2,2′-Biphosphinines and 2,2′-Bipyridines in Homoleptic Dianionic Group 4 Complexes and Neutral 2,2′-Biphosphinine Group 6 d6 Metal Complexes: Octahedral versus Trigonal-Prismatic Geometries

2007 ◽  
Vol 13 (10) ◽  
pp. 2953-2965 ◽  
Author(s):  
Hervé Lesnard ◽  
Thibault Cantat ◽  
Pascal Le Floch ◽  
Isabelle Demachy ◽  
Yves Jean
Keyword(s):  
Metal Complexes ◽  
Group 4 ◽  
Group 6 ◽  
Trigonal Prismatic

scholarly journals Association between serum oestradiol level on the hCG administration day and neonatal birthweight after IVF-ET among 3659 singleton live births

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yu Liu ◽  
Jing Li ◽  
Wanyu Zhang ◽  
Yihong Guo
Keyword(s):  
Birth Weight ◽  
Ovarian Stimulation ◽  
Group 4 ◽  
Group 6 ◽  
Group 3 ◽  
Group 5 ◽  
Group 2 ◽  
The Impact ◽  
Ivf Et ◽  
Group 1

AbstractOestradiol, an important hormone in follicular development and endometrial receptivity, is closely related to clinical outcomes of fresh in vitro fertilization-embryo transfer (IVF-ET) cycles. A supraphysiologic E2 level is inevitable during controlled ovarian hyper-stimulation (COH), and its effect on the outcome of IVF-ET is controversial. The aim of this retrospective study is to evaluate the association between elevated serum oestradiol (E2) levels on the day of human chorionic gonadotrophin (hCG) administration and neonatal birthweight after IVF-ET cycles. The data of 3659 infertile patients with fresh IVF-ET cycles were analysed retrospectively between August 2009 and February 2017 in First Hospital of Zhengzhou University. Patients were categorized by serum E2 levels on the day of hCG administration into six groups: group 1 (serum E2 levels ≤ 1000 pg/mL, n = 230), group 2 (serum E2 levels between 1001 and 2000 pg/mL, n = 524), group 3 (serum E2 levels between 2001 and 3000 pg/mL, n = 783), group 4 (serum E2 levels between 3001 and 4000 pg/mL, n = 721), group 5 (serum E2 levels between 4001 and 5000 pg/mL, n = 548 ), and group 6 (serum E2 levels > 5000 pg/mL, n = 852). Univariate linear regression was used to evaluate the independent correlation between each factor and outcome index. Multiple logistic regression was used to adjust for confounding factors. The LBW rates were as follows: 3.0% (group 1), 2.9% (group 2), 1.9% (group 3), 2.9% (group 4), 2.9% (group 5), and 2.0% (group 6) (P = 0.629), respectively. There were no statistically significant differences in the incidences of neonatal LBW among the six groups. We did not detect an association between peak serum E2 level during ovarian stimulation and neonatal birthweight after IVF-ET. The results of this retrospective cohort study showed that serum E2 peak levels during ovarian stimulation were not associated with birth weight during IVF cycles. In addition, no association was found between higher E2 levels and increased LBW risk. Our observations suggest that the hyper-oestrogenic milieu during COS does not seem to have adverse effects on the birthweight of offspring after IVF. Although this study provides some reference, the obstetric-related factors were not included due to historical reasons. The impact of the high estrogen environment during COS on the birth weight of IVF offspring still needs future research.

NSSN-Type Group 4 Metal Complexes in the Ring-Opening Polymerization of l-Lactide

2021 ◽  
Author(s):  
Salvatore Impemba ◽  
Giuseppina Roviello ◽  
Stefano Milione ◽  
Carmine Capacchione
Keyword(s):  
Metal Complexes ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Type Group ◽  
Group 4 ◽  
Group 4 Metal

Tridentate [N,N,O] Schiff-base group 4 metal complexes: Synthesis, structural characterization and reactivity in olefin polymerization

2006 ◽  
Vol 258 (1-2) ◽  
pp. 275-283 ◽  
Author(s):  
Gino Paolucci ◽  
Alessandra Zanella ◽  
Laura Sperni ◽  
Valerio Bertolasi ◽  
Mina Mazzeo ◽  
...  
Keyword(s):  
Schiff Base ◽  
Metal Complexes ◽  
Structural Characterization ◽  
Olefin Polymerization ◽  
Group 4 ◽  
Group 4 Metal ◽  
Base Group

scholarly journals Allylsilylcyclopentadienyl Group 4 metal complexes: synthesis, structure and reactivity

2003 ◽  
Vol 345 ◽  
pp. 15-26 ◽  
Author(s):  
Jesús Cano ◽  
Pilar Gómez-Sal ◽  
Georg Heinz ◽  
Gema Martı́nez ◽  
Pascual Royo
Keyword(s):  
Metal Complexes ◽  
Group 4 ◽  
Group 4 Metal

EFFECT OF TREATMENT WITH STREPTOKINASE AND HEPARIN ON FIBRINOGEN, FIBRIN AND RELATED PROTEINS IN ACUIE MYOCARDIAL INFARCTION (/ME) PATIENTS

1987 ◽  
Author(s):  
V Vila ◽  
E Reganon ◽  
J Aznar ◽  
V Lacueva ◽  
M Ruano
Keyword(s):  
Degradation Products ◽  
Heparin Therapy ◽  
Heparin Group ◽  
Normal Value ◽  
Group 4 ◽  
Group 6 ◽  
Group 3 ◽  
Group 5 ◽  
Group 2 ◽  
Group 1

The properties of fibrinogen and fibrin, the levels of fibrincpeptide A (FPA) and fibrin(ogen) degradation products (FDP) were studied in 34 patients with AMI who were undergoing thrombolytic and heparin therapy. They were classified into 6 groups accordingto their stage of treatment: group 1, before intravenous administration of 800.000 U streptokinase over 30 min; group 2, after a<Mnistraticn of SK but before adninistraticn of heparin; group 3, during 24 h ofthe 5 ng/h heparin continuous infusion; group 4, during 48-72 h of the 16.6 ng/h heparin continuous infhsion; group 5, after 1 week of administration of SK and with a bolus inyection of 50 rg heparin every 4 h; group 6, patients who were undergoing only heparin treatment. The Fg 1/ Fg II ratio varies during treatment with SK and heparin. In group 1 a sligjnt increase (2.5) is observed. Group 2 shows a significantdecrease (0.6) as a result of fibrinolysis. In group3 the ratio reaches normal value (1.8) while in the fourth group it is twice the normal value (4). The value for group 5 is nearly normal (2.1), and in group 6 it reaches values similar to those obtained in group 4, which implies that the rise in the Fgl/Fgll ratio is not a result of fibrinolytic treatment. TheFPA level shows and increase in patients with AMI (group 1,126 ng/ml). When SK treatment is applied (group 2), FPA decreases to 52 ng/ml. Later treatment with heparin (group-3, 82; group-4, 44 and group-5, 81ng/ml) does not neutralize thrcmbinic activity. Patients treated only with heparin (group 6) show an FPAvalue of 19 ng/ml, which is lower than in the other groups. All of this indicates that thrombin is activated after fibrinolytic treatment. FDP values show asignificant increase in the six groups (1, 53; 2, 430; 3, 128; 4, 270; 5, 139 and 6, 141 ug/ml), which indicates that during treatment with heparin the fibrinolytic activity persists. he formation of highly cross-linked fibrin is altered in groups 1,2,3 and 4,as a consequence of circulating FDP effect and fibrincgeno- lysis.The permeability of the fibrin clotdecreases in groups 1 (0.42), 2 (1.3), 4 (1.1) and 5(0.5 ml/s/ng) and increases in group 2 (23.2 ml/s/nig) with respect to the normal plasma value (3.2 ml/s/nrg). The decrease in permeability must be related to the existence of hypercoagulability resistant to heparinization. FPA values, tine Fgl/Fgll ratio, andfibrin permeability can be used to evaluate the degree of thrcmbin activity during thrombolytic treatmentinAMI.

Species groups of Oriental Ptecticus Loew including descriptions of ten new species with a revised identification key to the Oriental species (Diptera: Stratiomyidae)

Zootaxa ◽  
2009 ◽  
Vol 2034 (1) ◽  
pp. 1-30 ◽  
Author(s):  
RUDOLF ROZKOŠNÝ ◽  
MARTIN HAUSER
Keyword(s):  
New Species ◽  
Southern China ◽  
The Philippines ◽  
Junior Synonym ◽  
Identification Key ◽  
Group 4 ◽  
Group 6 ◽  
Group 3 ◽  
Species Groups ◽  
Group 1

The species of Oriental Ptecticus are reviewed and ten species are described: P. artocarpophilus sp. nov. from the Philippines; P. bannapensis sp. nov., P. kubani sp. nov. and P. subaurifer sp. nov. from Laos; P. elegans sp. nov. and P. semimetallicus sp. nov. from Nepal; P. fukienensis sp. nov. from southern China; P. indicus sp. nov. from India; and P. infuscatus sp. nov. and P. sarawakensis sp. nov. from Borneo. Five new synonymies are proposed: P. minimus Rozkošný & Kovac, 1997 is a junior synononym of P. shirakii Nagatomi, 1975; P okinawae James, 1950 is a junior synonym of P. aurifer (Walker, 1854); P. tenebrifer (Walker, 1849) is a junior synonym of P. japonicus (Thunberg, 1789); P. wulpii Brunetti, 1907 is a junior synonym of P. melanurus (Walker, 1848), and P. zhejiangensis D. Yang & C. Yang, 1995 is a junior synonym of P. kerteszi de Meijere, 1924. Eight species groups for the Oriental Ptecticus species are defined: aurifer group (6 spp.), australis group (9 spp.), cingulatus group (11 spp.), histrio group (7 spp.), longipennis group (6 spp.), shirakii group (1 sp.), japonicus group (4 spp.), tricolor group (3 spp.) and 5 species remain unplaced. A new identification key to the Oriental Ptecticus species, including references to the published figures of distinguishing characters and basic distributional data, is given.

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