نتایج جستجو برای: planar bedding structure

تعداد نتایج: 1620825  

Journal: :Journal of dairy science 2016
R F Rowbotham P L Ruegg

On modern dairy farms, environmental mastitis pathogens are usually the predominant cause of mastitis, and bedding often serves as a point of exposure to these organisms. The objective of this longitudinal study was to determine bacterial populations of 4 different bedding types [deep-bedded new sand (NES), deep-bedded recycled sand (RS), deep-bedded manure solids (DBMS), and shallow-bedded man...

Journal: :Discrete Mathematics 2007

1998
Mark S. Honeyman Jay Harmon

and Implications A small demonstration sow herd has been housed during breeding and gestation in a deep-bedded hoop structure. Conception rates, number of pigs born alive, and birth weights were excellent. These results indicate that hoops provide a realistic alternative for housing gestating sows. A discussion of the decision considerations related to animal environment, sow behavior, bedding ...

Journal: :Contemporary topics in laboratory animal science 1998
Carolyn Reeb Robert Jones David Bearg Hendrick Bedigan David Myers Beverly Paigen

The purpose of the study was to assess the microenvironment in separately ventilated mouse cages at differing ventilation rates, mice populations, and frequency of bedding changes. We monitored intracage temperature, relative humidity, and concentrations of ammonia and carbon dioxide during 3 experiments. First, the effect of ventilation rate on the microenvironment of cages housing adult male ...

E. Raeisi, H. Rajabi, S.M.R. Aghamiri,

ABTRACT Background: In nuclear medicine, phantoms are mainly used to evaluate the overall performance of the imaging systems and practically there is no phantom exclusively designed for the evaluation of the software performance.  In this study the Hoffman brain phantom was used for quantitative evaluation of reconstruction techniques. The phantom is modified to acquire t...

Journal: :Applied animal behaviour science 2000
Wechsler Schaub Friedli Hauser

In order to reduce straw input, soft lying mats are used increasingly instead of straw bedding in cubicle systems for dairy cows. This study aimed at comparing different types of soft lying mats with straw bedding regarding cow behaviour and leg injuries. Data were collected on five farms with straw bedding and on 13 farms using four types of soft lying mats consisting of different materials. O...

Journal: :محیط شناسی 0
محمدحسین فاتحی دانشجوی دکتری محیط زیست دانشکدة مهندسی شیمی و نفت دانشگاه صنعتی شریف جلال شایگان استاد محیط زیست دانشکدة مهندسی شیمی و نفت دانشگاه صنعتی شریف

landfill and incineration are two common methods mostly used for disposal of huge quantities of solid wastes. the bioconversion ability of earthworms in vermicomposting process of organic waste in different types of bedding materials was investigated to produce more valuable products as an economical and effective alternate method for solid waste management. in this work organic waste (obtained...

ژورنال: مواد پرانرژی 2019

A new high energetic copper(II) complex, [Cu(μ-DAMT)Cl2]2, was prepared in reaction between 4,5-diamino-3-methyl-4H-1,2,4-triazol-1-ium chloride (DAMT.HCl)and copper(II) nitrate and identified by elemental analysis and spectral characterization. The spectral and physical characterizations of the product confirm formation of a binuclear structure of the copper(II). In the predicted structure of ...

ابریشمیان, محمدصادق, واثقی, نوشین,

In this article, a planar multilayered structure is considered as a radar absorber for normal and oblique incidence plane wave. We used actual dispersive material which could be used as a metamaterial for our structure. The formulation can respond any arbitrary polarization i.e. TE or TM. The optimizations are done in a wide frequency band and at a wide range of incident angles that has reached...

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