论木材运输管理的问题与对策

木材运输管理是森林资源管理的主要环节和重要手段，是对森林采伐限额制度执行情况监督的必要措施，由于受短期和局部利益的驱动，一些木材经营者为追求高利润，采取不法手段，千方百计地进行木材违法运输，也有部分木材检查站由于管理不善，也存在执法不严和违纪犯法现象，为此，提出了加强对木材检查站的领导和建设、建立巡警队或稽查队加强对木材运输的检查、实行县（市）内木材运输证制度、进一步完善林业法律、法规和规章及强化宣传等措施。     

松针叶绿素－胡萝卜素软膏稳定性的研究

松针叶绿素－胡萝卜素软膏中含有β－胡萝卜素、维生素Ｅ、叶绿素等生物活性物质，这些物质的不足之处是稳定性较差．试验结果表明，松针叶绿素－胡萝卜素软膏在室、温避光条件下贮藏１年，不同品种产品中生物活性物质降低幅度是不同的．马尾松针叶叶绿素－胡萝卜素软膏产品中生物活性物质降低幅度分别为（％）：β－胡萝卜素１２．４，维生素Ｅ９．９，叶绿素１０．４；赤松针叶叶绿素－胡萝卜素软膏产品中生物活性物质降低幅度分别为（％）：β－胡萝卜素２５，１，维生素Ｅ．１６．４，叶绿素１２．８；樟子松针叶叶绿素－胡萝卜素软膏产品中生物活性物质降低幅度分别为（％）：β－胡萝卜素１４．８，维生素Ｅ１２．３，叶绿素２４．０．马尾松针叶叶绿素－胡萝卜素软膏产品，在室温避光条件下贮藏１５年，β－胡萝卜素损失４８．１％，维生素Ｅ损失１８．９％，叶绿素损失２９．６％．     

福建省贮木场的发展出路

本文对福建省贮木场的发展历史进行扼要回顾,分析和评述了木材市场开放后福建省贮木场的现状,针对发展中存在的问题,并紧紧围绕经济发展的两个根本转变,对贮木场的发展出路提出看法。     

Comparative effects of mu and kappa opiate agonists on the cecocolic motility in the pony.

The electrical and mechanical activity of the large intestine and its response to administration of opiate mu and kappa agonists were assessed from electrodes and inductograph coils chronically implanted on the cecocolic segment in six ponies given a diet of hay and concentrates. Before the drugs were given, migrating complexes propagating from the cecum into the colon occurred at the rate of 1.5 to 16/hour. During this propulsive activity, the cecocolic sphincter opened and closed allowing the outflow of cecal contents and preventing the backflow of colic contents. Each pony was used as its own control and was given fentanyl (0.01 and 0.05 mg/kg of body weight, IV) and U50488H (0.1 and 0.5 mg/kg, IV) at weekly intervals. The mu agonist fentanyl elicited a marked phase of inhibition of the propulsive activity and a closure of the cecocolic sphincter that lasted one to two hours depending on the dose. The kappa agonist U50488H induced an inhibition of the short spiking activity, i.e. of the resting muscle tone. It did not disturb the occurrence of migrating complexes nor that of the openings of the cecocolic sphincter. These kappa compounds may be drugs of choice to alleviate visceral pain in colic stases without inducing delay of transit unlike mu compounds.     

预制砼板天棚抹灰纵向裂缝产生的原因防治措施及处理方法的探讨

本文对天棚抹灰产生纵向裂缝的原因作出了分析,并进一步阐述了如何对砼天棚抹灰纵向裂缝这项质量通病的预防和处理方法     

秋玉米生育特点及高产栽培技术

秋玉米栽培是实现多元化熟制重要途径。生育特点为营养体小，单株生产力较低，生育期比春玉米短20d，比夏玉米短7d。但前期生长发育快，抽雄后灌浆成熟慢，虽“慢－－快－－慢”速率变化。要获得秋玉米优质高说，栽培选用早中熟紧凑型抗病良种，7月15日前播种，确保9月10日前抽雄，收获密度5000株／667m^2，采用“促－－促－－促”施肥，及时防治病虫草害，推迟带秆收获。     

茉莉酸对苹果气孔运动及抗旱性的影响

50、75、100、150 mg／L JA处理苹果叶片表皮，使开放气孔的气孔开度分别减小27．4％、37．5％、56．9％和63．8％，使关闭后的气孔在光下开放时气孔开度分别减小15％、18％、28．8％、52．5％、61．3％；处理植株后干旱胁迫，叶片相对电导率分别降低15％、18％、31％、58％，脯氨酸含量分别提高0．09％、0．40％、0．42％、0．54 ng／gFW，可溶性糖含量分别提高1．89％、2．53％、3．80％、5．06％。25 mg／L JA处理与对照均无显著差别。JA的作用表现出明显的浓度效应。     

RAPD标记鉴定果树芽变的可行性分析

在综合分析果树芽变的遗传特点以及RAPD标记技术的原理与存在问题的基础上，结合已有的研究报道，对RAPD标记应用于果树芽变鉴定中的可行性进行了探讨。对于不同的果树芽变类型，RAPD标记技术表现出不同的鉴定可行性。同时，对某些有关的问题提出了相应的建议。     

Analysis and pharmacokinetics of cimaterol in growing Holstein steers.

Pharmacokinetic parameters for the beta 2-adrenergic agonist, cimaterol (CIM), were determined in growing Holstein steers. Compartmental analysis was used after measurement of CIM in body fluids by affinity chromatography and HPLC using UV detection. Recoveries from spiked plasma and urine standards were 70 +/- 1.2% and 68 +/- 1.1%, respectively. The minimum detection level in plasma was 1 ng/mL and the average CV was 5.1% for concentrations that ranged from 1 to 30 ng/mL. Four steers (276 +/- 24 kg) received 15 mg of CIM by bolus intravenous injection. Plasma CIM levels declined in a biphasic manner with half-lives of 2.5 min for the distribution phase and 54 min for the elimination phase. A two-compartment open model was used to describe the disappearance of CIM and the following pharmacokinetic parameters were obtained: central compartment volume (Vc) = .76 L/kg, apparent volume of distribution (Vd) = 4.1 L/kg, and transfer rate constants from the central to peripheral compartment (k12) = .177/min, from the peripheral to central compartment (k21) = .054/min and elimination from the central compartment (kel) = .074/min. After 8 h, total urinary CIM accounted for only 18.3% of the administered dose. Results suggest that circulating concentrations of CIM in growing steers are influenced by its accumulation in an unidentified peripheral pool and its conversion into unknown metabolite(s) before elimination.     

Eastern equine encephalitis in a flock of emus (Dromaius novaehollandiae).

Eastern equine encephalitis (EEE) was diagnosed in a flock of emus in southeastern Louisiana. The outbreak involved juvenile and adult breeders ranging in age from 20 to 36 months, with an attack rate of 76% and a case fatality rate of 87%. The diagnosis was confirmed by isolation and characterization of the viral agent, and by detection of EEE antibody in two recovered emus. High mortality was preceded by marked depression, hemorrhagic diarrhea, and emesis of blood-stained ingesta. On postmortem examination, hemorrhagic enteritis and multiple petechia of viscera were observed. Microscopic changes included severe necrosis of hepatocytes, intestinal mucosa, and necrotizing vasculitis of the spleen and lamina propria of the intestine. No nervous system lesions were observed. This outbreak occurred concurrently with EEE in horses and was attributed to unseasonably heavy rainfall with an abundance of arthropod vectors and proximity to free-living reservoir host species.