AAHA/AAFP pain management guidelines for dogs & cats

Pain management in dogs and cats has undergone a dramatic evolution in the past decade. Current approaches focus on anticipation and prevention of pain, as well as both pharmacologic and nonpharmacologic management techniques. The veterinary team plays an essential role in educating pet owners about recognizing and managing pain in their pets.     

规模化猪场猪繁殖与呼吸综合征感染混合细菌研究

规模化猪场爆发急性高热病,采集死猪肺脏病料和血清5份用RT-PCR方法进行PRRSVNSP2基因扩增,3份为猪繁殖与呼吸综合征阳性,编号为scwhn01,scwhn02和scwhn03.对scwhn01 NSP2基因进行克隆和序列测定分析,有30个氨基酸的不连续缺失,与VR2332,JXA1,BJ-4,HuN4,CH-1a,HB-1(sh)2002和HB-2(sh)2002的NSP2的同源率在74.2%~91.0%之间,并从病料中分离到2株细菌,编号分别为SNC0901和SNC0902,均使被攻毒小鼠死亡.16S rDNA测序并在Genbank中blast鉴定为副猪嗜血杆菌和大肠杆菌.对所分离的细菌进行17种抗生素药敏实验,对头孢噻呋、头孢噻吩等敏感;对克林霉素、阿莫西林/棒酸等中度敏感;对荷兰、林可霉素、丁胺卡那霉素和土霉素等耐药.表明该猪场因高致病性蓝耳病病毒混合感染副猪嗜血杆菌、大肠杆菌导致猪大量死亡.     

荔枝高压苗繁殖技术研究

为提高荔枝高压苗牛根率、成苗率和定植成活率，课题组１９９３至１９９４年在新平县腰街、夏洒白糯格和者新街等地，分别从ＡＢＴ生根粉的应用、母树年龄、母树光照条件和操作技术等方面进行了荔枝高压苗繁殖技术的试验研究。研究结果表明：应用１０００ｐｐｍＡＢＴ１号生根粉处理环剥口能明显缩短压苗的生根时间，提高生根率；进行高压苗繁殖应选用幼龄母树的向阳生枝条和采用效果良好的生根基质，把握好环剥、包扎等操作技术。     

A Study on the Effects of Insect Pests and Diseases on Intensively Managed Plantations

Basedon the results of monitoring the environment of China National Afforestation Project (NAP) and the investigation on insect pests and diseases in 1.2 million ha of plantations, the author elaborates the areas, species and causes of insect pests and diseases occurring in the project's areas and provides fundamental theory for guiding environmental protection and plantation establishment in a sound way. Since the project's activities strictly follovved the guideline of environmental protection in past five years, little losses were caused by some commonly insect pests and diseases.     

湖北省核桃品种资源和栽培区划

本文概述了湖北省核桃的栽培现状和生境条件，以及核桃品种资源及其分布，提出了湖北省核桃栽培区划。还对发展核桃生产的有关经营方向和措施进行探讨。     

中华富铁康900对断奶仔猪的饲喂效果试验

试验选用体重约8kg的三元杂交(杜长大)猪60头,随机分成3组,每组2个重复,分别饲喂含不同剂量中华富铁康900的饲粮,研究中华富铁康900对仔猪生产性能、肤色的影响。结果表明,以中华富铁康900取代饲粮中部分硫酸亚铁,显著提高仔猪平均日增重(P<0.05),显著降低料重比(P<0.05),明显改善仔猪肤色。根据试验效果,仔猪饲粮中中华富铁康900的添加量为2×10-4～4×10-4。     

外来农民工融入城市的非制度性障碍分析

城市化、工业化的进程中,大量农村剩余劳动力涌入城市寻找生计,并最终滞留在城市成为市民,这是世界许多国家都有过的历程,也是城市化的普遍规律.“十一五“时期,中国将进入城市化加速期,外来农民工将成为城市化的主角.然而,从目前形势看,我国农民工融入城市的进程十分缓慢,他们绝大多数被排斥在城市主流社会之外,成为城市“边缘人“.农民工市民化障碍重重,既有制度性障碍,也有政策、观念、文化、习俗等非制度性因素,对非制度性因素进行深入分析和探索,并提出解决问题的方法,有助于农民工真正融入城市社会,实现市民化.     

Asynchronous climate changes in the North Atlantic and Japan during the last termination

Pollen records from the annually laminated sediment sequence in Lake Suigetsu, Japan, suggest a sequence of climate changes during the Last Termination that resembles that of the North Atlantic region but with noticeable differences in timing. An interstadial interval commenced a few centuries earlier [approximately 15,000 years before the present (yr B.P.)] than the North Atlantic GI-1 (B?lling) event. Conversely, the onset of a Younger Dryas (YD)-like cold reversal (12,300 to 11,250 yr B.P.) postdated the North Atlantic GS-1 (YD) event by a few centuries. Climate in the Far East during the Last Termination reflected solar insolation changes as much as Atlantic influences.     

The surface of the ice-age Earth

In the Northern Hemisphere the 18,000 B.P. world differed strikingly from the present in the huge land-based ice sheets, reaching approximately 3 km in thickness, and in a dramatic increase in the extent of pack ice and marine-based ice sheets. In the Southern Hemisphere the most striking contrast was the greater extent of sea ice. On land, grasslands, steppes, and deserts spread at the expense of forests. This change in vegetation, together with extensive areas of permanent ice and sandy outwash plains, caused an increase in global surface albedo over modern values. Sea level was lower by at least 85 m. The 18,000 B.P. oceans were characterized by: (i) marked steepening of thermal gradients along polar frontal systems, particularly in the North Atlantic and Antarctic; (ii) an equatorward displacement of polar frontal systems; (iii) general cooling of most surface waters, with a global average of -2.3 degrees C; (iv) increased cooling and up-welling along equatorial divergences in the Pacific and Atlantic; (v) low temperatures extending equatorward along the western coast of Africa, Australia, and South America, indicating increased upwelling and advection of cool waters; and (vi) nearly stable positions and temperatures of the central gyres in the subtropical Atlantic, Pacific, and Indian oceans.