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Items from 61 to 80 out of 91,385 results

article

Identification of Rainbow Shrimp (Parapenaeopsis sculptilis (Heller, 1862)) Catch at Fish Auction Place (TPI) Minasari Pangandaran Regency, West Java, Indonesia

Via Anggania, Ujang Ujang Suherman2, Izza Mahdiana Apriliani

World Scientific News > 2023 > 178 > 101-114

This study aims to identify the catch of rainbow shrimp at the TPI Minasari Pangandaran, find out the fishermen and bidders at the TPI Minasari, and find out the gear used. The method used was the survey method and descriptive data analysis. The results showed that the total catch of rainbow shrimp (Parapenaeopsis sculptilis) from July 4 to August 2, 2022, was 71.5 kg. The decline in rainbow shrimp...

article

Parametric optimization of biodiesel from neem (Azadirachta indica A. Juss.) oil through defuzzification

Sumit Nandi, Shilpi Pall

World Scientific News > 2023 > 178 > 154-165

Crude neem (Azadirachta indica A. Juss.) oil (CNO) is one of the important oils used for the preparation of biodiesel. The main advantage of CNO is that it is non-edible and is obtained abundantly in nature from neem seed. The present work analysed the reaction parameters like molar ratio, catalyst concentration, mixing intensity and reaction time for optimum production of biodiesel experimentally...

article

Optimal Control Model of Human African Trypanosomiasis

Martins Onyekwelu Onuorah, Neoline Namwanje, Abdulahi Mohammed Baba

World Scientific News > 2023 > 178 > 136-153

In this paper, we formulated an optimal control model for the spread and control of human African Trypanosomiasis (HAT). Firstly, the ordinary differential equation model of HAT with basic properties and equilibrium states is presented. We used the method to obtain the all-important epidemiological threshold called the basic reproductive number. Three time-dependent controls representing personal...

article

In vivo comparison of small- and large-bore aspiration catheters in patients with ST elevation myocardial infarction

Katarzyna Pigoń, Maciej Pękała Pękała, Natalia Tomecka, Edyta Radzik, more

Annales Academiae Medicae Silesiensis > 2023 > 77 > 37–42

INTRODUCTION: Aspiration thrombectomy is recommended only in selected patients with ST elevation myocardial infarction (STEMI). Optical coherence tomography analysis revealed limitations of some aspiration catheters in thrombus removal. Additionally, in vitro tests show significant differences in their effectiveness depending on the design of the distal tip and their internal diameter. The aim of...

article

Retention of leaf senescence of aquatic angiosperms using IAA

Chandan Kumar Pati

World News of Natural Sciences > 2023 > 48 > 40-45

One of the plant growth promoters, IAA (Indole-3-acetic acid) on deferral of leaf senescence was analysed for plant species namely, Salvinia sp. and Jussiaea sp. Changes of some biochemical parameters like chlorophyll, protein, soluble and insoluble carbohydrates as well as activity of catalase enzyme were analysed as reliable senescence indices during detached leaf senescence. With the progress of...

article

Weed persistence, crop resistance and herbicide phytotonic effects in cowpea (Vigna unguiculata [L] Walp) under various weed control treatments in Kano, Nigeria

E. A. Shittu, M. S. Bassey

World News of Natural Sciences > 2023 > 48 > 60-69

The yield of cowpea (var. IT99K-573-1-1) was tested in a field experiment using 12 different weed control treatments during the wet seasons of 2019 and 2020. The results showed that hoe weeding at 3 and 6 WAS had the highest weed persistence index, crop resistance index, and agronomic management index, closely followed by pendimethalin 2.0 kg a.i.ha-1 fb SHW at 6 WAS, and metolachlor 2.0 kg a.i.ha-1...

article

Optimal Control Model for Hepatitis B Virus

Martins Onyekwelu Onuorah, Abdulahi Mohammed Baba, Nanangwe Alaisa, Robert Ssali Balagadde, more

World News of Natural Sciences > 2023 > 48 > 70-94

In this paper, we proposed an ordinary differential equation model for the transmission of Hepatitis B virus (BHV). The model accounted for the susceptible, exposed, infected, Chronic, and removed classes. We obtained the model's disease-free and endemic equilibrium points and the effective reproductive number. Further, from a thorough sensitivity analysis of the effective reproductive number, we...

article

Heavy Metal Concentration in Fields Used as Urban Waste Dump Site in Owerri, Imo State, South-Eastern Nigeria

Victoria Chioma Ayozie-Samuel, Callistus Nwigboji Uda, Chinedu Cletus Onyeanuforo

World News of Natural Sciences > 2023 > 48 > 46-59

The concentration of heavy metals in fields used as urban waste dump sites in Owerri, Imo state Nigeria was evaluated. Three dumpsites were selected from Avu (along Port Harcourt Road), Mechanic village (opposite Tipper Park) and Egbeada housing (along Onitsha Road). Site selection was based on the presence of the dumps for at least 10 years. Soil samples were collected from the dumpsites and 100...

article

Net cash flow from operating activities and liquidity of First Bank Niageria Plc

Emmanuel Benson, Joy Ochuole Odey

World Scientific News > 2022 > 168 > 1-15

The importance of the cash flow position to the financial performance of bank and other corporate entities have been emphasized by scholars, but with little venture into how bank funds management have affected liquidity. By the nature of banking firms as financial intermediaries, there is not downplaying of how cash flow can affect their liquidity. It is on the basis of this that this study set out...

article

The mesomorphic effect of –CH2-CH2- spacer on thiophene chalconyl ester containing compounds

Umed C. Bhoya, Mona B. Pithiya, Mukesh R. Dube, Kalpesh R. Kholiya

World Scientific News > 2022 > 169 > 183-201

A new thiophene ring containing chalconyl ester homologous series was synthesised with ethyl spacer to understand the effect of structural change on mesomorphism. This homologous series was compared with well reported similar homologous series to evaluate the liquid crystal properties after addition of ethyl spacer. This series contain 12 homologues. Among 12 homologues C10 to C16 homologues show...

article

Reformulating and Strengthening the Theoretical Foundations of Semi-structured Complex Numbers

Jean-Paul Peter, Wahid Shanaz

World Scientific News > 2022 > 169 > 152-182

Recently a new number p (called the unit unstructured number) was invented to solve “division by zero”. “p” was used to create a new number set called the semi-structured complex numbers and a new coordinate plane called the real-unstructured xz-plane. However, the definition of p led to a number set that had a poor theoretical foundation and lacked consistency in simple algebraic calculations producing...

article

Current trends in the treatment of sickle cell anemia

Waheed Sakariyau Adio, Francisca Chioma Christopher, Ridwan Olamilekan Adesola, Folorunso Ibikun Mary

World News of Natural Sciences > 2022 > 43 > 60-75

Sickle cell disease is a set of illnesses characterized by the misshaping and breakdown of red blood cells. Red blood cells twist into a sickle shape in sickle cell disease, an inherited set of illnesses. The cells die early, resulting in a lack of healthy red blood cells (sickle cell anemia), and they might impede blood flow, causing pain (sickle cell crisis). Vernon Mason coined the term "sickle...

article

Synthesis and antimicrobial activity of {2-amino/2-methoxy}-4-(2’-n-butyl-4’-chloro-1’-H-imidazol-5’-yl)-6-aryl nicotinonitriles

A. K. Joshi, N. M. Dodia, D. M. Purohit

World News of Natural Sciences > 2022 > 43 > 76-82

2-Amino-4-(2’-n-butyl-4’-chloro-1’-H-imidazol-5’-yl)-6-aryl nicotinonitriles. (2a-2j); 2-Methoxy-4-(2’-n-butyl-4’-chloro-1’-H-imidazol-5’-yl)-6-aryl nicotinonitriles. (3a-3j) have been synthesized. The products have been assayed for their antimicrobial activity against Gram +ve bacteria and Gram –ve bacteria and fungi. The products have been characterized by IR, 1HNMR, Mass Spectra and TLC.

article

Water quality index based on interrelation between plankton and benthos in Cimanuk River, Majalengka District, West Java, Indonesia

Achmad Rizal, Izza M. Apriliani, Lantun P. Dewanti

World Scientific News > 2022 > 168 > 81-98

Water quality can be known from the value of WQI (Water Quality Index), a number that describes water quality based on measurements of water quality parameters. Plankton is an organism whose life is free to hover in the water, its ability to move is limited so that water currents easily carry it away. Benthos is an organism that lives on the seabed or river attached to water sediments (mud or sand)...

article

Coronavirus: The Hidden Truth

Ridwan Olamilekan Adesola, Sakariyau Adio Waheed, Lukman Abodunrin

World News of Natural Sciences > 2022 > 43 > 38-59

Coronavirus is one of the most dangerous and contagious illnesses that arise from the introduction of host organisms into the biological system. As of March 2022, this sickness had caused more harm than good, with 479 million cases and 6.12 million deaths worldwide. These illnesses are unpredictable sources of social, financial, and economic distress. The rising incidence of infections is the most...

article

The Nexus Between Religious Extremism and Terrorism: The Nigerian Experience

Otonye Victor Sam-Ateki, Edmund Obomanu

World Scientific News > 2022 > 168 > 99-116

The issue of religious extremism in Nigeria has being on the rise over the years and consequently has resulted to several issues bordering to insecurity. This work looks critically into The Nexus between Religious Extremism and Terrorism: The Nigerian Experience. The problem this study confronts is the issue of terrorism in Nigeria which is basically caused by religious extremism as practiced by various...

article

Mosquito larvicidal and ovicidal properties of Pelargonium graveolens L. Herit. (Family: Geraniaceae) essential oil against three mosquito species

S. Dhanasekaran, C. Prabhahar, M. Baranitharan, G. Shanmugavel

World News of Natural Sciences > 2022 > 43 > 1-10

The use of botanicals as an alternative to the chemical compounds is gaining tremendous momentum because of its multifarious advantages. In view of its increasing interest, an attempt was made in the present study to assess the larvicidal and ovicidal potential of important plant like P. graveolens against three mosquito species. The third instar larvae were exposed to different concentrations (i...

article

Involvement of Free Radicals in the Ageing of Cutaneous Membrane

Babatunde Oluwafemi Adetuyi, Peace Funmilayo Adebayo, Peace Abiodun Olajide, Olusegun Oladimeji Atanda, more

World News of Natural Sciences > 2022 > 43 > 11-37

The free radical theory of aging suggests that aging is caused by accumulation of damage inflicted by reactive oxygen species (ROS). However, this concept has been very useful in defining the contribution of oxidative damage to the aging process, an increasing number of studies opposes it. The idea that oxidative damage represents only one of many causes of aging also has limitations, as it does not...

article

Hydrogen Storage in Metal Organic Frameworks

Peter K. Tanui, Jophine S. Namwetako, Hezekiah K. Cherop, Kapil M. Khanna

World Scientific News > 2022 > 169 > 121-135

Extensive research is being done to emphasize that hydrogen may be widely used as a clean alternative to hydrocarbon fuels in cars and different mobile applications. Microporous metal-organic frameworks have been recently developed as a few of the most promising materials since they have exceptionally high surface areas and chemically tunable structures. Studies are done to point out as to how the...

article

Multi-Response Optimization of Machining Parameters in Turning 6061 Aluminum Alloy Using Grey-Taguchi Approach

Yekini Bello, Shuaibu Octetengwu Yakubu, Thomas N. Guma, Abubakar S. Imam

World Scientific News > 2022 > 169 > 136-151

This study applies Taguchi’s design of experiment methodology and regression analysis for optimization of process parameters in turning 6061 aluminum alloy using uncoated carbide tool insert under coolant condition (formulated orange seed oil cutting fluid). Experiments for surface roughness and flank wear were conducted using an L16 orthogonal array design and process parameters such as spindle speed,...

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Search results

Identification of Rainbow Shrimp (Parapenaeopsis sculptilis (Heller, 1862)) Catch at Fish Auction Place (TPI) Minasari Pangandaran Regency, West Java, Indonesia

Parametric optimization of biodiesel from neem (Azadirachta indica A. Juss.) oil through defuzzification

Optimal Control Model of Human African Trypanosomiasis

In vivo comparison of small- and large-bore aspiration catheters in patients with ST elevation myocardial infarction

Retention of leaf senescence of aquatic angiosperms using IAA

Weed persistence, crop resistance and herbicide phytotonic effects in cowpea (Vigna unguiculata [L] Walp) under various weed control treatments in Kano, Nigeria

Optimal Control Model for Hepatitis B Virus

Heavy Metal Concentration in Fields Used as Urban Waste Dump Site in Owerri, Imo State, South-Eastern Nigeria

Net cash flow from operating activities and liquidity of First Bank Niageria Plc

The mesomorphic effect of –CH2-CH2- spacer on thiophene chalconyl ester containing compounds

Reformulating and Strengthening the Theoretical Foundations of Semi-structured Complex Numbers

Current trends in the treatment of sickle cell anemia

Synthesis and antimicrobial activity of {2-amino/2-methoxy}-4-(2’-n-butyl-4’-chloro-1’-H-imidazol-5’-yl)-6-aryl nicotinonitriles

Water quality index based on interrelation between plankton and benthos in Cimanuk River, Majalengka District, West Java, Indonesia

Coronavirus: The Hidden Truth

The Nexus Between Religious Extremism and Terrorism: The Nigerian Experience

Mosquito larvicidal and ovicidal properties of Pelargonium graveolens L. Herit. (Family: Geraniaceae) essential oil against three mosquito species

Involvement of Free Radicals in the Ageing of Cutaneous Membrane

Hydrogen Storage in Metal Organic Frameworks

Multi-Response Optimization of Machining Parameters in Turning 6061 Aluminum Alloy Using Grey-Taguchi Approach

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