Overpopulation Research Articles

Overpopulation of Animals in India: Addressing Legal Shortcomings

Overpopulation of Animals in India: Addressing Legal Shortcomings

Resource-Dependent Sex Ratios in Lampreys: Implications for Ecological Stability and Economic Impact

The sex ratio of the lamprey, a fish that is both bottom and active in the middle of the food chain, varies according to the state of environmental resources. Over the long term, due to its population explosion, the lamprey has taken a significant toll on economic fish stocks and has become a species considered a disaster by humans. This study aimed to assess the specific adaptive strategies of the lamprey and its impact on the ecosystem. In this paper, a detailed assessment of the impacts on the ecosystem and its stability was carried out by constructing an accurate model. The results of the study revealed key indicators such as economic losses, resource utilization, and impact factors of the lamprey on other organisms, thus effectively evaluating the resource utilization capacity of the lamprey within its habitat. This paper provides insight into the complexity of sex ratios to accommodate varying resource availability. By analyzing the pros and cons of such adaptations, thereby providing a comprehensive understanding of the subtle ecological interactions in the ecosystems inhabited by the lamprey.

Natural Resources Depletion

The catchphrase of the early 21st century has become global warming, climate change, and the consequent push to embrace significantly more ecologically concerned attitudes towards our finite natural resources.When natural resources are being used up more quickly than they can be regenerated, this is referred to as resource depletion. One can distinguish between a country's non-renewable and renewable natural resources. Natural resources play a major role in a country's economic growth. It appears that most current patterns of urbanization, agriculture, and the use of energy and natural resources are unsustainable and need immediate correction. Natural resource usage does not appear to be justified, which might have negative economic effects on the country. Depletion of resources is being accelerated by population explosion. This article examines how, between 1990 and 2023, the use of renewable energy sources and the loss of natural resources affected environmental deterioration.

An Ab initio based OH initiated oxidation kinetics of glycerol carbonate: A promising biofuel component

The global energy demand is steadily increasing because of the population explosion and economic growth. Fossil fuels supply around 85 % of global primary energy demand. On one hand, fulfilling the increasing energy demands is a big challenge for the next few decades. On the other hand, the continued burning of fossil fuels leads to higher CO2 emissions, severely impacting global warming. Therefore, the policymakers vow to shift from conventional fuels to renewable resources for economic, environmental, and future energy security reasons. In this context, biofuels from lignocellulosic biomass and/or carbon-neutral fuels produced in the sustainable carbon cycle can close the carbon cycle and reach net zero-carbon emission. Recently, glycerol carbonate has been proposed as a promising fuel or fuel additive for future sustainability. Therefore, we investigated the hydrogen abstraction reactions of glycerol carbonate (GC) by OH radicals using high-level ab initio and variational transition state theory calculations. We mapped out the potential energy surface using the CCSD(T)/cc-pV(D, T)Z//MP2/cc-pVTZ level of theory. We used the ab initio parameters to obtain the site-specific rate coefficients by employing the variational transition state theory. We observed that every hydrogen atom in GC displays a unique reactivity with OH radicals. We derived branching ratio of each channel that are difficult to access experimentally. The overall rate coefficients exhibit a strong non-Arrhenius behaviour, which can be represented as:kovCVT/SCT(T)=3.39×10−20×T2.659×e−750.0Jmol−1RTcm3moleculesThis is the first reported rate data for the glycerol carbonate and OH radicals reaction.

Male animal sterilization: history, current practices, and potential methods for replacing castration.

Sterilization and castration have been synonyms for thousands of years. Making an animal sterile meant to render them incapable of producing offspring. Castration or the physical removal of the testes was discovered to be the most simple but reliable method for managing reproduction and sexual behavior in the male. Today, there continues to be global utilization of castration in domestic animals. More than six hundred million pigs are castrated every year, and surgical removal of testes in dogs and cats is a routine practice in veterinary medicine. However, modern biological research has extended the meaning of sterilization to include methods that spare testis removal and involve a variety of options, from chemical castration and immunocastration to various methods of vasectomy. This review begins with the history of sterilization, showing a direct link between its practice in man and animals. Then, it traces the evolution of concepts for inducing sterility, where research has overlapped with basic studies of reproductive hormones and the discovery of testicular toxicants, some of which serve as sterilizing agents in rodent pests. Finally, the most recent efforts to use the immune system and gene editing to block hormonal stimulation of testis function are discussed. As we respond to the crisis of animal overpopulation and strive for better animal welfare, these novel methods provide optimism for replacing surgical castration in some species.

Bio-Oil Upgrading over ZSM-5 Catalyst: A Review of Catalyst Performance and Deactivation

Due to population explosion and industrialization, waste biomass and polymer conversion into biofuel has attracted the interest of researchers. The application of the ZSM-5 catalyst for bio-oil upgrading into renewable biofuels has attracted researchers’ efforts as an excellent catalyst. The need for improved biofuel quality with reduced oxygenates has further necessitated the application of catalyzed upgrading techniques. The catalytic performance of the ZSM-5 catalyst was attributed to its exceptional pore structure and window architecture and when it is incorporated with some selected transition metals to improve aromatic hydrocarbon formation. The review revealed that the development of coke deposit on the microspores of the ZSM-5 catalyst hindered the effective transport of large molecular compounds into the active sites for an easy deoxygenation process. Hence, the introduction of mesoporosity, hybrid catalyst development, and tailored crystal growth on the ZSM-5 catalyst could address several hindrances associated to conventional ZSM-5. Therefore, the need for catalyst modification is paramount for ZSM-5 performance during bio-oil upgrading.

Knowledge and Perception of Women of Reproductive Age on Utilization of Maternal Health Care Services in Akure South Local Government Area of Ondo State: A Quantitative Approach

Even though Maternal health care services utilization is very important for further improvement of maternal health, limited evidence exists on the utilization of Maternal health care services among women of reproductive age in Nigeria. This has resulted into high rate of maternal mortality. Thus, this study aims to assess the knowledge and perception of women of reproductive age on utilization of Maternal health care services in Akure south local government area of Ondo State, south western Nigeria using a qualitative research methodology. Data were primarily sourced from 384 women of child-bearing age who were purposively selected across the communities in Akure south local government area through a multi-purpose sampling technique. Secondary Data were obtained from journals, hospital, records, government’s publications, newspapers, and some internet materials that are relevant to this study. Analyses of Data were carried out with the aids of descriptive and inferential statistics. The findings revealed that majority of the respondents have good knowledge but poor perception of the Maternal health care services. Majority of the respondents opined that education and religion contributed to the utilization of Maternal health care services in the local government area. The study further revealed that there is a significant association between respondents knowledge and utilization of Maternal health care services (R= 12.29, p< 0.000). There is also a significant association between respondents religion and the utilization of Maternal health care services ( R = 8.44, P < 0.01). Significant association also exists between the respondent level of education and the use of maternal healthcare service (r =16.20, p< 0.01). But here is no significant association between the perception of the respondent and utilization of maternal healthcare service ( R =10.25, p>0.777) . The study, however, concluded that women of reproductive age in Akure South Local Government area have good knowledge and poor perception maternal healthcare service which utilization is influenced by their education especially in rural communities within the study areas and their religious affiliations. Against this background, the study recommends increased enlightenment among child- bearing women on the importance of maternal healthcare services, subsidization of cost of accessing healthcare services by the governments and NGOs, strengthening the National Health Insurance scheme to incorporate family planning into its benefit package, upgrade of the existing health facilities and establishment of more health centres in rural and semi-urban areas with explosive populations.

Development and enhancement in drying performance of a novel portable greenhouse solar dryer

The increasing demand for drying technology for agriculture and food products has gained significant attention due to population explosion and inadequate resources available. The present study focuses on the concept of enhancing the drying performance of portable greenhouse solar dryer. The experimental investigations for evaluating the dryer performance were carried out while drying out onion slices. The experimentation was carried out in 4 different modes to demonstrate the effect of various modifications implemented to improve the dryer performance. The active greenhouse solar dryer (AGHSD) is the first working mode which comprises of the conventional drying system with active mode of removing moisture. The second working mode uses recirculating fans along with exhaust fans (AGHSD@circulating fans). In the third working mode an Evacuated Tube-type solar Air Heater was added to along with previous modification (AGHSD@circulating fans + ETAH). The last working mode adds an air flow distribution system to the incoming pre heated air from the Evacuated Tube-type solar Air Heater (AGHSD@circulating fans + ETAH + air flow system). Various performance characteristics like moisture ratio, heat utilization factor, coefficient of energy, heat gain and thermal efficiency of the dryer are used to analyze the changes in the drying performance. AGHSD@circulating fans + ETAH + air flow system reduced the moisture ratio in the onion slices to 5.32% from 95% in one day, compared to 19.99% for AGHSD and 46% for open sun drying. The heat utilization factor and coefficient of energy for AGHSD@circulating fans + ETAH + air flow system and AGHSD@circulating fans + ETAH improve by 10% and 15% respectively as compared to AGHSD. AGHSD@circulating fans + ETAH + air flow system shows improved heat gain of 29.53% and shows the best drying rate for the developed drying system. The thermal efficiency of AGHSD@circulating fans + ETAH + air flow system is around 60% while for AGHSD is around 41% which is higher than the thermal efficiency of 20% for sundried samples.

Uncovering widespread Anthropocene dietary shifts in Chinese large mammalian herbivores.

The Anthropocene's human-dominated habitat expansion endangers global biodiversity. However, large mammalian herbivores experienced few extinctions during the 20th century, hinting at potentially overlooked ecological responses of a group sensitive to global change. Using dental microwear as a proxy, we studied large herbivore dietary niches over a century across mainland China before (1880s-1910s) and after (1970s-1990s) the human population explosion. We uncovered widespread and significant shifts (interspecific microwear differences increased and intraspecific microwear dispersion expanded) within dietary niches linked to geographical areas with rapid industrialization and population growth in eastern China. By contrast, in western China, where human population growth was slower, we found no indications of shifts in herbivore dietary niches. Further regression analysis links the intensity of microwear changes to human land-use expansion. These analyses highlight dietary adjustments of large herbivores as a likely key factor in their adaptation across a century of large-scale human-driven changes.

Genomics for Emerging Pathogen Identification and Monitoring: Prospects and Obstacles

Emerging infectious diseases (EIDs) pose an increasingly significant global burden, driven by urbanization, population explosion, global travel, changes in human behavior, and inadequate public health systems. The recent SARS-CoV-2 pandemic highlights the urgent need for innovative and robust technologies to effectively monitor newly emerging pathogens. Rapid identification, epidemiological surveillance, and transmission mitigation are crucial challenges for ensuring public health safety. Genomics has emerged as a pivotal tool in public health during pandemics, enabling the diagnosis, management, and prediction of infections, as well as the analysis and identification of cross-species interactions and the categorization of infectious agents. Recent advancements in high-throughput DNA sequencing tools have facilitated rapid and precise identification and characterization of emerging pathogens. This review article provides insights into the latest advances in various genomic techniques for pathogen detection and tracking and their applications in global outbreak surveillance. We assess methods that leverage pathogen sequences and explore the role of genomic analysis in understanding the epidemiology of newly emerged infectious diseases. Additionally, we address technical challenges and limitations, ethical and legal considerations, and highlight opportunities for integrating genomics with other surveillance approaches. By delving into the prospects and obstacles of genomics, we can gain valuable insights into its role in mitigating the threats posed by emerging pathogens and improving global preparedness in the face of future outbreaks.

The Free Economic Zone of Manaus Vis-à-Vis the 2030 Agenda for Sustainable Development

Purpose: This study aims to analyze the evolution of sustainability indicators within the Free Economic Zone of Manaus (Zona Franca de Manaus - ZFM), with a specific focus on workforce engagement in the manufacturing sector. Method/design/approach: Employing descriptive research methods, this research equips both public and private organizations with evaluation tools to assess industrial employment's quality in the context of sustainable development. The study emphasizes the importance of monitoring sustainable development indicators at various geographical levels to facilitate effective corrective strategies. Results and conclusion: The public policies adopted in the ZFM, although generating economic growth, had adverse effects on other social indicators such as quality of life, urban sprawl, and population explosion. These outcomes indicate a misalignment with the Sustainable Development Goals outlined in the 2030 Agenda. Notably, these misalignments are evident in the declining number of manufacturing plant employees, persistent gender-based wage disparities, a rise in workers in lower income brackets, and subsequently, a limited potential for local consumption. Research implications: The ZFM exemplifies the vital role of public policy in driving development. While innovation in the ZFM is still at an early stage, there exists potential for linking economic innovation to improvements in quality of life and sustainable natural resource management. Originality/value: This analysis focuses on sustainability indicators to assess regional development, highlighting the significance of Sustainable Development Goals in evaluating the quality of development and monitoring the outcomes of public policy within the unique context of the ZFM.

Phenol removal from aqueous solution using advanced oxidation process enabled by a hybrid system: UV/H2O2/O3/TiO2

The need for healthy and pollution-free water is vital given the world’s industrialization and population explosion. The removal of chemical pollutants, especially phenol and phenolic compounds, from urban and industrial wastewaters is of particular importance due to their high water solubility and toxicity. Previous physicochemical techniques for phenol removal are no longer cost-effective. Advanced oxidation processes (AOPs) using various oxidizing agents have been recently recognized as an effective method for removing organic compounds through mineralization. The present work evaluated the phenol (100 ppm) removal from aqueous solutions through photooxidation systems of UV exposure, UV/TiO2, O3, O3/TiO2, H2O2, H2O2/UV, H2O2/TiO2, H2O2/TiO2/O3 and H2O2/TiO2/O3/UV. The results showed a decrease in the phenol concentration by almost half using UV, UV/TiO2, O3, O3/TiO2, H2O2, H2O2/UV and H2O2/TiO2 within 50 min. The phenol concentration reached 50 and 71 ppm using H2O2/TiO2/O3 system within 50 and 70 min, respectively. The UV/H2O2/O3/TiO2 system reduced the phenol concentration to zero after 40 min. The findings revealed that the AOP enabled by the UV/H2O2/O3/TiO2 combined system caused the complete removal of phenol, highlighting the capacity of the proposed system to remove toxic aromatic compounds such as phenol released during the wastewater treatment process.

An outbreak of Gynanisa maja (Lepidoptera: Saturniidae) larvae in the south-eastern lowveld of Zimbabwe.

The larvae of speckled emperor moths (Gynanisa maja) are important plant defoliators in savanna ecosystems of southern Africa and a valuable food resource for indigenous communities. Population explosions of G. maja larvae can negatively impact an area's primary productivity thereby altering herbivory patterns and associated ecosystem processes. Harvests of the larvae enhance socio-economic livelihoods of local people by providing a source of protein and improving household incomes. We report on a population outbreak of G. maja larvae that occurred in south-eastern Zimbabwe between December 2022 and January 2023 and discuss the ecological and social significance of the event. A total biomass weight of 5811 tons of G. maja larvae was estimated over the area of the outbreak and extensive defoliation was recorded in Colophospermum mopane trees. We could not associate the outbreak with any obvious environmental conditions and speculate that it may have been caused by subtle triggers that are not easily identified.

Jewish Credit, Debt, and Economic Integration in Eighteenth-Century London

Early modern London’s population explosion was reliant upon the constant arrival of migrants, predominantly from the provinces but joined by a variety of those born overseas. After re-admittance during the Commonwealth in 1656, Jews made up an increasingly large proportion of immigrants. However, centuries of antisemitic distrust did not disappear, and London’s Jews faced unique obstacles to integration in the city, not least in their ability to engage in the credit market that underpinned commerce. Using surviving debt imprisonment records, this article analyses the extent to which Jews were able to overcome sustained prejudice and integrate broadly in London’s commercial environment. It suggests Jews were, by the second half of the century, just as likely to be imprisoned for debts as to imprison others, while the sums owed, the occupational structure, and residential geography of Jewish Londoners suggest that integration was frequently dependent on wealth and class.

Challenges, limitations, and applications of nanofluids in solar thermal collectors-a comprehensive review.

The daily increase in the demand for energy consumption is partly caused by the global population explosion and advancements in technology. Humanity relies on energy to fulfil its daily routines, such as electricity for lighting, heating, cooling, and running electronic devices. There are continuous attempts by researchers and industry experts to optimize and enhance the efficiency of various sustainable energy generation devices. Solar collectors play a critical role in the renewable energy sector, which is vital in helping the world achieve a clean, green, and sustainable environment. Over the last two decades, researchers have made significant efforts to explore various techniques for enhancing the effectiveness of solar thermal collectors. Their effort has been centered around improving the fluid thermal properties, which act as the heat transfer medium in solar collectors. The discovery of nanofluids will help resolve some of the challenges associated with conventional fluid used in solar collectors. Enhancement through nanofluids is influenced by several factors, which include nanoparticle types, nanoparticle concentration, base fluid, and the purpose of its application. This review provides a technical summary of the application of nanofluids in the two main types of collectors: non-concentrating and concentrated thermal collectors. Findings from this study showed that TiO2 + Cu hybrid nanofluids with a mass fraction of 0.03 augment heat transfer coefficient by 21% in parabolic trough collectors. The merits of employing nanofluids as heat transfer fluids in solar collectors are examined, while also outlining the obstacles and areas where further research is needed.

Cisgenics and intragenics: boon or bane for crop improvement

Recent advances in molecular biology and genetic engineering have made it possible to increase agricultural yields when compared to conventional methods. However, lots of challenges are to be addressed due to changing climatic conditions. Although genetically modified organisms (GMOs) have proven their potential in a few crops, but needs to be explored in majority of the field/vegetable crops to overcome food and nutritional security in view of alarming population explosion. In spite of advantages from GMO crops due to the presence of foreign DNA, queries regarding their safety, environmental dangers and health effects needs to be addressed. One of the major environmental issues concerning transgenic crops is the mixing of genetic components across species that cannot hybridize naturally. Due to these limitations, new revolutionary technologies have been developed, such as intragenesis and cisgenesis for the transformation and development of superior plants. While cisgenesis entails genetic modification employing a complete copy of natural genes with their native regulatory components that only belong to sexually compatible species, intragenesis refers to the transfer of unique combinations of genes and regulatory sequence inside the same species. In cisgenesis, the donor genes are the same genes employed in conventional breeding. The two benefits of cisgenics are avoiding linkage drag and making greater use of existing gene alleles. This method significantly shortens the time it takes to breed plants by combining conventional methods with cutting-edge biotechnological tools. Because of this, plant genomes can be altered without causing drastic changes to the whole plant population and the environmental effects of cisgenic plants cannot be compared to those of transgenics. Transgenesis and cisgenesis share the same transformation methods; hence, cisgenic, intragenic and transgenic plants produced through random insertion do not pose any distinct risks with regard to host genome modifications. In contrast, using new genome techniques lessens the dangers related to potential unintentional changes to the host DNA. The use of cisgenesis and intragenesis as alternatives to transgenesis has been restricted to a small number of species due to incomplete understanding of the required regulatory sequences.

Spatial cooperative simulation of land use-population-economy in the Greater Bay Area, China

Fast urbanization brings great challenges to sustainable development goals, such as excessive exploitation and population explosion. Classical cellular automata (CA) have been widely used to independently simulate the change of spatial features, i.e. land use, population, economic production, etc. However, most CA models rely on historical data as static driving factors to simulate future scenarios while ignoring the inter-wined influences among multiple features in the development process. To address this issue, this study proposes a spatial cooperative simulation (SCS) approach to simulate the land use, population, and economy changes. The SCS approach starts with a separate CA model to obtain the initial scenes of each feature. Then, the simulation results of each other two features are used as dynamically updated driving factors, rather than the static historical data, to capture the inter-wined influence of multiple features during the development process. This step is iteratively performed until the changes of each feature converge and the final simulation results will be reported. The simulation experiment in Greater Bay Area demonstrates that the SCS approach can well capture the simultaneous development process and outperforms baseline approaches. The SCS approach is capable of forecasting future development scenarios and facilitates spatial planning and infrastructure synergies.

GAMBARAN AKSEPTOR KB DI KECAMATAN TANIMBAR SELATAN MALUKU

One of the problems in Indonesia is the rate of population growth which can cause a population explosion. To overcome this problem, the government implemented a Family Planning (KB) program using contraception. The aim of this research is to find out the picture of acceptors in South Tanimbar District in 2023. This research is a quantitative analytical research with a cross sectional research design. The sampling time was carried out in January-April 2023. Samples were taken using a total sampling of 460 people. Data analysis uses univariate analysis with frequency distribution. The results of the research show that in South Tanimbar District, Maluku, the subdistrict with the highest number of active family planning participants is the subdistrict with the highest number of family planning acceptors being Saumlaki and Olilit Raya, namely 99 people, while the highest number of contraceptive users is injectable family planning at 59.35% followed by implant birth control at 27.61 %.

Sustainable application of electrocatalytic and photo-electrocatalytic oxidation systems for water and wastewater treatment: a review.

Wastewater treatment and reuse have risen as a solution to the water crisis plaguing the world. Global warming-induced climate change, population explosion and fast depletion of groundwater resources are going to exacerbate the present global water problems for the forthcoming future. In this scenario, advanced electrochemical oxidation process (EAOP) utilising electrocatalytic (EC) and photoelectrocatalytic (PEC) technologies have caught hold of the interest of the scientific community. The interest stems from the global water management plans to scale down centralised water and wastewater treatment systems to decentralised and semicentralised treatment systems for better usage efficiency and less resource wastage. In an age of rising water pollution caused by contaminants of emerging concern (CECs), EC and PEC systems were found to be capable of optimal mineralisation of these pollutants rendering them environmentally benign. The present review treads into the conventional electrochemical treatment systems to identify their drawbacks and analyses the scope of the EC and PEC to mitigate them. Probable electrode materials, potential catalysts and optimal operational conditions for such applications were also examined. The review also discusses the possible retrospective application of EC and PEC as point-of-use and point-of-entry treatment systems during the transition from conventional centralised systems to decentralised and semi-centralised water and wastewater treatment systems.

Design and numerical analysis of inverted well technique for aquifer recharge estimation

The seasonal polarization due to climate change and population explosion in developing countries is translating into rapid groundwater depletion. In the populous cities relying on groundwater for their water requirements, aquifers are turning into exiguity due to much higher depletion corresponding to recharge rate. Therefore, it is imperative to model the aquifer conditions for extrapolating the future scenario and adopting efficient and safe groundwater recharge techniques based on simulation results to counter the proliferating depletion rate. In this study, an efficient inverted well design with effective multiple filtration compartments is proposed for ground water recharge at natural runoff collection points having high conductivity and effective filtration. The current depletion rate and design recharge capability was assessed by simulating the aquifer conditions along with boundary conditions confined to model town area, groundwater table data of extraction and observation wells in study area from year 2014–2020, precipitation data 2008 to 2020, and other spatial and temporal variations in model town area of Lahore in VISUAL MODFLOW program. The model results exhibited that the depletion rate of Lahore (model town area having a land area of 5.9 km2 approximately) was 0.96 m per year (investigating year 2014–2020), this concurred with the depletion rate recorded by water table observations of extraction and observations wells from year 2014–2020. The depressions in model town park area of Lahore were simulated as recharge points, and 4 inverted wells with their calculated conductivity were simulated in model. The precipitation data with peak runoff generations for 7 years (2014–2020) was intercalated in the model. The results explicated that the simulation of inverted wells recharge technique at natural rainfed depressions of model town park area significantly reduced the depletion rate from 0.93 m per year (2014–2020) to 0.76 m per year (2021–2023) in MODFLOW visual water table contours. Therefore, this inverted well design-based recharge technique can effectively be used for efficient groundwater recharge, and its application at natural depressions in the groundwater dependent cities can effectively hinder and stabilize the depleting ground water resources.