Based on knowledge of meteorology, pastoral meteorology and medical meteorology, the paper discusses relationship between various meteorological elements and animal husbandry production or animal disease prevention an...Based on knowledge of meteorology, pastoral meteorology and medical meteorology, the paper discusses relationship between various meteorological elements and animal husbandry production or animal disease prevention and control.展开更多
Nano-trace element additives, with a particle size of 1-100 nm, are absorbed directly by osmosis in animals without ion exchange. When added to the feed, they can not only promote the growth by own nutrition at the co...Nano-trace element additives, with a particle size of 1-100 nm, are absorbed directly by osmosis in animals without ion exchange. When added to the feed, they can not only promote the growth by own nutrition at the conventional size, but also greatly improve the utilization and ab-sorption rate of additives by animals. In this paper, the researches on micro-element feed additives such as nano-selenium, nano-copper, nano-zinc and nano-chromium were reviewed, which will provide basis for breeding production.展开更多
In Chinese ancient costume animation movies, there are problems of unreasonable cultural expression in many architectural scenes, such as not meticulous scene design and weak understanding of the relationship between ...In Chinese ancient costume animation movies, there are problems of unreasonable cultural expression in many architectural scenes, such as not meticulous scene design and weak understanding of the relationship between artistic design and image cultural expression. This is greatly different from the spirit of passing on national ethnic culture. In order to transform such situation, it is recommended to set up the concept of passing on the ethnic culture, follow the principle of creation of national art and practice of story creation, improve the style of domestic animation movies, and raise the concept of cultural creation.展开更多
The HIV-1 LTR controls the expression of HIV-1 viral genes and thus is critical for viral propagation and pathology. Numerous host factors have been shown to participate in the regulation of the LTR promoter. Among th...The HIV-1 LTR controls the expression of HIV-1 viral genes and thus is critical for viral propagation and pathology. Numerous host factors have been shown to participate in the regulation of the LTR promoter. Among them is the thyroid hormone (T3) receptor (TR). TR has been shown to bind to the critical region of the promoter that contain the NFbB and Sp1 binding sites. Interestingly, earlier transient transfection studies in tissue culture cells have yielded contradicting conclusions on the role of TR in LTR regulation, likely due to the use of different cell types and/or lack of proper chromatin organization. Here, using the frog oocyte as a model system that allows replication-coupled chromatin assembly, mimicking that in somatic cells, we demonstrate that unliganded heterodimers of TR and RXR (9-cis retinoic acid receptor) repress LTR while the addition of T3 relieves the repression and further activates the promoter. More importantly, we show that chromatin and unliganded TR/RXR synergize to repress the promoter in a histone deacetylase-dependent manner.展开更多
Particulate matter (PM) emissions from animal feeding operations (AFOs) have been considered as an important contributor to ambient PM in rural areas. Investigation of the chemical compositions of PM2.5 inside and in ...Particulate matter (PM) emissions from animal feeding operations (AFOs) have been considered as an important contributor to ambient PM in rural areas. Investigation of the chemical compositions of PM2.5 inside and in the vicinity of AFOs can enhance our understanding of the AFO emissions impact on ambient PM characteristics. This year-long field study was conducted on a commercial egg production farm to investigate ambient PM chemical compositions as impacted by the air emissions from the production houses. The PM2.5 samples were collected from five sampling stations (one in-house station and four ambient locations in four wind directions). The trace elements, major ions, organic carbon (OC) and element carbon (EC) were analyzed by X-ray florescence (XRF), ion chromatography (IC), and thermo-optical analyzer, respectively. There were significant differences in elemental compositions between PM samples from in-house station (ST1) and ambient stations (ST2-ST5). The chemical mass balance analysis revealed that OC accounted for above 50% of PM2.5 mass at in-house and ambient stations;NH4+, SO42-, and NO3- accounted for about 40.0% of the total PM2.5 mass in ambient locations and for only 12% of the total PM2.5 mass in house. The measured PM2.5 masses agreed with the sums of the masses of chemical compositions at all stations except for the in-house station. Knowledge gained from this study, with additional consideration of NH3 concentrations and emissions, will lead to better understanding of PM2.5 source and formation, fate and transport, and their atmospheric dynamics.展开更多
The main purpose of this presented article was to explain the need to study the amount of heavy metal salts in the environment where animals live, in the water, in air, and in the food and fodder consumed. This articl...The main purpose of this presented article was to explain the need to study the amount of heavy metal salts in the environment where animals live, in the water, in air, and in the food and fodder consumed. This article presents materials from the literature on the effects of heavy metal salts on the body of animals and the environment in which they live. The cited analytical data showed that the general information on the negative effects of heavy metal salts on the body is sufficient, but their effects on the digestive tract and morpho-functional properties of rabbits should be studied in depth. Therefore, we planned to focus our scientific work on this topic. The article mainly refers to salts of heavy metals cadmium, lead, and mercury (Cd, Pb, Hg). It is noted in the literature that heavy metal salts have a negative effect on the body of animals. We focused mainly on data on the effects of heavy metals on farm animals, including rabbits. But it is clear that the authors referred to were referring to experimental animals. These negative effects are manifested in the form of disorders of digestive functions, disorders of neurovegetative processes, increasing incidence of cardiovascular disease, rapid heart failure, deterioration of calcium metabolism, as well as impaired haemoglobin metabolism. Disorders of protein metabolism manifest themselves in the form of cases of hyperproteinaemia and dysproteinaemia. The results of the evaluation of the organism of healthy animals in chemically and radioactively contaminated areas showed the accumulation of significant levels of chemical elements in their organism. We mainly looked at the effects of heavy metal salts on farm animals. The cited analytical data showed that the general information on the negative effects of heavy metal salts on the body is sufficient, but the effects on the activity of organ systems in the body (respiration, blood and blood circulation, digestion, reproduction, productivity and immunological systems) have not been comprehensively studied.展开更多
With the increasing material living standards of the people,keeping pets has become a way for people to enjoy amateur life,and the tort problem of breeding animals has also been accompanied.This article will discuss t...With the increasing material living standards of the people,keeping pets has become a way for people to enjoy amateur life,and the tort problem of breeding animals has also been accompanied.This article will discuss the tort liability of breeding animals from the aspects of the characteristics,the principle of imputation,and the constitutive elements.展开更多
Animation design has comprehensive artistic features, so its unique creative and artistic modes decide that animation decision has a certain complexity. Whether in artistic conception design or expression design, Chin...Animation design has comprehensive artistic features, so its unique creative and artistic modes decide that animation decision has a certain complexity. Whether in artistic conception design or expression design, Chinese paintings all have the unique mode of thinking. The application of the design elements, thinking elements and performance elements of Chinese painting in animations will let the form, content, style more abundant. Scientific use of Chinese elements can create animation works with Chinese cultural connotation and Chinese aesthetic emotion. It can express the aesthetic needs and aesthetic ideals of Chinese culture, thereby creating a classic cartoon art image with Chinese characteristics. The paper mainly analyzes the application of Chinese painting elements in animation design.展开更多
文摘Based on knowledge of meteorology, pastoral meteorology and medical meteorology, the paper discusses relationship between various meteorological elements and animal husbandry production or animal disease prevention and control.
文摘Nano-trace element additives, with a particle size of 1-100 nm, are absorbed directly by osmosis in animals without ion exchange. When added to the feed, they can not only promote the growth by own nutrition at the conventional size, but also greatly improve the utilization and ab-sorption rate of additives by animals. In this paper, the researches on micro-element feed additives such as nano-selenium, nano-copper, nano-zinc and nano-chromium were reviewed, which will provide basis for breeding production.
文摘In Chinese ancient costume animation movies, there are problems of unreasonable cultural expression in many architectural scenes, such as not meticulous scene design and weak understanding of the relationship between artistic design and image cultural expression. This is greatly different from the spirit of passing on national ethnic culture. In order to transform such situation, it is recommended to set up the concept of passing on the ethnic culture, follow the principle of creation of national art and practice of story creation, improve the style of domestic animation movies, and raise the concept of cultural creation.
文摘The HIV-1 LTR controls the expression of HIV-1 viral genes and thus is critical for viral propagation and pathology. Numerous host factors have been shown to participate in the regulation of the LTR promoter. Among them is the thyroid hormone (T3) receptor (TR). TR has been shown to bind to the critical region of the promoter that contain the NFbB and Sp1 binding sites. Interestingly, earlier transient transfection studies in tissue culture cells have yielded contradicting conclusions on the role of TR in LTR regulation, likely due to the use of different cell types and/or lack of proper chromatin organization. Here, using the frog oocyte as a model system that allows replication-coupled chromatin assembly, mimicking that in somatic cells, we demonstrate that unliganded heterodimers of TR and RXR (9-cis retinoic acid receptor) repress LTR while the addition of T3 relieves the repression and further activates the promoter. More importantly, we show that chromatin and unliganded TR/RXR synergize to repress the promoter in a histone deacetylase-dependent manner.
文摘Particulate matter (PM) emissions from animal feeding operations (AFOs) have been considered as an important contributor to ambient PM in rural areas. Investigation of the chemical compositions of PM2.5 inside and in the vicinity of AFOs can enhance our understanding of the AFO emissions impact on ambient PM characteristics. This year-long field study was conducted on a commercial egg production farm to investigate ambient PM chemical compositions as impacted by the air emissions from the production houses. The PM2.5 samples were collected from five sampling stations (one in-house station and four ambient locations in four wind directions). The trace elements, major ions, organic carbon (OC) and element carbon (EC) were analyzed by X-ray florescence (XRF), ion chromatography (IC), and thermo-optical analyzer, respectively. There were significant differences in elemental compositions between PM samples from in-house station (ST1) and ambient stations (ST2-ST5). The chemical mass balance analysis revealed that OC accounted for above 50% of PM2.5 mass at in-house and ambient stations;NH4+, SO42-, and NO3- accounted for about 40.0% of the total PM2.5 mass in ambient locations and for only 12% of the total PM2.5 mass in house. The measured PM2.5 masses agreed with the sums of the masses of chemical compositions at all stations except for the in-house station. Knowledge gained from this study, with additional consideration of NH3 concentrations and emissions, will lead to better understanding of PM2.5 source and formation, fate and transport, and their atmospheric dynamics.
文摘The main purpose of this presented article was to explain the need to study the amount of heavy metal salts in the environment where animals live, in the water, in air, and in the food and fodder consumed. This article presents materials from the literature on the effects of heavy metal salts on the body of animals and the environment in which they live. The cited analytical data showed that the general information on the negative effects of heavy metal salts on the body is sufficient, but their effects on the digestive tract and morpho-functional properties of rabbits should be studied in depth. Therefore, we planned to focus our scientific work on this topic. The article mainly refers to salts of heavy metals cadmium, lead, and mercury (Cd, Pb, Hg). It is noted in the literature that heavy metal salts have a negative effect on the body of animals. We focused mainly on data on the effects of heavy metals on farm animals, including rabbits. But it is clear that the authors referred to were referring to experimental animals. These negative effects are manifested in the form of disorders of digestive functions, disorders of neurovegetative processes, increasing incidence of cardiovascular disease, rapid heart failure, deterioration of calcium metabolism, as well as impaired haemoglobin metabolism. Disorders of protein metabolism manifest themselves in the form of cases of hyperproteinaemia and dysproteinaemia. The results of the evaluation of the organism of healthy animals in chemically and radioactively contaminated areas showed the accumulation of significant levels of chemical elements in their organism. We mainly looked at the effects of heavy metal salts on farm animals. The cited analytical data showed that the general information on the negative effects of heavy metal salts on the body is sufficient, but the effects on the activity of organ systems in the body (respiration, blood and blood circulation, digestion, reproduction, productivity and immunological systems) have not been comprehensively studied.
文摘With the increasing material living standards of the people,keeping pets has become a way for people to enjoy amateur life,and the tort problem of breeding animals has also been accompanied.This article will discuss the tort liability of breeding animals from the aspects of the characteristics,the principle of imputation,and the constitutive elements.
文摘Animation design has comprehensive artistic features, so its unique creative and artistic modes decide that animation decision has a certain complexity. Whether in artistic conception design or expression design, Chinese paintings all have the unique mode of thinking. The application of the design elements, thinking elements and performance elements of Chinese painting in animations will let the form, content, style more abundant. Scientific use of Chinese elements can create animation works with Chinese cultural connotation and Chinese aesthetic emotion. It can express the aesthetic needs and aesthetic ideals of Chinese culture, thereby creating a classic cartoon art image with Chinese characteristics. The paper mainly analyzes the application of Chinese painting elements in animation design.
