Welcome to send your manuscript to: sciencepub@gmail.com

No.

Titles / Authors

Full

Text

No.

1

Synthesis and Characterization of Barium Titanate Nanoparticles via the Sol-Gel Method for Advanced Piezoelectric Applications

Sania Zahid¹, Bareera Zahid¹, Muhammad Ali Raza²

¹Department of Physics, University of Agriculture Faisalabad, Pakistan

²Department of Physics, Govt College University, Faisalabad, Pakistan

*Corresponding author: saniazahid91@gmail.com

ABSTRACT: Barium titanate (BaTiO3) is widely recognized for its exceptional piezoelectric properties, rendering it indispensable in the development of high-performance receivers and diverse transducers. In this study, the Sol-gel method was meticulously employed for the preparation of barium titanate, with particular attention paid to the temperature conditions. The synthesis of the barium titanate gel was achieved through a precise reaction between solutions of titanium (IV) isopropoxide and barium acetate. The subsequent conversion of the gels to barium titanate was realized through a combination of drying and the meticulously controlled calcination technique. Throughout the sintering process of the compacts, the densification rate was observed to follow the sequence: BaTi4O9 < Ba2 TiO4 < BaTiO3 < BaTi2O5. Comprehensive characterization of the titanate powders and the barium titanate gels was performed using advanced techniques such as scanning electron microscopy (SEM), X-ray diffraction (XRD), and chemical analysis. The analysis indicated the presence of a negligible contaminant impact, ensuring the production of ultrafine, phase-pure barium titanate powder. Notably, the synthesized barium titanate exhibited the highest reflectivity among the materials investigated, positioning it as a compelling candidate for self-pumped phase conjugation applications. Additionally, the observed Positive Temperature Coefficient (PTC) in the polycrystalline barium titanate signifies its potential as a valuable material for thermistors and automated electrically heated systems. This research underscores the significance of the Sol-gel method in tailoring the properties of barium titanate nanoparticles and underscores their immense potential for an array of advanced piezoelectric applications.

Key words: Barium titanate (BaTiO3), nanotechnology, Sol-gel method

[Sania Zahid, Bareera Zahid, Muhammad Ali Raza. Synthesis and Characterization of Barium Titanate Nanoparticles via the Sol-Gel Method for Advanced Piezoelectric Applications. Nat Sci 2023;21(11):1-13]. ISSN 1545-0740 (print); ISSN 2375-7167 (online). http://www.sciencepub.net/nature. 01. doi:10.7537/marsnsj211123.01.

Keywords: Synthesis; Characterization; Barium; Titanate; Nanoparticle; Piezoelectric; Application

Full Text

1

2

Climatic Conditionality of Soil Washout from the Surface of Mountain River Basins and its Mapping Using GIS Technologies

F. Khikmatov 1 , K.R. Rakhmanov 1 , Kh.N. Magdiev 2

¹ National University of Uzbekistan, Tashkent, University street-4, 100174, Uzbekistan

2 Cadastre Agency of the Republic of Uzbekistan, Tashkent, Chuponota str. 100097, Uzbekistan

hasan.magdiev@gmail.com, hikmatov_f@mail.ru

Abstract. The article discusses the issues of studying climatic conditionality and mapping the intensity of soil loss from the surface of catchment areas of mountain rivers in Uzbekistan and adjacent territories using GIS technologies. Data on the runoff of suspended sediment from rivers were used as source materials. Flush maps were compiled separately for the Chirchik, Akhangaran, Kashkadarya and Surkhandarya river basins. It is shown that the highest values of washout intensity are confined to altitudes of 1100-1700 meters, and their lowest values correspond to altitude intervals below 1100 and above 2500 meters. The reasons for the differences in the zonal intensity of soil loss have been identified.

[F. Khikmatov, K.R. Rakhmanov , Kh.N.Magdiev. Climatic Conditionality of Soil Washout from the Surface of Mountain River Basins and its Mapping Using GIS Technologies. Nat Sci 2023,23(11):14-19]. ISSN 1545-0740 (print); ISSN 2375-7167(online). http://www.sciencepub.net/nature  02. doi:10.7537/marsnsj211123.02.

Keywords: river, river basin, climatic conditions, catchment area, soils, washout module, altitudinal zonation, belt washout, GIS technologies, mapping.

Full Text

2

3

Serum and urinary NGAL and Cystatin C levels as biomarker tools for diagnosis of both AKI and CKD: A histobiochemical comparative study

Mustafa M Sinna1, Faris MN Altaf1, Osama F Mosa2, Naser A. ElSawy*3

1Anatomy Department, College of Medicine, Umm Al Qura University, El-Abidia, Makkah, KSA.

2 Health Sciences College at Leith, Umm Al Qura University, El-Abidia, Makkah, KSA.

3Department of Anatomy & Embryology Faculty of Medicine, Zagazig University, Egypt.

*Corresponding to:  naser_elsawy@ymail.com

Abstract: Introduction: Acute kidney injury (AKI) has a high global incidence with observable complications in critically ill patients. Long-term disease and medication complexity contribute to devastating chronic kidney disease (CKD) and diminish quality of life. Establishing new biomarkers would guide patient care and facilitate novel therapeutics development. Methods: Serum and urinary levels of creatinine, CysC, and NGAL were estimated in 86 renal patients and compared with healthy controls for AKI and CKD categorization. Creatinine and Cystatin C (CysC) measurements were used to estimate GFR. Biopsy tissues were prepared for light microscopy for further characterization. Patients’ demographic data were used in group association study. Results: Thirty-six patients met the criteria for AKI and 50 for CKD. Mean values of serum CysC were higher than controls but similar in both disease states, while urine levels were slightly high in CKD patients and remained steady by the end of follow-up (EF-Up). Further, a 2.7-fold and 5.5-fold increase in serum NGAL were observed in AKI and CKD, respectively, and a dramatic 7.0-fold reduction in AKI group at EF-Up. Similarly, urine NGAL for AKI and CKD increased 3-fold and 6-fold respectively on admission, which multiplied to 7.3-fold and 10.7-fold at EF-Up. ROC assessment curve revealed a relatively higher NGAL performance at good predictive values than CysC (p< 0.009). Conclusions: We showed a higher urine NGAL and CysC sensitivity and specificity than their serum counterparts, providing a powerful discriminative tool between AKI and CKD. CysC, however, displayed less sensitive performance than NGAL, indicating effects by enigmatic non-specific factors.

Abbreviations: AKI (Acute kidney injury); CKD (Chronic kidney injury); CysC (Cystatin C); Neutrophil gelatinase associated lipocalin (NGAL).

[Mustafa M Sinna, Faris MN Altaf, Osama F Mosa, Naser A. ElSawy. Serum and urinary NGAL and Cystatin C levels as biomarker tools for diagnosis of both AKI and CKD: A histobiochemical comparative study.  Life Sci J 2023;20(11):18-29]. ISSN 1097-8135 (print); ISSN 2372-613X (online). http://www.lifesciencesite.com. 04. doi:10.7537/marslsj201123.04.

Keywords: Acute kidney injury (AKI), chronic kidney disease (CKD), Biomarkers, Cystatin C (CysC), NGAL

Full Text

3

4

DEVELOPMENT OPPORTUNITIES OF THE CITIES OF ANDIJAN REGION

Kasimov Kh.S.

Doctoral Student of  National University of Uzbekistan

Department of Economic and social geography, National University of Uzbekistan, Tashkent, Uzbekistan.

Abstract: This article analyzes the development possibilities of cities, their current specialization, and future development possibilities on the example of cities in the Andijan region of the Republic of Uzbekistan. In order to determine the poles of growth of regional cities, their rating was developed in order to assess their existing opportunities.

[Kasimov Kh.S. DEVELOPMENT OPPORTUNITIES OF THE CITIES OF ANDIJAN REGION. Nat Sci 2023,23(11):27-33]. ISSN 1545-0740 (print); ISSN 2375-7167 (online). http://www.sciencepub.net/nature 04. doi:10.7537/marsnsj211123.04.

Keywords: geography of cities, infrastructure of cities, rating of cities, function of cities, specialization, industry, service, Uzbekistan, Andijan region

Full Text

4

5

Genetic variability among different traits of Convolvulous arvensis

Muhammad Abu Bakar Jaffar^1*, Qurban Ali², Muhammad Zeeshan Ali¹, Muhammad Waqar Anwar¹, Farooq Ahmad Khan¹ and Idrees Ahmad Nasir²

1.       Department of Plant Breeding and Genetics, University of Agriculture Faisalabad, Pakistan

2.       Centre of Excellence in Molecular Biology, University of the Punjab Lahore, Pakistan

Corresponding author’s email: abjafar3@gmail.com

Abstract: Weeds caused an adverse effect on crop plant yield and also act as major competitor to crop plants. Convovulous arvensis is an important weed plant that caused loss in various crop plant species as it enroll the whole plant body and compete for water, nutrients, minerals and even sunlight. A study was conducted at Centre of Excellence in Molecular Biology, University of the Punjab Lahore, Pakistan during February 2016. Data on various morphological traits was recorded by collecting C. arvensis from three different locations. Significant differences were found among the locations and traits studied. GGEbiplot indicated that the plant growth and development of C. arvensis plants was found higher at location 1 as compared with other both locations. Strong and significant correlation was reported among most of studied traits. It was suggested that the C. arvensis must be controlled to reduce crop plant yield losses through the use of manual, chemical and agronomic practices for removal of weeds. The use of transgenic crop plants may be an advantage for improving yield and production of crop plants.

[Jaffar MAB, Ali Q, Ali MZ, Anwar MW, Khan FA and Nasir IA. Genetic variability among different traits of Convolvulous arvensis. Nat Sci 2023;21(11):34-40]. ISSN 1545-0740 (print); ISSN 2375-7167 (online).  http://www.sciencepub.net/nature. 05.doi:10.7537/marsnsj211123.05.

Keywords: Convovulous arvensis, weeds, locations, correlation, genetic variability, GGEbiplot

Full Text

5

6

Effectiveness of agricultural extension services to crop farmers of Khartoum State, Sudan

Abdel Raouf Suleiman Bello

*Department of Agricultural Extension and Rural Society, College of Food and Agriculture Sciences, King Saud University, Kingdom of Saudi Arabia, and Department of Agricultural Extension and Rural Development, Faculty of Agriculture, University of Khartoum, Sudan

Abstract: This study was carried to investigate the role of extension service in raising crops total product in Ombadda locality of Khartoum State, Sudan. Simple random sampling procedure was used to select 80 respondents from the four villages purposively selected.  A structured interview schedule and observation were used to collect the primary data needed to meet the objectives of this study. Frequency distribution and T-test procedures were used for data analysis and interpretation. Results obtained revealed the extension package and inputs production provided there contributed positively in adopting new technologies and increasing crops production and farm income. T-test analysis showed significant difference between beneficiary and non-beneficiary groups with respect to crop production. A further research is recommended to identify the farmers’ needs and suggest relevant agricultural extension intervention strategies to be adopted in the study area.

 [Bello, AS. Effectiveness of agricultural extension services to crop farmers of Khartoum State, Sudan. [Jaffar MAB, Ali Q, Ali MZ, Anwar MW, Khan FA and Nasir IA. Genetic variability among different traits of Convolvulous arvensis. Nat Sci 2023;21(11):41-47]. ISSN 1545-0740 (print); ISSN 2375-7167 (online).  http://www.sciencepub.net/nature. 06. doi:10.7537/marsnsj211123.06.

Key words:  Agricultural extension, extension packages, crop production, Sudan

Full Text

6