bluuebunny/crossref_metadata_2025 huggingface dataset:
Peningkatan Ketebalan Serat Elastin Dinding Vagina pada Prolapsus Organ Pelvis Anterior
Authors: Zaki Achmad , Mardian K Eighty , Mustokoweni Sjahjenny
Published: August 2017

Tujuan: Mengukur ketebalan serat elastin pada dinding vagina penderita POP anterior dan menganalisis korelasi antara ketebalan serat elastin dengan derajat POP anterior.Bahan dan Metode: Penelitian ini merupakan penelitian analitik observasional secara cross sectional yang dilakukan pada 28 blok paraffin dinding vagina dari penderita POP anterior yang telah dilakukan operasi di RSUD dr. Soetomo Surabaya. Dibagi menjadi 4 kelompok: derajat 0/I, II, III dan IV dengan masing-masing (n=7). Dilakukan pewarnaan imunohistokimia dengan antibodi elastin dilanjutkan pengukuran ketebalan serat elastin menggunakan mikroskop dengan perangkat lunak Leica Application Suite (LAS).Hasil: Didapatkan perbedaan bermakna rerata ketebalan serat elastin kelompok penderita POP anterior derajat 0/I, II, III dan IV yaitu masing-masing sebesar 0,81 + 0,14 µm; 1,63 + 0,19 µm; 2,47 + 0,26µm dan 3,19 + 0,36 µm (p<0,0001). Berdasarkan hasil uji statistik korelasi pearson didapatkan koefisien korelasi r = 0,965 (P<0,0001).Simpulan: Ketebalan serat elastin pada dinding vagina bertambah dengan meningkatnya derajat POP anterior. Peningkatan ketebalan serat elastin merupakan akibat proses remodeling matriks ekstraseluler pada dinding vagina penderita POP anterior.
Profile of patients with post partum hemorrhage in Dr. Soetomo Hospital, Surabaya, January 2011 - December 2013
Authors: Azyati Mazaya , Akbar Aldika , Sudarno Sudarno
Published: August 2017

Objectives: To recognize profile of patients with post partum haemorrhage in Dr. Soetomo Hospital, Surabaya, from January 2011 to December 2013.Materials and Methods: This was a descriptive study using secondary data from medical records of patients with postpartum hemorrhage at Dr. Soetomo Hospital in January 2011 - December 2013. Age, parity, origin, amount of hemoglobin, cause of postpartum hemorrhage, mode of delivery, and transfusion data patients were all recorded.Results: Result of this study were patient’s age, parity, origin, hemoglobin, cause of postpartum haemorrhage, mode of delivery, and transfusion data. From 202 cases, 131 patients (64.85%) were 20 – 35 years old, 134 patients (66.34%) were multipara, 84 patients (41.58%) were from private practice midwife, 70 patients’ (34.65%) hemoglobin were <8 gr%, 63 patients (31.19%) post partum haemorrhage caused by retained placenta, 164 patients (81.20%) labored with spontaneous way, and 131 patients (64.85%) did not receive transfusion.Conclusions: Most of the patients with postpartum hemorrhage were 20-35 years, multiparas, from private practice midwives, came with haemoglobin level <8 gr%, caused by retained placenta, delivered with spontaneous way, and did not receive transfusion.
Effect of percutaneous nephrostomy in late stage cervical cancer’s survival with impaired renal function
Authors: Rasjidi Imam , Gunawan Ali , Susanto Christine
Published: August 2017

Objective: explore the association between percutaneous nephrostomy and survival of patients with advanced cervical cancer accompanied by renal impairment.Materials and Methods: Retrospective cohort, with 70 samples taken with consecutive sampling. The population was all advanced cervical cancer patients with impaired renal function (IIIB, IVA, IVB, recurrent) treated in RSUPNCM since January 1, 1998. Sample size was each 19 patients for percutaneous nephrostomy and conservative groups. Survival was measured from medical records of advanced cervical cancer patients with impaired renal function who were treated at RSUPNCM since January 1, 1998 until December 31, 2003. Percutaneous nephrostomy was measured from medical records of advanced cervical cancer patients with impaired renal function treated at RSUPNCM since 1 January 1998 until December 31, 2003.Results: Median survival of 44 respondents who underwent percutaneous nephrostomy was 203 days with probability of survival at 6 months 56.9% and 12 months by 31.1%. Median survival of 26 respondents who did not undergo percutaneous nephrostomy was 75 days with a chance of survival at 6 months 26.6% and 12 months 10%. There were significant differences between patients undergoing percutaneous nephrostomy and those without (p = 0.0470, α = 0.05).Conclusion: There was significant association between percutaneous nephrostomy and survival (p = 0.0470, α = 0.05).
Effect of oocyte vitrification before and after in vitro maturation towards Bcl-2, Bax and Bcl-2/Bax ratio expression
Authors: Faizah Zakiyatul , Aswin Haryanto , Lunardhi Hamdani
Published: August 2017

Objectives: to compare the expression of Bcl-2, Bax and Bcl-2/Bax ratio in cumulus cell and oocyte between vitrified oocyte pre and post in vitro maturation.Materials and Methods: Maturation was operated in medium TC 100 µl for 24 hours. Vitrification begins with washing oocyte in PBS basic medium supplemented of 20% serum for 1-2 minutes, followed by equilibration medium PBS + 20% serum + 10% ethylene glycol for 10-14 minutes, then transferred to 20% serum + PBS + 0.5 M sucrose + 15% ethylene glycol + PROH 15% for 25-30 seconds. Thawing is processed by submerging the oocytes in the media: 1). PBS + 20% serum + 0.5 M sucrose, 2). PBS + 20% serum + 0.25 M sucrose, and 3). PBS + 20% serum + 0.1 M sucrose. Imunocytochemistry observed the expression of Bcl-2, bax and Bcl-2/bax ratio.Results: Bcl-2 expression on oocyte in control group differed significantly with treatment group, Bcl-2 expression on cumulus in control group differed significantly with treatment 1 group. Bax expression on oocyte in control group differed significantly with treatment group. Bax expression on cumulus in control group differed significantly with treatment group. Bcl-2/Bax expression ratio on oocyte and cumulus did not differ significantly in all groupConclusion: No difference Bcl-2/Bax expression ratio on oocyte and cumulus between vitrified oocyte pre and post in vitro maturation.
Diagnosis and management of vaginal dryness in menopause
Authors: Baziad Ali
Published: August 2017

Objective: To review the diagnosis and management of vaginal dryness in menopausal womenMethods: Literature reviewResults: Lack of estrogen negatively impacts the vagina and the urinary tract. The vagina becomes dry (atrophic) and then causing pain during sexual intercourse. Vaginal atrophy can be diagnosed in the form of vaginal dryness (75%), painful sexual intercourse (38%), itching and discharge complaints. Sometimes the patient complained pain in urinating, frequent night urination, in-continence and recurrent urinary tract infections. Mucose of the cervix, vagina and vulva are thin. Vagina can bleed easi-ly. Diagnosis can also be made by measuring the pH of the vagina by using litmus paper and vaginal cytology. The management involves administration of local estrogen treatment using weak estrogen (E3) in the form of a cream. E3 cream does not need to be combined with progestogen. Other type of local hormonal therapy (TH) is DHEA cream. Giving a strong estrogen (E2) or equin estrogen should always be combined with progestogen to prevent endometrium hyperplasia, either administered locally or systemically. E3 cream is also safe in women with breast cancer who experienced vaginal atrophy.Conclusion: Lack of estrogen causes vaginal atrophy with symptoms of vaginal dryness. Vaginal atrophy also causes urinary problems. Diagnosis is based on symptoms, examination of vaginal pH and vaginal cytology. The management is by adminis-tering HT with estrogen. E3 creams is the most effective in relieving complaints caused by vaginal dryness and complaints caused by the bladder.
Human pappilomavirus genotype in cervical tissue of patients with Cervical Intraepithelial Neoplasia (CIN) 1, CIN 2, and CIN 3
Authors: Mastutik Gondo , Alia Rahmi , Rahniayu Alphania , Rahaju Anny Setijo , I’tishom Renny
Published: August 2017

Objectives: to determine the genotype of HPV in patients with precancerous lesions of cervical tissue.Materials and Methods: An observational study with cross sectional study of patients paraffin block CIN1, CIN2, CIN3 was conducted in Dr Soetomo Hospital. HPV DNA was extracted from paraffin blocks, then performed PCR and genotyping of HPV. The sample consisted of 28 patients with cervical tissue paraffin blocks CIN1, CIN2 and CIN3. Patients aged between 26-74 years (standard deviation 10,12).Results: HPV genotypes that infect patients with CIN1 were HPV16 and 18, CIN2 were HPV16 and 52 and CIN3 were HPV16, 67, and combined infection HPV16/67 and HPV52/67. HPV genotypes in a single infection were 26/28 (HPV16, HPV18, HPV52 and HPV67), and multiple infections were 2/28 (HPV16/67 and HPV52/67).Conclusion: The most dominant HPV genotypes infect patients with precancerous lesions of the cervix were HPV16, HPV67, HPV52, and HPV18.
Theurapeutic effectiveness of rat bone marrow stem cells in Poly Cystic Ovary Syndrome Mice Model on folliculogenesis, TGF-β, GDF-9 expression, and estrogen, TNF- and androgen Levels
Authors: Santoso Budi , Sulistyono Agus , Siahaan Salmon Charles , Widjiati Widjiati
Published: August 2017

Objectives: to identify therapeutic effectiveness of Rat Bone Marrow stem cell in PCOS rats model on folliculogenesis, TGF-beta and GDF-9 expression and on estrogen, TNF-a and androgen levels.Material and Methods: this study is a laboratory experimental research with using animal testing. PCOS was induced by the administration of testosterone propionate hormone into 30 mice. The subjects of this study are divided into 2 groups: stem cell group and control group. The mice were injected with testosterone then vaginal swab was performed to determine the mice cycle. After determining mice in anestrous cycle, stem cell was injected. TNF-a was measured with immunohistochemistry and androgen was examined using ELISA. The data was measured by student t-test.Result: The average number of TNF-a expression in control group was lower than stem cell group (5.35 vs 2.34; p= 0.0026). The average androgen level for stem cell group was lower than mean for control group (2.31 vs 0.40; p= 0.0026).Conclusion: In this study of polycystic model mice, stem cell decreased the expression of TNF-a and androgen level
Influence of Prenatal Class to the Practice of P4K (Birth Planning and Prevention of Birth Complication)
Authors: Faiza Robitha , Notobroto Hari Basuki , Trijanto Bambang , Soedirham Oedojo , Yusuf Ah. , Halim Kusuma
Published: August 2017

Objective: This study aimed to analyze the influence of prenatal class to the practice of P4K (Birth Planning And Prevention Of Birth Complication).Materials and Methods: This study applied analytical survey with cross sectional approach. The number of samples taken was as many as 30 mothers, using simple random sampling. Analysis of data was carried out using ordinal wilcoxon sign rank test. Datas were obtained from interviews and questionnaire.Result: The influence of prenatal class to practice of P4K (Birth Planning and Prevention of Birth Complication) (p = 0,0000). Conclusion: Prental class can influence to practic of P4K.
Three years survival rate of epithelial ovarian cancer patients in Dr. Kariadi Hospital, Semarang, Central Java
Authors: Damayanti Indah Nur , Yulianti Indra , Kusumastuti Etty Hary
Published: August 2017

Objectives: to determine the association between prognostic factors of ovarian cancer with a 3-years survival rate of epithelial ovarian cancer patients.Material and Method:  Retrospective cohort study was conducted in 90 patients (during 2012) at Dr.Kariadi General Hospital. Kaplan meier, Log rank and Cox regression were used to analyse survival rate and prognostic factors that influence the disease.Result: Overall 3-years survival rate of epithelial ovarian cancer patients were 58.5% (Kaplan meier). Three-years survival rates were 89.3%, 44,4%, and 35.1% for patients in stage I, stage II, and stage III, respectively, and no patient survive up to 3 years in stage IV. Prognostic factors that associated with 3-years survival rate were stage of the disease, ascites, residual tumor, and type of histopathology {p<0,001; p=0,001; p=0,004; p=0,041, respectively (Log rank test)}, whereas age and size of tumor were not associated. After using multivariate analysis (Cox regression) only stage of the disease was associated with 3-years survival rate of epithelial ovarian cancer patients.Conclusion: There were an association between stage of the disease, ascites, residual tumor, type of histopathology, and 3-years survival rate of epithelial ovarian cancer patients. Stage of the disease was a prognostic factor that most influence 3-years survival rate of epithelial ovarian cancer patiens in this study.
Characteristics overview of mother with perinatal death at Dr. Soetomo Hospital in 2015
Authors: Haslinda Yulisa , Prasetyo Budi
Published: August 2017

Objectives: to determine the frequency distribution of perinatal mortality and maternal characteristic features in terms of age, parity, gestational age and pregnancy complications in Dr.Soetomo Hospital Surabaya in 2015. Materials and Methods: A descriptive study conducted by collecting data on patients who experienced perinatal mortality of infants born from January to December 2015 in Dr. Soetomo, Hospital Surabaya. Samples were collected using total sampling. The samples must meet the following criteria: mothers of infants with perinatal mortality in Dr. Soetomo Hospital, Surabaya, from January to December 2015.Results: There were 206 perinatal deaths out of 1018 births in Dr. Soetomo during 2015, of which 58% was live birth and 42% was stillbirth. Most of perinatal mortality found in the preterm gestational age as much as 78%, and gestational age 28-<37 weeks (58%). Most of perinatal mortality occured in infants with less than 1500 grams birth weight, which was as much as 53% of all perinatal deaths and infant whose birth weight from1500 to 2500 grams was about 29%. Most perinatal mortality found in multigravida (54%) and in infants whose mothers experienced preeclampsia in pregnancy complications (35%), followed by infant mortality in women with non-obstetric complications (23%).Conclusion: Perinatal mortality in Dr. Soetomo Hospital was mostly found in multigravida mothers, 16-35 years old maternal age, 28-37 weeks gestational age and those with complications of preeclampsia.
Cuestionario de creencias nucleares relacionadas con el consumo de drogas y el craving, para la valoración del riesgo de recaída
Authors: Martínez-González José Miguel , Vilar López Raquel , Lozano-Rojas Oscar , Verdejo-García Antonio
Published: August 2017

El objetivo de la investigación fue diseñar un cuestionario para la evaluación de creencias nucleares en torno al consumo de drogas y el craving.
La muestra estuvo compuesta por 215 pacientes, de los que el 85.8% eran hombres y el 14.2% mujeres en tratamiento por su adicción al alcohol (40%), cocaína (36.3%) y cánnabis (23.7%).
Se realizó un análisis descriptivo de la muestra, análisis de varianza, de regresión y análisis factorial con la finalidad de indagar en la estructura del cuestionario y su relación con variables como la abstinencia o deseo de consumo.
El apartado de creencias relacionadas con las drogas mostró una estructura de cuatro factores: lo que la persona cree que no podrá realizar en ausencia del consumo de drogas, la falta de renuncia al consumo, las condiciones que deben darse para volver a consumir y el consumo como única vía para sentirse bien. El apartado relacionado con el craving mostró tres factores: las emociones negativas como precipitantes del consumo, las emociones positivas y las dificultades atribuidas al afrontamiento del deseo. A su vez, se constata que las creencias tienen más peso en la predicción del deseo en comparación al tiempo de abstinencia.
El cuestionario permite evaluar un conjunto de creencias que muestras factores significativos para el diseño de programas de prevención de recaídas.
Barreras percibidas contra la implementación en los servicios de urgencias hospitalarios en España de un protocolo de cribado de consumo de alcohol e intervención breve en adolescentes
Authors: Falcón María , Navarro-Zaragoza Javier , García-Rodríguez Rosa María , Nova-López Daniel , González-Navarro María Dulce , Mercadal María , García-Algar Oscar , Luna Ruiz-Cabello Aurelio
Published: August 2017

Introducción: El cribado de consumo de alcohol en menores está ampliamente justificado en el ámbito sanitario por la evidencia epidemiológica de consumo y por la especial vulnerabilidad de este colectivo, que además se inicia a edades muy tempranas e ingiere grandes cantidades. Los servicios de urgencias (ED) podrían ser un entorno donde realizar la detección precoz e implementar una intervención breve (IB) por parte de los profesionales.
Objetivo: El objetivo de este estudio es conocer las barreras percibidas por los profesionales sanitarios para implantar con éxito en los servicios de urgencias hospitalarios un protocolo de detección e IB en menores.
Material y métodos: Análisis cualitativo exploratorio mediante grupos focales con preguntas semiestructuradas, flexibles y abiertas para conocer las creencias, actitudes y barreras percibidas por los profesionales de los centros donde se desarrollará un proyecto de cribado de consumo de alcohol e IB en adolescentes que acuden a Urgencias.
Resultados: Las principales barreras percibidas fueron falta de tiempo, sobrecarga de trabajo, desconfianza en la sinceridad de las respuestas, necesidad de protocolos estandarizados de trabajo, desconocimiento de herramientas de cribado validadas y sencillas, falta de entrenamiento/concienciación y dudas médico-legales sobre el consentimiento informado y la confidencialidad del menor.
Conclusiones: Las barreras percibidas para implementar la herramienta de cribado e IB son similares a las descritas por otros autores y sería necesario mejorar la organización de los circuitos asistenciales, no limitar los recursos dedicados a la atención en urgencias y favorecer la motivación y la formación de los profesionales.
Intervalos de confianza para coeficiente Omega: Propuesta para el cálculo
Authors: Ventura-León José Luis
Published: August 2017

La confiabilidad es entendida como una propiedad métrica de las puntuaciones de un instrumento de medida. Recientemente se viene utilizando el coeficiente omega (ω) para la estimación de la confiabilidad. No obstante, la medición nunca es exacta por la influencia del error aleatorio, por esa razón es necesario calcular y reportar el intervalo de confianza (IC) que permite encontrar en valor verdadero en un rango de medida. En ese contexto, el artículo plantea una forma de estimar el IC mediante el método de bootstrap para facilitar este procedimiento se brindan códigos de R (un software de acceso libre) para que puedan realizarse los cálculos de una forma amigable. Se espera que el artículo sirva de ayuda a los investigadores de ámbito de salud.
Far-from-Equilibrium Time Evolution between two Gamma Distributions
Authors: Kim Eun-jin , Tenkès Lucille-Marie , Hollerbach Rainer
Published: August 2017

Many systems in nature and laboratories are far from equilibrium and exhibit significant fluc- tuations, invalidating the key assumptions of small fluctuations and short memory time in or near equilibrium. A full knowledge of Probability Distribution Functions (PDFs), especially time- dependent PDFs, becomes essential in understanding far-from-equilibrium processes. We consider a stochastic logistic model with multiplicative noise, which has gamma distributions as stationary PDFs. We numerically solve the transient relaxation problem, and show that as the strength of the stochastic noise increases the time-dependent PDFs increasingly deviate from gamma distributions. For sufficiently strong noise a transition occurs whereby the PDF never reaches a stationary state, but instead forms a peak that becomes ever more narrowly concentrated at the origin. The addition of an arbitrarily small amount of additive noise regularizes these solutions, and re-establishes the existence of stationary solutions. In addition to diagnostic quantities such as mean value, standard deviation, skewness and kurtosis, the transitions between different solutions are analyzed in terms of entropy and information length, the total number of statistically distinguishable states that a system passes through in time.
The recent geodynamics of Haitian migration in the Americas: refugees or economic migrants?
Authors: Audebert Cedric
Published: August 2017

After having presented the specific migration context of Haiti and its multidimensional vulnerability, this paper shows that the diaspora geography explains, to a large extent, the location of Haitian refugees and asylum seekers in North America and the French Caribbean territories. Then, we explore the relation between migration policy evolution and the development of new migration routes towards South America, where the recognition of the multidimensional nature of this migration has paved the way for the legalization of Haitian migrants, particularly in Brazil. The complementary migration functions of Ecuador, Peru, Brazil and Chile created a new regional migration system centered on the Southeast and the South of Brazil. This emerging South-South migration route is part of a larger Haitian migration system that connects Latin America to North America and the Caribbean.
Migração de Crise: a migração haitiana para o Brasil
Authors: Baeninger Rosana , Peres Roberta
Published: August 2017

Este artigo tem como principal objetivo o estudo da emigração de haitianos e haitianas para o Brasil, a partir da perspectiva teórica das migrações de crise (SIMON, 1995; CLOCHARD, 2007). Parte-se da reconstrução do panorama emigratório do Haiti até a consolidação do Brasil como espaço estratégico deste fluxo imigratório, seja como país de destino ou de trânsito (FERNANDES et al., 2014; BAENINGER; PERES, 2015). Diante do complexo cenário das migrações internacionais no país, utiliza-se o aporte de metodologias mistas (ARIZA; GANDINI, 2012) com análises de registros administrativos brasileiros e também de pesquisa de campo. O perfil sociodemográfico desses imigrantes revela especificidades importantes, como sua condição documentada a partir da concessão de vistos humanitários pelo governo brasileiro ou de solicitações de refúgio. Esta característica dos imigrantes haitianos no Brasil sustenta uma dinâmica diferenciada em relação a outros contingentes migrantes no país, como sua inserção no mercado de trabalho formal e sua migração interna. A presença haitiana no Brasil denota a complexidade do campo social da migração de crise e seus desafios na lógica internacional da emigração de países periféricos para a periferia do capital (BASSO, 2003).
Delayed Profunda Femoris Artery Bleeding After Intramedullary Nailing of an Unstable Intertrochanteric Fracture
Authors: Lee Paul Y.F. , Rao Pathi V.R. , Golding David M. , Brock James
Published: August 2017

Case:

A 75-year-old man underwent intramedullary nailing for an unstable intertrochanteric fracture of the left hip. After surgery and postoperative recovery, he was transferred to a rehabilitation ward. He was able to mobilize at 2 days postoperatively; at 2 weeks postoperatively, he developed the sudden onset of tachycardia, hypotension, and a large hematoma on the left thigh. Following immediate resuscitation, a computed tomography (CT) angiogram demonstrated a bleed from a branch of the profunda femoris artery. The 3-dimensional CT reconstruction implicated the displaced lesser trochanter osseous fragment as the cause of the hemorrhage.

Conclusion:

Surgeons should be aware of this rare complication and the possible etiology of fracture displacement as the cause of a delayed-onset bleed after intramedullary nailing, and they should also be cognizant of the subsequent optimal management.
Arthroscopic Osteochondral Autograft Transfer for Juvenile Osteochondritis Dissecans of the Humeral Head
Authors: Pham Thuy Trang , Kany Jean , Lakhal Walid , Sales de Gauzy Jérôme , Accadbled Franck
Published: August 2017

Case:

Osteochondritis dissecans (OCD) rarely affects the humeral head. We describe a 14-year-old adolescent who, despite conservative treatment, had persistent pain in the left shoulder as well as limited function. Radiographs and a computed tomography (CT) arthrogram revealed an osteochondral defect of the humeral head. He was managed with an arthroscopic osteochondral autograft transfer from the knee, which provided a satisfactory outcome.

Conclusion:

Arthroscopic osteochondral autograft transfer is an effective option for the treatment of OCD of the humeral head.
Osteonecrosis of the Femoral Head and Hip Arthritis in an Adolescent Following an Isolated Fracture of the Greater Trochanter
Authors: Greenberg Alexander , Weil Yoram Alexander , Tsohar Tamir , Lamdan Ron , Liebergall Meir
Published: August 2017

Case:

A healthy adolescent sustained an isolated fracture of the greater trochanter after falling from a height. He was treated nonoperatively. After 10 weeks of improvement, the pain recurred, and osteonecrosis of the femoral head was diagnosed. Core decompression and a bone-marrow injection were performed. Transient relief was achieved, followed by deterioration to end-stage hip arthritis.

Conclusion:

To our knowledge, 19 other cases of isolated fractures of the greater trochanter in adolescents have been reported since 1905. All high-energy injuries (10 cases) progressed to osteonecrosis, independent of the intervention; none of the low-energy cases progressed to osteonecrosis. We advocate vigilance and early magnetic resonance imaging for these injuries to detect and treat osteonecrosis in its early stages.
Jumping Into The Deep: Imposter Syndrome, Defining Success and the New Librarian
Authors: Lacey Sajni , Parlette-Stewart Melanie
Published: August 2017

This article is adapted from a presentation given at the Ontario Library Association Super Conference, held in Toronto, Ontario, February 1-4, 2017. This presentation brought together 80+ participants, ranging from students to early- and mid-career professionals. The goals of this presentation were to recognize and build a shared understanding of how library and information professionals experience imposter syndrome. Through personal experience and research, ideas of imposter syndrome are explored through the lens of new librarians. This discussion included competition in the job market, burnout rates, and social media. Through experience and research, we aimed to share tips and tools for managing and examining imposter syndrome.

Cet article est une adaptation d’une présentation donnée à la Super Conference de l’Ontario Library Association à Toronto, Ontario du 1er au 4 février 2017. Cette présentation a été offerte à un groupe de plus de 80 participants composés d’étudiants ainsi que des professionnels en début et à la mi-carrière. Elle avait comme but de reconnaître et de favoriser une compréhension commune au sein des bibliothécaires et professionnels de l’information vivant le syndrome de l’imposteur. Par le biais d’expériences professionnelles et de la recherche, les idées sur le syndrome de l’imposteur sont examinées du point de vue des nouveaux bibliothécaires. Cette discussion portait sur la compétition sur le marché du travail, les taux d’épuisement professionnel et les médiaux sociaux. Grâce aux expériences et à la recherche, nous voulions partager des stratégies et des outils pour gérer et examiner le syndrome de l’imposteur.
Slip Velocity of Methane Flow in Nanopores With Kerogen and Quartz Surfaces
Authors: Okamoto Naoki , Kobayashi Kazuya , Liang Yunfeng , Murata Sumihiko , Matsuoka Toshifumi , Akai Takashi , Takagi Sunao
Published: August 2017

Slip phenomenon is one of the major characteristics of gas flow through porous media—in particular, in unconventional gas reservoirs with small pore throats, such as tight sands, coal seams, and shale formations. Consequently, a permeability correction needs to be considered to evaluate the gas-flow ability in these reservoirs. Various analytically derived and empirical correction models exist for engineering applications. However, it is not well-understood which one should be implemented in real-shale-reservoir problems. In this paper, slip velocity and permeability for gas flow in nanopores are studied by molecular-dynamics (MD) simulations. For simplicity, the system considered is methane gas flow in a parallel-plate channel of quartz and kerogen. The fluid flow is characterized by the Knudsen number (Kn), which is defined as the ratio between the mean free path and the representative length of the pores. Studies with various Knudsen numbers were conducted by changing (1) the methane density (the mean free path) or (2) the plate-spacing (pore size). Simulation results show that the relationships between slip velocity and Knudsen number and between the permeability-correction factors and Knudsen number agree well with the Beskok and Karniadakis (1994) analytical solution (BK model) for large nanopores (12–34 nm) in both quartz and kerogen cases. This model considered rarefaction and compressibility effects on gas microflows, and was tested experimentally with characteristic dimensions of one-micrometer order. Our simulation results indicate that this model can be extended to nanoflows existing in unconventional reservoirs. Under temperature and pressure conditions that we studied, deviation from the BK model is noted for small nanopores (<12 nm), but for a pore size smaller than 6 nm, it converges to a constant value in the quartz slit pore. In contrast, a radical increase of slip velocity is observed in the kerogen pore. The deviation from the BK model for a pore size smaller than 12 nm is ascribed to the fact that the overall fluid is no longer homogeneous (i.e., the fluid at the interface region plays a crucial role in the overall flow behavior). An adsorption structure is observed in the proximity of the solid walls because of the interaction from the wall molecules. Moreover, it is found that the effect of roughness becomes significant in an extremely small kerogen nanopore.
A Semianalytical Approach To Model Two-Phase Flowback of Shale-Gas Wells With Complex-Fracture-Network Geometries
Authors: Yang Ruiyue , Huang Zhongwei , Li Gensheng , Yu Wei , Sepehrnoori Kamy , Lashgari Hamid R. , Tian Shouceng , Song Xianzhi , Sheng Mao
Published: August 2017

Two-phase flow is generally significant in the hydraulic-fracturing design of a shale-gas reservoir, especially during the flowback period. Investigating the gas- and water-production data is important to evaluate stimulation effectiveness. We develop a semianalytical model for multifractured horizontal wells by incorporating the two-phase flow in both shale matrix and fracture domains. The complex-fracture network, including both primary/hydraulic fractures and secondary/natural fractures, is modeled explicitly as discretized segments. The node-analysis approach is used to discretize the networks into a number of fracture segments and connected nodes, depending on the complexity of the fracture system. The two-phase flow is incorporated by iteratively correcting the relative permeability to gas/water for each fracture segment and capillary pressure at each node with the fracture depletion. The accuracy of the proposed model is confirmed by the numerical model. Subsequently, the early-time gas- and water-production performance is analyzed by use of various fracture geometries and network configurations. The model was also used to history match an actual multistage hydraulically fractured horizontal well in the Marcellus Shale during the flowback period. The research findings have shed light on the factors that substantially influence the gas- and water-production behavior during the flowback period. We also investigate the effects of fracture-network geometries and complexities on the gas/water-ratio (GWR) diagnostic plots. The results depict that the GWR behavior on the diagnostic plots is highly dependent on fracture-network geometry, configuration, and connectivity, which could assist in deriving the critical fracture properties affecting the production performance. This work extends the semianalytical approach previously proposed for modeling single-phase to two-phase flowback problems in unconventional reservoirs with various fracture-network geometries. The method is easier to set up and is less data-intensive than use of a numerical reservoir simulator, and is capable of providing a straightforward and flexible way to model complex-nonplanar-fracture networks in a multiphase-flow environment.
WinRHIZO Technology for Measuring Morphological Traits of Bermudagrass Stolons
Authors: Pornaro Cristina , Macolino Stefano , Menegon Alessandro , Richardson Mike
Published: August 2017

Core Ideas

WinRHIZO technology may provide a method to analyze stolon morphology of grasses.

The scanned length closely predicted the manually measured one.

WinRHIZO technology overestimated diameter when the whole stolon was scanned.

WinRHIZO, a root‐measuring system, may provide an alternative, reliable, and fast method to analyze stolon morphology of grass species. This study evaluated the possibility to use WinRHIZO technology to measure total length and average diameter of bermudagrass [Cynodon dactylon (L.) Pers.] stolons. The length and diameter of 70 stolons collected from four turf‐type cultivars and a wild bermudagrass were measured with a ruler (length) and caliper (diameter), and using WinRHIZO technology, a scanner‐based image analysis system. The scanned length closely predicted the manually measured one and can be successfully used to determine stolon length in samples with a significant amount of biomass. WinRHIZO technology overestimated diameter values when the whole stolon was scanned, while the diameter prediction was more precise when nodes were removed and only internodes were measured.
Long‐term Management of Palmer Amaranth with Herbicides and Cultural Practices in Cotton
Authors: Inman Matthew D. , Jordan David L. , York Alan C. , Jennings Katie M. , Monks David W.
Published: August 2017

Core Ideas

Deep tillage reduced Palmer amaranth populations

Hand‐removal of Palmer amaranth over 4 yr reduced the soil seedbank and maintained a low frequency of glyphosate resistance

Hand‐removal of Palmer amaranth was more effective than deep tillage in preventing an increase in glyphosate resistance

Glyphosate‐resistant (GR) Palmer amaranth (Amaranthus palmeri S. Watts) has become one of the most problematic weeds in cotton (Gossypium hirsutum L.) production systems throughout the southern United States. Research was conducted from 2012 through 2015 in continuous cotton to determine the influence of a single deep tillage operation and annual hand‐removal of Palmer amaranth plants prior to seed production on weed populations, cotton yield, and economic returns when a commercial standard herbicide program was implemented each year. Treatments consisted of both a one‐time deep tillage operation in fall of 2011 and no deep tillage, each with and without annual hand‐removal of Palmer amaranth. The single deep tillage operation reduced Palmer amaranth populations 75% during the 2013 growing season. Differences in weed populations with deep tillage did not always translate into increased yield and economic return. After four growing seasons, cumulative economic return was not affected by deep tillage or hand‐removal. However, hand‐removal of Palmer amaranth plants prior to seed production each year resulted in a lower density and a lower frequency of glyphosate resistance after 4 yr.
Growth, Herbage Accumulation, and Nutritive Value of ‘Tifton 85’ Bermudagrass as Affected by Nitrogen Fertilization Strategies
Authors: Borges Bernardo M. M. N. , Silveira Maria L. , Cardoso Saulo S. , Moline Ederlon F. V. , Coutinho Neto Andre M. , Lucas Fabio T. , Muraoka Takashi , Coutinho Edson L. M.
Published: August 2017

Nitrogen fertilization affects ‘Tifton 85’ bermudagrass (Cynodon spp.) herbage accumulation (HA) and nutritive value; however, forage response may be affected by N fertilizer source, application levels, and environmental conditions. This 2‐yr study evaluated the effect of different N fertilization strategies on Tifton 85 bermudagrass responses in a tropical soil from southeast Brazil. Treatments were two N sources (ammonium nitrate [AN] and urea) applied at 0, 60, 120, 180, and 240 kg N ha−1 harvest−1. Fertilizer sources were enriched with 15N to quantify the recovery of fertilizer‐derived N. Forage was harvested at 30‐d intervals to evaluate HA and shoot N concentration. Leaf area index (LAI), intercepted photosynthetically active radiation (PARi), and chlorophyll index were measured 1 d before harvest. Ammonium nitrate and urea resulted in similar Tifton 85 HA. Maximum Tifton 85 HA (4.6 Mg ha−1) was reached at the fertilization level of 210 kg N ha−1 harvest−1 while critical shoot N concentration, herein defined at 90% relative production, was 23.7 g kg−1. Similarly, critical PARi and LAI were 71% and 4.7 m2 m−2, respectively. Nitrogen recovery in the plant and soil was greater for urea (52%) than AN (41%). Despite the relatively greater shoot N accumulation, N recovery decreased as N levels increased. Nitrogen application level should be adjusted to optimize HA, nutritive value, and N recovery.
Quantitative Effects of Phosphorus on Maize Canopy Photosynthesis and Biomass
Authors: Timlin D. J. , Naidu T. C. M. , Fleisher D. H. , Reddy V. R.
Published: August 2017

The objective of this study was to quantify the response of maize (Zea mays L.) canopy photosynthesis, development and biomass to P under controlled conditions. Maize was grown in Soil‐Plant‐Atmosphere Research (SPAR) chambers in Beltsville, MD, with four levels of P (0 [L], 0.01 [Ml], 0.05 [M2], and 0.2 [H] mmol P L−1) and three levels of N (2, 5, and 12 mmol L−1). Five destructive harvests for biomass were taken. There was no significant N effect, so only the P effects were analyzed, and chambers were pooled over P treatments. Maximum net canopy carbon assimilation in the two lowest P rates was 0.4 g C plant−1 d−1. Carbon assimilation for the M2 rate was half that of the control (1.3 vs. 2.5 g C plant−1 d−1). End of season biomass was decreased relative to the control by 57% in M2 and 79% in L and M1. Leaf appearance rate and area decreased with increasing P deficiency. Differences in tissue P concentrations varied over a narrow range in the P deficiency treatments, suggesting that continued availability of P to maintain growth was important. Decreases in biomass were due to P‐deficiency‐related decreases in leaf growth and photosynthetic rate. Light interception in the low P treatments was near 90%, suggesting that decreases in photosynthesis and leaf growth were due to P effects on metabolic factors rather than reduction in light interception.
Comparison of the Genetic Structure betweenIn Situ and Ex Situ Populations of DongxiangWild Rice (Oryza rufipogon Griff.)
Authors: Liu Sha , Zheng Xiaoming , Yu Liqin , Feng Li , Wang Junrui , Gong Tingting , Liang Xinxia , Qi Lan , Su Long , Ding Yingbin , Xu Rui , Qiao Weihua , Cheng Yunlian , Zhang Lifang , Yang Qingwen
Published: August 2017

In situ and ex situ conservation are two main wild rice (Oryza rufipogon Griff.) protection strategies. Few studies have compared the genetic diversity and genetic structure of wild rice between ex situ and in situ populations. Thus in this study, 278 individuals collected from three in situ and nine ex situ populations of Dongxiang wild rice (DXWR) were genotyped using 32 microsatellite loci to compare their population genetic structure and genetic diversity. Model‐based grouping, neighbor‐joining tree, and principal coordinate analyses showed that there were significant differences in the population structure between in situ and ex situ populations. The in situ populations clustered into three major groups, which were in accordance with their geographical distribution (Anjiashan, Zhangtang, and Shuitaoshu). However, the nine ex situ populations of DXWR showed no differences among populations, and there was a high heterozygosity for each individual. In addition, one of the in situ populations (Zhangtang) was not represented in the ex situ conservation garden. Given the above results, we concluded that the germplasm of both in situ and ex situ populations are precious, and that the combination of these two conservation strategies is necessary to protect the germplasm resources of DXWR, but special emphasis should be placed on in situ conservation to better maintain their genetic identities. In addition, it is necessary to recollect genetic resources from in situ populations for ex situ conservation, especially from the Zhangtang population.
Harvest Stubble Height and K Fertilization Affect Performance of Jiggs and ‘Tifton 85’ Bermudagrasses
Authors: Kohmann Marta M. , Sollenberger Lynn E. , Vendramini João M.B. , Silveira Maria L. , Moreno Leonardo S. B.
Published: August 2017

Use of Jiggs bermudagrass [Cynodon dactylon (L.) Pers.] for hay has increased in warm climates like southern Florida, but effects of defoliation and K fertilizer management on Jiggs adaptation to environments with frequent winter freezes are not known. During 2 yr, K fertilization (0, 17, and 34 kg K ha−1 harvest−1) and cutting stubble height (SH, 8 and 16 cm every 28 d) effects on herbage accumulation (HA), ground cover, K removal, and tissue and soil K were evaluated for Jiggs and ‘Tifton 85’ (Cynodon spp.) bermudagrasses. All treatments received 240 kg N ha−1 yr−1. Herbage accumulation was greater for 8‐ than 16‐cm SH (8050 and 7330 kg ha−1 yr−1, respectively) and increased linearly from 7040 to 8120 kg ha−1 yr−1 with increasing K fertilization. Potassium fertilization did not affect grass percentage ground cover, but Jiggs had 17 (2014) and 40% (2015) greater cover than Tifton 85. Increasing K fertilization increased tissue K concentration (15 to 19 g kg−1 in 2014 and 13 to 25 g kg−1 in 2015) and K removal in HA (from 104 to 149 kg ha−1 in 2014 and 88 to 216 kg ha−1 in 2015). During 2 yr, soil‐extractable K declined 6 mg kg−1 for the zero K level but increased 6 mg kg−1 when K was applied. In a cooler subtropical region characterized by frequent winter freezes and across a range of K fertilizer and SH levels, Jiggs sustained ground cover better than Tifton 85, but K fertilization did not affect persistence.
The intricacies and challenges of ensuring safe and healthy mining environments in South Africa
Authors: O. Ntsuxeko Shibambu , O. Odeku Kola
Published: August 2017

In South Africa, during the apartheid era, the mining sector had records of extremely high injuries and occupational diseases that led to massive death of mine workers who were predominantly Blacks. In the post-apartheid era, measures such as monitoring, inspections, investigations and regulatory interventions have been introduced to identify hazards with the aim of minimizing and eliminating the risk to health and safety of mine workers. However, despite these interventions and measures, the pace of ensuring total eradication of accidents and fatalities is slow and there is a need to accelerate it, as every life is important. This can only be realized if there is substantial improvement in the implementation, enforcement and compliance with legislation, measures and policies that have been put in place to curb accidents, diseases and fatalities in the mining sector. This article examines the effectiveness of the interventions, points out the weaknesses and provides viable solutions for improvement. The article also highlights the importance of trade unions and technologies as catalysts to drive and improve safety standards in the mining environments.
Prevalence and antimicrobial resistance of Campylobacter isolates from poultry offals
Authors: Wysok Beata , Wojtacka Joanna , Łaszczych Agnieszka  Wiszniewska – , Szteyn Joanna , Gomółka–Pawlicka Małgorzata
Published: August 2017

The aim of the study was to determine the presence of Campylobacter strains in poultry by-products and define antimicrobial resistance of isolates. In total, 400 samples were tested among which 300 included the liver, heart and stomach, and 100 samples represented the contents of the cecum. The samples were taken from chickens and turkeys in the slaughterhouse after evisceration. The prevalence of Campylobacter in chicken samples was 100% with regards to the contents of cecum and offal. The turkey origin Campylobacter strains were noted in 76% of the livers, 78% hearts and 82% gizzards. The samples of cecum contents were positive in 60%. Species analysis of the strains isolated showed C. jejuni as dominant. The estimation of sensitivity to antibiotics showed that Campylobacter strains were most frequently resistant to quinolones and tetracyclines. Resistance to ciprofloxacin was detected among 52.7% and 52.5% chicken and turkey origin strains. The same was noted regarding nalidixic acid, resistance to which was shown in 56% and 58.5% isolates, respectively. Regarding tetracyclines, the highest resistance of the strains from chicken and turkey was detected to doxycyclinum in 61.3% and 53.3% of isolates, respectively. However the highest sensitivity was showed to erythromycin, gentamicin and chloramphenicol. Only one C. coli strain from turkey offal was resistant to gentamicin. Simultaneously multi drug resistance was defined. The aimed studies showed that 62% of C. jejuni and 53.8% of C. coli strains from chicken offal were resistant to two or more agents. In turkey origin isolates MDR was detected in 54.7% of C. jejuni and 53.3% of C. coli strains.
Evaluation of bone marrow in female fallow deer kept in captivity
Authors: Snarska Anna , Pomianowski Andrzej , Sobiech Przemysław , Gonkowski Sławomir , Lew Marcin , Drążek Magdalena , Żarczyńska Katarzyna , Wysocka Dominika , Rytel Liliana , Stopyra Artur
Published: August 2017

Proper processes of hematopoiesis have a major impact on the results of blood morphological analyses in healthy animals. The aim of this study was to evaluate bone marrow smears of female fallow deer kept in captivity and comparing them to morphological analysis of peripheral blood. To achieve the aim of this study bone marrow was collected from 10 nonpregnant, 2-year-old female fallow deer. Smears stained by the May-Grünwald Giemsa method were analyzed. Bone marrow samples were collected using a biopsy needle from the 3rd – 4th rib in the sternal region into test tubes without coagulant. Whole blood for hematological analysis was sampled from the external jugular vein into 2 ml test tubes containing K2EDTA. The results of the research indicate significant morphological differences of white blood cells line and red blood cells line of fallow deer in comparison to other ruminants. Proerythroblasts of fallow deer appear to have a higher number of nuclei that stain more clearly in the MGG method. In red the blood cells line a high percentage of polychromatic erythroblasts (17.2%) and basophilic erythroblasts (8.19%) was noted. In granulocyte line only 0.97% of myeloblasts was observed in bone marrow smears. The percentage of segmented and band granulocytes was determined at 6.86% and 2.27% consequently. In the lymphoblastic line of fallow deer a low percentage of plazmocytes was observed (1.16%). In the platelets line the percentage of megakaryoblasts (5.85%) was lower than megakaryocytes (7.9%). This report is the first study concerning hematopoiesis in female fallow deer.
ESTUDO EXPERIMENTAL SOBRE OS EFEITOS DO IMPACTO EM TRAÇÃO NA RESISTÊNCIA À FADIGA E NO ALONGAMENTO DE FIOS DE POLIÉSTER APLICADOS EM CABOS DE AMARRAÇÃO DE PLATAFORMAS OFFSHORE
Authors: Louzada Emilio Luiz Vieira , Guilherme Carlos Eduardo Marcos , Stumpf Felipe Tempel
Published: August 2017

Atualmente, o início da exploração de petróleo em águas cada vez mais profundas trouxe consigo a preferência pelo uso de cabos sintéticos para as amarrações de plataformas. Este trabalho tem por objetivo conhecer os efeitos do impacto na resistência à fadiga e no alongamento de fios de poliéster (PET). Através dos materiais e equipamentos disponibilizados pela Universidade Federal do Rio Grande – POLICAB é realizado um ensaio de impacto e em seguida o ensaio de fadiga até a ruptura do multifilamento polimérico, permitindo comparar os resultados com os encontrados na literatura e constatando-se que uma carga vertical súbita provoca redução na vida útil do fio.