scholarly journals ANALYSIS AND IMPACT OF LEAD-CONTAINING WASTE FROM LEAD PRODUCTION ON HUMAN LIFE AND THE ENVIRONMENT

REPORTS ◽  
2021 ◽  
Vol 2 (336) ◽  
pp. 99-104
Author(s):  
Z. Bagova ◽  
K. Zhantassov ◽  
G. Turebekova ◽  
B. Sapargaliyeva
Keyword(s):  
Human Life ◽  
Ferrous Metal ◽  
The Body ◽  
Toxic Waste ◽  
Toxic Heavy Metal ◽  
Metal Compounds ◽  
Zinc Compounds ◽  
Negative Effect ◽  
Lead Production ◽  
Scanning Electron

As a result of the activities of the lead plant, about 2 million tons of waste in the form of lead- containing slags were accumulated. Lead production slags contain a large number of toxic heavy metal compounds, such as lead, zinc, osmium, and cadmium, which are dangerous sources of environmental pollution. Due to the open storage of slags, there is an excess of the maximum permissible concentrations (MPC) of lead: near the plant, the concentration of lead is more than 3000 mg/kg in the soil, with a MPC of 3.2 mg/kg. Lead and zinc compounds are dangerous to humans due to their significant toxicity and ability to accumulate in the body. Lead poisoning ranks first among professional intoxications. Waste water containing zinc compounds is not suitable for irrigation of fields, the negative effect of zinc compounds on microorganisms and microfauna of the soil reduces its fertility. The article presents the results of scientific studies of lead slag, conducted by scanning electron microscopy and X-ray microanalysis, performed on a scanning electron microscope (SEM) JEOL-6490 LV (Manufacturer: JEOL, Japan). The results of the thermal analysis of samples on the derivatograph of the F. Paulik, J. Paulik and L. Erdey system in the air environment, in the temperature range of 20-1000°C. are presented. According to the results of research, it was found that lead slags contain a sufficiently high amount of non- ferrous metal compounds: lead oxide up to 0.7 % and zinc oxide up to 8.5 % of the weight amount of slag, which makes the process of recycling toxic waste from lead production technically and economically feasible.

scholarly journals DISPOSAL OF LEAD PRODUCTION WASTES BY EXTRACTION OF LEAD AND ZINC OXIDES

2021 ◽  
Vol 2 (446) ◽  
pp. 37-44
Author(s):  
Zarina Bagova ◽  
Kurmanbek Zhantassov ◽  
Gaukhar Turebekova ◽  
Bayan Sapargaliyeva ◽  
Shermakhan Shapalov
Keyword(s):  
Negative Impact ◽  
Ferrous Metal ◽  
Selective Extraction ◽  
Toxic Waste ◽  
Metal Compounds ◽  
Zinc Oxides ◽  
Ferrous Metals ◽  
Lead And Zinc ◽  
Lead Production ◽  
Non Ferrous Metals

Information is given about the need to dispose of waste from the Shymkent lead plant in the form of slags, which have accumulated about 2 million tons. It is proved that lead production slags contain a large number of toxic compounds, such as lead, zinc, osmium, and cadmium, which are dangerous sources of environmental pollution. According to the results of X-ray diffractometric analysis and DTA, it was found that the slag of lead produc- tion contains a fairly high number of non-ferrous metal compounds: the content of lead oxide up to 2 %, zinc oxide up to 17% and copper oxide up to 1.25% of the total weight of the sample. The qualitative composition and content of non-ferrous metals of lead slags makes it possible to make the process of recycling toxic waste from lead production technically and economically feasible. The results of preliminary tests allow us to select a technology for more complete and selective extraction of lead and zinc oxides from the slag waste of lead production. When using a selective method for extracting non- ferrous metals, it is expected to improve the ecological state of the environment and reduce the negative impact on human health due to the disposal of toxic slags from lead production. At the same time, a significant contribution is made to the development of the system of rational use of natural and secondary resources.

scholarly journals ANALYSIS AND PROSPECTIVE UTILIZATION OF TECHNOGENIC SLAG WASTE FROM A LEAD PLANT

2021 ◽  
Vol 2 (446) ◽  
pp. 22-28
Author(s):  
Z. Bagova ◽  
K. Zhantasov ◽  
G. Turebekova ◽  
B. Sapargaliyeva ◽  
Javier Rodrigo-Ilarri
Keyword(s):  
Electron Probe ◽  
Slag Sample ◽  
Ferrous Metal ◽  
Toxic Waste ◽  
Quantitative Composition ◽  
Electron Probe Microanalyzer ◽  
Lead Zinc ◽  
Lead Production ◽  
Zinc Production ◽  
Slag Waste

The article presents the analysis and results of the study of technogenic slag waste of lead-zinc production. Slags of lead-zinc production contain a large number of toxic compounds: lead, zinc, osmium, cadmium, which are dangerous sources of environmental pollution. Due to the open storage of slags, it was found that the maximum permissible concentrations of lead were exceeded. Utilization of man-made slag waste is of great importance for reducing the negative impact on the safety of life and improving the environmental situation in the region. At the same time, slags are valuable raw materials containing compounds of non-ferrous and rare-earth metals. The article shows the results of laboratory studies of slags to determine the qualitative and quantitative composition of valuable components in the waste of lead production and the possibility of their further processing and disposal. Studies of the material of the heavy slag fraction were carried out on an electron probe microanalyzer of the JEOL IXA-8230 Electron Probe microanalyzer brand. X-ray diffractometric analysis of the average slag sample was performed on a DRON-4 diffractometer with Cu radiation, graphite monochromator. Samples were selected heavy fraction and manufactured artificial polished sections (briquettes). The sections were studied under the microscope of the brand LEICA DM 2500P and immersion in liquids. According to the results of research, it was found that lead slags contain a sufficiently high amount of non-ferrous metal compounds: lead oxide up to 0.7 % and zinc oxide up to 8.5 % of the weight amount of slag, which makes the process of recycling toxic waste from lead production technically and economically feasible.

scholarly journals Biological effects of oxygen-enriched drinking water. Review. Part 2

2021 ◽  
Vol 100 (1) ◽  
pp. 25-29
Author(s):  
Jurii A. Rakhmanin ◽  
Natalija A. Egorova ◽  
Rufina I. Mihajlova ◽  
Irina N. Ryzhova ◽  
Marina G. Kochetkova
Keyword(s):  
Drinking Water ◽  
Biological Effect ◽  
Biological Effects ◽  
Human Life ◽  
Experimental Studies ◽  
The Body ◽  
Molecular Response ◽  
Oxygen Homeostasis ◽  
Generalized Peritonitis ◽  
Negative Effect

Human life on Earth depends on the continuous availability of oxygen. Conditions for the entry of oxygen into the body’s cells change in time and space, are easily broken, thus causing the possibility of development of hypoxia - a condition of oxygen starvation of tissues. The second part of the review is devoted to information about the successful use of oxygen-rich water in domestic therapeutic and surgical practice in complex treatment to reduce the negative effect of hypoxia in patients with chronic heart failure and generalized peritonitis complicated by intestinal insufficiency syndrome. Authors consider a common method for improving the supply of oxygen to the body using enteral oxygen therapy - oxygen cocktails in diseases of the cardiovascular system, lungs, bronchi and gastrointestinal tract, atopic dermatitis, placental insufficiency, as well as to improve physical performance, reduce the level of neuroticism and normalize the psychoemotional status. The first part of the review provides data on the modern understanding processes providing oxygen homeostasis in cells, on the critical component responsible for regulating the molecular response to hypoxia - the Hypoxia-Inducible Factors (HIFs) of the family of transcription factors. The possibility to compensate for the lack of oxygen in the body by delivering it to cells and tissues was indicated to consider water and various oxygen cocktails. Data from experimental studies of the biological effect of oxygenated drinking water are analyzed, as well as the results of studying the effects of oxygen-enriched drinking water with the participation of volunteers. The issue of the formation of oxygen (free) radicals when drinking oxygen-enriched drinking water is considered. The review draws specialist’s attention to the problem of the biological effect of oxygen-enriched drinking water, its insufficient knowledge and the possible yet unrealized potential in terms of preventing various diseases and maintaining optimal human health.

scholarly journals Ways of the lead-bearing slag waste utilization

2021 ◽  
Vol 262 ◽  
pp. 04003
Author(s):  
Gaukhar Zahievna Turebekova ◽  
Saule Ospandiyarovna Akhmetova ◽  
Zarina Ilesovna Bagova
Keyword(s):  
Silicon Oxide ◽  
Negative Impact ◽  
Toxic Metal ◽  
Total Sample ◽  
Waste Utilization ◽  
Potassium Oxide ◽  
Metal Compounds ◽  
X Ray ◽  
Lead Production ◽  
Scanning Electron

The article presents the results of research on the influence of lead production slag on the environment and ecology of the city. Due to the open storage of slags, an excess of maximum permissible levels (MPL) of lead was established: near the plant, the concentration of lead in the soil exceeds 3000 mg/kg, while the MPL is 3.2 mg/kg. The data of analyzes obtained by methods of scanning electron microscopy and X-ray microanalysis, performed on a scanning electron microscope (SEM), as well as the results of X-ray fluorescence semi-quantitative analysis, performed on an X-ray fluorescence wave-dispersive spectrometer, have been presented. The results of thermal analysis of samples in air in the 20-1000 °C temperature range are presented.It was revealed that lead slag contains a fairly high amount of toxic metal compounds. It has been established that the average content of toxic metals in slags formed as a result of the activity of a lead plant is: lead - 2, 38%; zinc - 9.81%; copper - 0.97%; iron - 25.31%; silicon oxide - 24.62%; calcium oxide - 16.21%; potassium oxide - 1.42%; sulfur - 1.35% of the total sample weight.The offered technology of a selective method for the extraction of non-ferrous metals allows to enhance the ecological state of the environment and reduce their negative impact on human health by means of the disposal of the lead production slags.

scholarly journals Biological effects of oxygen-enriched drinking water. Review. Part 1

2020 ◽  
Vol 99 (11) ◽  
pp. 1211-1216
Author(s):  
Jurii A. Rakhmanin ◽  
Natalija A. Egorova ◽  
Rufina I. Mihaylova ◽  
Irina N. Ryzhova ◽  
Marina G. Kochetkova
Keyword(s):  
Drinking Water ◽  
Biological Effect ◽  
Biological Effects ◽  
Human Life ◽  
Experimental Studies ◽  
The Body ◽  
Molecular Response ◽  
Oxygen Homeostasis ◽  
Generalized Peritonitis ◽  
Negative Effect

Human life on Earth depends on the continuous availability of oxygen, but conditions for the entry of oxygen into the cells of the body change in time and space, easily broken, owing to what may develop hypoxia - a condition of oxygen starvation of tissues. The first part of the review provides information on the maintenance of oxygen homeostasis in cells, on the key component responsible for the regulation of the molecular response to hypoxia - the HIFs family of transcription factors (Hypoxia-Inducible Factors). It is indicated that it is possible to compensate for the lack of oxygen in the body by delivering it to cells and tissues with water and various oxygen cocktails. Data from experimental studies of the biological effect of oxygenated drinking water, as well as the results of studying the effects of oxygen-enriched drinking water with the participation of volunteers are presented. The issue of the formation of oxygen (free) radicals when drinking oxygen-enriched drinking water is considered. The second part of the review will provide data on the successful use of oxygen-rich water in domestic therapeutic and surgical practice in complex treatment in order to reduce the negative effect of hypoxia in patients with chronic heart failure and generalized peritonitis complicated by intestinal insufficiency syndrome; on the method of improving the supply of oxygen to the body using enteral oxygen therapy - oxygen cocktails - for diseases of the heart, lungs, bronchi and gastrointestinal tract, atopic dermatitis, placental insufficiency, as well as to improve physical and mental performance. The review draws specialist’s attention to the problem of the biological effect of oxygen-enriched drinking water, its insufficient knowledge and the possible yet unrealized potential in terms of preventing various diseases and maintaining optimal human health.

Scanning electron microscopy of freeze-fractured prescapular lymph node of caprine

1984 ◽  
Vol 42 ◽  
pp. 244-245
Author(s):  
O. Faroon ◽  
F. Al-Bagdadi ◽  
T. G. Snider ◽  
C. Titkemeyer
Keyword(s):  
Lymph Node ◽  
Lymph Nodes ◽  
Lymphatic System ◽  
Three Dimensional ◽  
Meat Products ◽  
The Body ◽  
Morphological Data ◽  
The World ◽  
Cellular Constituent ◽  
Scanning Electron

The lymphatic system is very important in the immunological activities of the body. Clinicians confirm the diagnosis of infectious diseases by palpating the involved cutaneous lymph node for changes in size, heat, and consistency. Clinical pathologists diagnose systemic diseases through biopsies of superficial lymph nodes. In many parts of the world the goat is considered as an important source of milk and meat products.The lymphatic system has been studied extensively. These studies lack precise information on the natural morphology of the lymph nodes and their vascular and cellular constituent. This is due to using improper technique for such studies. A few studies used the SEM, conducted by cutting the lymph node with a blade. The morphological data collected by this method are artificial and do not reflect the normal three dimensional surface of the examined area of the lymph node. SEM has been used to study the lymph vessels and lymph nodes of different animals. No information on the cutaneous lymph nodes of the goat has ever been collected using the scanning electron microscope.

X-ray micro tomography in the scanning electron microscope

1978 ◽  
Vol 36 (1) ◽  
pp. 106-107 ◽  
Author(s):  
W. Brünger
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Target Surface ◽  
The Body ◽  
X Rays ◽  
Cross Sectional ◽  
X Ray ◽  
Micro Tomography ◽  
Scanning Electron

Reconstructive tomography is a new technique in diagnostic radiology for imaging cross-sectional planes of the human body /1/. A collimated beam of X-rays is scanned through a thin slice of the body and the transmitted intensity is recorded by a detector giving a linear shadow graph or projection (see fig. 1). Many of these projections at different angles are used to reconstruct the body-layer, usually with the aid of a computer. The picture element size of present tomographic scanners is approximately 1.1 mm2.Micro tomography can be realized using the very fine X-ray source generated by the focused electron beam of a scanning electron microscope (see fig. 2). The translation of the X-ray source is done by a line scan of the electron beam on a polished target surface /2/. Projections at different angles are produced by rotating the object.During the registration of a single scan the electron beam is deflected in one direction only, while both deflections are operating in the display tube.

Chronic Hypoxia as a Potential Factor in Human Life-threatening Diseases

2017 ◽  
Vol 10 (4) ◽  
pp. 3759-3762
Author(s):  
Sandhya MNVS ◽  
Vanitha K ◽  
Ramesh A
Keyword(s):  
Chronic Hypoxia ◽  
Atmospheric Oxygen ◽  
Human Life ◽  
The Body ◽  
Cellular Damage ◽  
Otto Warburg ◽  
Regular Treatment ◽  
Breathing Exercises ◽  
Hypoxic Conditions ◽  
Cancerous Cell

The review article focuses on the importance of adequate oxygen levels in the body as cure and therapy for many ailments. It is known that hypoxia is the cause for cellular damage and if it can be applied to major patho-physiology’s, it can be observed that slow and chronic hypoxic conditions are the cause for most of the diseases. On the contrary, providing each cell of the body with proper oxygen may be helpful in maintaining the immunity of the body and therefore treating many disease conditions. This theory, if tested may show positive results in heart related diseases, neuronal disorders, stresses, digestive disorders and the unresolved cancer too. Slow decrease in the levels of atmospheric oxygen could be a reason to induce chronic hypoxia. According to Dr. Otto Warburg, a Noble laurate, a normal cell when deprived of oxygen, may get converted to a cancerous cell, whereas a cancerous cell cannot survive in aerobic conditions. If this part of his research be concentrated on, there could be fruitful results in the treatment of cancer. To maintain adequate levels of oxygen in the body, simple yogic breathing practices are helpful. And to maintain the adequate atmospheric oxygen, trees and plants which cleanse the atmospheric air are useful. Clinical surveys on volunteers who have been practicing regular breathing exercises can prove the fact that proper and concentrated respiration could prevent many diseases. Thus, supplementing breathing exercises along with the regular treatment for cancer patients could be helpful in alleviating cancer and other diseases.

scholarly journals Migration of Silver and Copper Nanoparticles from Food Coating

Coatings ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 380
Author(s):  
Hamed Ahari ◽  
Leila Khoshboui Lahijani
Keyword(s):  
Copper Nanoparticles ◽  
Inductively Coupled Plasma ◽  
Food Packaging ◽  
Human Life ◽  
Analytical Techniques ◽  
Optical Emission ◽  
Atomic Emission ◽  
The Body ◽  
Toxic Effects ◽  
Inductively Coupled

Packaging containing nanoparticles (NPs) can increase the shelf life of products, but the presence of NPs may hazards human life. In this regard, there are reports regarding the side effect and cytotoxicity of nanoparticles. The main aim of this research was to study the migration of silver and copper nanoparticles from the packaging to the food matrix as well as the assessment techniques. The diffusion and migration of nanoparticles can be analyzed by analytical techniques including atomic absorption, inductively coupled plasma mass spectrometry, inductively coupled plasma atomic emission, and inductively coupled plasma optical emission spectroscopy, as well as X-ray diffraction, spectroscopy, migration, and titration. Inductively coupled plasma-based techniques demonstrated the best results. Reports indicated that studies on the migration of Ag/Cu nanoparticles do not agree with each other, but almost all studies agree that the migration of these nanoparticles is higher in acidic environments. There are widespread ambiguities about the mechanism of nanoparticle toxicity, so understanding these nanoparticles and their toxic effects are essential. Nanomaterials that enter the body in a variety of ways can be distributed throughout the body and damage human cells by altering mitochondrial function, producing reactive oxygen, and increasing membrane permeability, leading to toxic effects and chronic disease. Therefore, more research needs to be done on the development of food packaging coatings with consideration given to the main parameters affecting nanoparticles migration.

scholarly journals Psychological Consequences of the Delay in the Silent Mentor Programme During the COVID-19 Pandemic: Perspectives From Family Members of Silent Mentors

2021 ◽  
pp. 003022282110009
Author(s):  
Li Ping Wong ◽  
Sik Loo Tan ◽  
Haridah Alias ◽  
Thiam Eng Sia ◽  
Aik Saw
Keyword(s):  
Mental Health ◽  
Qualitative Interviews ◽  
Psychological Impact ◽  
Family Members ◽  
Well Being ◽  
The Body ◽  
Functional Health ◽  
Psychological Consequences ◽  
Negative Effect ◽  
Health And Well Being

The COVID-19 pandemic has put a hold on the Silent Mentor Programme (SMP); this pause has not only caused unprecedented challenges for the delivery of medical education but has forced changes in the programme ceremony sessions. We aimed to describe the psychological impact and experiences of family members of silent mentors during the COVID-19 pandemic using qualitative interviews. Many expressed feelings of remorse and unrest about the unprecedented delay of the SMP. The delay increased negative emotions particularly among some elderly family members; however, there was no prominent negative effect on their functional health and well-being. Several participants relayed the belief that the soul cannot rest until the body receives a proper burial while some worried about the deterioration of the physical condition of the mentors. In conclusion, findings provide insights into the importance of not overlooking the mental health implications of delaying the SMP in future outbreaks or crises.

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