bluuebunny/crossref_metadata_2025_split huggingface dataset:
Solvent-Selection Criteria Based on Diffusion Rate and Mixing Quality for Steam/Solvent Applications in Heavy-Oil and Bitumen Recovery
Authors: Marciales A.. , Babadagli T.. 
Published: May 2016

Summary
Heavy-oil and bitumen recovery requires high recovery factors to offset the extreme high cost of investments and operations. Attention has been given to solvent injection for this purpose, and it has been observed that high recoveries are achievable when it is combined with steam injection. Heavier (“liquid”) solvents (liquid at ambient conditions) are especially becoming more popular because of availability and transportation. High oil prices will allow the application of this kind of technique if a proper design is made to retrieve the injected solvent efficiently. “Liquid” solvents are advantageous because they yield a better-quality mixing (especially with very heavy oils and bitumen) but a lower diffusion rate than lighter solvents such as propane or butane. Despite this understanding, there still is not a clear screening criterion for solvent selection to mitigate both diffusion rate and the quality of the mixture.
In this study, two main solvent-selection-criteria parameters—diffusion rate and mixing quality—were considered to evaluate solvent-injection efficiency at different temperatures. An optical method under static conditions and image-processing techniques were proposed to determine 1D diffusivity of liquid solvent into a wide range of oil samples in a capillary tube. This sampling range varies from 40-cp oil to 250-cp oil, for which digital-image treatment was developed. X-ray computerized tomography (CT) was applied for heavier (and darker) oils (viscosity range of 20,000 cp to 400,000 cp). The diffusion coefficients were then computed through nonlinear curve fitting on the basis of an optimization algorithm to ensure that the obtained values were in agreement with available analytical solutions. Next, viscosity measurements and asphaltene precipitation for the same heavy-oil/solvent mixtures were performed to determine the mixing quality. The ideal solvent types for different oil types were determined by using the results from the diffusion-rate and mixing-quality experiments.
The experimental and semianalytical outcome of this research would be useful in the determination of the best solvent type for a given oil and in understanding the key factors that influence the quality of mixtures including viscosity reduction and probable asphaltene precipitation.
Community Structure of a Mental Health Internet Support Group: Modularity in User Thread Participation
Authors: Carron-Arthur Bradley , Reynolds Julia , Bennett Kylie , Bennett Anthony , Cunningham John Alastair , Griffiths Kathleen Margaret 
Published: May 2016

Background
Little is known about the community structure of mental health Internet support groups, quantitatively. A greater understanding of the factors, which lead to user interaction, is needed to explain the design information of these services and future research concerning their utility.

Objective
A study was conducted to determine the characteristics of users associated with the subgroup community structure of an Internet support group for mental health issues.

Methods
A social network analysis of the Internet support group BlueBoard (blueboard.anu.edu.au) was performed to determine the modularity of the community using the Louvain method. Demographic characteristics age, gender, residential location, type of user (consumer, carer, or other), registration date, and posting frequency in subforums (depression, generalized anxiety, social anxiety, panic disorder, bipolar disorder, obsessive compulsive disorder, borderline personality disorder, eating disorders, carers, general (eg, “chit chat”), and suggestions box) of the BlueBoard users were assessed as potential predictors of the resulting subgroup structure.

Results
The analysis of modularity identified five main subgroups in the BlueBoard community. Registration date was found to be the largest contributor to the modularity outcome as observed by multinomial logistic regression. The addition of this variable to the final model containing all other factors improved its classification accuracy by 46.3%, that is, from 37.9% to 84.2%. Further investigation of this variable revealed that the most active and central users registered significantly earlier than the median registration time in each group.

Conclusions
The five subgroups resembled five generations of BlueBoard in distinct eras that transcended discussion about different mental health issues. This finding may be due to the activity of highly engaged and central users who communicate with many other users. Future research should seek to determine the generalizability of this finding and investigate the role that highly active and central users may play in the formation of this phenomenon.
Les Saintes-Claires d'Amiens au XVIIIe siècle
Authors: Bliaux Fabienne 
Published: May 2016

De Clarissen van Amiens in de XVIIIde eeuw.
De Clarissen van Amiens leefden in de xvmde eeuw nog naar de Constitutions van hun stichteres, de heilige Colette. Zelfs toen zij afhingen van de capucijnen, voor hun geestelijke leiding, van wie zij de naam overnamen, ble- ven zij een intens spiritueel leven en een voortdurende zorg voor de individuele en collectieve armoede in acht nemen. Hun voornaamste bezigheid was de heiligverklaring van Colette te bekomen.
Haast allemaal afkomstig uit het bisdom Amiens kozen de nonnen voor het klooster van de Clarissen uit eigen keuze en uit roeping. Op het einde van de xvmde eeuw stelt Juffrouw de Louvencourt een altijddurende verering van het Heilig Sacrement in, met de hulp van monseigneur de la Motte, en richt, in het gedeelte voor de externen, een hospitaal in voor de ongeneeslijken.
Third-party facilitation of supply chain linkages: evidence from the Armenian vegetable industry
Authors: Shanoyan A. , Ross R.B. , Gow H.R. , Peterson H.C. , Black R. 
Published: May 2016

Abstract
This paper presents an empirical examination of investment responses to external facilitation of supply chain linkages between agricultural producers and processors. Specifically, it analyzes the impact of participation in the USDA Marketing Assistance Program (MAP) facilitated formal marketing channel on farm-level investments in tomato production. The analysis involves mixed method approach utilizing a case of the USDA MAP in the Armenian vegetable industry and the survey data from 427 Armenian tomato growers. The main results indicate that the tomato growers linked to USDA MAP facilitated formal marketing channel (i.e. processors) invested significantly more in expanding tomato planting area compared to growers in informal channel (i.e. direct-to-consumer markets, middleman, and barter). The lessons from the USDA MAP’s supply chain facilitation strategy and the results of quantitative analysis provide insights on incentive structures and enforcement mechanisms for designing more effective supply chain linkages.
Assessing the reliability of microscopy and rapid diagnostic tests in malaria diagnosis in areas with varying parasite density among older children and adult patients in Nigeria
Authors: Ayogu EE , Ukwe CV , Nna EO 
Published: May 2016

Background:
Current malaria control strategies are based on early diagnosis and appropriate treatment of malaria cases. The study aimed at comparing the performance of blood film microscopy and rapid diagnostic test (RDT) in Plasmodium falciparum detection in patients ≥6 years of age.

Materials and Methods:
A total of 154 consecutive pyretic patients aged 6-62 years were enrolled, sampled, and tested for malaria using RDT (first response) and microscopy by Giemsa staining. Genomic DNA was extracted after saponin hemolysis and nested polymerase chain reaction (PCR) was used to detect Plasmodium falciparum. The endpoints were sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV).

Results:
Of the 154 patients, 80 (51.9%) had fever of ≥37.5°C. 106 (68.8%) were positive by First response®, 132 (85.7%) by microscopy, and 121 (78.6%) by PCR. The sensitivity, specificity, PPV, and NPV of first response compared to microscopic method were 82.2%, 100.0%, 100.0%, and 34.3%, respectively, while it was 75.4%, 75.0%, 95.3%, and 31.2%, respectively, when compared to PCR. The sensitivity, specificity, PPV, and NPV of the microscopic method compared to PCR were 92.3%, 50.0%, 90.91%, and 54.5%, respectively. There was a significant difference in the performance of RDT and film microscopy methods (P ≤ 0.05).

Conclusion:
Microscopy performed better and is more reliable than first response (RDT) in areas with low parasite density among patients ≥6 years of age. Rapid diagnostic tests could be useful in aareas with high parasite density as an alternative to smear microscopy
Accessing completeness of pregnancy, delivery, and death registration by Accredited Social Health Activists [ASHA] in an innovative mHealth project in the tribal areas of Gujarat
Authors: Modi D , Patel J , Desai S , Shah P 
Published: May 2016

Background:
The Innovative Mobile-phone Technology for Community Health Operation (ImTeCHO) is a mobile-phone application that helps Accredited Social Health Activists (ASHAs) in complete registration through the strategies employed during implementation that is linking ASHAs’ incentives to digital records, regular feedback, onsite data entry, and demand generation among beneficiaries.

Objective:
To determine the proportion of pregnancies, deliveries, and infant deaths (events) being registered through the ImTeCHO application against actual number of events in a random sample of villages.

Materials and Methods:
Five representative villages were randomly selected from the ImTeCHO project area in the tribal areas of Gujarat, India to obtain the required sample of 98 recently delivered women. A household survey was done in the entire villages to enumerate each family and create a line-listing of events since January 2014; the line-listing was compared with list of women registered through the ImTeCHO application. The proportion of events being registered through the ImTeCHO application was compared against the actual number of events to find sensitivity of the ImTeCHO application.

Result:
A total of 844 families were found during household enumeration. Out of actual line-listing of pregnancies (N = 39), deliveries (N = 102), and infant deaths (N = 5) found during household enumeration, 38 (97.43%), 101 (99.01%), and 5 (100%) were registered by ASHAs through the ImTeCHO application.

Conclusion:
The use of mobile-phone technology and strategies applied during the ImTeCHO implementation should be upscaled to supplement efforts to improve the completeness of registration.
Mixed method approach for determining factors associated with late presentation to HIV/AIDS care in southern India
Authors: Yadav UN , Chandrasekharan V , Guddattu V , Gruiskens JRJH 
Published: May 2016

Background:
Early diagnosis and treatment of human Immunodeficiency virus (HIV) is not only beneficial for the people living with HIV/acquired immunodeficiency syndrome (AIDS) (PLHA) but for the public and society as well. The study was aimed to identify the factors associated with late presentation to HIV/AIDS care.

Materials and Methods:
A facility-based unmatched case-control (1:1) study along with in-depth qualitative assessment was conducted at an ART Plus center at a district hospital, Udupi, southern India. A sample of 320 HIV patients (160 cases and 160 controls) was selected randomly between February and July 2014. Information regarding the patients were collected using an interviewer-administered semi-structured questionnaire. The qualitative component was assessed by in-depth interviews of 4 health professionals and 12 HIV-positive patients who were late for HIV care. The quantitative data were analyzed using Statistical Package for the Social Sciences (SPSS) version 15.0. The technique of thematic analysis was adopted for the analysis of qualitative data.

Results:
HIV-positive individuals who lived with families [odds ratio (OR) = 5.11], the patients having non-AIDS comorbidities [OR= 2.19, 95% confidence interval (CI): 1.09-4.40], the patients who perceived fear of losing family [OR = 5.00, 95% CI: 2.17-11.49], the patients who perceived fear that their status will be ruined in the community [OR= 2.00, 95% CI: 1.01-3.97], the patients who perceived fear of side effects of ART medications [OR = 4.3, 95% CI: 2.65-11.33], the patients who perceived fear of losing confidentiality [OR = 4.94, 95% CI: 2.54-9.59], the patients those who lack information available on government services [OR = 4.12, 95% CI: 2.127-8.005], and the patients who consumed alcohol [OR= 3.52, 95% CI: 1.83-6.77] were found to be independently associated with the late presentation to HIV/AIDS care after adjusting for all known confounders in a multivariable analysis. The qualitative summary showed that the perceived HIV stigma, inadequate health education, lack of awareness on available government services, psychological problems, alcohol use, asymptomatic conditions, and financial problems are major barriers to access care early for the late presenters.

Conclusion:
The identified factors can be utilized for the formulation of policies and interventions by promoting early diagnoses and addressing special concerns such as stigma, disclosure, health education, and awareness.
Mitochondrial control region diversity in Polish sheep breeds
Authors: Koseniuk Anna , Słota Ewa 
Published: May 2016

Abstract. The aim of the study was to determine the genetic variability of the Polish sheep breeds Świniarka, Wrzosówka, Pomorska, and Wielkopolska based on mitochondrial control region polymorphism. A comprehensive phylogenetic analysis and information about the genetic origin of the breeds were also obtained. The genetic variability of the breeds studied has been assessed based on the number of haplotypes, haplotype diversity, nucleotide diversity, the average number of nucleotide differences, the number of mutations, and phylogenetically informative sites. Sequence divergence between identified haplogroup A (HA) and haplogroup B (HB) was also calculated. Moreover, a neighbour-joining (NJ) haplotype tree was constructed based on Kimura's two-parameter genetic distance calculation. Finally, the history of the population was investigated by mismatch distribution and Fu's F statistics. The 559 bp long mitochondrial DNA (mtDNA) control region (CR) sequences of 143 sheep were analysed. The 65 haplotypes were defined by 45 parsimony informative sites. Among the four Polish breeds, Wrzosówka had the highest while Świniarka the lowest values of haplotype (Hd) and sequence diversity (π) (Hd =  0.9735 and π =  0.0040 for Wrzosówka; Hd =  0.8975 and π =  0.0030 for Świniarka). Five haplotypes were shared between breeds, whereas the remaining 60 were unique. The NJ phylogenetic tree has revealed that 61 haplotypes of all analysed breeds clustered into clade B while the remaining 4 haplotypes representing all but the Świniarka breed pooled together with clade A. None of the other reported mitochondrial haplogroups were identified. The haplotypes representing HB formed a star-like network with the single central haplotype, which in association with extensive haplotype sharing reveals a weak structure of Polish breeds and the existence of gene flow between the breeds studied.
Impact of major volcanic eruptions on stratospheric water vapour
Authors: Löffler Michael , Brinkop Sabine , Jöckel Patrick 
Published: May 2016

Abstract. Volcanic eruptions can have a significant impact on the Earth's weather and climate system. Besides the subsequent tropospheric changes, the stratosphere is also influenced by large eruptions. Here changes in stratospheric water vapour after the two major volcanic eruptions of El Chichón in Mexico in 1982 and Mount Pinatubo on the Philippines in 1991 are investigated with chemistry–climate model simulations. This study is based on two simulations with specified dynamics of the European Centre for Medium-Range Weather Forecasts Hamburg – Modular Earth Submodel System (ECHAM/MESSy) Atmospheric Chemistry (EMAC) model, performed within the Earth System Chemistry integrated Modelling (ESCiMo) project, of which only one includes the long-wave volcanic forcing through prescribed aerosol optical properties. The results show a significant increase in stratospheric water vapour induced by the eruptions, resulting from increased heating rates and the subsequent changes in stratospheric and tropopause temperatures in the tropics. The tropical vertical advection and the South Asian summer monsoon are identified as sources for the additional water vapour in the stratosphere. Additionally, volcanic influences on tropospheric water vapour and El Niño–Southern Oscillation (ENSO) are evident, if the long-wave forcing is strong enough. Our results are corroborated by additional sensitivity simulations of the Mount Pinatubo period with reduced nudging and reduced volcanic aerosol extinction.
OCRA radiometric cloud fractions for GOME-2 on MetOp-A/B
Authors: Lutz Ronny , Loyola Diego , Gimeno García Sebastián , Romahn Fabian 
Published: May 2016

Abstract. This paper describes an approach for cloud parameter retrieval (radiometric cloud-fraction estimation) using the polarization measurements of the Global Ozone Monitoring Experiment-2 (GOME-2) onboard the MetOp-A/B satellites. The core component of the Optical Cloud Recognition Algorithm (OCRA) is the calculation of monthly cloud-free reflectances for a global grid (resolution of 0.2° in longitude and 0.2° in latitude) to derive radiometric cloud fractions. These cloud fractions will serve as a priori information for the retrieval of cloud-top height (CTH), cloud-top pressure (CTP), cloud-top albedo (CTA) and cloud optical thickness (COT) with the Retrieval Of Cloud Information using Neural Networks (ROCINN) algorithm. This approach is already being implemented operationally for the GOME/ERS-2 and SCIAMACHY/ENVISAT sensors and here we present version 3.0 of the OCRA algorithm applied to the GOME-2 sensors. Based on more than five years of GOME-2A data (April 2008 to June 2013), reflectances are calculated for  ≈  35 000 orbits. For each measurement a degradation correction as well as a viewing-angle-dependent and latitude-dependent correction is applied. In addition, an empirical correction scheme is introduced in order to remove the effect of oceanic sun glint. A comparison of the GOME-2A/B OCRA cloud fractions with colocated AVHRR (Advanced Very High Resolution Radiometer) geometrical cloud fractions shows a general good agreement with a mean difference of −0.15 ± 0.20. From an operational point of view, an advantage of the OCRA algorithm is its very fast computational time and its straightforward transferability to similar sensors like OMI (Ozone Monitoring Instrument), TROPOMI (TROPOspheric Monitoring Instrument) on Sentinel 5 Precursor, as well as Sentinel 4 and Sentinel 5. In conclusion, it is shown that a robust, accurate and fast radiometric cloud-fraction estimation for GOME-2 can be achieved with OCRA using polarization measurement devices (PMDs).
Tobacco consumption in adolescence: Age and regional trends - The Young HUNT Study, Norway (1995-2008)
Authors: Thoen Håvard , Holmen Turid Lingaas 
Published: May 2016

Background: The aim of this study was to describe the trends of smoking and snuff consumption in adolescents in Nord-Trøndelag, Norway, in the period from 1995/97 to 2006/08, with special emphasize on regional and gender differences.Method: We used data from all three waves of the Young-HUNT study, the youth part (ages 13-19 yrs) of the HUNT study, Nord- Trøndelag County, Norway. Young-HUNT 1 was conducted in 1995-97 (N=9131, 90% response rate), Young-HUNT 2 in 1999-2000 (N=2808, 80% response rate) and Young-HUNT 3 in 2006-08 (N=8601).Results: Fewer adolescents had tried smoking in Young-HUNT 3 (40.6%) compared to Young-HUNT 1 (56.5%), while the prevalence of adolescents who had tried snuff increased in the same period from 17.4% to 23.5%. The prevalence of adolescents who smoked daily or occasionally decreased between Young- HUNT 1 (girls 23.8%, boys 19.8%) and Young-HUNT 3 (girls: 14.6%, boys: 12.1%), while the prevalence of daily or occasionally snuffing increased (girls: 3.4% to 13.0% and boys: 20.2% to 23.1%). This constitutes a fourfold increase of the number of young female snuff users in little more than a decade. Occasional snuff use increased most in girls while daily snuff use increased most in boys. The same tendency was seen inn all regions, but the prevalence of tobacco use varied.Conclusion: The results demonstrate a shift from cigarette smoking to snuff use in the adolescent population between 1995 and 2008. Although a decrease in cigarette smoking occurred, the increasing snuff use makes the total tobacco consumption nearly constant
Investigating the Policy of International Trading Companies of Iran in Using Letters of Credit
Authors: Ghasemi Atefe , Mallahi Azita , Sadeghi Hadiseh , Hatamiasdabadi Mohammad Reza 
Published: May 2016

<p>Letters of credit play a crucial role in international trade. In this study, we investigate the most preferable characteristics of letters of credit for the international trading companies in Iran. We seek to investigate which kind of guarantee (commercial L/C or standby L/C) they prefer to secure the performance of their client's obligations. Studied companies were 20 international trading companies in Tehran, from which 50 experts were participated in our survey study. For measuring the participants and their policy in using letters of credit, a questionnaire in Persian was designed. For analyzing data we used statistical tests (One-sample t-test). Data showed that <em>being</em><em> a guarantee</em>, <em>integration</em>, <em>documentary conditions</em>, and <em>secondary payment mechanism </em>are four important reasons for international trading companies in Iran to use letters of credit in their contracts. Statistical results showed that “being a guaranteed credit” is the most important factor with a mean of 3.660 ± 1.135.Also, we found significant relationship between these four factors and the L/C usage policy (p &lt;0.01, and p&lt; 0.05). We concluded that they mostly prefer standby letters of credit for securing their transactions.</p>
Analysis of Prospects and Challenges of Sub-District Structures under Ghana’s Local Governance System
Authors: Forkuor David , Wusu Adjei Prince Osei 
Published: May 2016

<p>The research investigated into the operations and activities of the sub-district structures of local government in Ghana. Three districts in the Asante Region were studied using a cross-sectional study design. Data were collected from both primary and secondary sources. In addition to literature review, a sample size of 79 was used and responses from mainly the Chairmen of the sub-district structures represented the primary data. Data were analysed using both quantitative and qualitative techniques. Results from the analysis indicated that sub-district structures are confronted with a number of constraints that militate against the realization of their potential for inducing grassroots development. The constraints include: poor or no office accommodation, lack of commitment from district assemblies and sub-metropolitan units to provide the needed assistance to the sub-district structures. However, the Unit Committees representing the last tier of the local government structure are more effective and efficient in keeping touch with the grassroots than the Town, Area, Zonal and Urban councils. Recommendations are made to the Local Government Ministry but worthy of note among the recommendations are the urgent need to officially inaugurate all sub-district structures that have not been inaugurated and initiate a process to review the Legislative Instrument establishing Sub-district structures in Ghana.</p>