爱因斯坦传奇

[1]一个多世纪前,艾伯特·爱因斯坦最初在瑞士伯尔尼专利局工作。他在瑞士联邦技术学院的入学考试中不及格,便接受了评估发明创造的工作,因为有稳定的收入。[2]然而在1905年,他的发明令任何在专利局登记的专利都相形见绌。从3月到9月,他发表了5篇论文,其中任何一篇都能荣获诺贝尔奖。它们使我们对宇宙的理解发生了革命性变化。那年他26岁。[3]今年被命名为爱因斯坦年,以纪念这位物理学家取得这伟大成就100周年。没有人在如此短暂的时间内创造出如此重要和富有创意的著作。他论证了宇宙并不像它看上去那样。     

如何开展家长培训

残障儿童的父母．是孩子一生最好的教育者，因为他们在孩子成长的过程中无私奉献，恪尽责任。对那些有残障儿童的家庭而言．“知识就是力量”这句话就是真理。这些家长需要掌握关于残障症状的特点、教育治疗方案和策略等信息，以提升日常生活质量。家长们也想知道什么样的服务最适合孩子．如何获得这些服务．如何定位家长角色以确保孩子的进步．[第一段]     

教你活得更好

这是一个十分感人的古老故事,许多年来,这个故事曾激励了无数的美国人从无到有,从贫穷到富有,因此被美国传媒一再颂扬为“能影响人的精神的经典之作”。     

我的QQ秀合影我做主

你有QQ秀照吗?你想拥有QQ秀照吗?其实,QQ秀照相分单人与双人两种,单人的QQ秀照是免费的,可是双人的QQ合影每次至少需要1Q币。如果我们没有Q币,该怎么办呢?不要急,下面偶就教你如何不用Q币也能照QQ秀双人合     

鳥类的干制

在生物学課堂教学中,直观教具的演示,是教学和教育工作中不可缺少的一部分。但生物教师却不能每一堂都能安排好必要的教具。这是由于教师不会自己制备教具的緣故。我从事各种直观教具,特别是对爬行类、鳥类与哺乳类动物的干制标本,已有十余年的經驗。本文將介紹应用40%的福尔馬林溶液注射于动物屍体的方法干制鳥类标本的经验。剥制法虽比干制法效果好一些,但时間需要较长;此外,剥制时所用的砒霜或砷酸钠这些毒物,往往有危險,而且这些毒物又不易买到。干制只需用福尔馬林,危險性少,而每个藥房也都可买到。干制不同于剝制,以后会干縮变小,但形狀颜色不变。在一定的保存条件(玻璃柜中)下和适当的保养(每一年撒上一层萘粉、六六六药剂等),干制标     

对医预科学校学习目标的建议

最近，美国医学院校协会（ＡＡＭＣ）发表了医学院校学习目标报告（ＭＳＯＰ）以协助各院校培养“能够满足社会需求”的新一代医生。两份ＭＳＯＰ报告总体上是鼓励开发医预科学校的学习目标，建立这种学习目标能确保这些未来的医学生较好地面对医学院校的课程，这些课程已经限定了他们在四年中所学的内容。那些不能在标准医学课程中扩展的教育要素能在本科生教育中予以提供，医预科教育也能包含这些内容，例如：通讯技能，写作和演讲；医学的心理社会方面内容，从伦理学到医患关系的延伸；统计学，包括介绍以证据为基础的医学的概论；信息学…     

FLOSSWorld全球调查结果显示服务器更多使用开源软件

FLOSSWorld调查的主体由5部分构成,包括:个人(Private sector)、政府(Government sector)、开源社区参与者(Open Source participants community)、高校管理者(Heigher Education Institutes——Administrators)、高校信息部门主管(Heigher Education Institute——ITManagers)     

Synthetic and biological studies on a cyclopolypeptide of plant origin

Objective: A natural cyclic peptide previously isolated from Citrus medica was synthesized by coupling oftetrapep-tide units Boc-Leu-Pro-Trp-Leu-Ome and Boc-Ile-Ala-Ala-Gly-Ome after proper deprotection at carboxyl and amino terminals followed by cyclization of linear octapeptide segment.Methods: Solution phase technique was adopted for the synthesis of cyclooctapeptide--sarcodactylamide.Required tetrapeptide units were prepared by coupling of Boc-protected dipeptides viz.Boc-Leu-Pro-OH and Boc-Ile-Ala-OH with respective dipeptide methyl esters Trp-Leu-Ome and Ala-Gly-Ome.Cyclization of linear octapeptide unit was done by p-nitrophenyl ester method.The structure of synthesized cyclopolypeptide was elucidated by FTIR,1H NMR,13C NMR,FABMS spectral data and elemental analysis.The newly synthesized peptide was evaluated for dif-ferent pharmacological activities including antimicrobial,anthelmintic and cytotoxic activities.Results: Synthesis of sarcodac-tylamide was accomplished with >78% yield utilizing dicyclohexylcarbodiimide (DCC) as coupling agent.Newly synthesized peptide possessed potent cytotoxic activity against Dalton's lymphoma ascites (DLA) and Ehrlich's ascites carcinoma (EAC) cell lines,in addition to moderate anthelmintic activity against earthworms Megascoplex konkanensis,Pontoscotex corethruses and Eudrilus sp.Moreover,cyclopolypeptide displayed good antimicrobial activity against pathogenic fungi Candida albicans and Gram-negative bacteria Pseudomonas aeruginosa,in comparison to standard drugs griseofulvin and ciprofloxacin.Conclusion: Solution phase technique employing DCC and triethylamine (TEA) as base proved to be effective for the synthesis of natural cyclooctapeptide.N-methyl morpholine (NMM) was found to be a better base for the cyclization of linear octapeptide unit in comparison to TEA and pyridine.     

Developmental links of very early phonological and language skills to second grade reading outcomes: strong to accuracy but only minor to fluency

The authors examined second grade reading accuracy and fluency and their associations via letter knowledge to phonological and language predictors assessed at 3.5, 4.5, and 5.5 years in children in the Jyv?skyl? Longitudinal Study of Dyslexia. Structural equation modeling showed that a developmentally highly stable factor (early phonological and language processing [EPLP]) behind key dyslexia predictors (i.e., phonological awareness, short-term memory, rapid naming, vocabulary, and pseudoword repetition) could already be identified at 3.5 years. EPLP was significantly associated with reading and spelling accuracy and by age with letter knowledge. However, EPLP had only a minor link with reading fluency, which was additionally explained by early letter knowledge. The results show that reading accuracy is well predicted by early phonological and language skills. Variation in fluent reading skills is not well explained by early skills, suggesting factors other than phonological core skills. Future research is suggested to explore the factors behind the development of fast and accurate decoding skills.     

关于猫、黄金、老头和金字塔的三个不同故事

两位考古专家一同前去参观金字塔,晚上便住在开罗市郊的一家小旅馆里,一个人留在房间里面写工作日记,另一个人就上街闲逛。他在路边发现有一个老妇人在卖一只黑色的工艺猫,要价1000元。他忽然发现这只猫的两只眼睛竟是两颗大