c******x
发帖数: 438 | 1 Competing processes for poly(aryl ether-ketone) synthesis, 3†.
Polymerization reactions of 1,3-bis(4-chlorobenzoyl)benzene and 1,3-bis(4-
fluorobenzoyl)benzene in N-methyl-2-pyrrolidinone
Atul Bhatnagar, Rajrathnam S. Mani, Brandon King, Dillip K. Mohanty
Macromolecular Chemistry and Physics
Volume 197, Issue 1, pages 315–328, January 1996
Thanks |
|
j*****n
发帖数: 26 | 2 对于这类型的环ketone化合物
为何环越小振动频率越大呢？
欢迎大家赐教 |
|
j*****n
发帖数: 26 | 3 Thank you :)
It is interesting to consider the hyperconjugation effect.
Actually, due to the lack of C-X bond at the carbond adjacent to the
carbonyl carbon, the main component of the hyperconjugation may come from
the C-H sigma bond to the anti-pi orbital of C=O. More hyperconjugation
should lead to weaker C=O bond. I guess, less constraint of the ring, could
benefit to the hypercunjugation.
Maybe this is the reason why the wavenumber decreases from 4-ring to 7-ring.
As expectation, acyclic ket... 阅读全帖 |
|
s***r
发帖数: 67 | 4 标题: A novel organocatalytic tool for the iminium activation of alpha,beta-
unsaturated ketones
作者: Bartoli, G; Melchiorre, P
来源出版物: SYNLETT 期: 12 页: 1759-1772 出版年: 2008
标题: Bronsted Acid-Thiourea Co-catalysis: Asymmetric Synthesis of Functionalized 1,4-Dihydropyridines from beta-Enamino Esters and alpha,beta-Unsaturated Aldehydes
作者: Yoshida, K; Inokuma, T; Takasu, K, et al.
来源出版物: SYNLETT 期: 12 页: 1865-1869 出版年: 2010
标题: Divergent stereoinduction mechanisms in urea-catalyzed additio... 阅读全帖 |
|
s**********r
发帖数: 67 | 5 1. Girardot, C., G. Lemercier, et al. (2007). "Novel ruthenium(II) and zinc(
II) complexes for two-photon absorption related applications." Dalton
Transactions(31): 3421-3426.
2. Lemercier, G., C. Martineau, et al. (2006). "Analogs of Michler's ketone
for two-photon absorption initiation of polymerization in the near infrared:
synthesis and photophysical properties." New Journal of Chemistry 30(11):
1606-1613.
3. Hayek, A., F. Bolze, et al. (2006). "Synthesis and characterization of
water-solubl... 阅读全帖 |
|
b******h
发帖数: 2715 | 6 谢谢大家这么关心和支持。 真的觉得还是买买提的大家伙靠得住。
对，还是摆事实讲道理的据理力争吧。
请大家评估一下：三年实验室工作大约20个新化合物（scifinder 上没有，实验室也没
有人合成）我是做total synthesis 的。最近半年做实验的同时也学着做计算，找到4
个transition states 说明了一个立体选择性的问题.另外明确了一个路易斯酸协同自
由基对alpha-beta unsaturated ketone 加成的机理。
还有就是我还做了其他大约20个化合物的合成，不过是组上的人发过paper的。
现在如果有人能给我Excited states的Gaussian 模板，让我把一个有机分子的自由基
的激发态能量算完，我想我又回答了一个问题，那么就很给我的工作加分。
总之谢谢大家，敬请关注下面局势的发展。 |
|
c******x
发帖数: 438 | 7 1. A New Constitutive Model for the Compressibility of Elastomers at Finite
Deformations
Jeffrey E. Bischoff, Ellen M. Arruda, and Karl Grosh
Rubber Chem. Technol. 74, 541 (2001)
2. The mechanical properties of poly(ether-ether-ketone) (PEEK) with
emphasis on the large compressive strain response
P.J. Raea, , , E.N. Browna and E.B. Orlerb
Polymer, Volume 48, Issue 2, 12 January 2007, Pages 598-615
3. The strain-rate and temperature dependence of the mechanical properties
of polyetherketone and p... 阅读全帖 |
|
|
p****g
发帖数: 70 | 9 PEEK polyether ether ketone那个苯上的氢 (PhCOPh)的PKA是多少有人知道么?
LDA是36, 苯上氢是43, |
|
c******x
发帖数: 438 | 10 1.Time-resolved SAXS, WAXS, and DSC study of the annealing of poly (aryl
ether ether ketone) (PEEK) from the galssy state
C. Fougnies etal, Macromolecules, 1997, 30*5) 1385-1391
2) Annealing effects on the crystallinity of polyetheretherketone (PEEK) and
its carbon fiber composite
Gunilla M. K. Ostberg etal
Journal of Applied Polymer Science
Volume 33, Issue 1, pages 29–39, January 1987
Thanks |
|
j***j
发帖数: 560 | 11 Chemistry--An Asian Journal, 6(3), 932-937; 2011
Rhodium-Catalyzed 1,4-Addition of Lithium 2-Furyltriolborates to Unsaturated
Ketones and Esters for Enantioselective Synthesis of γ-Oxo-Carboxylic
Acids By Oxidation of the Furyl Ring with Ozone (pages 932–937)
Dr. Xiao-Qiang Yu, Tomohiko Shirai, Dr. Yasunori Yamamoto and Prof. Dr
. Norio Miyaura
Thanks in advance.
l***[email protected] |
|
|
s****r
发帖数: 45 | 13 想找一篇 "中国化学快报"的以前的文章，有人能帮一下吗？ 谢谢！
Title: Synthesis of the analogs of triptolide: 7,8-deoxytriptolide, 7Î
±,8α-epoxytriptolide and related ketones
Chinese Chemical Letters [1001-8417] 2005， vol: 16 iss: 2 pg: 205-208. |
|
c***t
发帖数: 91 | 14 REDUCTION OF ALDEHYDES AND KETONES TO ALCOHOLS WITH HYDROUS ZIRCONIUM-OXIDE
AND 2-PROPANOL
DOI: 10.1246/cl.1985.731 |
|
r******3
发帖数: 2 | 15 招聘岗位：博士后 10人
岗位待遇：
1、年薪不少于22万元（含市财政给予的生活补助12万元/年）；特别优秀者可申请
校长卓越博士后，年薪可达30万元。
2、可作为负责人申请博士后科学基金、国家自然科学基金及省、市各级课题；
3、出站后留深圳工作可申请10万元科研启动经费；
4、符合市后备级人才条件的可以申请获得相应的住房补贴；
5、海外博士留深工作可以申请孔雀计划80-100万住房补贴，并有机会获得300-500
万科研启动经费。
岗位要求：
1、拥有有机化学专业博士学位，具有扎实的有机合成功底，接受过严格的专业训
练，有很好的实验操作能力和良好的独立思考、独立领导项目、独立解决问题的能力。
从事过天然产物全合成研究者将得到优先考虑。
2、热爱科学研究并有志于做出一流的科研成果，勤奋努力、服从安排、踏实好学。
3、具有良好的英语听说读写能力，能够独立撰写英文报告和论文。
课题组简介：
南方科技大学化学系张绪穆课题组成立于2015年7月，启动经费1000万，科研团队
目前拥有博士后5人， 秘书1人。课题组实验室目前位于南科... 阅读全帖 |
|
r******3
发帖数: 2 | 16 招聘岗位：博士后 10人
岗位待遇：
1、年薪不少于22万元（含市财政给予的生活补助12万元/年）；特别优秀者可申请
校长卓越博士后，年薪可达30万元。
2、可作为负责人申请博士后科学基金、国家自然科学基金及省、市各级课题；
3、出站后留深圳工作可申请10万元科研启动经费；
4、符合市后备级人才条件的可以申请获得相应的住房补贴；
5、海外博士留深工作可以申请孔雀计划80-100万住房补贴，并有机会获得300-500
万科研启动经费。
岗位要求：
1、拥有有机化学专业博士学位，具有扎实的有机合成功底，接受过严格的专业训
练，有很好的实验操作能力和良好的独立思考、独立领导项目、独立解决问题的能力。
从事过天然产物全合成研究者将得到优先考虑。
2、热爱科学研究并有志于做出一流的科研成果，勤奋努力、服从安排、踏实好学。
3、具有良好的英语听说读写能力，能够独立撰写英文报告和论文。
课题组简介：
南方科技大学化学系张绪穆课题组成立于2015年7月，启动经费1000万，科研团队
目前拥有博士后5人， 秘书1人。课题组实验室目前位于南科... 阅读全帖 |
|
e****d
发帖数: 16 | 17 i am working on polythers, such as poly(ether keton)s and poly(ether sulfone)s
through polycondensation. if you are working on the same field as me, let's
discuss something about it . thanks. |
|
m*******e
发帖数: 119 | 18 If possible, try toluene or MIBK (methyl isobutyl ketone) |
|
s******n
发帖数: 14 | 19 只要用可见光能引发就行吗？
我只说我知道的Norrish II type的(need H donor, e.g. EDTA)
thioxanthone and its derivatives (e.g. isopropyl thioxanthone)
xanthone and its derivatives
Michler's ketone
非要可见光引发，而紫外不引发我就不知道了 |
|
t***u
发帖数: 20182 | 20 我从来没做过啊。找个篇文献，应该可以找到更多的。hexane boiling point 69oC,
THF 66, 不知道
能不能行。
n-Alkanes (heptane, octane, decane, and dodecane), N,N1-dimethylformamide,
N,N1-dimethylacetamide, and methyl ethyl ketone used
as selective solvents for the block copolymers were of AnalaR grade.
The micellar solutions were prepared by using tetrahydrofuran un-
I less stated otherwise. The block copolymers were first dissolved in
small amounts of tetrahydrofuran to which the selective solvent was
I subsequently added. Tetrahyd |
|
|
z*****y
发帖数: 7 | 22 Thank you, cds. Would you please show me some references? Thanks in advance! |
|
n*******c
发帖数: 501 | 23 1) 24 yo male w/ type I DM was sent by EMS for AMS. EKG showed V-tech. What
is the first thing I let nurse do?
check blood glucose? could be hypoglycemia, prepare to shock him at the same
time.
2) 70 yo male in ER with AMS. BMP showed Ca 18.5.
rehydration and lasix, consider dialysis
3) 75 yo female sent by PMD w/ BUN/Cr 250/18.
ECG,check if widened QRS,ABG,BMP for k.
4) 34 yo HM w/ new onset DM w/ Glucose 2500.
urinalysis for ketone, rehydration and insulin drip
5) 38 yo AA male w/ DM,depressio |
|
p********3
发帖数: 5750 | 24 糖尿病的诊断是根据血糖来诊断（包括随机血糖和/或者空腹）， OGTT是测试糖耐量，
可以看血糖和胰岛功能（分泌Insulin 的量）。
临床上不靠测试Insulin Resistance来判断二型还是一型。 Age Of Onset， 有没有
Ketone， OGTT显示Insulin Level （这里面有很多讲究啦，比如End Stage Of Type2
， Insulin Level也很低， 长期高血糖导致胰岛抑制也可能Insulin Level很低， 但
是临床医生很容易就可以鉴别这些情况，不至于把二型误诊为一型。）。 还有就是成
人迟发性一型糖尿病（LADA， Latent Autoimmune Diebetes Of the Adults), 可以测
试GAD等抗体来鉴别，当然临床表现也有特殊，这需要临床医生根据临床表现判断来
Order这些测试。
总之，临床上不会测试Insulin Resistance。
glucose, |
|
d******u
发帖数: 10 | 25 上课的一个糖尿病例：
Blood glucose 378, A1c: 14 ( current )
Blood Glucose 140, A1C: 10 ( 2 years ago)
Weight 218lb (99kg)
Medications:
Metformin 1000mg, 1TAB BID Levemir (long acting insulin), 35units QD
怀疑noncompliance 导致血糖失控. 我是应该:
１。 告诉病人坚持吃药，打INSULIN, do nothing else
２。 增加INSULIN的剂量， 4 units every 3 days until FBG<180, then 2 units
every 3 days until in target range
３。 增加其他糖尿病口服药
４。１+２， １+２+３
Also Anion Gap 15mmol/dL, should I order lab for Ketone and pH to check if
he develops acidosis? By the way,... 阅读全帖 |
|
r*****1
发帖数: 805 | 26 My CCS protocol:
P.S.：多有重复，谨防遗漏，仅供参考。
Screening test: General—Lipid profile/ multi-vitamin; Elderly—DEXA scan&
Calcium& VitD/ Colonscopy or FOBT/ vaccination; F-- >18yo Pap smear; >50yo
Mammogram; reproductive age- folate; menopause- Lipid/DEXA/FOBT; M-- >50yo
PSA; sickle cell dz child-prophylaxis w penicillin till 5yo, CF-prophylaxis
w Abx
Prophylaxis: Pantoprazole, pneumatic compression stocking;
Acute abd w perforation: triple Abx- Gentamycin/ Ampicillin/
Metronidazole (口诀：阿扁举旗庆国庆)
E... 阅读全帖 |
|
z******8
发帖数: 844 | 27 ☆─────────────────────────────────────☆
rhcrc11 (Rebel) 于 (Thu May 15 00:13:42 2014, 美东) 提到:
Step3考场壮烈回来。第一天挺累人，最后一个block甚至做到有心无力状，看着题反应
不过来，导致来不及做完。非常没有信心能否通过。所以match之前先考Step3的童鞋，
需要考前调整生物钟，坚持锻炼，提高耐力。
MCQ没有资格说，CCS有一点小感受，拿出来分享下。大家请轻拍砖。
复习资料：
UW 52 online cases : 基础。最好复习早起找高手一起过一遍，尽快摸熟软件，进入
状态。第二遍找一位水平相近童鞋过一遍，不断总结protocol. 考前迅速做一遍，熟练
运用protocol.
UW 41 offline cases: 我当时和partner每个case仔细做一遍，虽然不像online有反馈
，但对练临床思维，补充protocol非常有帮助。最后考试与41 case有异曲同工之处，
遇到复杂case也不慌神。
CD 6 cases： 最后再熟悉下考试软件。与UW相近，但... 阅读全帖 |
|
t*****0
发帖数: 264 | 28 book gave 1 and 3, but I have some arguement on the 3 for 48.
I remember that type 1 is the insulin dependent which means pt don't secret
insulin at all. Since the question was talking about not enough insulin
secretion. I think it should be Type 2 and it won't cause ketone acidosis.
How you guy/gals think about the ans to 48? |
|
a******a
发帖数: 57 | 29 My guess is: mixed metabolic acidosis (anion gap) and metabolic alkalosis,
his anion gap is more than 30,high anion gap, in the setting of urine/blood
ketone levels high, and drinking history, metabolic acidosis likely exists;
he also had nause/vomitting,and volume contraction, this would lead to
contraction alkalosis, indicated by hypokalemia
Management for this pt:
admit to ICU or sub-acute ward with adequate nursing support
large bore peripheral IV
check CBC, LFT+PT/INR+bilirubin
abdominal ul... 阅读全帖 |
|
a******a
发帖数: 57 | 30 My guess is: mixed metabolic acidosis (anion gap) and metabolic alkalosis,
his anion gap is more than 30,high anion gap, in the setting of urine/blood
ketone levels high, and drinking history, metabolic acidosis likely exists;
he also had nause/vomitting,and volume contraction, this would lead to
contraction alkalosis, indicated by hypokalemia
Management for this pt:
admit to ICU or sub-acute ward with adequate nursing support
large bore peripheral IV
check CBC, LFT+PT/INR+bilirubin
abdominal ul... 阅读全帖 |
|
c*********r
发帖数: 16 | 31 【 以下文字转载自 Medicine 讨论区 】
发信人: cashewlover (whereisit), 信区: Medicine
标 题: 30多岁，尿潜血八年，右肾偏小，请问是肾病吗？
发信站: BBS 未名空间站 (Fri Feb 13 14:36:32 2015, 美东)
我现在30+，女，八年前得过数次UTI，后回国查出尿潜血1+，还有两次尿检尿蛋白1+。
看过中西医，中医认为是肾病早期，开了很多补肾的药，没敢吃；西医认为没有严重的
浮肿症状，就没什么，把我打发了。
回美后做了膀胱镜（应该不是尿道镜，感觉探头没进入那么深，一下就做完了），没有
结石，肾部B超也没结石。从那时起，所有尿检都有潜血1+，跟月经期没关系；某次潜
血达2+，还有少量leukocytes，另一次尿检还有trace ketone。。
13年上半年做妇科B超时，B超师发现我虽然上了厕所觉得排空了，膀胱里还有些尿，这
是尿滞留吗？13年下半年做体检B超，发现右肾9.5厘米，左肾10.5厘米，没有肾积水，
这边的医生认为正常。
这八年间仍偶有UTI，吃过几次抗生素都好了。喝水了就爱跑厕所，不能用力排尿，否... 阅读全帖 |
|
z*****n
发帖数: 444 | 32 FDA approves Eli Lilly's Trulicity to treat type 2 diabetes.
For Immediate Release
September 18, 2014
Release
The U.S. Food and Drug Administration today approved Trulicity (dulaglutide)
, a once-weekly subcutaneous injection to improve glycemic control (blood
sugar levels), along with diet and exercise, in adults with type 2 diabetes.
Type 2 diabetes affects about 26 million people and accounts for more than
90 percent of diabetes cases diagnosed in the United States. Over time, high
blood suga... 阅读全帖 |
|
w*******y
发帖数: 60932 | 33 I usually chime in here and there on supplement deals but this is my first
deal. For those of you that purchase your supplements in bulk, I found
some really cheap prices for some of the more rare products on Amazon. For
those that are less knowledgeable, I'll do a quick break down and will
answer any q's in the thread, but basically there is no supplement deal
posted on here that is going to get you better results for cheaper prices
than bulk supplement deals.
DMAA: The secret ingredient i... 阅读全帖 |
|
n**m
发帖数: 7872 | 34 测了一天了
fasting：77
三餐后一小时，最低的98，最高的126
ketone body：trace
吃的主食都是挺容易升糖的oatmeal，126的那次是饭后一小时没有动，其他两个是稍微
动了一下。
我咋感觉自己挺正常的，呵呵 |
|
