bluuebunny/crossref_metadata_2025 huggingface dataset:
Wind power calculation based on sums of diffusion method and a novel power curve approximation model
Authors: Bandarathilake H. M. D. P. , Palamakumbura G. W. R. M. R
Published: June 2023

Wind energy estimations using wind speed models and power curve approximations are mandatory for the optimal regulation of wind electricity generation. A weak stationary process can be probabilistically modeled as a sum of several diffusion processes generated by a class of stochastic differential equations. In this study, a residual dataset obtained by eliminating the non-stationary component of a wind speed dataset recorded at Kokkilai in Northeastern Sri Lanka, has been considered as a weak stationary process. The correlogram of residual dataset is bounded by an exponentially decreasing theoretical autocorrelation function that includes several time scales. Hence the residual process is probabilistically approximated by three sums of diffusion models based on the infinite divisibility and the ρ-mixing property of the underlying distribution. By combining each approximated residual process and the non-stationary component of the dataset, three wind speed distributions were constructed. Then each distribution model was incorporated to calculate the average energy generated using the power curve data of the recommended wind turbine for the site using a novel power curve approximation model. Consequently, a comparative study was performed on energy calculation based on each model and the most appropriate model was selected and the feasibility of the recommended wind turbine was discussed.
Detection of preimaginal forms of dengue vectors from environmental samples in Jaffna city, northern Sri Lanka: an eDNA-based approach
Authors: Sivasingham Arthiyan , Tharsan A. , Eswaramohan T. , Raveendran S. , Surendran S. Noble
Published: June 2023

Vector surveillance is crucial for implementation of appropriate vector control strategies to reduce the transmission of vector-borne diseases such as dengue, a major public health concern in Sri Lanka. Aedes aegypti and Ae. albopictus are the primary and secondary vectors of dengue virus, respectively. Dengue is endemic in the Jaffna District and the presence of dengue vectors from many water bodies, including brackish water habitats, is reported. The use of environmental DNA (eDNA) has emerged as a novel tool to detect and identify vector species present in any aquatic environment. This study, used environmental DNA to determine the presence of major dengue vectors in different aquatic habitats in the Municipal limits of the Jaffna District. Potential pre-imaginal developmental sites of dengue vectors were identified in randomly selected 10 blocks consisting of at least 40 houses within the study location. One hundred and twenty water samples without any visible preimaginal forms were collected from these sites to extract eDNA. PCR assays were performed using species-specific primers designed for Ae. aegypti and Ae. albopictus. The presence of Ae. aegypti and Ae. albopictus was identified in 12 (10.0%) and 30 samples (25.0%), respectively. The presence of both species was detected in nine samples (7.5%). The salinity of the water from which Aedes DNA was detected ranged from 0–7 gL-1. The results revealed that eDNA is an indirect but valid surveillance tool for monitoring preimaginal developmental forms of mosquitos in the aquatic environment.
Bioethanol production from Chara globularis using yeast and yield improvement by optimization of conditions
Authors: Christy E. J. S. B. A. , Kapilan R. , Wickramasinghe I. , Wijesekara I.
Published: June 2023

The rising population, depletion of petroleum-based fossil fuel and atmospheric contaminations by combustion of fossil fuel have opened avenues for alternative, eco-friendly and renewable energy sources. Bioethanol is an alternative and renewable source that has drawn attention due environmental concerns and energy security with non-renewable sources. This study was aimed at determining the potential bioethanol producing freshwater flora that are abundantly available in the Northern Province of Sri Lanka using Saccharomyces cerevisiae and to optimize the fermentation conditions to enhance the ethanol yield from Chara globularis. Freshwater flora such as C. globularis, Cabomba caroliniana, Spirodela polyrhiza, Salvinia minima, Salvinia natans, Wolffia arrhiza and Wolffia globosa were hydrolysed with 1M sulfuric acid solution to determine the reducing sugar and bioethanol yields. C. globularis produced a higher amount of reducing sugar and bioethanol than other species tested. When C. globularis was pre-treated with 1 M acid solutions (sulfuric acid, nitric acid, and hydrochloric acid) and alkaline solutions (sodium hydroxide and potassium hydroxide), a higher reducing sugar and bioethanol yields were obtained with sulfuric acid. When bioethanol was produced from C. globularis using S. cerevisiae following three different hydrolysis methods viz., acid hydrolysis (1 M sulfuric acid), enzymatic hydrolysis (1% alphaamylase) and combination of chemical and enzymatic hydrolysis (1 M sulfuric acid and 1% alpha-amylase), the combination of chemical and enzymatic hydrolysis gave a higher yield, thus was selected. The conditions for fermentation of C. globularis substrate using S. cerevisiae were optimized sequentially by changing one factor at a time while keeping the other variables constant. After the optimization of fermentation time (24 hours), operating temperature (35 °C), rotation speed (200 rpm) and sulfuric acid concentration for combined pre-treatment (0.75 M) with an inoculum size of 100 g l-1, bioethanol yield was increased.
Oil palm industry in Sri Lanka: Its production potential and current status, and future prospects
Authors: Nissanka S. P.
Published: June 2023

No abstract available
Composite materials based on rice straw and natural rubber for thermal insulation applications
Authors: Dushyanthini B. , Perera V. P. S. , Rajendra J. C. N. , Karthikeyan N. , Senadeera G. K. R.
Published: June 2023

Thermal properties of composites fabricated with coalescence of two low thermal conducting materials, rice straw and natural latex were investigated. Composites constituting various weight content of oven-dried blended rice straw mixed with a constant volume of natural latex were fabricated with a surface area of 31 cm2 and their thermal properties were compared by pressurizing under a force of 5 tons. Hot Disk Thermal Constants Analyzer Transient Plane Source (TPS) 500S was used to measure the thermal properties such as thermal conductivity, volumetric specific heat capacity, and thermal diffusivity of the aforementioned composites. The lowest thermal conductivity was achieved for both the unpressurized and pressurized composites with 25% of the rice straw’s weight content, which was recorded as 0.0636 and 0.1526 Wm-1K-1 respectively. High Specific heat capacity and less thermal diffusivity were also seen in the pressurized samples with 25% of rice straw, whereas this behaviour was the opposite in the unpressurized sample. The effect of the applied pressure on the thermal properties of the composite is also studied and it was observed that the thermal conductivity increases up to 8 tons on 31 cm2 in the composite with increasing pressure and then decreases while it continues to increase in the sample made of rice straw alone. Since high specific heat and low thermal diffusivity are the desired features of a thermally insulating material other than the low thermal conductivity, this economical and eco-friendly composite pressurized up to a certain limit could be used by further processing with preservatives toward efficient energy management as a good material for thermal insulation of building applications.
Assessment of mortality rate in tuberculosis / human immunodeficiency virus (HIV) coinfected patient
Authors: Ojo A. E. , Ojo O. A. , Adebajo S. O. , Ajibola A. T. , Oloyede A. R. , Popoola H. A. , Babalola A. S. , Ojo D. A.
Published: June 2023

Prior to the discovery of Human Immunodeficiency Virus (HIV), the pattern of tuberculosis (TB) prevalence witnessed a gradual drawdown and the mode of presentation was usually pulmonary. This study assesses the mortality rates of TB and HIV co-infected patients in a directly observed therapy (DOT) centre in Nigeria. The retrospective study retrieved 18 months of data from 197 patients on the TB register of a centralized DOT centre in the Ogun State, Nigeria. Data collected included age, sex, and HIV status, with TB results obtained from Genexpert. The data obtained from 197 TB patients were analyzed using descriptive statistics and chi-square. Out of the 197 TB patients, 67.0% were males and 33.0% were females. A majority of the patients (41.6%) were within the age category of 43 years and above. This was followed by 35 – 42 years (25.4%) and 27 – 34 years (19.8%), while the lowest proportion of patients (0.5%) falls within the age brackets of 3 - 10 years. Furthermore, 92.9% of the patients were HIV negative. Using Chi-squared test, no significant difference was seen in TB occurrence to sex (p>0.05) while age contribute significantly to mortality. Co-infection of HIV/TB was 7.1% while mortality rate in this group was 28.6%. as observed in the age group 43 and above. Overall, the mortality rate in the TB patients was 2.0%. Results showed that the age was a significant contributor (p<0.05) to HIV TB co-infection among the patients. Age regressed positively with TB infection in the study population. The study concludes that the co-infection of TB and HIV was significantly associated with high mortality.
Co-existing with COVID-19: Engaging the community to strengthen the public health response in Sri Lanka
Authors: Weerasinghe M.C.
Published: June 2023

COVID-19 was declared as a pandemic by the World Health Organization in early March 2020. Sri Lanka until mid-May experienced an epidemic contained within 32 clusters, largely due to a well-planned public health response. Following 2 months of partial shut-down, certain control measures are being relaxed to facilitate economic activities across the country. This paper details this public health response and explores how it could be strengthened to empower the community to co-exist with COVID- 19 in a “new normal” environment.Reprinting from Journal of the Ceylon College of Physicians, 2020, 51, 8-13 http://doi.org/10.4038/jccp.v51i1.7880
Note from the Editor-in-Chief
Authors: Abeysekera Nalin
Published: June 2023

No abstract available
A pragmatic approach to the diagnosis of inborn errors of metabolism in developing countries
Authors: Anetor John I. , Orimadegun Bose E. , Anetor Gloria O.
Published: June 2023

Inborn errors of metabolism (IEM) are a group of genetically derived diseases that are individually rare but collectively common and can be very severe. While high-income countries usually employ modern scientific technologies like tandem mass spectrometry for IEM investigation, these disorders are, in contrast, only rarely screened for in developing countries due to misconceptions that the required facilities are beyond the reach of these countries. This paper attempts to educate scientists and clinicians in developing countries on low-technology IEM screening methods that only require moderate facilities. Although a definitive diagnosis of IEM may require specialised laboratory investigations and attendant interpretation, in most cases, the basic facilities available in the average clinical chemistry laboratory in developing countries can allow the early detection of IEM. This early detection would facilitate critical early decision making, thus leading to better management, optimised treatment, and reduced morbidity and or mortality of IEM in these resource-limited countries. With this approach, a few referral centres for confirmatory investigation, comparable to those existing in developed countries, could be established. This can be integrated into creative health education for healthcare professionals and families who have individuals with IEM.What this study adds: IEMs are important enough that every country, developed or developing, should have screening plans and basic laboratory facilities that are adequate for initial IEM diagnosis. No country should therefore give up on testing for IEMs on the excuse of a paucity of advanced facilities.
Corrigendum: Formulation of phage cocktails and evaluation of their interaction with antibiotics in inhibiting carbapenemase-producing Klebsiella pneumoniae in vitro in Kenya
Authors: Michodigni Noutin F. , Nyachieo Atunga , Akhwale Juliah K. , Magoma Gabriel , Ouédraogo Abdoul-Salam , Kimang’a Andrew N.
Published: June 2023

No abstract avilable.
Erratum: Transition from 3D conformal to modern modulated craniospinal radiotherapy
Authors: Fakira Hamida , Naiker Thurandrie , Smith Brendon , Groenewald Annemari
Published: June 2023

No abstract avalaible.
Bibliometric analysis on the applicability of anaerobic digestion in organic solid waste
Authors: Cavalcanti Ingrid Lélis Ricarte , Leite Valderi Duarte , Oliveira Roberto Alves de
Published: June 2023

Anaerobic biological treatment can comprise a viable route of CH4 production through the energy recovery of organic solid waste (OSW). This work therefore presented a bibliometric analysis of research trends on the theme "Applicability of biological treatment via Anaerobic Digestion in Organic Solid Waste", considering experimental articles published from 2018 to 2022 in the Web of Science database™;  the analysis used VoSviewer software to define research trends, and found that the main terms addressed in the mapped scientific articles were anaerobic, waste, sludge, waste food, municipal waste, anaerobic co-digestion, sewage sludge, organic fraction, co-digestion and biogas.  As a product of such mapping, an Interaction Network Diagram was constructed comprising the main terms in addition to a theoretical foundation on anaerobic digestion and biochemical and microbiological aspects about the process.

Keywords: anaerobic co-digestion, clean energy, food waste, microbial intercropping.
Normalized solutions of $L^2$-supercritical NLS equations on compact metric graphs
Authors: Chang Xiaojun , Jeanjean Louis , Soave Nicola
Published: June 2023

This paper is devoted to the existence of non-trivial bound states of prescribed mass for
the mass-supercritical nonlinear Schrödinger equation on compact metric graphs. The investigation
is based upon a min-max principle for some constrained functionals which combines the monotonicity
trick and second-order information on the Palais–Smale sequences, and upon the blow-up
analysis of bound states with prescribed mass and bounded Morse index.
Especialización, futuro del periodismo
Authors: Fernández Obregó Javier
Published: June 2023

Especializarse significa renunciar a lo general para dedicarse a lo particular. Al igual que la cultura de masas ha supuesto un enfrentamiento dialéctico entre apocalípticos e integrados, la especialización, es su aspecto más amplio, es objeto igualmente de posiciones distintas y, en algunos casos, antagónicos.
Expresión verbal en la comunicación mediática
Authors: Echevarría Mirta Clara
Published: June 2023

La formación del comunicador implica el desarrollo de la competencia lectora junto a la escritural. Capacitarse como receptor, para actuar como emisor, significa bucear en busca de los comportamientos sociales subyacentes en todo texto. En comunicación social, como en la vida cotidiana, cada vez que utilizamos nuestra palabra incluimos la palabra de otro/ de otros, dialogamos con ella.
Periódico electrónico proceso de producción y estrategias discursiva
Authors: Echevarría Mirta Clara
Published: June 2023

En relación con un conjunto textual dado, siempre existen dos lecturas posibles: la del proceso de producción (de generación) del discurso y la de la recepción de ese mismo discurso. Este trabajo encara el proceso de producción del periódico electrónico desde el punto de vista de las modalidades hipertextuales que dejan sus huellas en el texto. Estas huellas detectables ¿presentes en lo lingüístico, la imagen y el sonido- son algunas de las estrategias discursivas que, en el proceso de lectura, permiten construir el sentido de un texto.
توظيف الأدلة الجدلية في تقرير المسائل النحوية والصرفية ابن جني ت ٣٩٢ في كتابه الخصائص أنموذجا
Authors: د. تركية بنت عامر بن مطلق العميري د. تركية بنت عامر بن مطلق العميري
Published: June 2023

تقوم هذه الدراسة على تسليط الضوء على نوع من أنواع الأدلة النحوية وهي الأدلة آو الحجج الجدلية من خلال التعريف بها وبيان الفرق بينها وبين الأدلة العلمية المؤكدة
Challenges in Implementing Academic Accreditation in Higher Education in
Authors: Abdullah Nidal Addas Abdullah Nidal Addas
Published: June 2023

Higher education standards in Saudi Arabia are changing rapidly to align with the country’s 2030 vision. There is recognition of the importance of education and a clear focus on the quality of education in the objectives of the country’s National Transformation Programs which aim to realize that vision. In this regard, the Ministry of Education (MOE) advises universities to obtain both institutional
Making the Tunisian Resurgence
Authors: Mahmoud Sami Nabi Mahmoud Sami Nabi
Published: June 2023

The economies of the Arab countries are generally projected to have shown not much inclusive economic growth, especially since the second half of the twentieth century. Keeping in view the state of underdevelopment in their economies, several Arab countries had embarked on economic and financial reforms in collaboration with international financial institutions, such as the IMF and the World Bank, in order to overcome their economic difficulties. This book review article sheds light on how the Arab Spring of 2011 resulted in income and wealth inequalities, weak investments, and growing unemployment in Tunisia.
Volatility and Information Behavior:
A Study on Sharīʿah Index and General Index
Authors: Mohammad Imdadul Haque, Afsal Ellath Meethal Mohammad Imdadul Haque, Afsal Ellath Meethal
Published: June 2023

The fact that there is an increased demand for Sharīʿah-based financial products demands modeling the risk-return structures of such products for the benefits of investors, practitioners, and policymakers. This study attempts to discover the superiority of information and volatility patterns of Sharīʿah-based indices over the general index traded in the Malaysian stock exchange. The Vector Error Correction Model combined with EGARCH is administered to achieve the objectives of this study
Platform Capitalism – Boon or Bane to Society
Authors: Abdulkader Cassim Mahomedy Abdulkader Cassim Mahomedy
Published: June 2023

In this essay, the rise of platform capitalism and its claims to a utopian economic world is explored. Using the tawḥīdī worldview, I trace its emergence within the context of the growth of modern capitalism itself. The study reveals that there are certain core elements within the institutional framework of the modern economy that empowers capitalism to hegemonize society and its structures. In its drive
Big Data, Islamic Finance, and Sustainable Development Goals
Authors: Syed Nazim Ali Syed Nazim Ali
Published: June 2023

The adoption of the 2030 sustainable development goals (SDGs) by the UN member nations is of great importance. These goals seek to ensure that no single individual is left behind, and everyone is carried along. Key to achieving these goals is to ensure the availability of data and skills necessary for interpreting such data. Paucity of data is a major issue faced by several developing countries towards achieving the sustainable developing goals.
Are the Determinants of Credit Facilities of Islamic Banks different from Conventional Commercial Banks? An Omani Perspective
Authors: Mawih Kareem Al Ani Mawih Kareem Al Ani
Published: June 2023

This study aims to explore and understand whether the determinants of credit facilities are different in Islamic commercial banks as compared with conventional banks. Seven groups of determinants of granting credit facilities are tested in both types of Omani banks. The sample of the study comprises the credit managers of six conventional banks and six Islamic banks (including four Islamic windows) in Oman.
Financial Services After a Pandemic – Lessons from History
Authors: Natalie Schoon Natalie Schoon
Published: June 2023

At the time of publication of this article, we are in the middle of the second wave of the COVID-19 pandemic with increased restrictions on travel and sizes of meetings across the globe. At this point in time, we can only speculate what the impact of the pandemic will be on the global economy. Although history does not repeat itself, there are certain elements and trends that recur. This article contributes to the discussion forum of the journal through the consideration of what we can learn from past pandemics and how this can assist in forecasting what the likely effect will be on the global economy, in general, and the financial services industry in particular.
The World Economy and Islamic Economics in the Time of COVID-19: Few Remarks and Observations
Authors: Abdelkader Chachi Abdelkader Chachi
Published: June 2023

This paper is a critical response to the lead paper of the discussion forum entitled “The World Economy and Islamic Economics in the Time of COVID-19”, written by Benamraoui (2021). Benamraoui (2021) looked at the COVID-19 pandemic from the economic perspective. He pointed out that it has brought unprecedented challenges to the world economy, that have never been experienced before, including a sharp decline in economic output and substantial increase in the level of unemployment. He suggested that Islamic finance could provide solutions to reduce the impact of the pandemic. This paper argues that, it is true that COVID-19 has negatively affected the world economy in an unprecedented way. However, this is a global crisis like many other global crises that have battered the world before, and it will soon be over.
قراءة تقويميّة في بحث أنس الزرقا
Authors: النّفاتـي برهان بن الحبيب
Published: June 2023

هذا البحث قراءة فيما انتهى إليه محمد أنس الزرقا من صيغ معبّرة عن قاعدة يرى كونها حريّة بتفسير قوله تعالى ﴿...وَأَحَلَّ اللَّهُ الْبَيْعَ وَحَرَّمَ الرِّبَا...﴾ ] البقرة: 274[. تفسيرًا اقتصاديًّا.  فهو يرى أنّ الوقوف على المعنى المعقول الموجب لجواز الاسترباح في المعاوضات المولّدة لدينٍ كافٍ في تبين الفرق المعتبر بين المعاملتين المذكورتين في الآية. وقد بيّن هذا التعقيب ما ينقض عرى القاعدة المقترحة بانخرام شرط اطراد مناطها في جملة من الجزئيات، بل تهافت المنهج المعوّل عليه في المعالجة حتى في صورة التّسليم بصحّة مضمونها، وذلك أنّ موضوع أيّ قاعدة لا يكون إلا كلّيًا تندرج تحته جزئيّات متجانسة تتّحد في الحكم. فلا يمكن أن يشتمل على كلّيين ينتج كلّ منهما حكمًا مخالفًا لحكم الثّاني، لذا وجب صوغ قاعدتين مختلفتين تعبّر إحداهما عن المناط المقتضي لجواز الاسترباح في المُداينات، والثانية عن المعنى المؤثر في منع أخذ الربح في الرّبا دون إهمال اعتبار القطاع الخيري إبان الموازنة بينهما.
Age Determination and Growth Parameters of Lutjanus bohar
Authors: Mohamed H. Gabr Mohamed H. Gabr
Published: June 2023

Age-based life history parameters: the asymptotic length (L∞), the growth coefficient (K) and the hypothetical age at zero length (t0), for Lutjanus bohar in Jeddah fisheries were estimated. Scales were used for age determination and measurements,
Recommended Corrosion Test Methods for Commercial Vehicle Components
Authors:   Truck and Bus Total Vehicle Steering Committee
Published: June 2023

This document establishes recommended practices to validate acceptable corrosion performance of metallic components and assemblies used in medium truck, heavy truck, and bus and trailer applications. The focus of the document is methods of accelerated testing and evaluation of results. A variety of test procedures are provided that are appropriate for testing components at various locations on the vehicle. The procedures incorporate cyclic conditions including corrosive chemicals, drying, humidity, and abrasive exposure. These procedures are intended to be effective in evaluating a variety of corrosion mechanisms as listed in Table 1. Test duration may be adjusted to achieve any desired level of exposure. Aggravating conditions such as joint rotation, mechanical stress, and temperature extremes are also considered.

This document does not address the chemistry of corrosion or methods of corrosion prevention. For information in these areas, refer to SAE J447 or similar standard.
Filosofar sobre Dios: Fe y razón en Gregorio Nacianceno
Authors: García Guillén Domingo
Published: June 2023

Gregorio de Nacianzo, uno de los padres capadocios, es denominado por la tradición oriental como “el Teólogo”. Sin embargo, su faceta de filósofo es menos conocida y a menudo minusvalorada. Nos proponemos presentar cuál es el modo específico de filosofía que se encuentra en los discursos de Gregorio. Comenzaremos por examinar el primero de sus discursos teológicos, donde establece las condiciones en las que el ser humano puede hablar sobre la divinidad. En segundo lugar, examinaremos su dedicación a la literatura y la oratoria, para caracterizar su pensamiento como “filosofía retórica” o “retórica filosófica”. El tercer apartado nos llevará a la confrontación del Nacianceno con los nuevos arrianos de su tiempo, especialmente Aecio de Antioquía y Eunomio de Cízico. Rechaza el nominalismo de estos herejes y su abuso de los recursos de la lógica aristotélica, que denomina “tecnología”. Nuestro autor concede mayor importancia a la realidad de Dios que a las palabras que nombran lo divino. Por último, trataremos de resumir las relaciones entre razón y fe, siguiendo su conocida fórmula: “la fe es plenitud de la razón”.
Antioxidant Activity Test of Scrubbing Cream of Coffee (Coffea Arabica L.) Grounds Ethanol Extract Origin in Wamena, Papua
Authors: Gunawan Elsye , H. Wally Selviana , Lingga Irene S.
Published: June 2023

Background: Coffee grounds are residue from coffee powder that has been brewed. Coffee grounds contain substances that can act as antioxidants such as flavonoids and polyphenols. Objective: This study was to evaluate the physical quality of l scrubbing cream and to test the antioxidant activity of coffee powder extract in scrubbing cream. Methods: The scrubbing cream was made in three Formulas with an extract concentration of 0.05% (F1); 0.1% (F2); 0.5% (F3); positive control was vitamin C, and negative control was scrub base, and then each formula was repeated three times. Evaluation of physical preparation quality included organoleptic test, homogeneity, pH, spreading, and adherence. The antioxidant activity test was done using the DPPH method. Results: Based on the results of the physical quality test and antioxidant activity tests, showed that the three formulas by evaluating the organoleptic, homogeneity, pH, spreading, and adherence of the scrubbing cream preparations qualified the requirements for the semisolid preparation. Effects of antioxidant test shown by IC50 values of negative control, F1, F2, F3, and vitamin C respectively were 230.63 ppm, 172.90 ppm, 112.73 ppm, 84.93 ppm, and 6.74 ppm. Conclusion: F3 (0.5%) has antioxidant activities which are classified in the strong category with an IC50 value of 84.93 ppm. So that through this research it can be said that coffee grounds have the potential as antioxidants in food and cosmetic products.
Identification of Erosivity Potential on Tropical Zone Using Spatial Method
Authors: Supandi Supandi
Published: June 2023

As a geological process that wears away soil, rock, or dissolved material, erosion may result in the loss of soil layers that are rich in nutrients for plant growth and reducing soil ability to absorb and store water. High rainfall causes a high level of erosivity which can lead to the increase of erosion intensity. Therefore, in predicting erosion, rain condition needs to be considered the most, especially for the tropics. This study was conducted in Samboja District, East Kalimantan Province, Indonesia. The purpose of this study is to create zoning potential for erosion based on topographic correlation with land cover and support practices factors spatially in a map form. The uniform distribution of soil types allows the integration of the erodibility factor together with the erosivity factor. Several erosion equations suitable for tropical areas were used to estimate the erosion, using the BMKG rainfall data for the last 16 years (2006-2020). The results of the study are maps of erosion potential distribution at minimum, maximum, and average conditions. The change in the distribution of potential erosion from the minimum to the average occurred only at very limited points, and it was almost negligible. A significant change was found under condition of maximum erosion potential. The striking change in the zone of potential erosion under condition of the average to the maximum potential for erosion occurred in the zone from Class III to Class IV, and Class IV to Class V.
Evaluating the Groundwater and Surface Water Interaction in Southwest Iraq Using Environmental Isotopes Technique
Authors: Al-Naseri Saadi , Abdul-Razzaq Mohammed , Falih Ali
Published: June 2023

This study aims to use the environmental isotopes technique to evaluate the interaction between groundwater and surface water at a location between two cities in the southwest of Iraq; namely Al-Kifl and Al-Samawa. The salinity of the Euphrates River water increases sharply as it passes in this area, to a level that affects its usage for municipal purposes. A total of 111 samples were collected from the rivers, drainages, springs, shallow and deep wells, and from Sawa Lake, and all the samples were subjected to chemical (TDS, SO4, Cl, and B) and isotopic (deuterium and oxygen-18) analyses. The chemical and isotopic results showed no interference between the quality of the groundwater (from wells and springs) and Sawa Lake water with the Euphrates River water, in the study area, and hence, neither the groundwater nor Sawa Lake affects the river water quality. Statistically, the t-test analysis showed significant differences among those water samples (p-values less than 0.05 for almost all the chemical and isotopic parameters). On the other hand, drainage water showed a strong relationship to the river water, which indicates a high and strong influence of the drainage water on the river water quality when it mixes with the Euphrates River water.
Studying the Effect of Permeability Prediction on Reservoir History Matching by Using Artificial Intelligence and Flow Zone Indicator Methods
Authors: Abdul Hameed Mustafa , Hamd-Allah Sameera
Published: June 2023

The map of permeability distribution in the reservoirs is considered one of the most essential steps of the geologic model building due to its governing the fluid flow through the reservoir which makes it the most influential parameter on the history matching than other parameters. For that, it is the most petrophysical properties that are tuned during the history matching. Unfortunately, the prediction of the relationship between static petrophysics (porosity) and dynamic petrophysics (permeability) from conventional wells logs has a sophisticated problem to solve by conventional statistical methods for heterogeneous formations. For that, this paper examines the ability and performance of the artificial intelligence method in permeability prediction and compared its results with the flow zone indicator methods for a carbonate heterogeneous Iraqi formation. The methodology of the research can be Summarized by permeability was estimated by using two methods: Flow zone indicator and Artificial intelligence, two reservoir models are built, where the difference between them is in permeability method estimation, and the simulation run will be conducted on both of the models, and the permeability estimation methods will be examined by comparing their effect on the model history matching. The results showed that the model with permeability predicted by using artificial intelligence matched the observed data for different reservoir responses more accurately than the model with permeability predicted by the flow zone indicator method. That conclusion is represented by good matching between observed data and simulated results for all reservoir responses such for the artificial intelligence model than the flow zone indicator model.
Interpretation of Petrophysical Properties in Reservoir Rock Using Capillary Pressure Data of the Mishrif Formation in West Qurna Oilfield, Southern Iraq
Authors: Hendi Fatimah , Handhal Amna
Published: June 2023

In this study, capillary pressure tests for twenty-nine samples acquired from four wells, (Rn-83, WQ-155, WQ286, and WQ-355) were used to estimate pore size distribution, pore-throat sorting, displacement pressure, reservoir grade, oil column, effective porosity, and relative permeability of the Mishrif Formation at West Qurna Oilfield, southern Iraq. Interpretation of capillary pressure data revealed that the formation can be divided into four reservoir facies with different reservoir production performances: very good, good, medium, and poor. The facies with very good performance is characterized by large pore sizes, excellent reservoir grade, low displacement pressure, and high oil saturations. The good facies is characterized by the presence of good pore throat sorting, good reservoir grade, and good porosity. Contrary, Medium-performance reservoir facies are characterized by the presence of medium pore sizes, medium pore throat sorting, and medium reservoir grade. Poorly performing reservoir facies is characterized by small pore size, high displacement pressure, poor throat sorting, and high water saturation levels. Based on the relative permeability calculations some samples are wet with water (water-wet), while others are wet with oil (oil-wet).
Groundwater Risk Mapping Model Using GIS of Al-Khassa Upstream Sub-Basin, Kirkuk, Iraq
Authors: Al-Gburi Madyan , Al-Tamimi Omer
Published: June 2023

Groundwater pollution is considered a serious threat to the environment and humanity in general. The presence of contaminated groundwater in wells allows us to identify risks, especially in the study area. Therefore, studies must be conducted using modern techniques to determine risks. The objective of this study is to produce a map show zones of groundwater at risk. The groundwater risk maps based on the combination of two criteria are groundwater vulnerability and land uses/land covers map using GIS and QGIS software. In addition, validation work for groundwater risk map with heavy metals pollution index. The results risk map are range between 94-202 (very low, low, medium, high, and very high) i.e. five zones. The study area has very low - medium risk on the eastern and northeastern sides and some areas in the west; while the rest areas represent a high - very high risk.
Family Member Communication For Spastic Cerebral Palsy Parenting Literatur Review
Authors: Tambunan Resman Muharul , Lubis Djuara P. , Muljono Pudji , Puspitawati Herien
Published: June 2023

One of the problems with families of children with cerebral palsy is that they still need a lot of information systematically and scientifically through counseling to build the psychological function of the families of children with cerebral palsy. So that all family members can fully function to provide resilience in parenting children with cerebral palsy who help their children who have limitations. The method used in this study is a descriptive method, which is a study that aims to describe and explain something as it is, while the materials and methods used in this study use a literature review. From the results of several studies regarding the study of parenting Cerebral Palsy children, there was no explanation of the form of intervention for parents who cared for children with Cerebral Palsy. Interventions currently being carried out from psychological studies are positive parenting programs and special commitment therapy for parents of children with cerebral palsy. Positive parenting programs and special commitment therapy for parents of Cerebral Palsy from health communication studies with an emphasis on Parenting Resilience of Cerebral Palsy children with emotional intelligence interventions and social support through family members, community, therapy due to the demands of the role of caregiving. the scarcity of parenting resources for children compared to parenting by the closest family members of Cerebral Palsy children.
Systematic Review: The Impact Of Pandemic Post-Covid-19 On The Mental Health Of The Elderly
Authors: Muhammad Zambri  , Yulia Ayriza
Published: June 2023

This study aims to investigate how MSMEs in Cilacap capacity to compete and perfome well in the marketing arena are

The elderly are those who spend a lot of time at home to gather with their families and grandchildren, which is normal. This systematic review aims to look at the impact of the COVID-19 pandemic on the post-pandemic mental health of the elderly. based on research journal articles published from January 2022 to April 2022 on the elderly. Five research articles were obtained from three international publishers. The five journals were tested for due diligence using six PRISMA (Preferred Reporting Items for Systematic Review and Meta-analyses) assessment protocols which included abstracts and titles, introduction and objectives, methods and data, sample selection strategy, data analysis, and research findings. The results obtained based on a systematic study conducted in depth regarding the impact of Covid-19 on the health of the elderly are; (1) Psychological disorders, namely: anxiety, stress, overdose, and trauma. (2) Disorders of happiness, namely quality of life, perceptions of health and well-being (3) and Physical Disorders, namely functional disorders, dyspenia, and cognitive disorders. This finding represents the impact that the elderly have felt during the 4 months of the pandemic in 2022, even though it has been more than two years of the COVID-19 pandemic, the elderly are still feeling the negative impact of the pandemic. The third finding of the impact of the pandemic on the elderly can be used as reference material and a source of reference for in-depth research by linking variables that can increase positive emotions in individuals.
Inhibition of Barium Sulfat Crystal Formation in a Batch Method Crystallizer in the Presence of Cu and Zn
Authors: Karaman Novel , Giritama Wibowo Hendi , Aqil Ubaidillah , Jamari Jamari , Bayuseno A.P. , Suprianti Lilik
Published: June 2023

Deposits of barium sulfate are a common issue in the oil and gas industry. The presence of these crystals impacts oil and gas production, causing technical problems such as inhibiting flow rate, increasing pressure in the pipe, and causing the pipe to break and be damaged. The results of this study show the formation of barium sulfate (BaSO4) crystals with the batch crystallizer method at 300 °C under the influence of the stirring rotation speed (0 rpm, 120 rpm, 240 rpm, 360 rpm, 480 rpm) and the additive concentration (0 ppm, 5 ppm, 10 ppm, 15 ppm, 2atm). In this study, the BaSO4 crystallization experiment was performed in a glass beaker using a magnetic stirrer with a stirring rotation speed to react BaCL2 and Na2SO4. The results demonstrated that adding zinc chloride (ZnCl2) and copper (ii) chloride (CuCl2) additives reduced the mass of crystals formed. The amount of barium sulfate scale that forms can be affected by the rotational speed of the stirrer. According to SEM analysis, the crystal morphology of BaSO4 was orthorhombic, indicating that this crystal shape was typical of barite crystals. While XRD analysis confirmed the formation of barium sulfate (barite) crystals, it also demonstrated that the crystals formed were solid barite crystals.
The Impact Of Brand Awareness, Brand Reputation, And Perceived Economic Benefits On Brand Trust And Online Purchase Intentions For Skintific Products On The Tiktok Shop Platform
Authors: TiffaErsantika Alhamdina Tiffanda , Hartono Arif
Published: June 2023

This study aims to test and analyze the influence of brand awareness, brand reputation, perceived economic benefits on brand trust and online purchase intentions for Skintific products through the TikTok Shop platform. The research approach used is quantitative. Data collected by distributing online questionnaires via Google Form to 220 respondents. The sampling technique used convenience sampling method. The method used in this study is PLS-SEM, using the SmartPLS statistical software tool. Data analysis techniques used in this study are validity and reliability tests, collinearity tests, path coefficients, R-Square (R2), Q-Square, t-tests, and p-tests. The results of this study are brand awareness has a positive and significant effect on brand trust, brand awareness has no effect on online purchase intentions, brand reputation has a positive and significant effect on brand trust, brand trust has a positive and significant effect on online purchase intentions, perceived economic benefits have an effect positive and significant impact on brand trust, and perceived economic benefits have a positive and significant effect on online purchase intentions.
Recovery of Lung Function, Dominant Handgrip Strength, and Health-Related Quality of Life in Cardiac Surgical Patients Following Hospital Discharge
Authors: Mgbemna Nnamdi , Jones Anne , Saxena Pankaj , Ang Nicholas , Senthuran Siva , Leicht Anthony
Published: May 2023

Purpose: Assessment of recovery in post-cardiac surgical patients is commonly conducted using lung function, dominant handgrip strength (DHGS), and health-related quality of life (HRQoL). The aim of this study was to determine the recovery of lung function, DHGS and HRQoL in cardiac surgical patients at six-weeks and six-months after hospital discharge. Further, this study investigated the association between these parameters and the predictive ability of DHGS for lung function and HRQoL. Methods: This was a prospective observational study that involved 58 cardiac surgical patients who completed lung function, DHGS, and HRQoL assessments pre-operatively, at six-weeks, and six-months after hospital discharge. Lung function was assessed using three different calibrated spirometers, while DHGS was measured using three different calibrated handgrip dynamometers. The Short-Form 36 questionnaire was utilized for HRQoL assessment. Results: At six-weeks after hospital discharge, lung function and DHGS were significantly (pConclusion:Variable changes were identified in lung function, DHGS, and HRQoL in cardiac surgical patients at six-weeks and six-months after hospital discharge. Dominant hand grip strength may have limited or no value in predicting lung function and HRQoL in cardiac surgical patients during the intermediate recovery period.
Eco-friendly polymer succinate capping on silver nano-particles for enhanced stability: a UV-Vis and electrochemical particle impact study
Authors:   Oxford University, Department of Chemistry, Abbas Azhar , Amin Hatem M. A. ,   Oxford University, Department of Chemistry, Akhtar Muhammad ,   slamia University of Bahawalpur, Faculty of Pharmacy and Alternative Medicine, Hussain Muhammad A. ,   University of Sargodha, Department of Chemistry,, Batchelor-McAuley Christopher ,   Oxford University, Department of Chemistry, Compton Richard G. ,   Oxford University, Department of Chemistry
Published: June 2023

A facile green method is used to synthesize silver nanoparticles (Ag Nps) in one minute. The colloidal stability of two types of Ag Nps (namely, hydroxypropylcellulose-succinate (HPC-Suc) capped silver nanoparticles (Ag Nps@suc) and citrate-capped silver nanoparticles (Ag Nps@cit)) is investigated using UV-Vis spectrometry and electrochemical particle impacts “nano-impacts” measurements. Ag Nps@suc were newly synthesized by simply mixing aqueous solutions of HPC-Suc and silver nitrate and exposure to sunlight. The growth of Ag Nps was controlled by adjusting the exposure time to sun light. Local surface plasmon resonance (LSPR) study was conducted using UV-Vis spectrophotometer. The surface morphology, size, elemental analysis and composition of Ag NPs@suc was determined by SEM-EDX, while ATR-FTIR was used to assess any type of chemical reactions between the precursors. For stability and size distribution measurements zeta-potential (ZP), dynamic light scattering (DSL) and anodic particle coulometry (APC) were performed. The as-prepared Ag Nps@suc exhibited a narrow size distribution with an average diameter of 20 nm. Nps sizing using particles electrochemical impacts method is consistent with SEM and DLS techniques. The results show that Ag Nps@cit are prone to relatively rapid clustering upon addition of electrolyte (100 mM K2SO4). On the other hand, Ag Nps@suc exhibit excellent stability with only ~ 9% decay in absorbance over 24 h even at high electrolyte concentration. Using KCl, KBr and NaCl electrolytes, the stability of the synthesized Ag Nps@suc also compares favorably to Ag Nps@cit.
In vitro antimicrobial activity of „Carum carvi“ L. seed essential oil against pink potato spoilage flora
Authors:   Higher School of Food Industries of Tunisia, University of Carthage, Snoussi Ahmed , Koubaier Hayet Ben Haj ,   Higher School of Food Industries of Tunisia, University of Carthage, Bouacida Saoussen ,   Higher School of Food Industries of Tunisia, University of Carthage, Essaidi Ismahen ,   Higher Agronomic Institute of Chott Meriem, University of Sousse, Tunisia, Kachouri Faten ,   Higher School of Food Industries of Tunisia, University of Carthage, Bouzouita Nabiha ,   Higher School of Food Industries of Tunisia, University of Carthage
Published: June 2023

The objective of this research is to assess the ability of using Carum carvi L. seeds essential oil as a biological substance for controlling spoilage germs growth in potatoes during storage. The chemical composition of caraway seeds essential oil, analyzed by GC-MS and by gas chromatography with flame ionization detector (GC-FID), led to the identification of twelve compounds, where carvone was the main one with a percentage of 75.64 % of the total oil. The comparison of the microbial profiles of different potatoes samples showed the presence of the genus Citrobacter and three distinct fungi genera: Aspergillus, Phytophthora and Fusarium only for contaminated potato tubers with internal pink pigmentation. Thus, the antimicrobial activity of caraway seeds essential oil was studied against these strains. The antimicrobial activity of the oil against the isolated strains was evaluated through the agar diffusion method using different volumes (10, 20, 50 and 100 µl). All tested strains were inhibited by caraway seeds essential oil in a dose-dependent manner. The obtained results suggest the use of Carum carvi L. as a promising natural substance for the preservation of potatoes by contact vapor method.