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At harvest 9.2%–10.9% of labeled urea was leached below 40 cm soil layer.

大白菜收获时9.2%～10.9%的标记尿素被淋洗到40 cm以下土层。

Of the nitrogen supplied as inorganic fertilizer is lost under two treatments, and 30% under FAR and 26% under RAR of which leaches to depths over 40 cm of soil profile. It is therefore necessary to understand whether leached nitrogen is utilizable by deep-rooted crops.

两种施肥处理均导致65%左右的氮素损失，其中习惯施氮和推荐施氮分别导致30%和26%的氮素淋洗到40 cm以下土层，为此有必要种植蔬菜后利用深根系粮食作物吸收土壤下层氮素来降低蔬菜生产对环境的影响。

The results indicated that effects of straw mulches with different thickness (4, 8 cm) were significantly different.

研究了覆盖不同厚度稻草(4、8 cm)以及加盖普通地膜和黑色地膜对免耕马铃薯农艺性状及品质的影响。

Methods Eighty six patients with large acoustic neuromas (≥3 cm) underwent surgical treatment via suboccipical retrosigmoid transmeatal approach.

对86例单侧大型听神经瘤（直径≥3 cm）病人采用枕下乙状窦后入路显微切除肿瘤。

Result］T.novaehollandiae-viridinotata has one generation each year in Yunhe County,Zhejiang Province,and overwinters by laying eggs in chestnut trunk with diameter of 5 cm.

结果］深褐拟叶螽在浙江省云和县1年发生1代，以卵在板栗直径5 cm左右的主干上越冬。

Two series of polyurethane acrylate grafted acrylic resins (Acr-g-TPU-PETA and Acr-gPPU-PETA) self-emulsifying systems are obtained by grafting -NCO group modified polyurethane acrylates with acrylic copolymer prepared from n-butyl acrylate, styrene,βhydroxyethyl methacrylate and acrylic acid The self-emulsifying systems showed Newtonian fluidity with viscosity closed to that of water, the solid contents were around 30% The T〓 of 15～4℃ for dried film before photocuring favored film formation at room temperature DSC and DMA results showed that PU-PETA is compatible with acrylic resin in the grafted resin The TG and dTG curves for Acr-g-PU-PETA samples were substantially different from the corresponding blends, and the brodened dTG peaks for photocured grafted resin suggest that there might be multiple interactions among chain segments The photocued film of the grafted resins self-emulsifying system exhibited good overall properties with polyurethane acrylate grafts ranging from 30% to 50%, and Acr-g-TPU-PETA series showed better properties than Acr-gPPU-PETA series The adhesion of the photocured film was 1～2 grade, impact strength was 50kg-cm and flexibility was 1mm The Shore hardness and the adhesion of the film decreased markedly if PETA was replaced by HEMA as photoactive group due to the lower C=C double bond content in the grafted resin The polyhydroxy amine-linked thioxanthones photoinitiators can be evenly dispersed in self-emulsifying system without color spot appearing in the dried film The films photocured with IV〓～IV〓 generally exhibited higher Shore hardness, gloss and solventresistance than that cured with Irgacure 2959 and did not induce the rusting of the iron substrate Pigmenting with titanium oxide had no effect on the photocuring The polyhydroxy amine-linked thioxanthone IV〓 and IV〓 can be new candidates for the formulation of titanium oxide pigmented photocurable water-borne coatings for their pale-yellow appearance and slight interference with the color of the coatings WB 4759 with high water-solubility coalesced and separated from the dried resin film, and even induced the rusting of iron substrate.

以丙烯酸丁酯，甲基丙烯酸-β-羟乙酯，丙烯酸及苯乙烯合成厂丙烯酸共聚树脂，并与含-NCO端基的聚氨酯丙烯酸酯接枝反应，经水性化后，得到两个系列（Acr-g-TPU-PETA和Acr-g-PPU-PETA）各5个不同配比的丙烯酸树脂接枝聚氨酯丙烯酸酯自乳化体系，粘度与水相近，为牛顿流体，固含量30％左右。光固化前干燥涂膜的玻璃化转变温度在-15℃～4℃之间，有利于室温下成膜。DSC及DMA谱表明两种树脂基本相容。Acr-g-PU-PETA的热失重行为明显不同于共混材料，接枝样dTG峰明显宽化，表明接枝样中链段之间的相互作刚有多重性，丙烯酸树脂与聚氨酯之间有一定的相容性。接枝树脂自乳化体系光固化涂层的综合性能以聚氨酯丙烯酸酯成分为50％～30％者相对较好，且以Acr-g-TPU-PETA系列更理想。光固化膜的附着力为1～2级，冲击强度为50kg·cm，柔软性多为1mm。以HEMA代替PETA作为接枝树脂的活性基团，碳—碳双键密度太低，光固化膜交联点太少，硬度和附着力均较差。多羟基胺连硫杂蒽酮光引发剂能均匀分散于树脂自乳化体系和接枝树脂干膜中，不出现色斑，光固化膜肖氏硬度一般高于以Irgacure 2959为光引发剂的光固化膜，光泽度及耐丁酮溶剂性能均有所提高，不会诱导铁基生锈，钛白着色对光固化结果几乎没有影响。本论文所合成的多羟基胺连硫杂蒽酮光引发剂IV〓与IV〓为浅黄色，对光固化涂层的颜色干扰较小，为配制钛白着色光固化水性涂料提供了新的光引发剂。水溶性太强的WB 4759在干膜中易聚结析出，且对所附着的铁基有诱导锈蚀作用。

Methods The rate of the activated egg and the rate of lysed+dead egg were compared at different ages of ooeytes: 13, 16, 19, 22h with the electrical parameters of 0.6Kv/cm, 80μs 22h electrical poises (2p).

在0.6kV/cm、80μs、2个电脉冲(2p)下，比较了注射人绒毛膜促性腺激素后13、16、19、22h卵母细胞的激活率、碎裂＋死亡率。

Methods 98 normal primiparas were randomly divided into two groups:the study group and the control group.When the cervix opened 2-3 cm,the study group received phloroglucinol(800 mg iv),while the control group received valium(10 mg iv).Observe the delivery process and the perinatal result.

将98例正常初产妇随机分为研究组和对照组，于宫口开大2~3 cm 时，研究组静脉推注间苯三酚80 mg，对照组静脉推注地西泮10 mg，观察两组产妇用药后的产程变化及围产结局。

Methods 300 primiparas were divided into three groups. When Group A has uterus contractions with anal fold releasing, bilateral pudendal nerve was conducted by block anesthesia with lidocaine hydrochloride. When Group B has the uterus contractions with head visible on vulva gapping 2～3 cm, lidocaine hydroctdoride bilateral pudendal nerve was carried out by block anesthesia. Group C was not carried out any measures.

将300例宫口开全的初产妇分为三组，每组100例。A组宫缩时有排便感且肛门褶松开时应用盐酸利多卡因行双侧阴部神经阻滞麻醉；B组在胎头拨露2～3 cm时应用盐酸利多卡因行双侧阴部神经阻滞麻醉；C组不进行镇痛处理。

Methods: Forty ASAⅠprimiparas, aged 26-32 years, weighing 70-90 kg, height 150-170 cm, with 37-39 week gestation, underwent elective cesarean section with CSEA, were enrolled in this study.

择期脊椎-硬膜外联合阻滞下行剖宫产术患者40例，初产、ASAⅠ级、年龄26～32岁、体重70～90 kg、身高150～170 cm、孕周37～39 w。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。