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1.
提供一种在IBM-PC及其兼容机MS-DOS操作系统不可并发运行的实时多任务操作系统软件,它解决了MS-DOS系统的单任务性和不可重入性问题,在此操作系统支持下,用户可较方便地编写不用中文操作系统支持的实时多任务应用软件,由于摆脱了中文操作系统环境,因此用户可编大型的实时多任务应用软件。  相似文献   

2.
国际农业和生物科学中心电子出版物简介CAB文摘数据库CAB文摘数据库,已累积文献信息记录270万条,而且出版了如下一些电子版本形式出版物,现简介如下:1.联机系统全世界可通过如下联机系统检索CABI的出版物。①DIALOG;④CAN/OLE;②DIM...  相似文献   

3.
珠美海棠适宜培养基的选择研究   总被引:2,自引:0,他引:2  
用不同浓度的MS和IBA组合对珠美海棠试管苗茎段生根,萌芽及生长的影响情况进行了研究,结果表明:1/3MS和0.1mg/L的IBA有利于提高试管苗茎段的生根率,而1/2MS和0.25mg/L的IBA则可促进试管苗茎段芽梢的伸长:1/3MS+0.1mg/L IBA的组合是珠美海棠试管苗茎段,根、芽生长的适宜培养基,试管苗茎段的生根率和发芽率均为100%,单株生根数能达到5条,单根月平均生长量可达3m  相似文献   

4.
】通过试验建立了红帝王喜林芋的组培快繁技术,繁殖系数可达4~5倍,诱导培养基采用MS+BA10+IAA0.5,继代增殖以MS+BA2.0+IAA1.0,生根培养以1/2MS+IAA2.0为宜。  相似文献   

5.
对SCI、CAB等6种国外权威数据库以及中国农业文献数据库等2种国内中文数据库收录的8所部属重点农业院校的学术论文情况进行了统计分析,并深入分析了SCI和CAB的文献来源,讨论了发文量、被摘率、被引率等文献计量指标与各校学术地位的关系。  相似文献   

6.
地方猪种质资源数据库管理系统的建立   总被引:2,自引:0,他引:2  
利用汉化FOXBASE2.10版^+,在微机IBM-PC/XT上研制了地方猪种质资源数据库管理系统(PGRDMS)。系统功能包括文件管理、数据维护、查询检索、统计汇总、报表输出、图形绘制、科学运算及系统返回八大主模块。其中部分统计计算由BASIC程序实现,图形绘制调用了工具软件FOXGRAPH.经试运行表明,该系统的功能符合我国地方猪种质资源保存工作的需要,亦适用于一般猪场推广应用。  相似文献   

7.
佛手瓜下胚轴离体培养及再生植株   总被引:1,自引:0,他引:1  
对佛手瓜下胚轴再生植株、试管苗移栽及大田定植进行了试验,结果表明:在MS+IAA0.1mg/L+BA1.0mg/L+LH200mg/L培养基上容易形成下胚轴愈伤组织;愈伤组织分化芽的培养基为MS+IAA0.5mg/L+BA0.5mg/L,诱导分化率可达575%;顶芽和带腋芽茎段生根的培养基分别为MS+IAA1.0mg/L和1/2MS+IAA0.3mg/L,生根率分别为81.8%和83.3%;移栽培  相似文献   

8.
对四川产的4种贝母进行了核型研究,米贝母FritillariadavidiiFranch,核型公式为2n=2x=24=2m+2sm+10st+10t,染色体相对长度系数I.R.L=2L十2M2十7M1+2s核型为2B型,瓦布贝母FritillariawabuensisS.Y.TangetS.C.Yueh,核型公式为2n=2x=24=2m+2sm(SAT)+20t,染色体相对长度系数I.R.L=4L+6M2+12M1+2S,核型为2B型;浓度贝母FritillariamelleaS.Y.TangetS.C.Yueh,核型公式为2n=2x=24=2m+2sm+20t,染色体相对长度系数I·R·L=4L+8M2+10M1+2S,核型为3A型;槽鳞贝母FritillariaunibracteataHsiaoetK.Csiavar.sulcisquamosa(S.Y.TangetS.C.Yueh)HsiaoetS.C.Yu,核型公式为2n=2X=24=2X(SAT)+2sm+10t,染色体相对长度系数I.R.L=4L+4M2+14M1+2S,核型为3B型。该4种贝母核型较一致,但各种之间在次缢痕、随体、B染色体的数目?  相似文献   

9.
本试验利用猪的繁殖与呼吸综合征病毒美洲株和上海分离株 S H1 建立了 I F、 I P M A 和 Dot - E L I S A三种抗体检测方法, 对120 份随机抽样猪血清检测表明, 美洲株抗原组 I F A 的阳性率为30 .8 % 、 I P M A 的阳性率为30 % 、 Dot - E L I S A 的阳性率为32 .5 % , S H1 分离株抗原组 I F A 的阳性率为37 .5 % 、 I P M A 阳性率为37 .5 % 、 Dot - E L I S A 的阳性率为40 % 。进口 E L I S A 试剂盒的检测阳性率为26 .7 % 。  相似文献   

10.
对佛手瓜下胚轴再生植株、试管苗移栽及大田定植进行了试验,结果表明:在MS+IAA0.1mg/L+BA1.0mg/L+LH200mg/L培养基上容易形成下胚轴愈伤组织;愈伤组织分化芽的培养基为MS+IAA0.5mg/L+BA0.5mg/L,诱导分化率可达575%;顶芽和带腋芽茎段生根的培养基分别为MS+IAA1.0mg/L和12MS+IAA0.3mg/L,生根率分别为81.8%和83.3%;移栽培养土用土砂粪=321的灭菌土,幼苗成活率达75%;大田定值,平均单株结果88.43个,平均单果重240.23g.  相似文献   

11.
郑华  刘小红  吴常信  张福权 《安徽农业科学》2006,34(11):2406-2407,2409
利用农业部种猪质量监督检验测试中心(广州)的杜洛克公猪45头4 072条日称重记录,长白公猪49头4 545条日称重记录,大约克公猪50头4 614条日称重记录,进行了Logistic方程、Gompertz方程和Polynomials函数的生长曲线拟合。结果表明,不进行任何数据前处理只有0.8左右的拟合度(R2),按剔除法或Lowess方法数据处理后,R2可分别提高到0.9以上和0.99左右。不同品种公猪比较而言,杜洛克长势不如长白和大约克品种,其Gompertz方程得出的成熟体重(216.2 kg)比长白(234.7 kg)和大约克(235.7 kg)低,生长拐点(141.60 d,79.54 kg)比长白(145.01 d,86.34 kg)和大约克(146.90 d,86.71 kg)早。Logistic方程的趋势相同,但拐点更早。  相似文献   

12.
Two independently dated, high-resolution paleomagnetic records, one lacustrine and one archeological, record the passage across western North America of the same nondipole feature of the geomagnetic field during the time interval from A.D. 750 to 1450. Although these sequences indicate that correlation between paleomagnetic and archeomagnetic records is feasible under certain conditions, differences between the records underscore the difficulty of dating accurately an archeological site by correlation of a single archeomagnetic direction with a secular variation curve.  相似文献   

13.
中国花天牛亚科昆虫名录(续)   总被引:1,自引:0,他引:1  
列出了我国花天牛亚科昆虫种类名录。共计286种(含亚种),其中包括2个新种和6个中国新记录种,以及一批省级新记录。  相似文献   

14.
A multi-network system, comprising a neural classifier and two specialized neural predictors, was developed for prediction of milk yield from monthly records of Holstein dairy cattle. The classifier categorized records based on high- (≥9000 kg) and low-yields (<9000 kg) after which each set of classified records was fed to a network specialized, or semi-specialized, in prediction of yields for that category. Two differently trained classifiers were developed and compared; one trained with records covering the entire range of milk production, and the other with yields bordering on the cut-off point value of 9000 kg. Training files for the specialized predictors included records from only one yield category while those of the semi-specialized networks contained some records from the other category as well. The classifier trained with border cut-off point yields, had a considerably higher classification rate than the other (99.7% versus 92.3%). In the case of the specialized networks, the addition of records from the opposite category to the training files slightly degraded predictions for the records in the category of their specialization, but considerably improved those of the misclassified records. When misclassifications were marginal, however, the specialized networks produced the highest overall performance. Compared to a network trained with mixed records the combined classifier-predictor system improved the results, although it required an increase in development time.  相似文献   

15.
A multistate, cooperative program seeking to develop better methods for the effective and efficient gathering. storing, analyzing, and utilizing of mental patient records has made a comprehensive effort to protect the confidentiality and privacy of these psychiatric patient records. Administrative, technical, and legal safeguards have been implemented. The discussion of legal safeguards involves two areas: the protection of the system itself, located at Rockland State Hospital; and the specific legal environment of confidentiality and privacy of mental health records and information in the group of cooperating jurisdictions. On the whole, adequate legal and administrative protection can be afforded the confidentiality and privacy of an electronic data system in the mental health field, and access to the records can be restricted for the welfare of the patients. At the same time, access to aggregate data in the system can be allowed, under proper standards, for important research and planning purposes. The methods adopted by MSIS to preserve confidentiality and privacy by limiting access to such records could well prove an important model for the development of protective methods in other electronic data programs-not only those in psychiatry, but those in other fields where the data collected are sensitive and confidential.  相似文献   

16.
目的:探讨病案利用与医学科研产出的关系。方法:统计我院医务人员2002~2004年利用病案资料用于医学科研情况。结果:医务人员借阅病案用于科研用途比例为55.98%,其中医师借用病案比例及其科研产出比例明显高于护理和管理人员。结论:病案利用与科研产出关系密切,完善的病案管理可更好地为医学科研服务。  相似文献   

17.
对采集的蜻蜓标本进行鉴定,确定了4个东北地区新记录种和6个吉林省新记录种.其中东北地区新记录种为双横赤蜻Sympetrum rupturm Needham,高斑蜻Libellula basilinea McLachlan,绿金光伪蜻 Somatochlora dido Needham和长叶异痣蟌Ischnura.ele...  相似文献   

18.
Paleoatmospheric records of trace-gas concentrations recovered from ice cores provide important sources of information on many biogeochemical cycles involving carbon, nitrogen, and oxygen. Here, we present a 106,000-year record of atmospheric nitrous oxide (N2O) along with corresponding isotopic records spanning the last 30,000 years, which together suggest minimal changes in the ratio of marine to terrestrial N2O production. During the last glacial termination, both marine and oceanic N2O emissions increased by 40 +/- 8%. We speculate that our records do not support those hypotheses that invoke enhanced export production to explain low carbon dioxide values during glacial periods.  相似文献   

19.
In a recent decision, Commonwealth v. Kobrin, the Massachusetts Supreme Judicial Court ruled that a psychiatrist being investigated for possible Medicaid fraud did not have to turn over all of his notes concerning therapy sessions. The Court said that portions of the records reflecting feelings and impressions or the substance of the diagnosis could be withheld; however, information regarding drugs prescribed, electroshock therapy, or notes on the patient's condition and progress should be disclosed. Since increased access to medical records by insurers, investigators, hospital staff, and others has already eroded the right to privacy, the issues raised by this case are disturbing to psychiatrists who fear that wholesale disclosure of records may be mandated. They believe that such disclosure would adversely affect the doctor patient relationship and the psychotherapeutic process.  相似文献   

20.
用ASP/ADO实现的Web数据浏览分页显示   总被引:3,自引:0,他引:3  
随着数据库数据记录量的增大,要把数据记录完全下载到浏览器上需要很长时间。针对网站数据库的特点,提出了利用ASP/ADO的对象实现网站数据库查询及其分页显示的通用方法,并给出了分页显示的具体实例,讨论了其具体实现的过程。结果表明,该方法具有很好的扩展性和易于实现的特点。  相似文献   

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