Natural Science

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ISSN / EISSN : 2150-4091 / 2150-4105
Published by: Scientific Research Publishing, Inc. (10.4236)
Total articles ≅ 1,192
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Yubiao Sun, Huan Zhao, Xiaoyu Jiang, Qiangcai Mai
Published: 1 January 2022
Journal: Natural Science
Natural Science, Volume 14, pp 19-23; https://doi.org/10.4236/ns.2022.142003

Abstract:
Objective: To understand the effects of several commonly used antipsychotics on the renal function of patients with mental illness. Method: Collected patients with mental illness who were hospitalized in our hospital from January 2020 to June 2021, and selected as the research subjects patients with psychiatric disorders who were treated with 2 kinds of commonly used antipsychotic drugs; and collected 3 ml of venous blood before treatment and one month after treatment for renal function tests; observed the changes of renal function indexes before and after treatment. Results: In the collected 694 patients with mental illness, before using antipsychotic drugs, the renal function indexes were BUN: 4.42 ± 1.92 mmol/l; Cr: 70.97 ± 16.92 μmol/l; CCr: 88.37 ± 21.07 ml/min; β2-MG: 1.67 ± 0.61 mg/L; UA: 359.90 ± 112.82 μmol/l; CYS-C: 0.92 ± 0.24 mg/L. One month after using antipsychotics, BUN: 3.77 ± 1.37 mmol/l; Cr: 70.46 ± 16.71 μmol/l; CCr: 87.78 ± 20.63 ml/min; β2-MG: 1.75 ± 0.64 mg/L; UA: 332.53 ± 91.48 umol/l; CYS-C: 0.92 ± 0.24 mg/L; the renal function indexes of urea nitrogen, β2 microglobulin, uric acid and other items all changed significantly. The differences before and after treatment were statistically significant, P < 0.01. Conclusion: Several commonly used antipsychotic drugs have a greater impact on the renal function of patients with mental illness. During the treatment, the changes in renal function should be monitored regularly, if severe renal damage is found, the treatment plan or dosage should be adjusted in time to avoid endangering life.
Jiming Li, Meide Wei, Linghong Wang, Yanbo Wu, Lu Kang, Yan Tang, Huan Zhao, Yubiao Sun
Published: 1 January 2022
Journal: Natural Science
Natural Science, Volume 14, pp 117-124; https://doi.org/10.4236/ns.2022.143011

Abstract:
Objective: To investigate the antibacterial effect of baicalin combined with cefoperazone-sulbactam sodium on drug-resistant strains of Pseudomonas aeruginosa. Method: Pseudomonas aeruginosa strains that are sensitive and resistant to cefoperazone-sulbactam sodium were selected to prepare different test bacterial solutions respectively; The test solutions of baicalin and cefoperazone sulbactam sodium were prepared respectively, and different test groups and control groups were set up; The drug sensitivity tests of different concentration gradients of baicalin and cefoperazone sulbactam sodium used alone and in combination were carried out for different sensitive and drug-resistant strains, and the standard strains were used as parallel control. Result: The drug susceptibility test results of the combined use of baicalin and cefoperazone-sulbactam against Pseudomonas aeruginosa drug-resistant strains were compared with the drug susceptibility results of the two used separately, and the difference was statistically significant (P Pseudomonas aeruginosa.
Mohamed Yahia Shirgawi, , Mubarak Dirar Abd-Alla Yagoub
Published: 1 January 2022
Journal: Natural Science
Natural Science, Volume 14, pp 125-132; https://doi.org/10.4236/ns.2022.143012

Abstract:
Unification of fundamental forces is the dream of physics. Nevertheless, unfortunately gravitational force operators to be isolated in its geometrical content from other forces. This encourages some researchers to propose the so-called gravimagnetic field to unify gravity with other forces and to explain some cosmological problems at the early universe. This motivates to construct a new model to confirm the existence of gravitomagnetic and a corresponding magnetic field associated with any field. Using the formal Newton definition of force and considering the magnetic force to be related to the time varying mass, the magnetic force is shown to be equal to the centrifugal force. This equality is typical when treating a particle as string. Using also the definition of force in terms of potential and electric force only, energy is shown to be conserved. The Newton force can be defined also in terms of four-dimensional potential with the time varying part related to the magnetic potential. When the particle is treated as a string, energy conservation holds, while for ordinary particle, the Lagrangian is conserved. The energy conservation holds for special relativity also for energy per unit mass. The definition of acceleration for forces that obeys inverse square law shows also the magnetic force is equal to the centrifugal force.
Caifeng Yan, Qing Lin, Buqing Su, Xiaoye Su, Hanzhen Su, Lida Mo
Published: 1 January 2022
Journal: Natural Science
Natural Science, Volume 14, pp 62-70; https://doi.org/10.4236/ns.2022.142007

Abstract:
Objective: To understand the condition of adverse drug reactions and the treatment procedures of amphotericin B for injection in patients with AIDS complicated with fungal infection. Methods: For the research object, a retrospective analysis of adverse reactions of amphotericin B injection in 121 patients of AIDS complicated with fungal infection was reported in our hospital from October 2017 to June 2021 to observe the adverse drug reactions of patients after treatment with amphotericin B for injection, 87 cases with general degree (regarded as the general group) and 34 cases with serious degree (regarded as the serious group), and analyze the general data, medication and course of disease of the two groups for symptomatic treatment. Results: Adverse reactions such as hypokalemia, abnormal liver function, renal impairment, leucopenia and drug fever were more common in the two groups, and there were also many adverse reactions such as bone marrow suppression, rash, anemia, thrombocytopenia, nausea, vomiting, fatigue, dizziness, pruritus, angina pectoris, vertigo, abdominal pain and diarrhea. The rates of leukopenia and drug fever in general group were significantly lower than those in severe group (P < 0.05); in the dose of amphotericin B used, the rate of using 25 mg and more than 25 mg in the general group was significantly lower than that in the severe group (P < 0.05). After symptomatic treat-ment, most patients have improved, and a few are unknown or have not improved. Con-clusion: Amphotericin B for injection has great side effects and will cause different degrees of adverse drug reactions. The dose of amphotericin B for clinical treatment should be ad-justed and disposed according to the adverse reactions to avoid serious consequences.
Yosef Joseph Segman
Published: 1 January 2022
Journal: Natural Science
Natural Science, Volume 14, pp 265-288; https://doi.org/10.4236/ns.2022.147026

Abstract:
This paper provides a perception that all things are connected. Starting with the perception of Metaphysics and how matter exists out of total void, complementary matter, or dark matter, the incompleteness of Einstein relativistic theory. Multi spacetime universes and the jump drive for jumping within and between spacetime universes. Warp drive for space travel. DNA as sequence of momentary frequencies and how it related to Ezekiel’s dry bones prophecy. The outcome of neural patterns as cords of consciousness, consciousness as the collection of all cords of consciousness and the lack of uniqueness of individual consciousness. Finally, all things are cords of consciousness.
Joanna Burger, Michael Gochfeld, David S. Kosson, Kevin G. Brown, Monica Cortes, Kelly Ng
Published: 1 January 2022
Journal: Natural Science
Natural Science, Volume 14, pp 289-304; https://doi.org/10.4236/ns.2022.147027

Abstract:
The Department of Energy (DOE) has one of the largest environmental remediation tasks in the world, cleaning up the radiologic and toxic contamination legacy of nuclear weapons production. DOE has committed itself to accomplish remediation “while protecting human health and the environment”. Many DOE sites are huge, encompassing habitats that are ecologically valuable because they have been protected from human disturbance for 70 years or more. Yet information on the importance of DOE lands for protecting specific ecological resources is often buried in volumes of data. In this paper, we examine the importance of DOE lands as habitats for birds using two sites as examples: the Hanford Site and Oak Ridge Reservation. Our overall goal was to provide a model for communication of key information useful for the public and decision-makers. Birds are conspicuous and familiar features of the landscape, and bird populations are important indicators of habitat quality. As future land use plans evolve, birds can convey important messages about habitat uniqueness and conservation importance and recreational values of designating DOE land for conservation, but only if they are in accessible formats. At the semi-arid Hanford site, shrub-steppe is an important habitat outside the Columbia River corridor. At the wet Oak Ridge Reservation eastern deciduous forest, interior forest is a particularly important habitat. There are different groups of bird species dependent on each habitat. We use two methods for each habitat: 1) a comparison of historical written records and 2) a comparison of land use/land cover data. Habitat loss through development, fragmentation, and degradation is one of the most important causes of avian decline. Importantly, we present the data in a manner suitable for discussion among diverse audiences regarding future use of sites now undergoing remediation. The Hanford Site has recorded 205 bird species, including shrub-steppe species of regional importance. The Oak Ridge Reservation has recorded 213 species of birds, including Neotropical migrants of international concern. In both cases, their respective habitat is key to protection of the unique avian assemblages, and there is a higher percentage of these habitats on the DOE lands than in the surrounding habitats. Our analysis also concludes that these habitats that are of high importance to the rare and declining avian assemblages are mostly increasing on the DOE sites as the once agrarian landscape has reverted to more natural habitat. Since acquisition, DOE has developed about 10% of the land for nuclear and industrial activities, leaving the rest of it as a security buffer for the nuclear production mission. The tables provided in this manuscript can serve as valuable tools in communicating the importance of these lands and protecting these lands for surrounding communities. We commend the DOE for its protection of ecological resources for the regions and the Nation, applaud their mechanisms for ecological protection, and recommend that more of each site’s respective unique and important habitats be designated as preserved in perpetuity as valued ecological resources. This designation entails communicating with Tribes, communities, government agencies and organizations, and the public about the ecological value of their protected lands.
Karima Ali Hamid, Albadawi Abdelbagi Talha, Abdalraheem Ali Babiker, Mohammed Ibrahim Malik, Adam Dawoud Abakar, Omer Mustafa, Elsidig A Saeed, Mohmed Bushra Ahmed, Elhadi Abdalla Ahmed
Published: 1 January 2022
Journal: Natural Science
Natural Science, Volume 14, pp 343-352; https://doi.org/10.4236/ns.2022.148031

Abstract:
Helicobacter pylori is the microbial agent most responsible for gastro-duodenal ulcer and chronic gastritis, which can develop into carcinoma of the stomach. This study was performed in Wad Medani Teaching Hospital, Sudan to detect Helicobacter pylori in stomach samples, and evaluate the performance of the tests used, which were histological stains and PCR. Gastric biopsies were obtained from 105 referred patients during endoscopy, and fixed specimens examined by haematoxylin-eosin and Warthin-Starry silver stains, while DNA was extracted for glmM gene amplification. Epigastric pain was the most common symptom at 78% (82/105) and chronic gastritis recorded with 71% (68/105) of endoscopy results. Warthin-Starry silver stain gave 31% (33/105) as positive for Helicobacter pylori followed by glmM gene 27% (28/105) and haematoxylin-eosin 24% (25/105). The study indicated good performance of histological staining and high specificity of glmM gene in detection of Helicobacter pylori from gastric biopsies.
Rong Fan, Na Liu, Jiapei Dai
Published: 1 January 2022
Journal: Natural Science
Natural Science, Volume 14, pp 217-225; https://doi.org/10.4236/ns.2022.146021

Abstract:
Background: Although a large number of studies have confirmed that the different levels of reactive oxygen species (ROS) in cytoplasm and nucleus have effects on cell growth, proliferation, differentiation and apoptosis, the exact mechanism of ROS action is unclear. An important reason is that the production and degradation time of ROS in cells is very short, and therefore it’s difficult to understand the mechanism of action based on the traditional molecular action process through the ROS diffusion and target binding. Methods: The fresh liver tissue slices were prepared and the nuclei of hepatocytes were separated from Kunming mice according to the reported method. Liver tissue slices and hepatocyte nuclei were perfused with extracellular or intracellular fluids containing different concentrations of hydrogen peroxide (H2O2), and real-time imaging monitoring of biophotonic emission was carried out using an ultra-weak biophoton imaging system. Results: The results showed that the continuous perfusion with different concentrations of H2O2 (300, 400 and 500 μM, respectively) resulted in significant increase of biophotonic emissions, presenting a concentration-dependent effect in liver tissue slices and achieving the maximum effect at 400 μM, while the significant enhancement was found after 500 μM treatment on the hepatocyte nuclei. Conclusion: This study suggests that ROS generated in cells may achieve its physiological and pathological effects via biophotonic emissions, which provides a new quantum biological mechanism of ROS, while the detailed clarification requires further research.
Shengwang Chen, Zhenquan Ning, Wenlong Lin, Shanchang Chen
Published: 1 January 2022
Journal: Natural Science
Natural Science, Volume 14, pp 186-192; https://doi.org/10.4236/ns.2022.145018

Abstract:
Objective: To explore the application of intelligent blood temperature and humidity monitoring system in cold chain management of blood station. Methods: Through the monitoring of fifty sets of cold-chain equipment in the central blood station in Hezhou for 6 months, the differences between the management of the automatic temperature and humidity monitoring system and the manual management were compared in terms of real-time recording, equipment alarm, data storage, historical data traceability and data analysis. Results: Temperature and humidity automatic monitoring system can automatically real-time acquisition, transmission, storage and alarm according to the required time interval; meanwhile, historical data can be quickly exported and traced, data and charts can be analyzed, and the alarm is real-time and effective. Conclusion: The system can effectively monitor the process of blood cold chain in blood stations and play a key role in ensuring blood quality. It can be popularized and used in blood stations.
Philip M. Service
Published: 1 January 2022
Journal: Natural Science
Natural Science, Volume 14, pp 305-321; https://doi.org/10.4236/ns.2022.148028

Abstract:
Simulation was used to investigate the effects of population structure and migration on metrics of pairwise shared ancestry. Random and hierarchical structures, or migration geometries, were examined. Compared to panmictic populations, progress to all qualitative metrics of pairwise ancestry is delayed in structured populations. However, unless migration is very low, the time required is generally less than triple and often less than twice that required in a panmictic population of the same total size. Population structure also increases, to a similar degree, the time required for a population-wide most recent common ancestor (MRCA). As a result, the relationships between various qualitative metrics of pairwise shared ancestry and MRCA time are relatively unaffected by population structure. For example, the mean time to most recent shared ancestor (MRSA) with global sampling of pairs is 40% - 50% of the MRCA time for almost all simulated structures and migration levels. Quantitative pairwise genealogical overlap is strongly affected by population structure. With global sampling, pairwise quantitative overlap never approaches 1.0, as it does in panmictic populations; and instead eventually becomes stationary at much lower values. Possible implications of the present results for human pairwise shared ancestry are discussed. For globally sampled pairs, the longest time to most recent shared ancestor (MRSA) for humans is suggested to be approximately 2100 years before the present. If generation time is 30 years, then all humans are 69th, or closer, cousins. For people with recent European ancestry, the MRSA time may be only half as long, about 1000 years.
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