bluuebunny/crossref_metadata_2025_split huggingface dataset:
Preparation and characterization of core‐shell polystyrene/polyaniline/Pd composites and their catalytic properties for the reduction of 4‐nitrophenol
Authors: Sun Libo , Sun Xun , Zheng Yuhua , Lin Qingquan , Su Huijuan , Wang Yunxia , Qi Caixia 
Published: January 2017

ABSTRACTHerein, polystyrene/polyaniline/Pd (PS/PANI/Pd) core‐shell composite catalysts were prepared by a facile swelling‐diffusion‐interfacial polymerization method. PS microparticles were firstly prepared by dispersion polymerization and were swollen by aniline monomer without any surface modification. H2PdCl4 acid was used as palladium precursor. The
was adsorbed on the surface of aniline‐swollen PS microparticles because of the electrostatic attraction between
and anilinium positive ions protonated by H+, which was diffused from the aniline‐swollen PS microparticles. Then HCl solution was added to control the diffusion rate of anilinium positive ions and ammonium persulfate (APS) was used to polymerize the anilinium ions to get PANI shell. Due to the redox activity between PANI and Pd ions, Pd nanoparticles can be in situ formed on the surfaces of PS. Therefore, the core‐shell PS/PANI/Pd composite catalysts were obtained. The morphology and structure of the obtained composites was characterized by TEM, FT‐IR and EDX. Results showed that the products presented excellent catalytic properties for the reduction of 4‐nitrophenol (4‐NP) to 4‐aminophenol (4‐AP) in the presence of NaBH4 by virtue of the interaction between Pd nanoparticles and conducive PANI shell. The catalytic reaction obeyed the pseudo‐first‐order reaction equations and the reaction rate constants were also calculated in this article. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44812.
Effect of Mg doping in Sr2SiO4:Eu2+ nanophosphors for blue and white emission at near‐UV excitation
Authors: Dubey Sumit , Deshmukh Pratik , Satapathy S. , Singh M.K. , Gupta P.K. 
Published: January 2017

AbstractNanophosphors of (Sr0.98‐xMgxEu0.02)2SiO4 (x = 0, 0.18, 0.38, 0.58 and 0.78) were prepared through low temperature solution combustion method and their luminescence properties were studied. The emission peak for Eu2+ −doped Sr2SiO4 nanophosphor is observed at ~490 nm and ~553 nm corresponding to two Sr2+ sites Sr(I) and Sr(II) respectively for 395 nm excitation. However the addition of Mg2+ dopant in Sr2SiO4 leads to suppression of ~553 nm emission peak due to absence of energy levels of Sr (II) sites which results in a single broad emission at ~460 nm. It was shown that the emission peak blue shifted with increase in Mg concentration which may be attributed to change in crystal field environment around Sr(I) sites. Therefore, the (Mg0.78Sr0.20Eu0.02)2SiO4 nanophosphor can be used for blue emission and the Sr2SiO4:Eu0.042+ for green–yellow emission at 395 nm excitations. The Commission International de L'Eclairage (CIE) chromaticity coordinates for mixed powders of (Mg0.78Sr0.20Eu0.02)2SiO4 and Sr2SiO4:Eu0.042+ (in a 1:1 ratio) fall in the white region demonstrating the possible use of the mixture in white light generation using near‐UV excitation source.
Li2NaV2(PO4)3/Hard Carbon Nanocomposite Cathodes for High‐Performance Li‐ and Na‐Ion Batteries
Authors: Wang Zhaoyang , He Wen , Zhang Xudong , Yue Yuanzheng , Yang Guihua , Yi Xinli , Wang Yaoyao , Wang Jichao 
Published: January 2017

AbstractRhombohedral Li2NaV2(PO4)3 (R‐LNVP) is a promising cathode for lithium‐ion batteries (LIBs) and sodium‐ion batteries (SIBs), owing to its open framework with large ion‐transport tunnels and high electrochemical stability. In this work, a new type of nanocomposite was synthesized by using waste lignins as the structure template and the sources of Na and hard carbon, in which the rhombohedral Li2NaV2(PO4)3 (R‐LNVP) nanoparticles (ca. 15–30 nm) are homogeneously embedded in the hard carbon networks. The influences ofpapermaking black liquor (PBL) on the structure and electrochemical properties of the nanocomposites were investigated. The nanocomposite cathode exhibits high reversible capacities, that is, 137.2 mAh g−1 at 0.1 C in LIBs, but also 91.04 mAh g−1 at 0.2 C in SIBs. Moreover, the original fluid consumption rate of PBL reaches 2.36 L per kilogram of the nanocomposite through the synthesis process, which reduces the load of PBL to environment.
Diatoms as indicators of fine sediment stress
Authors: Jones J. Iwan , Douthwright Theresa A. , Arnold Amanda , Duerdoth Chas P. , Murphy John F. , Edwards Francois K. , Pretty James L. 
Published: January 2017

AbstractExcessive delivery of fine sediments to water bodies has a detrimental impact on the biotic elements used for water body status classification. Although diatoms are typically used to assess stress from eutrophication, as fine sediment has the potential to impact diatoms in many ways, it is not surprising that an index based on benthic diatom assemblages has been proposed: the relative abundance of motile species. This measure is based on the fact that many raphid diatom species are capable of migrating through deposited sediment to avoid negative impacts. However, the use of such an index has yet to be fully tested.Various data analysis techniques were used to explore how indices based on diatom assemblages (related to eutrophication and siltation), diatom species, the traits motility, and nutrient affinity responded to a gradient of percentage cover of fine sediment. Although diatom species showed marked variation in their affinity for percentage cover of fine sediment, the relationship between motility (both percent motile and the trait motility) and deposited fine sediment is not sufficiently strong to be used as a reliable indicator of fine sediment stress. We present an approach, which could potentially be used to develop a new index (diatom indicator of sediment conditions) on the basis of the response of diatoms to fine sediment, but caution that this index requires further development before use. Despite the hydromorphology having considerable potential to affect benthic diatoms, existing indices designed to assess eutrophication were robust to hydromorphological modification, reducing the possibility of false diagnosis of impacts.
Group 11 Metal Complexes with Unsymmetrical Bifunctional Ferrocene Ligands
Authors: Shi Yu‐Jun , Laguna Antonio , Villacampa M. Dolores , Gimeno M. Concepción 
Published: January 2017

AbstractInvited for this cover feature is the group of M. Concepción Gimeno from Instituto de Síntesis Química y Catálisis Homogénea, CSIC‐Universidad de Zaragoza, Spain. The image shows the great potential of the ferrocene molecule for custom‐made ligands, especially asymmetric disubstituted species bearing phosphine ligands and their corresponding group 11 metal complexes.
Amniotic Fluid Creatinine Values in Anaemic Pregnant Nigerian Women
Authors: Ogunbode O. , Ayeni O. , Adadevoh B. Kwaku 
Published: January 2017

Ogunbode, O., Ayeni, O. and Adadevoh, B. K. (Depts. of Obstetrics & Gynaecology, Preventive & Social Medicine, and Research & Training Programme in Reproductive Biomedicine, Dept. of Chemical Pathology, University College Hospital, Ibadan, Nigeria). Amniotic fluid creatinine values in anaemic pregnant Nigerian women.Int J Gynaecol Obstet 13: 206–208, 1975.Maternal serum and amniotic fluid creatinine values were determined in anaemic and non‐anaemic pregnant women. Serum maternal creatinine levels remained relatively unchanged throughout pregnancy complicated by anaemia, compared with the levels found in normal non‐anaemic pregnancies. The amniotic fluid creatinine values, however, increase with advancing gestation. In anaemic pregnancies the levels tended to be higher than in non‐anaemic pregnancies of comparable gestation but this difference was not statistically significant. Thus, creatinine concentration changes with increasing gestation can be used as an index of foetal maturity even in areas where anaemia is prevalent.
Plasma Protein Changes Induced by Acute Inflammation of the Fallopian Tubes
Authors: Jacobson L. , Laurell C.‐B. , Gennser G. , Marholev K. 
Published: January 2017

Jacobson, L., Laurell, C.‐B., Gennser, G. and Mar‐holev, K. (Depts, of Obstetrics & Gynaecology and of Clinical Chemistry, University of Lund, Malmö General Hospital, Malmö, Sweden). Plasma protein changes induced by acute inflammation of the Fallopian tubes.Int J Gynaecol Obstet 13: 249–256, 1975.In 72 patients, subjected to laparoscopy on the pre‐explorative, clinical diagnosis of acute salpingitis, the inflammatory plasma protein response was analysed and correlated with the visual findings. Of the “acute phase reactants” determined, antichymotrypsin, orosomucoid, and C‐reactive protein (CRP) provided diagnostic guidance significantly superior to that given by conventional clinical symptoms and signs in this disease. The antichymotrypsin plasma concentration showed the closest correlation with the degree of tubal inflammatory reaction as found at laparoscopy. Determination of these plasma proteins should be considered an important aid in the clinical diagnosis of acute salpingitis.
A Comparative Study of Electrocoagulation and Tubal Rings for Tubal Occlusion at Laparoscopy
Authors: Aranda Cecilio , Broutin Adolofo , Edelman David A. , Goldsmith Alfredo , Mangel Teodoro , Prada Carlos , Solano A. 
Published: January 2017

Aranda, C., Broutin, A., Edelman, D. A., Goldsmith, A., Mangel, T., Prada, C. and Solano, A. (Hospital México, San José, Costa Rica and International Fertility Research Program, Research Triangle Park, NC, USA). A Comparative study of electrocoagulation and tubal rings for tubal occlusion at laparoscopy.Int J Gynaecol Obstet 14: 411–415, 1976.The surgical and early postoperative complications and complaints associated with laparoscopic sterilization using electrocoagulation or tubal rings for tubal occlusion were evaluated in a comparative study. Procedures were randomly assigned to subjects (electrocoagulation to 151 subjects and tubal rings to 148 subjects). Difficulties in carrying out the sterilization procedures occurred more frequently when tubal rings were used (6.1%) than when electrocoagulation was used (2.0%). Rates of complications occurring at the time of surgery were similar for the two procedures. However, one patient in the electrocoagulation group had a bowel burn. Postoperative pelvic and abdominal pain were reported by a significantly higher proportion of the tubal ring cases (32.0%) than electrocoagulation cases (19.4%). It appears that although the incidence of surgical difficulties and pain may be somewhat more frequent with the tubal ring, the avoidance of such potentially serious complications as bowel burns may make female sterilization by the tubal ring method preferable.
Serum Gamma‐glutamyl‐transpeptidase in Hepatosis of Pregnancy and Pre‐eclampsia
Authors: Suonoja L. , Ylöstalo P. , Kihniö M. 
Published: January 2017

ABSTRACTThe series comprises 10 patients with hepatosis of pregnancy, 22 with pre‐eclampsia and 10 healthy pregnant patients, whose serum gamma‐GT levels at examinations during the third trimester of pregnancy were compared with the results of other liver function tests or enzymes. The gamma‐GT level was elevated in 50% in hepatosis of pregnancy and aminotransferases and AFOS in 80–90% at the same time. In pre‐eclampsia gamma‐GT was elevated in 2 cases (9%). Gamma‐GT determination has not appeared more sensitive than other tests in the diagnosis of cholestasis, hepatosis of pregnancy. On the other hand the results do not reduce its importance in the early diagnosis of liver cell damage and in the follow‐up of that pathologic process.
Basal Body Temperature Recordings in Spontaneous Abortion
Authors: Cohen Jean , Iffy Leslie , Keyser Herbert H. 
Published: January 2017

ABSTRACTBasal body temperature charts taken during the cycle of conception of pregnancies that have resulted in spontaneous first trimester abortion, suggested the presence of ovulation defect and inadequate function of the early corpus luteum. Particularly prevalent were “stepwise midcycle temperature rise” patterns, suggesting cause and effect correlation between disturbances of the endocrine phenomena that control ovulation and ensuing chromosome abnormalities of the products of conception. The latter phenomenon was found relatively frequently among infertility clinic patients; a group known to be predisposed towards various abnormalities of pregnancy. The authors consider this BBT pattern as probably conducive to early abortion and fetal developmental and chromosome anomalies.
Carcinoma of the Cervix Uteri in Ibadan: Coital Characteristics
Authors: Adelusi B. 
Published: January 2017

ABSTRACTCarcinoma of the cervix uteri has been found to be the most common female malignancy in Ibadan, excluding the reticuloendothelial tumors. In a study to investigate associated etiological factors in this environment, it was demonstrated that certain coital characteristics of women with cervical cancer can be identified. These were a common denominator which could explain the frequency of the disease among some categories of patients who engage in early sexual practice, have intercourse frequently and with multiple partners, and have many pregnancies. Support was given to the view that a sexually transmitted factor might be important in the cause of carcinoma of the cervix.
Sociocultural Factors Associated with Cervical Cancer in Bendel State, Nigeria
Authors: Emovon A. C. 
Published: January 2017

ABSTRACTThis is an analysis of data on 50 patients treated for cervical cancer at the University of Benin Teaching Hospital, Benin City, Nigeria, from March 1973 to December 1976. The data were collected through a questionnaire designed to obtain information concerning various sociocultural factors about cervical cancer patients. Study results showed that 80% of the patients had no formal education and came from lower socioeconomic groups. Most of the patients (88%) married before the age of 20, and 76% reported frequent coitus. The patients were high‐parity women; but high parity is also typical of the general female population. Since the culture demands that the male population be circumcised, a low incidence of cervical cancer might be expected. The occurrence of 65 cases of cancer of the cervix out of a total of 15 049 hospital gynecologic cases examined during the study period is possible evidence of such a low incidence in this population.
Laparoscopic Sterilization After “Spontaneous” Abortion
Authors: Quan Angel , de Badia Delfina , Edelman David A. , Goldsmith Alfredo 
Published: January 2017

ABSTRACTOne hundred eighty‐nine patients were evaluated to assess the safety of laparoscopic sterilization after completion of a “spontaneous” abortion by curettage. Some of the “spontaneous” abortions had probably been illegally initiated outside the hospital and were septic. The laparoscopic sterilization procedures used tubal rings to achieve tubal occlusion. They were performed 4 to 48 hours after completion of the abortion. Patients were discharged from the hospital on the day the procedure was performed. Surgical difficulties and complications associated with the laparoscopy were infrequent. Undergoing a curettage prior to sterilization with tubal rings by laparoscopy did not appear to result in increased rates of complications.
Difficult Obstetric Vesicovaginal Fistula: A Report on 12 Cases
Authors: Stephen G. M. 
Published: January 2017

ABSTRACTIn each of the 12 cases presented, the fistula was the result of obstructed labor. Common features to each case were: (a) a large retropubic defect involving the anterior vaginal wall, bladder and urethra, (b) total or partial urethral rupture, and (c) marked vaginal wall scarring with vaginal stenosis. Primary repair was performed by the vaginal route, and two patients were cured by the first operation. Six patients required two or more vaginal procedures for successful closure. Following repeated failure of vaginal closure, two patients had a successful transvesical closure and two required ureterosigmoidostomy.
Study of “Spontaneous” Abortion in Thailand
Authors: Koetsawang Suporn , Saha Anjali , Pachauri Saroj 
Published: January 2017

ABSTRACTThis analysis includes data on 3 530 patients with septic or incomplete, inevitable or threatened abortions who were treated at the Siriraj Hospital in Bangkok between January 1972 and December 1973. Data on the patients' socio‐demographic characteristics; their reproductive, abortion, and medical histories; their pre‐ and postabortion contraceptive acceptance; and a clinical profile of their abortion treatment, including procedure time, length of hospitalization, and immediate and delayed postoperative complications are analyzed.
Estrogens in Food: The Almond Mystery
Authors: Clemetson C. A. B. , De Carlo S. J. , Burney G. A. , Patel T. J. , Kozhiashvili N. , Taylor R. A. 
Published: January 2017

ABSTRACTStudies were made of 36 different nuts, grains, fruits and vegetables commonly used as human foods; each of these was fed to a group of ovariectomized rats for 10 days as a sole diet. The estrogenic activities of the foods were estimated by comparing the uterine weights, uterine fluid volumes and the vaginal cornification indices of each group of rats with those of groups fed other foods. Almonds, cashew nuts, peanuts, oats, corn, wheat and apples all showed estrogenic activity. The original sample of almonds showed the greatest estrogenic activity (p<0.01) which was confirmed by repetition of the experiment (p<0.01), but subsequent studies of other samples of almonds showed no estrogenic activity. Possible reasons for the disparity of the results with different lots of almonds are discussed.
Intrapartum Maternal and Fetal Monitoring: The Obstetric Intensive Care Unit
Authors: Young Bruce K. , Weinstein Howard N. , Katz Miriam 
Published: January 2017

ABSTRACTThe Obstetric Intensive Care Unit (OBICU) at Bellevue Hospital in New York City has adapted intensive care and coronary care models to the care of patients in labor. During the past 3 years, 519 of the most serious of 2 250 high‐risk obstetric patients treated at the hospital were monitored in the OBICU. There were two maternal and six perinatal deaths. The perinatal mortality rate of the very high risk population of the OBICU was 11.6/1 000, compared to 14.7/1 000 for all deliveries performed at the hospital. Our findings indicate that the OBICU system provides the ideal mechanism for the rapid and continuous control of symptoms in very high risk gravidas which is essential for stabilizing the patient, both for prompt delivery and for optimal maternal and fetal survival.
Rectovaginal Fistula: Management by Intravenous Feeding and Surgical Repair
Authors: Piraka Hadi , Parsa Mohamad H. , Jahanmiri Fatemeh 
Published: January 2017

ABSTRACTTwo patients, each with a large rectovaginal fistula, were managed successfully by intravenous feeding and surgical repair of their fistulae. Intravenous feeding eliminated the need for food from the gastrointestinal tract, thus minimizing the fecal flow. Both fistulae healed following surgical repair. Neither patient required a diverting colostomy.
A Comparative Study of the Tubal Ring Applied via Minilaparotomy and Laparoscopy in Postabortion Cases
Authors: Bhatt R. V. , Pachauri Saroj , Pathak Nisha D. , John Elizabeth 
Published: January 2017

ABSTRACTSterilization with tubal rings applied via minilaparotomy or laparoscopy was performed on 300 randomly selected postabortion subjects to evaluate the safety and effectivness of the two surgical methods. One hundred and forty‐nine procedures were performed by minilaparotomy and 151 by laparoscopy. Gas leakage due to equipment problems was the most common technical difficulty during laparoscopy, and difficulty in exteriorizing the tubes was the most common surgical difficulty. Women undergoing laparoscopy experienced significantly less pain during surgery and had significantly lower rates of immediate and early postoperative complications than those women undergoing minilaparotomy. The rates of gynecologic abnormalities at six and 12 months were similar for both procedures. At this writing, no pregnancies have been reported among the study subjects. The results of our study indicate that laparoscopy is superior to minilaparotomy when it is performed in a controlled hospital situation.
Early Identification, Differentiation and Treatment of Ovarian Neoplasia
Authors: Ranney Brooks , Ahmad M. I. 
Published: January 2017

ABSTRACTAmong 3205 patients who needed major gynecologic operations, only 250 (7.8%) had significant ovarian cysts or tumors (170 benign, 38 “low malignant potential,” 42 gross cancers). Contrary to prior reports, this study shows that most patients with ovarian neoplasia had had some symptoms (duration ranged from two weeks to ten years), or a palpable adnexal mass or both. Associated symptoms have been itemized in categories. Procrastination by patients, after occurrence of the first symptoms, resulted in the growth of later‐stage cancers and lower survival rates. It may be inferred from age‐incidence graphs that some benign cystadenomas may be present in ovaries for long intervals of time and then may become malignant. The importance of (a) careful recording of histories, (b) periodic pelvic examinations, (c) the use of preoperative methods of differential diagnosis and (d) the differentiation between gross tumor characteristics during operations are discussed. Earlier diagnosis and treatment of ovarian neoplasia are possible and will yield better long‐term results.
Ectopic Pregnancy: Diagnostic Dilemma and Delay
Authors: Hazekamp Johan T. 
Published: January 2017

ABSTRACTA retrospective analysis of 111 consecutive ectopic pregnancies was done regarding diagnostic difficulties and delay. Absence of amenorrhea before onset of symptoms was frequent (44.1%), as was a negative two‐minute slide pregnancy test (50.0%). The main factors causing diagnostic delay were the use of therapeutic drug trials and misdiagnosis at curettage. Diagnostic delay can be reduced by early use of more sensitive pregnancy tests in patients predisposed to ectopic pregnancy, more critical use of drug trial therapy in patients with gynecologic diagnostic problems, early resort to laparoscopy and rapid pathologic examination of tissue obtained from curettage done in suspected cases of spontaneous abortion or menorrhagia to detect decidual changes or Arias‐Stella phenomenon.
Clinical Evaluation of Fetal Movements
Authors: Birger Moshe , Homburg Roy , Insler Vaclav 
Published: January 2017

ABSTRACTFetal movement was examined in 200 pregnancies to establish normal patterns, influencing factors, possible clinical value and practical application. The mean number of movements per hour was 26 in hospitalized and 40 in ambulatory patients. These values remained fairly steady throughout pregnancy except for a significant decrease in the week preceding labor. Individual variations were large. The number of movements was uninfluenced by parity and fetal sex but was lower for small‐for‐gestational‐age babies, in mothers suffering from both hypertension and diabetes and in mothers treated with diazepam. Fetal movement count may be used as a parameter of fetal well‐being.
Mortality Risk Associated with Female Sterilization
Authors: Aubert Josep M. , Lubell Ira , Schima Marilyn 
Published: January 2017

ABSTRACTThe mortality risk associated with female sterilization in an analysis of 255 812 procedures performed in developing countries from 1973 to 1979 is reviewed. Fifteen sterilization‐related deaths were reported during this period. The overall mortality was 5.86/100 000 procedures. The most common cause of death was the result of anesthetic complications, with infection in second place. The risk of death by procedure was higher with culdoscopy than with minilaparotomy or laparoscopy. The authors believe that low mortality figures are realistic and can be achieved in developing countries when experienced surgical teams are provided with adequate facilities, observe strict medical standards, utilize minilaparotomy and laparoscopy and avoid general and spinal anesthesia.