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Research Article
Behaviour of Geometrically Nonlinear Columns: Towards an Accurate Structural Design of Columns Made Using Hot Rolled-Open Steel Section
Abstract
PDF
Full-Text
e-Pub
Geometrically nonlinear columns have been used for a variety of reasons in buildings, and their use has
become even more prevalent in our time. Much research has been carried out regarding columns and
arches, but geometrically nonlinear columns have not been extensively covered. Thus, this paper sheds
a light on the behaviour of nonlinear columns when subjected to loading. For that purpose, two different
cases of geometrical nonlinearities were considered. These columns were modelled using a validated
Finite Element (FE) model. Each of the columns was loaded up to the buckling load and the displacement
was recorded. Length of the column, the included angle (i.e., shallowness or span/reach ratio) and
boundary conditions were taken as variables and the behaviour of columns noted each .....
Research Article
Laboratory Investigations on CementKiln-Dust Stabilized Soils for Rural Road Pavement Construction in Eastern Nigeria
The construction of rural roads in Nigeria has been a great challenge over the years with
the situation giving serious concerns to the stakeholders. Many factors have been adduced
to the poor conditions of the rural roads which include lack of fund, lack of political will of
the government to tackle it, poor soil materials and construction methodology. Rural roads
network form about 65% of the estimated 200,000km total road network in the country [1]
and they form the major access through which the rural dwellers communicate with the urban
centres. The rural areas are the agricultural base for most agricultural products, and they
service the industries in the cities with the raw materials especially the agricultural-based
industries. There have been concerted efforts by government .....
Opinion
Scientific Basis for the Development of Promising Directions of Geological Exploration in Order to Strengthen the Mineral and Raw Material Base of East Kazakhstan Region
Dyachkov BA, Mizernaya MA, Zimanovskaya NA, Kuzmina ON and Bissatova AY*
The beginning of the XXI century was marked by a sharp increase in fundamental
geological research in order to create a modern scientific base for further development
of the mineral and raw material sector of the world economy. Mineral resources are still
the basis of the economies of many countries, but at present there is a tendency for their
depletion as a result of intensive development of known deposits. East Kazakhstan is a unique
geological site, which contains numerous deposits of copper, lead, zinc, gold, rare metals and
lands. The basis of the mining and industrial complex is represented by non-ferrous metals
obtained during the development of pyrite-polymetallic deposits of Rudny Altai (Cu, Pb, Zn,
Au, Ag, etc.). However, the fund of easily discovered deposits has alread.....
Research Article
Mechanistic Biomarker Estimation in Kidney, Lungs, and Artery after Treatment with the Biofield Energy Healing Based Test Formulation in Vitamin D3 Deficiency Diet (VDD) Induced Animal Model
Mahendra Kumar Trivedi, Alice Branton, Dahryn Trivedi and Snehasis Jana*
DOI: 10.31031/AMMS.2019.02.000543
This present study evaluated the impact of Consciousness Energy Healing/Blessing Treatment (the Trivedi
Effect®) on a novel test formulation in male Sprague Dawley (SD) rats, fed with Vitamin D3
Deficiency
Diet (VDD) for the estimation of mechanistic biomarkers such as endothelin-1 and nitric oxide (NO) in
kidney, lungs, and artery tissues. A novel proprietary test formulation was formulated including minerals
(magnesium, zinc, copper, calcium, selenium, and iron), vitamins (ascorbic acid, pyridoxine HCl, alpha
tocopherol, cyanocobalamin, and cholecalciferol), Panax ginseng extract, β-carotene, and cannabidiol
isolate. The novel test formulation was divided into two parts; one part was defined as untreated test
formulation, while the other of test formulation and three group of .....
Review Article
A Review of Aneurysmal Subarachnoid Hemorrhage Managed in Abuja, North-Central Nigeria
Ugwuanyi CU*, Anigbo AA, Nwaribe EE, Ayogu OM, Okpata CI, Salawu MM, Solanke O and Jamgbadi SS
DOI: 10.31031/TNN.2021.04.000581
Presentation of aneurysmal subarachnoid hemorrhage is often dramatic, and the management is even
more challenging especially in a resource poor setting. There is therefore not a lot of local experience
in the contemporary management of this inherently fatal form of stroke. This article shares our local
experience in managing this condition in a resource constrained environment.
Aims and objectives: To report a four years’ experience in managing aneurysmal subarachnoid
hemorrhage in Abuja, North Central Nigeria.
Methodology: Retrospective review of all cases that presented with CT confirmed aneurysmal
subarachnoid hemorrhage from Jan 2016 to Jan 2020. Those with typical history of SAH, but unable to
conduct these investigations were excluded. The biodata, clinical process, managem.....
Opinion
Effect of Thermal Treatments in Content of Some Heavy Metal Elements in Common Carp “Cyprinus Carpio”
DOI: 10.31031/NRS.2021.07.000656
Heavy metals enter the environment as a result of both natural and anthropogenic activities.
Anthropogenic sources comprise all contribution made by mankind including industrial
processes that contribute to atmospheric land depositions, mining and metallurgy, urban and
industrial wastes along with sewage and fertilizer applications. Uncontrolled manufacturing
and disposal of metals containing materials inevitably cause environmental pollution.
Recently, it is well realized that anthropogenic sources are the greater environmental threat as
a result of surface inputs to bio systems making the metal accessible for plant/animal uptake.
Heavy metals elements are the most dangerous pollutants of the aquatic environmental, as
they are widely used in various industries which discharges its.....
Opinion
The Functionality of Chemo-surveillance Dictates the Success of Wound Healing as Well as Cancer Therapy
Ming C Liau* and Linda Liau Baker
DOI: 10.31031/NRS.2021.07.000657
Chemo-surveillance was a natural defense mechanism against cancer brought up by
Liau et al. [1] to describe the ability of healthy people to produce metabolites to prevent
the evolution of cancer. It turns out that the functionality of chemo-surveillance is really an
important mechanism to dictate the success of wound healing as well as cancer therapy,
because metabolites involved in chemo-surveillance are the metabolites involved in wound
healing [2]. Wound healing and the evolution of cancer are closely related to involve Progenitor
Stem Cells (PSCs) as the critical common element [3,4]. Therefore, the primary objective
of chemo-surveillance is to ensure the success of wound healing. Human body produces
metabolites active as Differentiation Inducers (DIs) and Differentiation Help.....
Mini Review
Titanium Porous Plates for ElectrolyzerSeries Production
DOI: 10.31031/NRS.2021.07.000658
The discussion of renewable energy goes on, and Electrolyzers come more and more
an important issue in this renewable world. Electrolyzers cells are basically galvanic cells
converting chemical energy directly into electrical energy. Depending on the specific technology,
this reaction may take place at elevated temperatures, thus technical requirements for
materials and components of the stack become more and more challenging [1]. Porous titanium
(sintered titanium, titanium foam) is widely used in many fields, such as pharmaceutical
industry, water treatment industry, food industry, biological engineering, chemical industry
purification, petrochemical industry, metallurgical industry and gas processing etc. Porous
titanium can also be used as Gas Diffusion Layer (PDL) in new gener.....
Review Article
Presentation of Covid 19 Patients with and without Diabetes
DOI: 10.31031/NRS.2021.07.000659
The presence of diabetes mellitus is one of the critical risk factors for covid 19. In this study, laboratory
values and outcomes of symptoms of diabetic and non-diabetic patients were compared retrospectively.
One hundred ten patients (90 nondiabetics, 20 diabetics) were included in the study. The mean age was
higher in the diabetic group (64 vs. 53 years) (p=0.02). Only dyspnea was higher in the diabetic group (50
vs 25%) (p=0.008). In the comparison of basal laboratory values, the number of leukocyte neutrophils,
platelets, and lymphocytes was higher in the diabetic group (p<0.05). The decrease in hemoglobin and
lymphocyte counts were found to be higher in the diabetic group in the follow-up of the laboratory values
performed every two days (p<0.05). The length of stay in the int.....
Research Article
Early Phenophases in Some Common Tree Species and Provenances in Western Norway During the Period 1964-2014 as Related to Mean January-April Temperatures, and Consequences of the Related Climate Change
DOI: 10.31031/NRS.2021.07.000660
The IPG garden at Fana (02) near Bergen, Norway was established in 1958, and during the years 1958-75
woody trees and shrubs of 26 species and provenances from all over Europe were transplanted to the site,
2 or 3 replicates of each. For comparison meteorological records of temperature and precipitation were
collected from a nearby meteorological station. The mean January-April temperature at Fana increased
from about 1.5 to 3.0 C during the observation period 1964-2014. Consequently, a significant trend
against earlier budbreak was found during the period in the investigated species, and this change was
closely correlated with increased temperature. The shift against earlier budbreak during the sample
period was found to be 15-35 days depending on species and provenance, and the.....
Research Article
Evaluating the Role of Climate Smart Agriculture towards Sustainable Livelihoods in Mutare District, Zimbabwe
DOI: 10.31031/SBB.2020.04.000597
Increasing climate variability continues to threaten livelihoods in Southern Africa where
communities face the challenges of addressing context specific complexities associated with rainfed agriculture. Zimbabwe is equally vulnerable but the country is going through a transformation
in agriculture through the implementation of climate smart agriculture practices that endeavour
to enhance adaptation, resilience and increase productivity. The study was undertaken in Mutare
district, Zimbabwe with the aim of exploring the role of climate smart agriculture practices that
are applied to construct sustainable livelihoods. The study employed a triangulation and validation
of quantitative and qualitative data collection techniques that involved household surveys and key
informant interviews.....
Research Article
Wrist Circumference in Relation to the Risk of Metabolic Syndrome in Middle-Aged and Elderly Chinese Patients with Type 2 Diabetes
DOI: 10.31031/CJMI.2021.05.000603
Objective: In this study, we aimed to determine whether wrist circumference is associated with increased
with of metabolic syndrome (MetS) among middle-aged and elderly Chinese type 2 diabetes (T2DM)
subjects.
Method: A total of 470 type 2 diabetes hospitalized patients were included in the study. Data on
demographic characteristics, anthropometry and variables were collected. Serum lipid profile, HbA1c,
and beta-cell function were detected in blood samples. The diagnosis of MetS was ascertained by the
International Diabetes Federation (IDF) criteria. Results: The mean of wrist circumference in male and
female patients were 15.5 and 17.0cm, respectively. Weight, body mass index, waist circumference,
triglycerides and incident MetS gradually increased with the increment of wrist cir.....
Mini Review
Samarium (III) Extraction
Sid Ahmed Elhabiri and Mohamed Amine Didi*
The liquid-liquid extraction of samarium (III) from aqueous nitrate solution using D2EHPA (di-2-ethylhexyl
phosphoric acid) as extractants is investigated to recover samarium (III) from aqueous solution. The effect
of operating parameters, such as time, nitrate ion, aqueous phase acidity, concentration of the extractant,
temperature on the samarium extraction. At pH=5.05, maximum extraction efficiency was obtained with
2 mmol L-1 D2EHPA in dichloromethane at initial concentration of Sm3+ 1 mmol L-1. D2EHPA extracts
Sm3+ very rapidly. Equilibrium was reached within 15 min. The synergistic effect showed that addition
of D2EHPA to TOP (Tri-iso-octyl-phosphate) extraction was obtained for the volume ratio 4.5/0.5. The
thermodynamic functions like free energy (∆G), enthalpy (∆H) and .....
Research Article
Shaft Crack Damage Fault Detection Using Induction Machine Electrical Signature Analysis
Ratni Azeddine* and Benazzouz Djamel
Cracks in shafts have long been identified as factor limiting the safe and reliable operation of gearbox,
they sometimes result in disastrous failure of equipment (tooth,.) and, more often, in costly process,
upsets, repairs and replacement of equipment. This paper represents the utilization of dynamic model of
a simple stage gearbox (with and without defects) and the Hilbert Transform Demodulation in the early
detection and condition monitoring of shaft crack fault. Then, the vibration signal is analyzed using the
proposed approach. The used approach is compatible for such diagnosis and gives valuable information
about crack effects defect presence. The obtained results of early detection of shaft crack fault using the instantaneous phase are represented in this paper
Research Article
Critical Review on the Influence of Project Manager to Improve the Performance of the Construction Projects
Mohammed Elhaj Alsoufi Mohammed Ahmed and Leong Sing Wong*
The construction industry is often criticized for its poor performance. The traditional procurement
system, the structure of the industry and the nature of the construction product all influence current
practices and thinking. Project management has organization and operational level, and it mainly focuses
on the operational dimension rather than organizational level. In this critical review is done on the role of
project management in the organization dimension in terms of Influence, Power, Politics, and Leadership
Research Article
Behaviour of Geometrically Nonlinear Columns: Towards an Accurate Structural Design of Columns Made Using Hot Rolled-Open Steel Section
Geometrically nonlinear columns have been used for a variety of reasons in buildings, and their use has
become even more prevalent in our time. Much research has been carried out regarding columns and
arches, but geometrically nonlinear columns have not been extensively covered. Thus, this paper sheds
a light on the behaviour of nonlinear columns when subjected to loading. For that purpose, two different
cases of geometrical nonlinearities were considered. These columns were modelled using a validated
Finite Element (FE) model. Each of the columns was loaded up to the buckling load and the displacement
was recorded. Length of the column, the included angle (i.e., shallowness or span/reach ratio) and
boundary conditions were taken as variables and the behaviour of columns noted each .....
Short Communication
Zinc Oxide Nanostructured Material for Sensor Application
KRS Murthy, Raghu G K and Prakash Binnal*
DOI: 10.31031/COJRR.2021.03.000554
In the present project work, efforts have been made to synthesize non noble metal oxide-based
nanostructures (ZnO) through hydrothermal method using green chemical plant extract as a reducing
agent. The synthesized metal oxide was characterized using various spectroscopic techniques like UVVis, FTIR, XRD, and also electrochemical techniques. Further, the well characterized nanoparticles have
been used in the fabrication of thin film electrode on the surface of rigid glassy carbon electrode through
simple drop casting method. Finally, the developed sensor electrode was used in the electrochemical sensing of Dopamine as a model system at trace concentration level
Mini Review
Critical Biogeography of Neotropical Mountains: A Panoptic Approach for Biocultural Microrefugia Conservation
The development of Montology as the convergent science of mountains requires paradigm shifts. One
such about-face of ecological theory relates to terminology usage in biodiversity conservation; the trend
is identified with new understandings about biocultural diversity, driven by both intangible heritage
maintained in the tropical Andes, and the remains of monumental architecture recently discovered as
tangible heritage of mountain cultures that lived in the Andean Amazonian flank. My position is to allow
noetic science and critical toponymy to influence our understanding of biocultural diversity conservation
needs, and to respond to new decolonial scholarship that puts critical biogeography and political ecology
as explanatory of the ecological legacy shown in contemporary, sentien.....
Mini Review
Vacuum Treatment of Metal in the Process of Continuous Casting
DOI: 10.31031/EME.2021.03.000563
One of the promising areas of liquid steel processing is the development of metal
vacuum treatment in the stream during continuous casting (flow vacuum treatment). Several
technological schemes of such processes have been developed, however, in practice, the only
variant of the process has been implemented at the conditions of converter shop No-2 of
Novo-Lipetzk Metallurgical Combine (NLMC) (Figure 1). The technology of flow vacuuming
is based on the theoretical works of Professor G A Sokolov [1]. A steel ladle with a special
jointing element covering the slide valve is installed on the supports of the CCM, then the
hydraulic cylinder is attached to slide valve and the compressed air is given to assembling
device.Then the slide valve is opened and vacuum chamber with the help of hy.....
Review Article
Agrarian Population’s Occupational Health Risks and After Effects
Ajay Pal Natt*, Ramanjit Kaur, Amandeep Singh and Paramvir Singh
DOI: 10.31031/EPMR.2021.03.000559
Agriculture is the prime occupation in India and many other developing countries. In the modern era,
agricultural workers are confronted with many hazards include chemical hazards, biological hazards, ergonomic hazards, psychosocial hazards and physical hazards. Hence, the agriculture sector is associated
with a variety of occupational injuries and illnesses. Compared with some other industries, agricultural
workers are relatively facing higher risk of accidents than other workers. This sector of activity being
most unorganized, suffer from certain specific health hazards due to extensive use of fertilizers, insecticides and pesticides and mechanization [1]. The method used in this study was a review and analysis of
past data. The study classified the number and rate of occupational f.....
Mini Review
Is Rheology a Concern in GI Physiology?
DOI: 10.31031/EME.2021.03.000562
The small intestine is part of the gastrointestinal tract that interconnects the stomach
at one end to the large intestine at the other end. As the bolus containing meal traverses the
intestinal segments it undergoes rheological transformation as a consequence of digestive
processes such as alkaline buffering, micelle formation, absorption of nutrients and water [1].
As the chyme (mixture of meal and gastric juice) enters the stomach through the pylorus (a
valve interconnecting the stomach and the small intestine), the duodenum (first segment of
the small intestine) responds to the acidic content of the chyme by buffering them with alkaline
secretion of pancreas. Buffering action results in lowering the pH value of the contents, so the
meal can be processed for further breakdown. M.....
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