天津白公猪性发育过程中促黄体素和睾酮变化规律

用放免法测定了6头天津白公猪从出生到7月龄之间外周血清中促黄体素（LH）和睾酮（T）浓度的变化规律。结果显示，LH和T浓度变化规律基本一致。LH和T均从出生后便开始快速上升（P〈0．05），并均在0．5月龄达到首次高峰后便下降。LH浓度在3～4．5月龄之间相对较高（P〈0．05），并于4月龄时达到峰值，之后出现一定程度下降并保持相对稳定。T浓度在1.5～3月龄之间维持在极低水平，3．5～4月龄之间有一定程度的上升但不显著；随后急剧上升，4．5月龄时T浓度极显著升高（P〈0．01）；之后呈现逐渐的、不显著的上升，但7月龄时T浓度显著高于4．5月龄值。结果表明，天津白公猪的LH和T两激素的分泌范型在5～7月龄之间逐渐成熟。

“吴人伐慎,白公败之”再探——兼及楚平王嫡孙熊胜与“吴人伐慎,白公败之”的动因

本文对春秋时期吴、楚文化互动中的一个特殊历史人物——熊胜作全面的历史分析。这位由伍子胥带到吴国、并由伍子胥抚养长大的楚平王嫡孙,对其生长环境、个性形成对其后对楚国的政治影响等作客观分析。同时,对与熊胜密切相关的吴、楚百年战争的最后一战——"吴人伐慎,白公败之"在分析和推测时,亦指出这场战争与楚国惠王时的"白公之乱"有着直接因果关系,而战争的原因则极可能是:吴国与熊胜共同演出了一出政治双簧——吴国以发动战争并以自己的失败给熊胜一个发动政变的机会,从而以协助制造楚国内乱来破解可能出现的楚、越夹击并减轻楚对吴国的压力等。而熊胜则为实现其政治野心,故需要一个进入国都以发动政变的借口和理由。而吴国人送给他的这场胜利,则满足了他的政治需要。正是在吴国谋略与熊胜阴谋的交互运作下,"吴人伐慎,白公败之"由此产生。春秋时期楚国历史上的白公胜之乱,亦由此而生。

天津白公猪生殖器官发育和生殖激素变化规律研究

试验选用不同年龄天津白公猪２８头，测定了其性成熟前生殖器官发育和生殖激素分泌变化规律．结果表明：天津白公猪性成熟前发育过程有新生期、初情期开始期和初情三个生长高峰．新生期和初情期开始以后的血清ＬＨ和Ｔ浓度较高，睾丸及附睾均快速生长；３月龄时精子发生开始、曲精细管管腔开始出现；４月龄时普遍存在管腔，管径迅速增加到１４１μｍ，管腔内有游离精子存在；４．５月龄时血清睾酮浓度急剧上升到（３．５４±０．９１）μｇ／Ｌ．５～６月龄阶段睾丸和附睾又出现一次快速生长，曲精细管内普遍存在游离精子，血清促黄体素和睾酮浓度相对稳定．天津白公猪初情期大致在１５５～１７０ｄ之间，在７～８月龄时达到性成熟，可以初配利用．

不同性别猪只的生长性能分析

通过对上海某猪场法系大白母猪、阉公猪和公猪各30头的饲养试验，分析3种类别的猪在40～100 kg阶段日采食量、料重比、日增重、活体背膘厚、眼肌面积、眼肌高度的差异。结果显示，料重比，阉公猪分别比母猪和公猪显著高15.05%和11.85%；日增重，阉公猪分别比母猪和公猪显著低10.77%和8.93%；活体背膘厚，公猪分别比母猪和阉公猪高13.28%和3.21%；眼肌面积，阉公猪分别比母猪和公猪高1.76%和4.71%；眼肌高度，阉公猪分别比母猪和公猪高3.25%和6.49%。阉公猪从90～100 kg体重开始采食量明显高于公猪和母猪，提示在生产上应该在阉公猪到达90 kg时尽早上市销售，或者在这一阶段到来时开始限饲以降低成本。

马铃薯品种红纹白无性变异的研究

本研究工作是在1962—1964年间进行的。主要研究了马铃薯中的一个品种红纹白的无性变异现象。首先观察和收集了自然界天然发生的红纹白变异材料,而且进一步从芽眼挖除、X射线照射处理来人工地获得变异。在这个基础上,作者提出了该品种具有嵌合结构的解释,同时认为马铃薯的无性变异具有多样性,由嵌合结构所引起的无性变异只是无性变异的一种形式。本研究为无性变异这一领域和马铃薯育种工作提供了一些方法和资料。

Matrix porosity calculation in volcanic and dolomite reservoirs and its application

Matrix porosity calculations of fractured and vuggy reservoirs, such as volcanics and weathered dolomite, are one of the problems urgently needed to solve in well-log evaluation. In this paper, we first compare the an empirical formula for porosity calculation from full diameter rhyolite core experiments with the matrix porosity formulas commonly used. We discuss the applicability of the empirical formula in fractured and vuggy reservoirs, such as intermediate-basic volcanics and weathered dolomite. Based on core analysis data, the error distribution of the calculated porosity of our empirical formula and the other porosity formulas in these reservoirs are given. The statistical error analysis indicates that the our empirical formula provides a higher precision than the other porosity formulas. When the porosity is between 1.5% and 15%, the acoustic experiment formula can be used not only for acidic volcanics but also in other fractured and vuggy reservoirs, such as intermediate-basic volcanics and weathered dolomite. Moreover, the formula can reduce the effects of borehole enlargement and rock alteration on porosity computation.

A Geographic Information Systems approach for classifying and mapping forest management category in Baihe Forestry Bureau, Northeast China

This paper demonstrates a Geographic Information Systems （GIS） procedure of classifying and mapping forest management category in Baihe Forestry Burea, Jilin Province, China. Within the study area, Baihe Forestry Bureau land was classified into a two-hierarchy system. The top-level class included the non-forest and forest. Over 96% of land area is forest in the study area, which was further divided into key ecological service forest （KES）, general ecological service forest （GES）, and commodity forest （COM）. COM covered 45.0% of the total land area and was the major forest management type in Baihe Forest Bureau. KES and GES accounted for 21.2% and 29.9% of the total land area, respectively. The forest management zones designed with GIS in this study were then compared with the forest management zones established using the hand draw by the local agency. There were obvious differences between the two products. It suggested that the differences had some to do with the data sources, basic unit and mapping procedures. It also suggested that the GIS method was a useful tool in integrating forest inventory data and other data for classifying and mapping forest zones to meet the needs of the classified forest management system.

Wildlife Crossing Zones along the Ring Changbai Mountain Scenic Highway, China

The 84-km long Changbai Mountain scenic Ring highway encircles and bisects the nature reserve. With the expected increasing traffic flow, increased wildlife vehicle collisions and barrier effects are likely. In order to identify wildlife crossing zones and future protective measurement, the authors carried out 10 wildlife highway crossing surveys during the winter in 2008-2009. For each 5-kin section, the authors recorded highway crossings of all small/mid-sized and large mammals and one large protected bird species, the hazel grouse （Bonasa bonasia） and noted snow depth and the dominant vegetation type. The authors detected 12 mammal species and one avifauna species crossing the highway 502 times. The smallest of mammal was the Eurasian red squirrel （Sciurus vulgaris）. Large mammals detected included the wild boar （Sus scrofe） （64） and brown bear （Ursus arctos） （1）. The average number of wildlife crossings per 5 km was 29.5. It was found that species richness and crossing frequency was higher in sections with broad leaf forest compared to sections with white birch secondary forest significantly. The authors suggested that disturbance of broad leaf forest be minimized during construction and strict protection be established for broad leaf forests around Changbai Mountain National Nature Reserve.

PrP 106-126 Altered PrP mRNA Gene Expression in Mouse Microglia BV-2 Cells

Prion diseases are infectious and fatal neurodegenerative diseases.The pathogenic agent is an abnormal prion protein aggregate.Microglial activation in the centre nervous system is a characteristic feature of prion disease.In this study,we examined the effect of PrP 106-126 on PrP mRNA gene expression in Mouse microglia cells BV-2 by real-time quantitative PCR.PrP mRNA expression level was found to be significantly increased after 18 h exposure of BV-2 cells to PrP 106-126,with 3-fold increase after 18 h and 4.5-fold increase after 24 h and BV-2 cells proliferating occurred correspondingly.Our results provide the first in vitro evidence of the increase of PrP mRNA levels in microglial cells exposed to PrP 106-126,and indicate that microglial cells might play a critical role in prion pathogenesis.

Product Defect Management of Children's Toys Made in China——A renection on the two-year implementation of Children's toys recall system

The Management Regulations on Recallof Children's Toys is a recall system based onthe Management Regulations on Recall of MotorVehicles in China.During its two years,the children'stoy recall management system has helped toprevent and eliminate damage caused by defectivechildren's toys.It has also helped to protect children'shealth and safety,safeguard public safetyand interest,and improve toy manufacturers' productquality and safety awareness.However,due tothe small scale of most Chinese toy manufacturers,and the low standard of management,more effort isneeded from government departments and thecommunity to improve the recall system.

Coral Bleaching in Arrecifes de Cozumel National Park after Tropical Storm Rina in October 2011

Extensive bleaching of Montastrea annularis spp. group and several other scleractinian taxa occurred on the reefs within the Arrecifes de Cozumel National Park of Cozumel, Mexico, after the passage of Hurricane/Tropical Storm Rina. We conducted six drift dives at five different dive sites （-13 h of scuba diving） and photographed a variety of reefs scenes at depths of 10-28 m. Bleaching was noted at depths of 10-40 m in a variety of scleractinian species, including M. annularis species group, especially M. faveolata and Siderastrea siderea. Considering that local dive guides had not observed bleaching prior to the storm and the sea surface temperature did not exceed the local bleaching threshold, it is probable that the extensive rainfall associated with Hurricane/Tropical Storm Rina lowered salinity sufficiently via subsurface freshwater springs to cause bleaching in susceptible species. This suggests the need to monitor not only subsurface sea temperature but also subsurface salinity in localities where freshwater springs occur adjacent to or within coral reefs.

Clinicopathological and immunohistochemical features of pilomyxoid astrocytoma: a report of six cases

Objective： The aim of this study was to study the clinicopathological and immunohistochemical features of pilo- myxoid astrocytoma （PMA）. Methods： The clinical and pathologic features in six cases of PMA were analyzed. Immunohisto- chemical staining for glial fibrillary acidic protein （GFAP）, synaptophysin （Syn）, Chromogranin A （CgA）, cytokeratin （AEI/AE3）, epithelial membrane antigen （EMA） and Ki67 was performed on paraffin-embedded sections. Results： Among the six cases, five occurred in female patients, one was male, the age at diagnosis ranged from 2 to 15 years. Four cases were located in the hypothalamic area and optic pathway, one case in the third ventricle, and one case in left parietal lobe. On imaging, PMAs often appears as well-circumscribed mass. Microscopically, the tumor was composed of monomorphous bipolar （piloid） cells setting in a prominent myxoid background with an angiocentric radiating growth pattern in some areas. PMA lacked biphasic pattern, Rosenthal fibers and eosinophilic granular bodies which were usually typical in a classic pilocytic astrocytoma （PA）. Immunohistochemcal study showed that the tumor cells were diffusely positive for GFAP. Syn positive staining was observed in one case. The Ki67 labeling index measured less than 5%. Conclusion： PMA is a distinct aggressive variant of pilocytic astrocytoma with special histological and immunohistochemical features. It is typically a rare tumor of early childhood. Im- munohistochemical staining for GFAP and Syn is helpful in differential diagnosis.

An assessment of Charter airline benefits for Port Elizabeth and the Eastern Cape

Tourism is becoming a vital component for economic development in South Africa. The income generated by the tourism industry is about 6% of the GDP, which is significant but still falls short of the goal set by the White Paper on Tourism in 2000. In the light of South Africa hosting the 2010 Football World Cup, it is important to identify ways of sustainable tourism development that would continue to increase the benefits to the economy long after the event＇s over. The main objective of the research was to explore an idea for increasing the level of tourist income generated in the Port Elizabeth （Eastern Cape） area. The idea was researched by means of conducting a cost-benefit analysis of two tourist related projects. These projects would introduce Charter airline services between Europe and Port Elizabeth. A second objective was to identify constraints on the project or market failures which would prevent their implementation. The economic theory behind the operation of an airline showed that lease costs and aeroplane operating costs are the two most important factors determine Charter airline＇s profitability. In order to offset these costs, airlines must achieve high passenger load factors. Charter airlines have the advantage over scheduled airlines, in that they will only fly if a minimum level of people has pre-booked seats. Two aeroplanes were chosen for comparison purpose： an Airbus A 340-300 and a Boeing 767-300ER. The private benefits calculated were based on load factors between 80 and 95 percent for ticket prices of USD 667 and USD 773. In addition, to private costs and benefits, social benefits were also estimated in the form of additional secondary revenue generated. With the introduction of net social benefits, both projects become profitable. A 50 percent substitution of revenue generated by the Charter tourists reduces the profits for the both projects drastically. A project based on a Boeing 767-300ER is the most efficient project as it has the highest NPV and BCR values. A reduction in the lease cost of the Airbus 340-300 could make projects based on it more competitive. A few constraints on the establishment of a Charter airline operator based in Port Elizabeth are： the lack of adequate runway for the landing of the long-haul carriers and the need of a larger liberalisation of the aviation policy by eliminating protectionism. The cost benefit analysis undertaken in this research does not take into account social costs and benefits to the economy of establishing a Charter airline based in Port Elizabeth, such as an employment, infrastructure development and poverty alleviation. Nevertheless the analysis does suggest that there are strong private and social benefits warranting the establishment of an airline business between Europe and Port Elizabeth. The economic benefits of the tourism industry and its link to airline travel are outlined in section 3. It is shown that the growth of the airline industry is a major component and contributor to tourism growth.

Tariff Policy of the Logistics System of the Public Transport of the City

The article discusses the important part of the tariff policy of transportation of passengers by public transport, which plays a significant role in the formation of a general transportation tariff. The recommendations, given in the article, are mainly related to a Georgian example which may also be applicable to other countries, especially considering that in the process of preparation of the article, the current situation at the post-soviet states （Russia, the Ukraine, and Belarus） was also examined and taken into account, and the presented methodology is a combined version of that experience.

光輝的紅岩 激情的战斗——致复旦大学話剧团

同志們,战友們: 去年冬末,在复旦大学看了你们的《紅岩》。今年初春,又在上海艺术剧场看了你們的《紅岩》。我很幸运。剧終以后回家途中,虽是在严寒的深夜,但是,心情激奋,渾身都觉得暖热。看說明书时,我曾这样想:演員、职員来自四面八方(包括了近十个系的教师和同学),平时各人有各人的課程学业。尤其是两次演出之間,整理加工的时間很短促,恰恰又面临紧张的期終考試阶段。在这样困难的情况下,排演了这样一个有分量的大戏,而且,第二次演出又获得显著的提高。这充分显示出了你們高度的政治热情和严肃认真的創造精神,給了我很大的教育和激励。由于兴奋,我写了这封信,讲讲心里話,讲讲学习心得,也讲讲希望。

雷公藤多苷联合白芍总苷与单用雷公藤多苷在干燥综合症治疗疗效

目的:对比雷公藤多甙联合白芍总甙与单用雷公藤对干燥综合症的疗效。方法:选取2014年9月~2016年3月四川省人民医院风湿免疫科收治的干燥综合症患者60例,按照入院时间编号,偶数患者30例为对照组,该组接受单用雷公藤多甙,奇数患者30例为观察组,该组使用雷公藤多甙联合白芍总甙治疗。对比两组治疗后临床疗效、治疗前后血沉(ESR)、c反应蛋白(CRP)以及血液流变学水平。结果:1治疗后观察组的总有效率为90.00%,明显高于对照组63.33%。治疗后两组患者ESR和CRP水平均比治疗前明显下降,观察组ESR和CRP水平分别为(26.83±0.52mm/h、4.76±0.47mg/L),均比对照组(29.02±0.73mm/h、6.03±0.59mg/L)明显为低。3治疗后观察组全血粘度高切、低切和血浆粘度分别为(4.31±0.39、8.53±0.43、1.43±0.25)m Pa·s,均比对照组(5.01±0.51、9.92±0.55、1.80±0.30)m Pa·s明显为低。结论:单用雷公藤对干燥综合症有明显的治疗效果,在此基础上加用白芍总甙,则疗效更为显著。

花语

邻居搬去新居之前，送我一钵兰花，我欣然接纳，感到这是极珍贵的馈赠。兰花叶片细瘦生光，形若清癯有气质之君子，且四季翠绿，赤日炎炎也好，风刀霜剑也罢．终不能使它屈服，改变本色。兰花之花清幽淡雅，无论是开在寂寞的沟谷，还是绽于富嘛的居室，总是那般纯净，那般恬淡，不以妩媚惑人．不以浓熏醉人。居闹市，有兰花作伴，是一种福气，一种高级享受。

Possible Spectrums of 3×3 Upper Triangular Operator Matrices

Let H1, H2 and H3 be infinite dimensional separable complex Hilbert spaces. We denote by M（D,V,F） a 3×3 upper triangular operator matrix acting on Hi ＋H2＋ H3 of theform M（D,E,F）=（A D F 0 B F 0 0 C）.For given A ∈ B（H1）, B ∈ B（H2） and C ∈ B（H3）, the sets ∪D,E,F^σp（M（D,E,F））,∪D,E,F ^σr（M（D,E,F））,∪D,E,F ^σc（M（D,E,F）） and ∪D,E,F σ（M（D,E,F）） are characterized, where D ∈ B（H2,H1）, E ∈B（H3, H1）, F ∈ B（H3,H2） and σ（·）, σp（·）, σr（·）, σc（·） denote the spectrum, the point spectrum, the residual spectrum and the continuous spectrum, respectively.

The relationship between extension of lower crust and displacement of the shelf break

With deep sea petroleum explorations become more and more popular,some geological phenomena have emerged:extension of lower crust and upper crust is inhomogeneous;shelf break has been moved rapidly after crustal stretching.These geological phenomena are important to the continental margin evolution.To investigate the thinning of the whole crust and the contribution of the upper crust versus the lower crust to the crustal stretching since the Cenozoic,we calculated the stretching factors of the upper and the lower crust based on the 13 seismic lines in the Baiyun Sag from CNOOC.The results indicated that the whole crustal thickness decreases seaward while the whole crustal stretching factor increases from shelf to slope.Our calculations showed that the lower crustal stretching factor is higher than that of the upper crust in the Baiyun Sag.In the Cenozoic,deformation of the Baiyun Sag is controlled mainly by ductile shearing rather than brittle shearing.Based on the numerical modeling,we can conclude the initial crust in the Baiyun Sag is thermally attenuated.The stretching factor(β)of the lower crust increases from the north to the south of the continental margin,indicating two stretching centers:the Baiyun Sag and the Liwan Sag.The geometry of the shelf break and theβisoline trap have the similar trend in 23.8 and 13.8 Ma,both located in the intense deforming zone of the lower crust,and therefore we conclude the stretching and flowing of the lower crust cause the displacement of the shelf break before and after 23.8 Ma.