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The molecular weight dependence of the distribfition of polymer molecules between the coacervate and the dilute phases on the phase separation of polymethylmethacrylate-acetone-methanol system has been proved to follow the relation first derived by Flory for binary systems: f"_j/f′_j = Qe~_j where f"_j and f′_j are the weight fractions of the polymer molecules of molecular weight M_j in the coacervate and in the dilute phases respectively, while Q and σ are parameters.

1。聚甲基丙烯酸甲酯-丙酮-甲醇体系的两次分相实验用θ-溶剂中的沉降速度法测定分相前试样和浓相的分子量分布曲线，得到高分子在浓稀相重量分配的分子量依赖关系 f_j=Qe~证实Flory的溶度函数形式与实际相符，并适用于三元体系的相分离，但Q值与两相体积比R值并不相同。 2。再分级使级分的分子量分布宽度随再分级次数的增加而减小，通常认为到第三次再分级其效果已不显著并不确实。

Basic fertilizer (organic fertilizer 500kg/667m2) add medium-term (organic fertilizer 500kg/667m2) facilitates favor to high-yield with the best conprehensive quality;density（40cm×60cm）with the highest yield; plastic mulching can significantly increase plant height, leaf width, leaf length, mature leaves, basal culm thickness, the first grade cormels weight and the second grade cormels weight; the first grade cormels of red sprout clocasia escalenta weight and yield had the obvious phenomenon of rapid growth in the medium expansion period of clocasia escalenta (July 14); an appropriate increase in plant height and stem yield was conducive to the increase in corn yield, the increase in corn yield favor to the first grade cormel numbers, the first grade cormel yield, the second grade cormel numbers, the second grade cormel yield, and thus obtain a higher yield.

基肥（有机肥500kg/667m2）+中期（有机肥500kg/667m2）有利于获得高产，综合品质最好；密度（40cm×60cm）产量最高；地膜覆盖可明显提高植株高度、叶宽、叶长、成叶数、茎基粗度、子芋和孙芋重量；红芽芋子芋重量和产量在芋膨大中期（7月14日）具有明显的快速增长现象；适当增加株高和茎叶产量有利于母芋产量的增加，母芋产量的增加有利于子芋个数、子芋产量、孙芋个数、孙芋产量的增加，从而获得较高的产量。

In this research, the ~ and F2 of the crosses between a natural mutant 慪34?with super-minute grain and 慪38?with super-large grain,慡huhui 881擲huhui 527?with middle grain size were carried out to study the inheritance of the grain shape (grain length, grain width, grain thickness and grain length/width ratio) and 1000-grain weight. The main results are summarized as below:? The F1 grain length, grain width, grain thickness and 1000-grain weight of three crosses were lay between the two parents and tended to Y34, which indicated that those grain traits were all governed by the dominant effect of Y34 and influenced by both female and male parents. The differences of F1 grain length, grain width, grain thickness and 1000-grain weight of positive and negative crosses between Y38 and Y34 indicated the existence of cytogene effects.? The broad heritabilities of major grain traits were calculated.

本研究利用一份水稻极小粒自然突变材料Y34与一份水稻极大粒材料Y38、两份常规籽粒大小材料蜀恢881、蜀恢527的杂交F_1及F_2，对主要粒形性状（粒长、粒宽、粒厚、长宽比）及千粒重进行了遗传研究，根据遗传研究的结果利用微卫星标记结合F_2群分法对控制Y34短粒性状基因进行了分子标记定位，主要结果如下：●各组合F_1粒长、粒宽、粒厚和千粒重介于双亲之间且明显偏向于小值亲本 Y34，这表明粒长、粒宽、粒厚和千粒重均主要受小值亲本显性基因的控制并同时也受大值亲本核基因的影响。Y34与Y38正反交F_1在粒长、粒宽、粒厚、千粒重等性状上存在差异，表明存在细胞质效应。

A rubber composition for a tire improving friction performance on ice, comprising 0.5 to 20 parts by weight of a nonmetallic fiber having an average fiber diameter of 1 to 100 μm and an average fiber length of 0.1 to 5 mm, and 0.5 to 30 parts by weight of a filler having at least 2 projections and an average length of the projections of at least 10 μm based on 100 parts by weight of a diene rubber, and a pneumatic tire comprising the same.

提供了一种改善冰上摩擦性能的轮胎用橡胶组合物，以及含有该橡胶组合物的充气轮胎。一种轮胎用橡胶组合物，以100重量份的二烯橡胶为基准，还含有0.5～20重量份平均纤维直径为1～100μm并且平均纤维长度为0.1～5mm的非金属纤维，以及0.5～30重量份的具有至少2个突起并且平均突起长度至少为10μm的填料，以及一种含有该橡胶组合物的充气轮胎。

My baby is now 5-month, and three months before the development of height and weight were normal, 61 centimeters height, weight 12 kg, since the first three months after the reduction in appetite, eating横抱milk does not like the original one can eat 120 milliliters of milk, to four months when the first can only eat 40 milliliters of milk, after more than hospital treatment, eating MAMIAI, no obvious Pikexin electuary results, a month ago, went to Beijing Children's Hospital to see a doctor, opened Xiaoerkang, athletes Xiaoshi Oral Liquid and so on, has just started to eat better when, a few days later without effect, because the spleen and stomach weakness should not lead to effective absorption of nutrition, started missing Zinc, growth and development is almost stopped, sparse hair, nearly two months of height, weight, no significant growth, but also mental state line, is consistent with the symptoms described in medical rickets disease, do not know how good the spleen and stomach as soon as possible conditioning to restore growth and development.

我家孩子现在5个月大了，三个月前身高体重发育均正常，身高61厘米，体重12斤，自从第三个月后，食量减少，吃奶不喜欢横抱，原先一次能吃120毫升牛奶，到四个月大时一次仅能吃40毫升牛奶，后到多家医院治疗，吃妈咪爱、脾可欣均未明显见效，一个月前又到北京儿童医院看医生，开了小儿康、健儿消食口服液等，刚开始吃时效果较好，几天后又无效果，因为脾胃虚弱导致不能有效吸收营养，开始缺锌、生长发育几乎停止，头发稀疏，近两个月身高、体重没有明显增长，但精神状态还行，现症状符合中医学上所说疳症，不知如何能尽早调理好脾胃，恢复生长发育。

Material and MethodsRA Rabbit Model group: 15 early RA rabbits of the same weight and variety Control group:10 normal rabbits of the same weight and varietyMethods of making RA rabbit model:elect 15 normal rabbits of the same weight and variety, dissolve Ovalbumin in 0.9% sodium chloride solution, to make the solution of 20mg/ml concengtration, blend the same quantity of complete Freund′s Adjuvant equably ,inject the mixed solution into endermic tissue of the rabbit′s scapular section, making the rabbits allergic, inject 1 ml of the mixed solution to one rabbit every time, inject 1 ml of the mixed solution in 5 different places of the rabbit′s scapular section, inject the rabbit one time every week,inject 3 weeks continuously,it turned out to be that the rabbits will be allergic, inject Ovalbumin blent with the 0.9% sodium chloride solution into the knee joint cavity of the rabbits in the fourth week, 5 mg Ovalbumin every knee joint cavity,two knees of every rabbit of the 15 rabbits are both injected,the arthrosis diameter and the exterior temperature of the knees will be added obviously in 24 hours,and they will drop gradually,at the time of the 14th or 21th day, the arthrosis diameter and the exterior temperature of the knees will get to the balance time,the incidence rate of RA is 100%.after the RA model succeeds,it is the early time of RA from the first week to the fourth week,after the fourth week,it is the late time of RA, the cartilage of the femoral condyle and the subchondral bone cortices will be changed unrecoverily.

资料与方法RA模型组：早期RA家兔模型15只，品种及体重接近。对照组：正常家兔10只，品种及体重接近。RA家兔模型制作方法：选取15只成年家兔，体重、品种接近，将卵蛋白溶解于生理盐水，配成浓度为20mg/ml的溶液，与等量完全弗氏佐剂混匀，注入家兔肩胛区皮下致敏，每只家兔每次注射1ml，于肩胛区5个不同区域注射，每周一次，连续注射3周而致敏，第4周向膝关节腔注射卵蛋白生理盐水溶液，每只关节腔注射5mg卵蛋白，15只家兔膝关节全部注射，24h内此关节直径和表面温度大幅度上升，以后缓慢下降，至14～21d达到平台期，发病率达100%。造模成功后第1～4周为早期改变，第4周以后出现不可逆的关节软骨及骨破坏。采用高频超声对RA模型组与对照组的膝关节髌上囊液体厚度、滑膜及股骨髁软骨厚度及软骨下骨皮质的回声情况进行对比观察。结果RA组模型组膝关节髌上囊积液及滑膜的厚度明显厚于对照组，其股骨髁软骨的厚度与对照组相比无明显差异，其软骨下骨皮质与对照组相比无明显改变。

A series homopolyme of ethylene synthesised by metallocene catalyst was analyzed by the high temperature gelatin permeation chromatography. The results showed that the molecular weight distribution changed not too much when the ratio of Al/Ti ranging between 1000 and 4000, while the molecular weight distributed increased from 2.48 to 2.81 when the ratio ranging between 4000 and 7000; catalyst D had the lowest activity to be used as asymmetric metallocene catalyst; the curve of molecular weight moved much to the left with the increases of temperature and two active centres appeared when the temperature is 70℃.

通过高温凝胶渗透色谱对茂金属催化合成的一系列乙烯均聚物进行了分析，可以看出Al/Ti比从1000变到4000时，分子量分布曲线图变化不大，而从4000变到7000时，变化相当大，分布宽度从2.48增至2.81；催化剂D的活性最小，可作为非对称性茂系金属催化剂；该聚合体系分子量的大小受聚合温度的影响很明显，随温度的升高，分子量分布曲线图向左发生很大位移，在聚合温度为70℃时存在两个活性相当的活性中心。

Obese children have a higher frequency of flatfoot, greater foot dimensions, and less change in foot breadth between weight-bearing and non-weight-bearing conditions than normal weight children.

此外，儿童过重及肥胖的比率约为20%，且肥胖的儿童具有较高的扁平足盛行率、较大的足部尺寸以及较小的足宽站坐改变量。

After the commencement of fermentation 3-4 days, then fermented grape Add to the equivalent weight of 1 / 20 of Bingtang or sugar, that is, the twice-sugar grapes for the total weight of the weight of 1 / 10, will be submerged sugar in mixing grape juice Uniform.

发酵启动后三到四天时，再放入相当于发酵葡萄重量1/20的冰糖或白糖，即两次放的糖的总重量为葡萄重量的1/10，将糖浸入葡萄汁中搅拌均匀。

Result Twenty-nine summer maize hybrids released for commercial production in Shandong province were divided into three types: high-test weight, medium-test weight type and low-test weight type.

结果］将山东省最新审定的29个玉米品种划分为三类，高容重型、中容重型和低容重型。

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。