On effective offloading services for resource-constrained mobile devices running heavier mobile internet applications

Rapid advances in wireless mobile network technologies and mobile handsets (MHs) facilitate ubiquitous infrastructure that can support a range of mobile services and applications in addition to conventional mobile Internet access. One recent trend is to effectively run desktop PC-oriented heavier applications on MHs. However, due to their miniature, portable size, MHs are resource-constrained and therefore, running these applications directly on an MH is not satisfactory given a user's expectations. To cope with this problem, this article proposes a novel offloading service that can seamlessly offload some of the tasks of a mobile application from an MH to nearby, resource-rich PCs (called surrogates). The system architecture and key components of the proposed offloading service are presented, prototyped, and evaluated. The results of experiments and simulations have demonstrated the effectiveness and efficiency of this offloading service for mobile applications.     

制造业跟踪系统解决方案剖析

NetLinx技术的发展，使得跟踪系统发生了划时代的飞跃，在制造业上的应用更加广泛。本文以一间显像管厂为例，详细介绍了跟踪系统在制造业上的应用。     

A role for Edman degradation in proteome studies

Advances in protein database design and the software used to access the sequence data has led to progress in using protein attributes such as amino acid composition and peptide masses to identify proteins separated by two-dimensional electrophoresis. However, Edman degradation remains the principal technique for protein identification and it presents a significant bottleneck in the progress towards rapid protein identification. Simple modifications to the sequencing hardware, which automate the delivery of protein spots into the sequencer, and parallel sequencing of the protein spots represent a significant advance in the use of Edman degradation to rapidly generate the powerful protein attribute, an N-terminal sequence tag.     

1,2,4-三唑酮-3衍生物的制备

研究了１，２，４－三唑酮－３（ＴＯ）衍生物的合成，结果表明ＴＯ在多种硝化条件下均可制得３－硝基－１，２，４－三唑酮－５，同时还合成了ＴＯ的二取代硝基苯衍生物。     

Effects of lacidipine on serum oxygen free radicals and fasting levels of insulin in patients with essential hypertension

Thirty patients with mild to moderate essential hypertension had received four weeks treatment with Lacidipine and serum lipid peroxide (LPO), superoxide dismutase (SOD) and insulin levels were measured before and after treatment. The results showed: (1) there were decreased in SOD activity and increased Lpo content the patients group (P < 0.01); (2) after treated with Lacidipine, the SOD acitvity increased and Lpo content decreased (P < 0.01); (3) Lacidipine had obvious antihypertensive effect with no significant changes in heart rate; (4) Lacidipine had no significant effects on insulin, blood glucose and lipids. The results suggest that lacidipine is a safe and effective antihypertensive agent and can improve the metabolic balances in free radical system.     

栉孔扇贝外套膜酸性和碱性磷酸酶电镜细胞化学研究

采用电镜细胞化学技术对栉孔贝（Chlamys farreri）外套膜中的酸性磷酸酶（ACP）和碱性磷酸酶（AKP）进行了定性定位研究。结果表明，外套膜的所有上皮细胞和结缔组织中部分务细胞呈ACP强阳性。上皮细胞中高电子密度阳性颗粒多为圆形，直径300－450mm；内多也呈ACP强阳性；微绒毛等呈弱阳性。血细胞中次级溶酶体内有数目和大小不同的ACP强阳性颗粒；内质网等内膜系统呈ACP弱阳性。外套膜的所有上皮细胞和血细胞均呈AKP强阳性。AKP阳性颗粒常沿着细胞膜分布；内质网等内膜系统呈AKP强阳性；上皮细胞中一种近圆形直径约250－420nm的颗粒也呈AKP强阳性。     

牙鲆淋巴囊肿病的PCR诊断方法研究

以中国养殖牙鲆 (Paralichthysolivaceus)淋巴囊肿病毒 (Lymphocystisdiseasevirus,LCDVcn)主要衣壳蛋白 (majorcapsidprotein ,MCP)基因的中间保守序列为目标基因 ,设计了一对特异性引物。该引物可扩增出 172bp的病毒DNA片段 ,其最小DNA检出量为 0 0 183ng。用PCR法从人工感染淋巴囊肿病毒 3天的牙鲆血、鳃、肝、脾、肠、胃及自然发病牙鲆的肿瘤中 ,分别检测到了LCDV的存在。本实验结果证明 ,PCR法对于早期检测LCDV是十分有效的。     

中日栉孔扇贝杂交子一代群体的遗传变异

采用不连续聚丙烯酰胺凝胶电泳技术，研究了中国栉孔扇贝和日本栉孔扇贝的两组杂交子代群体的14个位点24个等位基因。将它们各自的自交子一代作为亲本的参照组，对这四组子代群体进行了遗传变异分析，结果表明：四组群体具有相同的基因位点控制同工酶的表达，但各位点等位基因的频率有所不同。统计结果表明：杂交群体的遗传变异明显高于自交群体的遗传变异，四组群体的多态位点比例（P.99）分别为36.36%（CP中自交组）、30.77%（JP日自交组）、30.77%（JFCM日雌中雄杂交组）、30.77%（JM-CF日雄中雌杂交组），平均杂合度观测值（Ho）分别为0.1273（CP）、0.1055（JP)、0.1536（JFCM）、0.1727（JMCF)，各位点平均有效等位基因数（Ae）分别为0.7318（CP）、1.6718（JP）、1.6955(JFCM)、1.6927（JMCF）。杂交优势已初步显示出来。     

韶钢第三炼钢厂2#板坯连铸机漏钢原因分析

针对韶钢三炼钢板坯连铸机的漏钢原因从设备与工艺上进行分析,提出整改措施,对韶钢以后的板坯发展提供了经验.