bluuebunny/crossref_metadata_2025_split huggingface dataset:
PERUBAHAN AKTIVITAS SELF MANAGEMENT PADA KLIEN PENYAKIT PARU OBSTRUKSI KRONIK DI RUMAH SAKIT UMUM DAERAH DEPATI HAMZAH KOTA PANGKALPINANG PROVINSI BANGKA BELITUNG
Authors: Anggraini Rima Berti 
Published: March 2019

PPOK adalah sekelompok penyakit paru yang ditandai oleh peningkatan resistensi saluran nafas yang terjadi akibat penyempitan lumen saluran napas bawah. Karakteristik dari gejala PPOK adalah dyspnea, batuk, dan produksi sputum berlebihan. Self management adalah strategi yang memberikan kesempatan pada klien PPOK untuk mengatur atau memantau perilakunya sendiri terkait dengan status kesehatannya. Tujuan penelitian ini untuk mendapatkan informasi mendalam tentang pengalaman self management pada klien PPOK. Penelitian ini menggunakan rancangan penelitian kualitatif dengan pendekatan Fenomenologi. Informan yang digunakan dalam penelitian ini 5 orang berjenis kelamin laki-laki. Penelitian ini dilakukan di Rumah Sakit Umum Daerah Depati Hamzah kota Pangkalpinang Bangka Belitung. Waktu penelitian dilakukan pada bulan April - juni 2016. Hasil penelitian didapatkan 1 tema yaitu perubahan aktivitas yang terjadi. Saran bagi klien PPOK adalah untuk lebih memahami tentang penyakitnya dan meningkatkan self management dalam kehidupan sehari-hari.
Radiological Manifestations of Obstructed Hemivagina and Ipsilateral Renal Anomaly Syndrome: A Rare Complex Müllerian and Wolffian Duct Anomaly
Authors: Patil Tushar , Khurjekar Devarati , Ojha Vikash 
Published: March 2019

AbstractObstructed hemivagina and ipsilateral renal anomaly (OHVIRA) syndrome is a rare complex Müllerian and Wolffian duct anomaly. It is also known as Herlyn–Werner–Wunderlich syndrome (HWWS). It includes unilateral renal anomalies and uterine didelphys. It generally occurs at puberty and exhibits non-specific and variable symptoms with acute or pelvic pain shortly following menarche, causing a delay in the diagnosis. We report here a 16-year-old female presenting with progressive cyclical pelvic pain, where magnetic resonance imaging (MRI) suggested the diagnosis of the OHVIRA syndrome. She was managed by surgical resection of the septum and draining of the obstructed vagina.
Ginning Efficiency and Fiber Quality Properties of Cotton as Affected by Roller Gin Stand Feeding Methods and Seed Cotton Grade
Authors: El-Banna Aly A. A. 
Published: March 2019

Aims: Attaining the highest ginning efficiency process and fiber quality properties of Egyptian cotton cultivar ̔ Giza 88᾿during feeding methods of roller gin stand is the ultimate objective of the community of cotton field industry for local uses, but the productivity of the three feeding methods of conventional roller gin stand used in ginning process still limited.
Therefore, the aim of this investigation is to overcome this obstacle.
Study Design: This investigation was conducted in a completely randomized design with three replicates and analyzed as a factorial experiment.
Place and Duration of Study: Plant Production Department, the Faculty of Agriculture (Saba Basha), Alexandria University, Egypt during 2017.
Methods: Four seed cotton grades; namely, Good to Fully Good (G/FG), Good + ¼ (G + ¼), Good (G) and Good -¼ (G - ¼) belonging to ̔ Giza 88᾿ cotton cultivar were used in this work. The extra-long staple Egyptian cotton variety with the pedigree and origin of cotton Giza 88 (Giza 77 x Giza 45 B) was used. This work was carried out in 2017. About half cantar (1 cantar = 157.5 kg) of each seed cotton grade as a bulk sample was thoroughly mixed and checked and reclassified by a committee of three expert classers belong to the Cotton Arbitration for Testing General Organization (CATGO), in the gin plan.
Results: The obtained results indicated that the gin stand's hand feeding method (control treatment); results in significant increases the highest mean values of the gin stand capacity (0.97 kg lint/inch/h), Lint % (36.59%) and lint grade code (27.33) and the lowest mean value of the ginning time (1.42 h/cantar). Meanwhile, the Belt (2 row) as a mechanical feeding method; gave rise to the lowest mean value of gin stand capacity (0.89 kg lint/inch/h). The differences in fiber length parameters (Upper half mean length and short fiber index), fiber elongation %, micronaire reading, yellowness degree (+b) were not significantly affected. The highest seed cotton grade (Good / Fully Good) gave the better lint cotton grade and the best fiber properties tested by HVI instrument of ̔ Giza 88᾿ cotton cultivar.
Conclusion: The hand feeding method of seed cotton to the gin stand surpassed all studied feeding methods in gin stand productivity, lint percentage and the most HVI fiber properties are better classer grade. Though, this method is recommended to be used specially with the high levels of the extra-long cottons.
Cylinder feeding method ranked first in order among studied mechanical method and it could be recommended for ginning medium and low seed cotton level.
Belt (2 rows) is the preferred feeding method regardless of gin stand productivity.
Composition and Physical Properties of the Natural Gas Supplied for Domestic Use through the Distribution Network
Authors: C. Fernández-Feal M. , Sánchez-Fernández B. , R. Sánchez-Fernández L. , R. Pérez-Prado J. 
Published: March 2019

Aims: To assess the composition of the Natural Gas (NG) supplied for domestic consumption through the distribution network to correlate the physical properties linked to it were to be determined in order to investigate their fluctuations.
Study Design: The samples were analyzed in accordance with the method described in the ISO 6974‑4 standard, “Natural Gas. Determination of Composition with Defined Uncertainty by Gas Chromatography”.
Place and Duration of Study: Center of Technology Research, Fuels Laboratory, between January and December 2016.
Methodology: Over the course of the year, a total of eighty-four samples of natural gas for domestic use were analyzed. These were collected at a rate of one per month in seven cities in the geographical zone under study (Galicia_Spain), in which the number of users is significant.
Results and Conclusion: The protocols for technical management of the Gas System have a section on quality specifications for Natural Gas at entry points to the system. This sets limits for only three of the physical properties of natural gas: Wobbe index, superior calorific value and relative density.
The figures obtained for Wobbe index, superior calorific value and relative density from the eighty-four samples studied showed that the quality of the Natural Gas distributed remained steadily within the acceptable limits throughout the whole year. The values for standard deviations bore witness to the fact that any variations did not significantly alter the quality of the Natural Gas supplied.
The concentrations of the odorant, THT, were always above the recommended value of 18.0 mg/Nm3, the fluctuations noted over the course of the year were such as to make it possible to see them as excessive. In some instances, a high concentration of odorant may lead users to erroneous impressions, so that they come to think that there are leaks from the gas-pipes or even that the gas is not burning properly.
Production, Characterization and Glycerine Analysis of Soybean Oil and Its Biodiesel
Authors: I. Ogedengbe I. , I. Bello E. 
Published: March 2019

Aims: To examine the viability of Soybean Oil as a feedstock for Biodiesel production by carrying out its characterization and examining its thermodynamic properties to see if they are within ASTM limits.
Study Design: Place and Duration of Study-The production was conducted in the Department of Mechanical Engineering of the University while the characterization of the Biodiesel was conducted at the Postgraduate Research Laboratory.
Samples of Glycine ma (L.) merril were obtained from a local market in the Akure town of Ondo State, Nigeria in October of 2014.
Methodology: Oil Extraction-The oil was extracted using soxhlet extractor, but before extraction the soybeans were crushed in a blender to increase the area exposed to the petroleum ether solvent. The extraction flask was dried in an oven at 105°C and the weight was measured after cooling. 2.5 g of soybean was poured into the flask and leached for 5 hours after which extraction flask was removed from the mantle heater after all the petroleum ether was removed with rotary evaporator and the oil was oven dried at 105°C for one hour to remove any water present. The flask was finally cooled to room temperature in a desiccators and the weight of the flask and dried oil was again measured.
Transesterification and Glycerine Analysis Process: 50 mg of the extracted oil was esterified 5 times at 95°C with 3.5 ml of the 0.5 M KOH of dried methanol. The mixture was neutralized using 0.7M HCL. 3 ml of 14% boron triflouride in methanol was added and the mixture was heated for 5 minutes at 90°C to achieve completed methylation process. The fatty acid methyl esters were thrice extracted from the mixture with redistilled methanol. The content was concentrated to 1mL for gas chromatography analysis and 1 µL was injected into the port of the Gas Chromatograph analyzer.
Results: most of the pertinent parameters for the determination of validity were found to be within ASTM limits, namely: Flash Point (135°c / 130°c min); Kinematic Viscosity (4.80 / between 1.9 - 6); Cetane number (55 / 47 min); Copper Strip Corrosion (1 / 3 max); %Carbon Residue (0.12 / 0.050); %Sulphated Ash (0.044 / 0.020).
Conclusion: Given the obviously good numbers associated with the study relative to ASTM standards, Soybean is a viable source of Biodiesel. However, further study could explore the use of Soybean chaff and other waste matter obtainable from it rather than the entire crop.
Fritz and Clara Haber: united in peace – divided in war. Instruction for Multi‐Perspective, Interdisciplinary Lessons About an Outstanding Couple of Chemists at the Beginning of the 20th Century
Authors: Rohrbach‐Lochner Friederike , von Borstel Gregor 
Published: March 2019

AbstractNicht immer reicht die Zeit, das für viele Belange bedeutsame Haber‐Bosch‐Verfahren im Chemieunterricht zu behandeln. Ist es da sinnvoll, dass Schülerinnen und Schüler auch 100 Jahre nach der Verleihung des Nobelpreises zusätzlich die handelnden Personen hinter der Entdeckung der Ammoniaksynthese näher kennenlernen und kritisch beurteilen? Wir denken ja! Hier wird eine Unterrichtseinheit vorgestellt, die zu einer multiperspektivischen Betrachtung des Lebens und des Werks von Fritz Haber und seiner Frau Clara Immerwahr anregt. Das Verstehen und Anwenden von Fachinhalten wie dem chemischen Gleichgewicht, dem Prinzip von Le Chatelier, der Wirkung von Katalysatoren oder dem Stickstoffkreislauf geht einher mit der Reflexion über Geschlechterrollen, der Motivation von Wissenschaftlerinnen und Wissenschaftlern und den Folgen ihres Handelns. Ausgangspunkt ist dabei die Frage nach der Umbenennung einer Fritz‐Haber‐Straße, die zu einer arbeitsteiligen Auseinandersetzung mit exemplarisch wichtigen Stationen und Entdeckungen im Leben der Akteure führt und in einer bewertenden Podiumsdiskussion mündet.
Metamorphoses of an Experiment – From Hightech UV Immersion Lamp Reactor to Low‐Cost TicTac®‐Cell
Authors: Yurdanur Yasemin , Tausch Michael W. 
Published: March 2019

AbstractAnknüpfend an A. F Kekulés Definition des Forschungsgegenstands der Chemie werden die Metamorphosen des Modellexperiments Photo‐Blue‐Bottle aufgezeigt, das für die Simulation des Kreislaufs Photosynthese/Atmung entwickelt wurde. Das Experiment wurde auf der Grundlage fachwissenschaftlicher Erkenntnisse, sicherheitstechnischer Anforderungen sowie kommerziell verfügbarer Chemikalien und Lichtquellen im Sinne der didaktischen Zielsetzung schrittweise optimiert.
Biogeographic context dependence of trophic cascade strength in bromeliad food webs
Authors: LeCraw Robin M. , Srivastava Diane S. 
Published: March 2019

AbstractEcosystem functions and the biomass of lower trophic levels are frequently controlled by predators. The strength of top‐down control in these trophic cascades can be affected by the identity and diversity of predators, prey, and resources, as well as environmental conditions such as temperature, moisture, and nutrient loading, which can all impact interaction strength between trophic levels. Few studies have been able to replicate a complete community over a large geographic area to compare the full trophic cascade in a manipulative experiment. Here, we identify geographic dependency in trophic cascade strength, and the driving factors and specific mechanisms behind it, by combining geographically replicated experiments with a novel approach of community analogues of common garden and transplant experiments. We studied a predator–detritivore–detritus food web in bromeliads in Puerto Rico, Costa Rica, and Brazil. We found that interaction strengths between resources, consumers, and predators were strongly site‐specific, but the exact mechanism differed between trophic levels. Large bodied predators created strong interaction strengths between predator and consumer trophic levels, reducing consumer abundance regardless of the geographic location, whereas small‐bodied predators created weak interactions with no impact on consumer abundances in any site. In contrast, the interaction strength between consumers and resources varied among sites, depending on the dominant species of leaf detritus. More labile leaf species in Costa Rica created a strong consumer–resource interaction and therefore strong trophic cascade, whereas tougher leaf species in Brazil created a weak consumer–resource interaction, and an overall weaker trophic cascade. Our study highlights the importance of replicating experiments over geographic scales to understand general patterns of ecological processes.
Designing meaningful outcome parameters using mobile technology: a new mobile application for telemonitoring of patients with heart failure
Authors: Werhahn Stefanie Maria , Dathe Henning , Rottmann Thorsten , Franke Thomas , Vahdat Dan , Hasenfuß Gerd , Seidler Tim 
Published: March 2019

AbstractAimsHealth data captured by commercially available smart devices may represent meaningful patient‐reported outcome measures (PROMs) in heart failure (HF) patients. The purpose of this study was to test this hypothesis by evaluating the feasibility of a new telemonitoring concept for patients following initial HF hospitalization.Methods and resultsWe designed a cardio patient monitoring platform (CPMP) that comprised mobile iOS‐based applications for patients' smartphone/smartwatch and the equivalent application on a physicians' tablet. It allowed for safe and continuous data transmission of self‐measured physiological parameters, activity data, and patient‐reported symptoms. In a prospective feasibility trial with 692 patient days from 10 patients hospitalized for newly diagnosed HF with reduced ejection fraction (mean left ventricular ejection fraction (LVEF) 26.5 ± 9.8%), we examined the CPMP during the first 2 months following discharge (69 ± 15 observation days per patient). The mean daily step count recorded by the mobile devices emerged as a promising new PROM. Its 14 day average increased over the study period (3612 ± 3311 steps/day at study inclusion and 7069 ± 5006 steps/day at end of study; P < 0.0001). It is unique for continuously reflecting real‐life activity and correlated significantly with traditional surrogate parameters of cardiac performance including LVEF (r = 0.44; 95% CI 0.07–0.71; P = 0.0232), 6 min walk test (r = 0.67; 95% CI 0.38–0.84; P = 0.0002), and scores in health‐related quality of life questionnaires.ConclusionsWe provide the first patient monitoring platform for HF patients that relies on commercially available iOS/watchOS‐based devices. Our study suggests it is ready for implementation as a tool for recording meaningful PROMs in future HF trials and telemonitoring.
Developing an orbitally shaken bioreactor featuring a hollow cylinder vessel wall
Authors: Zhu Likuan , Song Boyan , Wang Zhenlong 
Published: March 2019

AbstractBACKGROUNDNowadays, orbitally shaken bioreactors (OSRs) show promising application in mammalian cell cultivation. Designing a suitable vessel geometry for cell culture is an important issue in the research on bioreactors.RESULTSA three‐dimensional computational fluid dynamic (CFD) model was established to evaluate the performance of a hollow OSR we proposed. The CFD model was validated by comparing the simulated and experimental liquid wave heights. The fluid velocity distribution verified that the hollow cylinder wall could improve the mixing efficiency due to the vanishing of central‐low velocity region. Furthermore, the volumetric oxygen transfer coefficient (kLa) and shear stress were investigated in the hollow OSR at different values of the inner diameter compared to the outer diameter (di/d).CONCLUSIONTo achieve a high level of mixing, a higher value of di/d is more preferable but too high a value of di/d has a risk of low mixing. To achieve high oxygen transfer rate and low shear stress, the value of di/d should be kept lower. For all the cases studied, the hydrodynamic stress in the hollow OSRs was moderate for mammalian cell cultivation. © 2019 Society of Chemical Industry
Perspectives of US women participating in a candidate PrEP study: adherence, acceptability and future use intentions
Authors: Amico K Rivet , Ramirez Catalina , Caplan Margaret R , Montgomery Brooke EE , Stewart Jennifer , Hodder Sally , Swaminathan Shobha , Wang Jing , Darden‐Tabb Noshima Y , McCauley Marybeth , Mayer Kenneth H , Wilkin Timothy , Landovitz Raphael J , Gulick Roy , Adimora Adaora A ,   HPTN 069/A5305 Study Team and HPTN Women at Risk Committee
Published: March 2019

AbstractIntroductionLimited data exist on acceptability of candidate pre‐exposure prophylaxis (PrEP) regimens among US women. We evaluated PrEP experiences, attitudes and future use intentions among sexually active women who completed the US‐based HIV Prevention Trials Network 069/AIDS Clinical Trials Group 5305 study.MethodsWomen participated in the study between March 2013 and November 2015. We analysed computer‐assisted self‐interview (CASI) surveys among 130 women and conducted in‐depth interviews among a subset of 26 women from three sites. Interviews were conducted in mid/late‐2015.ResultsMost women (57%) reported very good/excellent PrEP adherence on CASI, although 21% acknowledged over‐reporting adherence at least some of the time. Commitment to preventing HIV infection, a sense of ownership of the study, and keeping pills stored in a visible location facilitated adherence. Adherence barriers included “simply forgetting” and being away from home. Most women interviewed did not intend to use PrEP in the future because of lack of perceived need due to their own (as opposed to their partners’) low‐risk behaviour and concerns about affordability – but not because of side effects or other characteristics of the regimens.ConclusionsImproving HIV prevention options for US women will require access to affordable PrEP as well as expanding women's understanding of relationship‐ and community‐level factors that increase their risk of acquiring HIV.
Quantitative multivoxel proton MR spectroscopy for the identification of white matter abnormalities in mild traumatic brain injury: Comparison between regional and global analysis
Authors: Davitz Matthew S. , Gonen Oded , Tal Assaf , Babb James S. , Lui Yvonne W. , Kirov Ivan I. 
Published: March 2019

Background3D brain proton MR spectroscopic imaging (1H MRSI) facilitates simultaneous metabolic profiling of multiple loci, at higher, sub‐1 cm3, spatial resolution than single‐voxel 1H MRS with the ability to separate tissue‐type partial volume contribution(s).PurposeTo determine if: 1) white matter (WM) damage in mild traumatic brain injury (mTBI) is homogeneously diffuse, or if specific regions are more affected; 2) partial‐volume‐corrected, structure‐specific 1H MRSI voxel averaging is sensitive to regional WM metabolic abnormalities.Study TypeRetrospective cross‐sectional cohort study.PopulationTwenty‐seven subjects: 15 symptomatic mTBI patients, 12 matched controls.Field Strength/Sequence3T using 3D 1H MRSI over a 360‐cm3 volume of interest (VOI) centered over the corpus callosum, partitioned into 480 voxels, each 0.75 cm3.Assessment
N‐acetyl‐aspartate (NAA), creatine, choline, and myo‐inositol concentrations estimated in predominantly WM regions: body, genu, and splenium of the corpus callosum, corona radiata, frontal, and occipital WM.Statistical TestsAnalysis of covariance (ANCOVA) to compare patients with controls in terms of regional concentrations. The effect sizes (Cohen's d) of the mean differences were compared across regions and with previously published global data obtained with linear regression of the WM over the entire VOI in the same dataset.ResultsDespite patients' global VOI WM NAA being significantly lower than the controls', no regional differences were observed for any metabolite. Regional NAA comparisons, however, were all unidirectional (patients' NAA concentrations < controls') within a narrow range: 0.3 ≤ Cohen's d ≤ 0.6.Data ConclusionSince the patient group was symptomatic and exhibiting global WM NAA deficits, these findings suggest: 1) diffuse axonal mTBI damage; that is 2) below the 1H MRSI detection threshold in small regions. Therefore, larger, ie, more sensitive, single‐voxel 1H MRS, placed anywhere in WM regions, may be well suited for mTBI 1H MRS studies, given that these results are confirmed in other cohorts.Level of Evidence: 2Technical Efficacy: Stage 3J. Magn. Reson. Imaging 2019;50:1424–1432.
Level of evidence for promising subgroup findings: The case of trends and multiple subgroups
Authors: Tanniou Julien , Smid Sanne C. , van der Tweel Ingeborg , Teerenstra Steven , Roes Kit C.B. 
Published: March 2019

Subgroup analyses are an essential part of fully understanding the complete results from confirmatory clinical trials. However, they come with substantial methodological challenges. In case no statistically significant overall treatment effect is found in a clinical trial, this does not necessarily indicate that no patients will benefit from treatment. Subgroup analyses could be conducted to investigate whether a treatment might still be beneficial for particular subgroups of patients. Assessment of the level of evidence associated with such subgroup findings is primordial as it may form the basis for performing a new clinical trial or even drawing the conclusion that a specific patient group could benefit from a new therapy. Previous research addressed the overall type I error and the power associated with a single subgroup finding for continuous outcomes and suitable replication strategies. The current study aims at investigating two scenarios as part of a nonconfirmatory strategy in a trial with dichotomous outcomes: (a) when a covariate of interest is represented by ordered subgroups, eg, in case of biomarkers, and thus, a trend can be studied that may reflect an underlying mechanism, and (b) when multiple covariates, and thus multiple subgroups, are investigated at the same time. Based on simulation studies, this paper assesses the credibility of subgroup findings in overall nonsignificant trials and provides practical recommendations for evaluating the strength of evidence of subgroup findings in these settings.
An extension of the Bessel–Wright transform in the class of Boehmians
Authors: Berkak Imane , Loualid El Mehdi , Daher Radouan 
Published: March 2019

Abstract
In this paper, we first construct a suitable Boehmian space on which the Bessel–Wright transform can be defined and some desired properties are obtained in the class of Boehmians. Some convergence results are also established.