(9 to 24 d),and 183.3 and 10.15 g/kg(24 to 39 d),*** 5-phase diets had additional phases from 17 to 24 d and 32 to 39 d with CP and digestible lysine contents of 188 and 10.4 g/kg and 177 and 9.8 g/kg,*** 5 phases reduced the NH3concentrations at litter level by37.95%and 20.81%at 23(P<0.05)and 37 d of age(P<0.05),*** was a tendency for a lower litter total ammoniacal nitrogen concentration for the 5-phase treatment than the 3-phase treatment at 24 and 39 d of age(P<0.1 for both).Total N concentration of the litter also tended to be lower for the 5-phase treatment at 39 d of age(P<0.1).The lower NH3coincided with a lower average litter pH at 24 and 32 d of age(P<0.05 for both).Birds fed the 5-phase treatments had a lower incidence of foot lesions at 24 d of age(P<0.001).Performance as well as carcass yield could be maintained,except for FCR,which was higher for the 5-phase treatment between 17 and 24 d of age and the overall period(P<0.05 and<0.001,respectively).The impact of the 5-phase treatment regarding the utilization of N(digestibility,excretion,and retention)was less clear,however the NH3volatilized from the litter was significantly *** 5 phases may therefore potentially reduce the NH3emitted from broiler houses which has several environmental and health *** the 5-phase treatment resulted in a significant decrease in feed efficiency,growth performance and meat deposition were maintained.

关键词： Broiler Ammonia Phase feeding Crude protein Performance

来源：

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

Reduction of dietary crude protein and feed form:Impact on broiler litter quality,ammonia concentrations,excreta composition,performance,welfare,and meat quality

引用

Animal Nutrition 2022年第2期9卷 291-303页

作者： madri brink Geert P.J.Janssens Peter Demeyer Ozer Bagci Evelyne Delezie Flanders Research Institute for Agriculture Fisheries and Food(ILVO)Animal Sciences UnitScheldeweg 689090 MelleBelgium Department of Nutrition Genetics and EthologyGhent UniversityHeidestraat 199820 MerelbekeBelgium Flanders Research Institute for Agriculture Fisheries and Food(ILVO)Agricultural Engineering UnitBurg.Van Gansberghelaan 1159820 MerelbekeBelgium Department of Mechanical Engineering Eindhoven University of Technology5600 MB-EindhovenNetherlands.

Nitrogen(N)excreted by poultry is converted to ammonia(NH3),presenting an environmental risk and a health risk to the farmer and animals.A study was performed to investigate the effect of reduced CP and feed form on broiler performance and welfare,meat and litter quality,N utilization,and NH3 concentrations at litter level.A total of 2,232 Ross 308 male broilers was divided into 6 treatments and 6 replicates,which was fed diets in both pellet and mash forms with different CP levels of 205.0 g/kg(H,high),187.5 g/kg(M,intermediate)and 175.0 g/kg(L,low)in the grower phase and 195.0 g/kg(H),180.0 g/kg(M)and 165.6 g/kg(L)in the finisher *** amino acids(AA)were supplemented to maintain digestible AA-to-digestible lysine *** dietary CP content to 187.5 g/kg in the grower phase and 180.0 g/kg in the finisher phase reduced NH3 concentrations at litter level(P<0.001),but a further reduction in dietary CP had no additional *** treatments had better litter qualities and lower incidences of foot and hock lesions than pellet treatments at d 38(P<0.001).In addition,treatments with reduced CP had lower incidence of foot lesions at d 38(P<0.001).Broilers fed pelleted diets had higher ADFI,ADG,and final BW,improved feed conversion ratio(FCR),and heavier carcasses(P<0.001)than those fed mash diets over a production period of 39 *** could not be maintained when birds were fed L CP pelleted *** study demonstrated that,with the supplementation of AA to meet requirements,the concentration of dietary CP can be reduced to 187.5 and 180.0 g/kg in the grower and finisher phases respectively,without impairing broiler performance,meat yield and *** diets were favorable when considering the overall litter quality and welfare of the ***,they could not maintain the same broiler performance and slaughter yield as pelleted *** from the present study may assist the poultry sector towards a socially acceptable lowemission

关键词： Broiler Ammonia Crude protein Feed form Performance

来源：

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

Interrelationships between Length of the Day, Moon Distance, Phanerozoic Geodynamic Cycles, Tidal Dissipation and Earth’s Core: Review and Analysis

引用

International Journal of Geosciences 2024年第5期15卷 396-415页

作者： Heinz-Jürgen brink Independent Researcher Hannover Germany

The rotation of the Earth and the related length of the day (LOD) are predominantly affected by tidal dissipation through the Moon and the growth of the Earth’s core. Due to the increased concentration of mass around the rotation axis of the spinning Earth during the growth of the core the rotation should have been accelerated. Controversially the tidal dissipation by the Moon, which is mainly dependent on the availability of open shallow seas and the kind of Moon escape from a nearby position, acts towards a deceleration of the rotating Earth. Measurements of LOD for Phanerozoic and Precambrian times open ways to solve questions concerning the geodynamical history of the Earth. These measurements encompass investigations of growth patterns in fossils and depositional patterns in sediments (Cyclostratigraphy, Tidalites, Stromatolites, Rhythmites). These patterns contain information on the LOD and on the changing distance between Earth and Moon and can be used as well for a discussion about the growth of the Earth’s core. By updating an older paper with its simple approach as well as incorporating newly published results provided by the geoscientific community, a moderate to fast growth of the core in a hot early Earth will be favored controversially to the assumption of a delayed development of the core in an originally cold Earth. Core development with acceleration of Earth’s rotation and the contemporaneous slowing down due to tidal dissipation during the filling of the ocean may significantly interrelate.

关键词： Length of the Day Moon Distance Phanerozoic Geodynamic Cycles Tidal Dissipation Earth’s Core

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

原意主义解释与建构主义解释

法律方法

引用

法律方法 2024年第3期 237-261页

作者： [美]大卫·布林克何俊毅(译) 加州大学圣地亚哥分校哲学系圣地亚哥大学法学院圣地亚哥大学法学院法律与哲学研究所西北师范大学法学院

德沃金的法律解释主张可以被认为是一种原意主义法律解释。其认为法律条文意在表达道德或政治原则,为此需遵循语义原意或制宪者意图。法院应根据基本原则和法律规则解释法律,法律原则和法律规则都是语义开放的。法律解释必须确立基本概... 详细信息

德沃金的法律解释主张可以被认为是一种原意主义法律解释。其认为法律条文意在表达道德或政治原则,为此需遵循语义原意或制宪者意图。法院应根据基本原则和法律规则解释法律,法律原则和法律规则都是语义开放的。法律解释必须确立基本概念的最佳观念。制宪者同时具有具体意图和抽象意图,宪法裁决应恪守其抽象意图。对宪法解释要进行原意主义限制,将这种限制作为能够为政治道德提供宪法解释和司法审查的方式。原意主义必须考虑制宪者的语义意图。原则原意主义是建构性解释的重要组成部分。

关键词：原意主义语义假设制宪者意图原则原意主义建构性解释

来源：

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

Past,present and future of industrial plantation forestry and implication on future timber harvesting technology

引用

Journal of Forestry Research 2020年第2期31卷 339-351页

作者： Andrew McEwan Enrico Marchi Raffaele Spinelli Michal brink Department of Agriculture Food and Forest SystemsFlorence UniversityVia San Bonaventura1350145 FlorenceItaly School of Natural Resource Management Nelson Mandela Metropolitan UniversityGeorge CampusGeorgeSouth Africa Consiglio Nazionale delle Ricerche Istituto per la BioEconomiaVia Madonna del Piano 10Sesto FiorentinoItaly Australian Forest Operations Research Alliance University of the Sunshine CoastLocked Bag 4Maroochydore DCQLD 4558Australia University of Pretoria Private Bag X20HatfieldPretoria 0028South Africa

Plantation forests are established,and expanding,to satisfy increasing global demand for timber *** societal values,such as safety,productivity,environmental,quality and social are influencing the plantation forestry *** is primarily driven through an ever increasing world population,which in turn influences the way nations view the value systems by which they *** people require more resources-also forest ***,the availability of information is influencing the pace of technological *** changes could result in a difference in the management of plantations that could affect the forest engineering systems of the *** review aimed to summarize the current status of plantation forests;summarize future developments and possible scenarios in forest plantation management for the various products;and assess whether these developments in a plantation environment could affect the harvesting systems *** influencing the form of plantations include the type and nature of the plantation owner;the change in demand for different and new forest products;climate change factors,including the use of biomass for energy,carbon sequestration and trading;ecosystem services and other products and services;and sustainability certification of forest *** impact and influence of these factors were summarised into a series of key drivers that will influence the technology used in harvesting machines,as well as the choice of harvesting machines,systems and *** drivers were the effect of variations in tree size,the expansion of plantation areas onto more difficult terrain,diversity in plantation design,increased attention towards site impacts and the increased use of biomass for *** information is provided regarding how the harvesting systems could be affected.

关键词： Plantations Forest products Biomass Harvesting system Mechanization Trends Technology

来源：

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

Involuntary admission and treatment of patients with mental disorder

引用

Neuroscience Bulletin 2015年第1期31卷 99-112页

作者： Simei Zhang Graham Mellsop Johann brink Xiaoping Wang Mental Health Institute of The Second Xiangya Hospital Hunan Province Technology Institute of PsychiatryKey Laboratory of Psychiatry and Mental Health of Hunan ProvinceCentral South University Waikato Clinical School University of Auckland University of British Columbia VancouverBritish ColumbiaCanada

Despite the efforts of the World Health Organization to internationally standardize strategies for mental-health care delivery,the rules and regulations for involuntary admission and treatment of patients with mental disorder still differ markedly across countries. This review was undertaken to describe the regulations and mental-health laws from diverse countries and districts of Europe（UK,Austria,Denmark,France,Germany,Italy,Ireland,and Norway）,the Americas（Canada,USA,and Brazil）,Australasia（Australia and New Zealand）,and Asia（Japan and China）. We outline the criteria and procedures for involuntary admission to psychiatric hospitals and to community services,illustrate the key features oflaws related to these issues,and discuss their implications for contemporary psychiatric practice. This review may help to standardize the introduction oflegislation that allows involuntary admission and treatment of patients with mental disorders in the mainland of China,and contribute to improved mental-health care. In this review,involuntary admission or treatment does not include the placement of mentally-ill offenders,or any other aspect of forensic psychiatry.

关键词： involuntary admission involuntary treatment mental-health legislation compulsory admission commitment criteria

来源：

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

Adhesive wear mechanisms uncovered by atomistic simulations

引用

Friction 2018年第3期6卷 245-259页

作者： Jean-Fran?ois MOLINARI Ramin AGHABABAEI Tobias brink Lucas FRéROT Enrico MILANESE Civil Engineering Department Materials Science Department école Polytechnique Fédérale de Lausanne Department of Engineering-Mechanical Engineering Aarhus Universitet

In this review, we discuss our recent advances in modeling adhesive wear mechanisms using coarse-grained atomistic simulations. In particular, we present how a model pair potential reveals the transition from ductile shearing of an asperity to the formation of a debris particle. This transition occurs at a critical junction size, which determines the particle size at its birth. Atomistic simulations also reveal that for nearby asperities, crack shielding mechanisms result in a wear volume proportional to an effective area larger than the real contact area. As the density of microcontacts increases with load, we propose this crack shielding mechanism as a key to understand the transition from mild to severe wear. We conclude with open questions and a road map to incorporate these findings in mesoscale continuum models. Because these mesoscale models allow an accurate statistical representation of rough surfaces, they provide a simple means to interpret classical phenomenological wear models and wear coefficients from physics-based principles.

关键词： adhesive wear molecular dynamics continuum mechanics

来源：

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

Bacterial communities associated with natural and commercially grown rooibos (Aspalathus linearis)

引用

Pedosphere 2020年第6期30卷 778-790页

作者： Casparus J.brink Anneke POSTMA Etienne SLABBERT Ferdinand POSTMA A.Muthama MUASYA Karin JACOBS Department of Microbiology University of StellenboschPrivate Bag X1Stellenbosch 7600South Africa Central Analytical Facility University of StellenboschPrivate Bag X1Stellenbosch 7602South Africa Department of Biological Sciences University of Cape TownPrivate Bag X3Rondebosch 7701South Africa

Aspalathus linearis is a commercially important plant species endemic to the Cape Floristic Region of South Africa and is used to produce a herbal tea known as rooibos *** interactions between *** and soil bacteria play an important role in the survival of Aspalathus plants in the highly nutrient-poor,acidic fynbos *** aim of this study was to characterize and compare rhizosphere and bulk soil bacterial communities associated with natural and commercially grown ***,as well as the effect of seasonal changes on these *** communities were characterized using high throughput amplicon sequencing,and their correlations with soil chemical properties were *** N-fixing bacterial community was characterized using terminal restriction fragment length polymorphism and real time quantitative polymerase chain ***,Proteobacteria,and Acidobacteria were the most dominant bacterial phyla detected in this *** similar bacterial communities were associated with natural and commercially grown *** differences in the bacterial community were observed between rhizosphere and bulk soils collected in the dry season,while no significant differences were detected in the wet *** study provides insights into bacterial community structure and potential factors shaping bacterial community structure with commercially important ***.

关键词： bulk soil fynbos N-fixing bacterial community operational taxonomic unit rhizosphere soil 16S rRNA sequencing

来源：

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

Bone morphogenetic protein-2 is a negative regulator of hepatocyte proliferation downregulated in the regenerating liver

引用

World Journal of Gastroenterology 2006年第47期12卷 7621-7625页

作者： Cui-Ping Xu Wen-Min Ji Gijs R van den brink Maikel P Peppelenbosch Department of Digestive Diseases First Clinical College Shanxi Medical University Taiyuan 030001 Shanxi Province China Department of Gastroenterology & Hepatology Leiden University Medical Center Leiden The Netherlands Department of Cell Biology Faculty of Medical Sciences University of G--roningen G--roningen The Netherlands

AIM: To characterize the expression and dynamic changes of bone morphogenetic protein (BMP)-2 in hepatocytes in the regenerating liver in rats after partial hepatectomy (PH), and examine the effects of BMP-2 on proliferation of human Huh7 hepatoma cells. METHODS: Fifty-four adult male Wistar rats were randomly divided into three groups: A normal control (NC) group, a partial hepatectomized (PH) group and a sham operated (SO) group. To study the effect of liver regeneration on BMP-2 expression, rats were sacrificed before and at different time points after PH or the sham intervention (6, 12, 24 and 48 h). For each time point, six rats were used in parallel. Expression and distribution of BMP-2 protein were determined in regenerating liver tissue by Western blot analysis and immunohistochemistry. Effects of BMP-2 on cell proliferation of human Huh7 hepatoma cell line were assessed using an MTT ***: In the normal liver strong BMP-2 expression was observed around the central and portal veins. The expression of BMP-2 decreased rapidly as measured by both immunohistochemistry and Western blot analysis. This decrease was at a maximum of 3.22 fold after 12 h and returned to normal levels at 48 h after PH. No significant changes in BMP-2 immunoreactivity were observed in the SO group. BMP-2 inhibited serum induced Huh7 cell ***: BMP-2 is expressed in normal adult rat liver and negatively regulates hepatocyte proliferation. The observed down regulation of BMP-2 following partial hepatectomy suggests that such down regulation may be necessary for hepatocyte proliferation.

关键词： Bone morphogenetic protein-2 Partial hepatectomy Liver regeneration, Hepatocellular carcinoma

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nonpolar Al_(x)Ga_(1−x)N/Al_(y)Ga_(1−y)N multiple quantum wells on GaN nanowire for UV emission

引用

Nano Research 2022年第8期15卷 7670-7680页

作者： Sonachand Adhikari Olivier Lee Cheong Lem Felipe Kremer Kaushal Vora Frank brink Mykhaylo Lysevych Hark Hoe Tan Chennupati Jagadish Department of Electronic Materials Engineering Research School of PhysicsThe Australian National UniversityCanberraAustralian Capital Territory 2601Australia Semiconductor Device Fabrication Group CSIR-Central Electronics Engineering Research InstitutePilaniRajasthan 333031India Australian National Fabrication Facility ACT Node Research School of PhysicsThe Australian National UniversityCanberraAustralian Capital Territory 2601Australia Centre for Advanced Microscopy The Australian National UniversityCanberraAustralian Capital Territory 2601Australia Australian Research Council Centre of Excellence for Transformative Meta-Optical Systems Research School of PhysicsThe Australian National UniversityCanberraAustralian Capital Territory 2601Australia

Nonpolar m-plane AlGaN offers the advantage of polarization-free multiple quantum wells(MQWs)for ultraviolet(UV)emission and can be achieved on the sidewalls of selective area grown GaN *** reveal that the growth of AlGaN on GaN nanowires by metal organic chemical vapor deposition(MOCVD)is driven by vapor-phase diffusion,and consequently puts a limit on the pitch of nanowire array due to shadowing *** insight into the difficulty of achieving metal-polar AlGaN nanowire by selective area growth(SAG)in MOCVD is also provided and can be attributed to the strong tendency to form pyramidal structure due to a very small growth rate of{1011}semipolar planes compared to(0001)*** nonpolar m-plane sidewalls of GaN nanowires obtained via SAG provides an excellent platform for growth of nonpolar AlGaN *** emission from mplane Al_(x)Ga_(1−x)N/Al_(y)Ga_(1−y)N MQWs grown on sidewalls of dislocation-free GaN nanowire is demonstrated in the wavelength range of 318–343 nm.

关键词： metal organic chemical vapor deposition(MOCVD) nanowire nonpolar plane AlGaN selective area growth multiple quantum wells

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：