bluuebunny/crossref_metadata_2025_split huggingface dataset:
Can Strain Imaging Predict Left Ventricle Remodeling? A Study from Eastern India
Authors: Agarwal Rakesh , Dutta Soumya Kanti , Baid Rashmi , Sinha Dhurjati Prasad 
Published: February 2021

Background:
Even persistently patent infarct-related artery has been shown to be associated with left ventricle (LV) remodeling. The purpose of this study was to evaluate the role of LV strain imaging by echocardiography in predicting LV remodeling in patients undergoing coronary revascularization.

Materials and Methods:
A total of 104 patients between the ages of 18 and 75 years of age undergoing percutaneous transluminal coronary angioplasty (PTCA) for acute coronary syndrome (ACS) were selected and subsequently followed up for 3 months. Echocardiography was obtained before PTCA and subsequently 3 months later with global longitudinal strain (GLS) measurements.

Results:
In our study, 24% patients studied developed LV remodeling at 1 month even after clinical, angiographic, and procedural success of percutaneous intervention. A value of LV GLS <−10.8 predicted the development of LV remodeling with 80% sensitivity and 86% specificity with lower values having higher specificity.

Conclusions:
GLS assessment by echocardiography in the acute setting is feasible and easy to do with no complications and may be used with considerable sensitivity in predicting patients with adverse remodeling after ACSs.
Haematology and serum biochemistry of broiler chickens offered extracts of dried Roselle plant (Hibiscus sabdariffa) calyx in drinking water
Authors: Asaniyan E.K. , Akinduro V.O. 
Published: February 2021

The challenge of antibiotics resistance and the fatality of its residues in human and animal health led to the ban of antibiotic growth promoters in animal diets. This has prompted the search for alternatives; especially through phytobiotic investigations. Therefore, this study investigated the effects of aqueous dried calyx extract of roselle plant on the haematological and serum biochemical responses of broiler chickens with the aim of establishing its optimal level as nutrient additive. The five varying concentration levels- 0, 5, 10, 20 and 30 ml of 2 litres of calyx extract solution per litre of drinking water were treatments T1, T2, T3, T4 and T5 respectively. Thirty broiler chickens were randomly assigned per treatment of three replicates each. The experiment lasted for eight weeks. The results revealed significant differences in the haematological parameters. However, the values of white 3 3 blood cells (WBC) (11400.00×10 /µl - 13466.67×10 /µl), lymphocyte (ranged between 48.33 and 61.33%), monocytes (2.00-3.67%), eosinophils (1.67-5.00%) and basophil (0.00 – 1.00%) were within the normal range for healthy chickens. Hence, roselle plant aqueous extract maintained the haematological content of the blood. The level of lymphocyte revealed adequate production of antibodies that prevented the occurrence of bacterial infection or allergic condition throughout experimental period. The influence of aqueous roselle plant on the levels of aspartate transaminase (AST) and albumin (ALB) indicated uncompromised liver function. Therefore, haematological and serum biochemistry parameters showed enhanced health and the wellbeing of the broiler chickens. The 5 ml and 10 ml levels of the extract of dried roselle calyx in drinking water were found to be similarly optimal in terms of lymphocyte levels. Levels above 10 ml could be detrimental to the health andwellbeing of the chickens.
Key words: Blood constituents, Chicken health, Drinking water, Roselle calyx extract
Low temperature grain-scale retrograde alteration of detrital minerals in Ajali formation from Benin Flank Of Anambra Basin, Nigeria
Authors: Adetunji A. , Alao-Daniel A.B. 
Published: February 2021

Petrographical study of detrital and authigenic minerals from the Ajali Formation in the Benin flank of Anambra Basin was carried out with the aim of interpreting the textural characteristics and alteration patterns. Samples were collected from Ayowgiri sand quarry site and along Fugar-Agenebode road where good exposures of the Ajali Sandstone occurred. Heavy minerals were concentrated using bromoform according to standard procedures. The heavy mineral concentrates were mounted on glass slides with araldite glue. In addition, thin sections of sandstone were prepared. The samples were studied with the aid of polarizing microscopes. The textural features and relationships among the heavy minerals were used in the interpretations. The results indicate that the detrital heavy minerals (Fe-Ti oxides and garnet) have undergone a very low-temperatureretrograde changes rather than ordinary in-situ dissolution by weathering and burial diagenesis. The alteration of Fe-Ti oxides resulted into the formation of leucoxene and chlorite while that of garnet resulted only into the formation of chlorite. Detrital magnetite was partially dissolved with skeletal remains while the authigenic grains showed well preserved structures. The re-equilibration of these minerals and partial dissolution were probably due to rise in temperature and change in the chemistry of the formation water. Reducing and acidic conditions at elevated temperature probably favoured dissolution and alteration of the detrital Fe-oxides while the formation of authigenic hematite was aided by oxidizing condition. Temperature increase was probably induced by either underneath thin lithospheric plate or igneous activities at the center of the basin. The conversion of the detrital minerals to authigenic chlorite and partial replacement structures represent a typical case of retrograde reaction which could be described as evidence of a very low-temperature anchi-metamorphism at mineral grain level.
Key words: Authigenic, chlorite, Fe-oxides, garnet, retrograde, anchi-metamorphism.
Evaluation of different aqueous plant extracts against rice blast disease fungus (Magnaporthe oryzae)
Authors: Agbowuro G.O. , Aluko M. , Salami A.E. , Awoyemi S.O. 
Published: February 2021

The antifungal potentials of some medicinal plant leaf extracts have been established against fungal diseases. This research work was conducted to evaluate the effects of aqueous plant leaf extracts of five plants: Apple of Sodom (Calotropis procera), Neem tree (Azadirachta indica), Thorn Apple/Angel's trumpet (Datura metel), Aleo plant (Aleo vera) and Siam weed (Chromolaena odorata)) at different concentration (25, 50, and 100%) against rice blast disease (Magnaporthe oryzae) in-vitro and in-vivo. The research work was laid out in a split-split plot arrangement using a randomized complete block design with three replications. Data were collected for disease severity, disease incidence, number of tillers per plant, number of filled grains, the weight of 1000 grains, and panicle weight. The data collected were analyzed using IRRI STAR software (IRRI, 1979). Percentage inhibition was significantly higher at higher concentrations for all the aqueous plant extracts as compared to lower concentrations. The field trial result shows that there were significant differences among all the studied traits though at different levels for all the sources of variation. The leaf plant aqueous extracts at all the varied concentrations reduced the rate of disease severity and incidence while the number of tillers per plant, the number of filled grains, the weight of 1000 seeds, and panicle weight increased compared to control. The result revealed that Apple of Sodom (Calotropis procera) is the most efficient in combating rice blast disease followed by Neem tree (Azadirachta indica), Thorn Apple/Angel's trumpet (Datura metel), Aleo plant (Aleo vera), and Siam weed (Chromolaena odorata) in that other. These aqueous plant extracts can be used to manage rice blast disease at a low cost and it is ecofriendly compare to chemical fungicides.
Keywords: Disease severity, Magnaporthe oryzae, Medicinal plants, Plant extracts, Rice
Haematology, serum biochemistry and condition factor of the African snakehead fish, Parachanna obscura from Nigeria’s hydrologic areas
Authors: Osho F.E. , Omitoyin B.O. , Ajani E.K. 
Published: February 2021

Rapid change in the conservation status of Parachanna obscura from least concerned to endangered species raises concerns over the health of the natural populations of this stock in Nigeria. This study therefore investigated the haematology, serum biochemistry and condition factor of P. obscura from Nigeria's freshwater environment to assess their wellbeing. All eight hydologic areas in Nigeria were purposively selected while one river in each of the basins was randomly chosen for sampling of P. obscura. These randomly selected rivers were from Anambra (Niger South), Imo (Eastern south) , Ibbi (Upper Benue), Kaduna (Niger Central), Katsina Ala (Lower Benue), Hadejia (Lake Chad), Ogun (Western Littoral) , and Sokoto (Niger North) rivers. Fish samples were collected quaterly for a year from fishermen's catch. One-way ANOVA and Duncan's Multiple Range Test were employed for data analysis. Percentage parked cell volume, lymphocytes, neutrophil and monocytes as well as haemoglobin and red blood cells were not significantly different (p>0.05) across populations. However, other haematologic parameters differed significantly among the populations. Samples from river Ibbi had significantly higher levels of glucose (47.75±3.22 mg/dL), aspartate aminotransferase (42.25±2.72 U/L), alanine aminotransferase (33.25±2.14 U/L) and blood urea nitrogen (1.91±0.31 mg/dL). Condition factors averaged 0.81±0.01. The present study showed that measured haematologic and serum biochemistry parameters as well as the condition factor were within normal reference values for P. obscura or similar tropical fish species reference values. Therefore, other causes of the decline in population of this species in Nigeria should be investigated.
Keywords: Parachanna obscura, Nigeria's freshwater environment, Population decline, Endangered tropical fish species.
Effect of starter culture fermentation of milk on the production, sensory attributes and storage of Wara (a Nigerian unripened soft cheese)
Authors: Ajibola W.G. , Adeyemo S.M. , Omafuvbe B.O. 
Published: February 2021

This study investigated the effect of Lactobacillus plantarum and Lactobacillus acidophilus isolated from wara, a Nigerian unripened soft cheese, on the production of starter-mediated type with improved quality and longer shelf-life. Fresh cow milk was pasteurized and inoculated with standardized cells of Lactobacillus plantarum and o Lactobacillus acidophilus (singly and in combination) and incubated at 30 C for 24 h to ferment. The fermented (acidified) milk was then used to produce wara using juice extract of Calotropis procera as rennet. Viable cell counts and physicochemical properties were estimated in the fermenting milk, while organoleptic attributes of traditional and starter-mediated wara were determined following standard procedures. The wara samples were stored at 30±2 °C for 6 days during which samples were obtained daily for physicochemical and microbiological analysis. Overall, physicochemical analysis of the fermenting milk samples showed a gradual drop in pH, increase in total titratable acidity and diacetyl level with accompanied increase in viable count. Organoleptically, there was no significant difference (p> 0.05) between the traditional and some of the starter-mediated wara. During storage, the starter mediated wara had the lowest bacteria count and extended shelf-life.
Keywords: Wara, Starter culture, Shelf life, Sensory attributes, Fermentation.
Defining and measuring portfolio diversification
Authors: Flint E. , Seymour A. , Chikurunhe F. 
Published: February 2021

It is often said that diversification is the only ‘free lunch’ available to investors; meaning that a properly diversified portfolio reduces total risk without necessarily sacrificing expected return. However, achieving true diversification is easier said than done, especially when we do not fully know what we mean when we are talking about diversification. While the qualitative purpose of diversification is well known, a satisfactory quantitative definition of portfolio diversification remains elusive. In this research, we summarise a wide range of diversification measures, focusing our efforts on those most commonly used in practice. We categorise each measure based on which portfolio aspect it focuses on: cardinality, weights, returns, risk or higher moments. We then apply these measures to a range of South African equity indices, thus giving a diagnostic review of historical local equity diversification and, perhaps more importantly, providing a description of the investable opportunity set available tofund managers in this space. Finally, we introduce the idea of diversification profiles. These regimedependent profiles give a much richer description of portfolio diversification than their single-value counterparts and also allow one to manage diversification proactively based on one’s view of future market conditions.
Keywords: Portfolio diversification; index concentration; weight-based diversification; risk-based diversification; correlation; covariance; market regimes
A stochastic investment model for actuarial use in South Africa
Authors: Şahin Y.Ş. , Levitan S 
Published: February 2021

In this paper, we propose a stochastic investment model for actuarial use in South Africa by modelling price inflation rates, share dividends, long-term and short-term interest rates for the period 1960–2018 and inflation-linked bonds for the period 2000–2018. Possible bi-directional relations between the economic series have been considered, the parameters and their confidence intervals have been estimated recursively to examine their stability, and the model validation has been tested. The model is designed to provide long-term forecasts that should find application in long-term modelling for institutions such as pension funds and life insurance companies in South Africa
Keywords: Stochastic investment models; price inflation; share dividend yields; share dividends; share prices; long-term interest rates; short-term interest rates; inflation-linked bonds; South Africa
Sustaining the life insurance industry in the Fourth Industrial Revolution
Authors: Molloy Lynne , Ronnie Linda 
Published: February 2021

As the Fourth Industrial Revolution (4IR) continues to change the ways of doing business across industries, organisations around the world are grappling with the unprecedented challenges imposed by radical and widespread technological change. In the face of this dilemma, the South African life insurance industry has remained remarkably resilient, exhibiting very little adaptation in terms of structural, cultural, or business model innovation. However, the stable environmental conditions that once enabled this position for incumbent organisations are weakening. Transformational change, like that in the adjacent financial services industry, is imminent and adaptation on the part of incumbent insurers will be vital to sustaining relevance. This research examines the organisational beliefs and capabilities of South African insurance companies regarding the 4IR in order to gauge the current challenges within the broader industry. Semi-structured interviews were conducted with 12 senior leaders and decisionmakers from across the industry. A qualitative inductive analysis shows the inhibitors and enablers of digital innovation within the organisations. The pervasive lack of trust, agility, and urgency within the sector are cited as inhibitors of digital innovation. Enablers include a continuous learning mindset within the organisation, partnerships within the broader ecosystem, and the role of senior leaders for shaping cultural attitudes and structures. Overall, these findings show a disparity between what insurers know they must do to proactively lead change, enact digital innovation, and remain relevant, and what they are actually executing. Recommendations are provided for addressing this gap.
Keywords: Fourth Industrial Revolution; life insurance; strategy; leadership; agility
PENGARUH SISTEM INFORMASI AKUNTANSI PERSEDIAAN TERHADAP PENGENDALIAN INTERNAL PERSEDIAAN PADA PT TRIJATI PRIMULA
Authors: Yulientinah Dewi Selviani , Siregar Siti Aminah 
Published: February 2021

Informasi merupakan hal yang sangat penting bagi perusahaan dalam mengelola perusahaan, menjalankan operasional perusahaan dan sebagai alat mengambil sebuah keputusan. PT. Trijati Primula merupakan perusahaan yang ditunjuk resmi oleh PT. Chitose International Tbk sebagai distributor resmi produk Chitose. Fenomena yang sering terjadi pada perusahaan distributor adalah hal yang tak terduga terjadi pada saat pengiriman seperti kecelakaan serta hujan deras yang mengakibatkan barang rusak. Oleh karena itu sebuah perusahaan distributor perlu pengendalian internal yang maksimal. Penelitian ini bertujuan untuk mengetahui pengaruh Sistem Informasi Akuntansi Persediaan Barang terhadap Pengendalian Internal Persediaan di PT Trijati Primula. Metode yang dipakai adalah metode kuantitatif dengan analisis asosiatif. Sistem informasi akuntansi persediaan memiliki hubungan yang kuat terhadap pengendalian internal persediaan dan memiliki pengaruh sebesar 88,9%. Kesimpulannya adalah sistem informasi akuntansi persediaan berpengaruh signitifikan terhadap pengendalian internal persediaan pada PT Trijati Primula.
Ứng dụng công nghệ “giỏ xi măng” ngăn cách nước nhằm cải thiện hiệu quả khai thác dầu tại đối tượng móng nứt nẻ mỏ Nam Rồng - Đồi Mồi
Authors: Ho Nam Chung  , Phi Manh Tung  , Dang Xuan Thuy  , Dinh Duc Huy  
Published: February 2021

Các mỏ dầu lớn ở bể Cửu Long chủ yếu đang trong giai đoạn sụt giảm sản lượng với hệ số suy giảm lớn và độ ngập nước tăng nhanh. Các nghiên cứu cải thiện thu hồi (IOR) đang là hướng nghiên cứu chính tập trung nhằm cải thiện hiệu quả và tối ưu khai thác cho đối tượng móng nứt nẻ (đóng góp 1/3 sản lượng dầu đang khai thác trong nước).
Bài báo giới thiệu công nghệ ngăn cách nước bằng “giỏ xi măng” đã triển khai thành công tại mỏ Nam Rồng - Đồi Mồi và có thể áp dụng cho các giếng khác có điều kiện địa chất/động thái tương tự nhằm cải thiện hiệu quả khai thác.
Nghiên cứu, xây dựng phát triển các mô hình phân chia sản phẩm tại các mỏ kết nối của Vietsovpetro
Authors: Tran Le Phuong  , Le Dang Tam  , Chu Van Luong  , Pham Thanh Vinh  , Nguyen Vi Hung  , Tong Canh Son  , Nguyen Viet Văn  , Do Duong Phuong Thao  , A.G. Axmadev  , Chau Nhat Bang  , Nguyen Huu Nhan  , Doan Tien Lu  , Tran Thi Thanh Huyen  , Le Thi Doan Trang  , Bui Mai Thanh Tu  
Published: February 2021

Kết nối mỏ là giải pháp tận dụng cơ sở hạ tầng vật chất hiện hữu của các mỏ lớn để kết nối, phát triển các mỏ nhỏ, mỏ cận biên. Phương thức này cho phép gia tăng hiệu quả kinh tế các mỏ có trữ lượng trung bình và nhỏ, mở ra triển vọng phát triển và đưa các mỏ dầu nhỏ, hạn chế về trữ lượng vào khai thác sớm.
Quá trình kết nối mỏ có thách thức khác nhau về mặt kỹ thuật và kinh tế, khả năng kết nối, thu gom, mức độ cải hoán hệ thống công nghệ để tiếp nhận, phân chia sản phẩm… Đối với trường hợp kết nối các mỏ vào hệ thống công nghệ thuộc chủ sở hữu khác, vấn đề phân chia sản phẩm có ý nghĩa quan trọng liên quan đến lợi ích trực tiếp của các chủ đầu tư.
Bài báo phân tích các mô hình phân chia sản phẩm của Liên doanh Việt - Nga “Vietsovpetro” đang áp dụng cho các mỏ kết nối, đánh giá khả năng cập nhật/nâng cấp các phần mềm mô phỏng có độ tin cậy cao, cho phép đánh giá nhanh về mặt kỹ thuật sự thay đổi của lưu lượng chất lưu trong hệ thống khi qua các quá trình xử lý công nghệ.
Nghiên cứu, hoàn thiện hệ hóa phẩm xử lý nhiễm bẩn vô cơ vùng cận đáy giếng trong vỉa cát kết nhằm nâng cao hiệu quả khai thác dầu
Authors: Le Van Cong  , Pham Ngoc Son  , Do Thanh Trung  , Nguyen Van Ngo  , Nguyen Quoc Dung  
Published: February 2021

Công nghệ sử dụng hóa phẩm để xử lý vùng cận đáy giếng giúp loại bỏ nhiễm bẩn vô cơ là giải pháp hữu hiệu để phục hồi năng suất giếng, nâng cao hiệu quả khai thác. Tuy nhiên vào giai đoạn khai thác cuối của mỏ, xuất hiện sự suy giảm áp suất vỉa, gia tăng hàm lượng nước trong dòng dầu khai thác và biến đổi tính chất dầu thô... nên các hệ hóa phẩm cần được nghiên cứu, hoàn thiện.
Bài báo trình bày kết quả nghiên cứu hoàn thiện hệ hóa phẩm xử lý vùng cận đáy cho đối tượng cát kết tại mỏ Bạch Hổ và mỏ Rồng với mục đích tối ưu thành phần các acid trong hệ hóa phẩm, nghiên cứu bổ sung phụ gia để nâng cao hiệu quả phòng ngừa kết tủa thứ cấp và phụ gia để cải thiện tính tương hợp của hệ hóa phẩm với lưu thể vỉa.
PENGARUH K3 (KESELAMATAN DAN KESEHATAN KERJA), FASILITAS, DAN MOTIVASI TERHADAP KINERJA KARYAWAN PADA PT. KALI JAYA PUTRA SIDOARJO
Authors: Fathoni Rodli  
Published: February 2021

K3 (Keselamatan dan Kesehatan kerja) merupakan hal yang penting bagi perusahaan, karena dampak kecelakaan dan penyakit kerja tidak hanya merugikan karyawan, tetapi juga perusahaan baik secara langsung maupun tidak langsung. Keselamatan kerja berarti proses merencanakan dan mengendalikan situasi yang berpotensi menimbulkan kecelakaan kerja melalui persiapan prosedur operasi standar yang menjadi acuan dalam bekerja. dari hasil uji F di peroleh Fhitung sebesar 15.306 yang nilainya lebih besar dari Ftabel sebesar 0.1168 yang berarti menyatakan bahwa variabel k3, fasilitas dan motivasi secara bersama – sama mempunyai pengaruh signifikan terhadap variabel kinerja karyawan pada PT. Kali jaya putra. dari uji t untuk mengetahui pengaruh parsial di peroleh thitung untuk masing – masing varibel yaitu variabel k3 sebesar 1.586, variabel fasilitas sebesar 2.961, dan variabel motivasi sebesar 2,240, yang nilainya lebih besar dari ttabel sebesar 1.660 yang berarti menyatakan bahwa variabel yang nilainya lebih besar dari ttabel sebesar 1.660 yang berarti menyatakan bahwa variabel fasilitas dan motivasi secara sendiri – sendiri (parsial) mempunyai pengaruh terhadap kinerja karyawan, sedangkan untuk variabel K3(keselamatan dan kesehatan kerja) secara sendiri – sendiri (parsial) tidak mempunyai pengaruh terhadap kinerja karyawan pada PT. Kali jaya putra. besarnya koefisien regresi untuk variabel k3 sebesar 0.173 variabel fasilitas sebesar 0.226 dan variabel motivasi sebesar 0.275, sehingga dapat disimpulkan bahwa variabel motivasi mempunyai pengaruh paling dominan terhadap kinerja karyawan pada PT. Kali jaya putra.
Fidyah Yuli Ernawati
Authors: Ernawati Fidyah Yuli , Rochmah Siti , Kusnianto Besar 
Published: February 2021

Tujuan dari penelitian ini adalah untuk mengetahui pengaruh Budaya organisasi dan Komitmen Organisasi secara parsial atau simultan terhadap Semangat Kerja Karyawan di kantor PDAM Tirta Kajen Kabupaten Pekalongan. Populasi dan sampel yang digunakan dalam penelitian ini adalah karyawan PDAM Tirta Kajen Kabupaten Pekalongan dengan jumlah 71 karyawan. Metode yang digunakan dalam penelitian ini adalah Analisi Regresi Berganda .
Hasil penelitian menunjukan bahwa Budaya Organisasiberpengaruh positif signifikan terhadap Semangat Kerja Karyawan di kantor PDAM Tirta kajen kabupaten Pekalongan, Komitmen organisasi berpengaruh positif signifikan terhadap Semangat Kerja Karyawan di kantor PDAM Tirta kajen kabupaten Pekalongan