15.1命名下列各化合物。 (1)(C.)2SiCl2 (2)(CH3)3Si--Si(CH3)3 (3)(C)2(OC252(4)C2H)S(OH)2 (5)(C2H)2PH

一、农田灌溉用水对水质的要求 灌溉用水水质的好坏,主要是从水温,水的总矿化度及溶解盐类的成分对农作物和土 壤的影响来考虑的。有时,还要考虑水的pH值和水中有毒元素的含量对农作物和土壤的 影响。 灌溉水的温度应适宜

Partially Observable Markov Decision Processes Part II Additional reading: Anthony R. Cassandra. Exact and Approximate Algorithms for Partially Observable Markov Decision Processes. Ph. D. Thesis. Brown University Department of Computer Science, Providence, RI

1. Re-derive the equation for equilibrium swelling of a polyelectrolyte gel where the polymer chains contain a basic ionizable group that becomes positively charged with decreasing pH

Lecture 16: Intracellular drug delivery Last time nano- and micro-particle drug carriers Delivery to tissues from systemic circulation Today. Intracellular drug delivery Reading A.S. Hoffman et aL., Design of \smart polymers that can direct intracellular drug delivery, Polym. Adv. Technol. 13, 992-999(2002) Ph gradients and drug delivery: cancer res. 56, 1194(1996): adv drug deliv rev 25, 3 (1997); see asokan minireview

Problem Set 3 Prof. Gene Chang (For Ph. D students, due on Dec. 28th in the class, or TA's office. For M.A. students, due on Dec. 26th, in the class or TA's office. Late turn-in may result in a penalty in the grade) 1. Kland is a Robinson Crusoe type economy. Robinson, as the consumer and the owner of the firm, has the utility function U(x,) =aIn x+ BInI, where is leisure. Robinson's endowment

一、农田灌溉用水对水质的要求 灌溉用水水质的好坏,主要是从水温,水的总矿化度及溶解盐类的成分对农作物和土 壤的影响来考虑的。有时,还要考虑水的pH值和水中有毒元素的含量对农作物和土壤的 影响。 灌溉水的温度应适宜。在我国北方,以10—15℃;在南方的水稻区,以15—25℃,温 度过高或过高对作物生长都不利。我国北方地下水的温度,一般都偏低,可将水取出后引 入地表水池晾晒或用加长渠道等措施来提高水温。这样做还能使水中对作物生长不利的低 氧化物(特别是氧化物)发生氧化

Review of protein structure hierarchy Nonpolar, Hydrophobic R-grou Primary structure Glycin (Gly, G) Aa,A≌ alina (VaL V. Leucine(Lou, L) Isoleucine{,非 MAAAAAAGPEMVRGQVE 20 amino acids Phenylalanine(Ph,月

5.1引言 酶催化动力学主要是研究各种因素对酶促反应速度的影响、酶促反应的规律及反应历程。 影响酶促反应速度的因素包括[S]、[E、[P]、小pH和温度等本章重点讨论S]对酶促 反应速度的影响,并且介绍一些基本概念,和简单体系的动力学方程的推导

2.1酶作为生物催化剂的性质 2.1.1很高的催化效率 酶催化一般在常温常压和中性pH下进行,催化效率特别高。如碳酸酐酶(carbonic anhydrase)催化CO2水合反应来说,反应速率是10 molCO22/ mole,这比非酶催化要快 107倍。再如脲酶催化尿素的水解反应,比非酶催化要快1014倍。过氧化氢酶的催化效率 是无机催化剂Fe的1010倍