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Journal articles on the topic 'Sqi'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Zeng, Haiyan, Cheng Zhi Liu, Qishan Zhao, Xing Liu, Qian Liu, and Dan Wang. "The Research on Sequence Stratigraphy of Shahezi Formation in Xujiaweizi Depression." Advanced Materials Research 787 (September 2013): 651–54. http://dx.doi.org/10.4028/www.scientific.net/amr.787.651.

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By using the data of core, geological log and seism and the theory of sedimentology and sequence stratigraphy , the sequence of Shahezi formation in Xujiaweizi depression are divided into five third-order sequence, they are SQ1, SQ2, SQ3, SQ4 and SQ5 up towards. The range of SQ1 is limited, influenced by palaeogeomorphology. SQ5 are greatly influenced by the late sedimentary denudation, now only in the northwest of the study area can be seen, other part is missing in this layer. SQ1, SQ2, SQ3 are onlap filled. There are defective area in SQ4 and SQ5.

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Pinno, Bradley, and Nicolas Bélanger. "Estimating trembling aspen productivity in the boreal transition ecoregion of Saskatchewan using site and soil variables." Canadian Journal of Soil Science 91, no. 4 (2011): 661–69. http://dx.doi.org/10.4141/cjss10082.

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Pinno, B. D. and Bélanger, N. 2011. Estimating trembling aspen productivity in the boreal transition ecoregion of Saskatchewan using site and soil variables. Can. J. Soil Sci. 91: 661–669. The productivity of trembling aspen, as expressed by site quality index (SQI), in natural stands growing on three different soil parent material types (fluvial, lacustrine and glacial till) in the boreal transition ecoregion of Saskatchewan was evaluated by using soil and site variables. The soil and site variables used were either general categorical variables, such as parent material and ecosite, or contin

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Yadav, M. Bhargava Narasimha, P. L. Patil, and M. Hebbara. "Comparative Studies on Soil Quality Index Estimation of a Hilly-Zone Sub-Watershed in Karnataka." Sustainability 15, no. 24 (2023): 16576. http://dx.doi.org/10.3390/su152416576.

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The assessment of soil quality aims to evaluate the utility and health of soils. In agricultural studies, soil productivity can be likened to soil quality. Evaluating the Soil Quality Index (SQI) solely based on surface properties offers an incomplete picture because productivity is influenced by both surface and subsurface characteristics, with the latter associated with pedogenic processes. Additionally, relying on weighted averages of soil properties from a soil profile for the SQI may offer an overall summary, but it can occasionally obscure variations that manifest across different soil h

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Zhang, Xiangling, Yan Li, Genmei Wang, et al. "Soil Quality Assessment in Farmland of a Rapidly Industrializing Area in the Yangtze Delta, China." International Journal of Environmental Research and Public Health 19, no. 19 (2022): 12912. http://dx.doi.org/10.3390/ijerph191912912.

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The comprehensive quality assessment of farmland soil is critical for agricultural production and soil ecological protection. Currently, there is no systematic method for conducting a comprehensive quality assessment of farmland soil; subsequently, as the most developed economic area in China, the comprehensive quality assessment of farmland soil in the Yangtze River Delta is lacking. We chose the farmland soil of Suzhou city as the research object. The soil fertility index (SFI) and soil environment index (SEI) were calculated with the membership function and Nemerow index. Finally, the compr

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González de Aledo-Castillo, José Manuel, Samira Serhir-Sgheiri, Neus Calbet-Llopart, et al. "Technical Evaluation of the COBAS EGFR Semiquantitative Index (SQI) for Plasma cfDNA Testing in NSCLC Patients with EGFR Exon 19 Deletions." Diagnostics 11, no. 8 (2021): 1319. http://dx.doi.org/10.3390/diagnostics11081319.

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The cobas® EGFR Test provides a semiquantitative index (SQI) that reflects the proportion of mutated versus wild-type copies of the EGFR gene in plasma. The significance of SQI as an indirect measure of the variant allele frequency (VAF) or mutated copies/mL remains unclear. The aim of this study was to evaluate the correlation of SQI with the VAF and the number of mutated copies/mL obtained by a digital droplet PCR (ddPCR) test in NSCLC samples. The study included 118 plasma samples from a retrospective cohort of 25 stage IV adenocarcinoma patients with EGFR exon 19 deletions (Ex19Del), obtai

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MUJIYO, Mujiyo, Suntoro SUNTORO, Restu Prasetyaning TYAS, Aktavia HERAWATI, and Hery WIDIJANTO. "Mapping Soil Quality in Various Land Uses as a Basis for Soil Management in Wonogiri, Indonesia." Journal of Settlements and Spatial Planning 11, no. 2 (2020): 127–35. http://dx.doi.org/10.24193/jssp.2020.2.06.

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Soil quality is closely related to environment because soil is not only viewed as a growing media for plants but also encompasses various environmental and health functions. It is important to know the quality of soil in order to keep it healthy, productive, and optimally functioning. This research aims to evaluate soil quality status in various land uses and to learn the land factors that are related to soil quality. Soil quality index (SQI) represents the soil quality status. SQI will then be used as the basis for soil management. A descriptive explorative research study was carried out in t

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Aravindh, Selvaraj, Chinnappan Chinnadurai, and Dananjeyan Balachandar. "Development of a soil biological quality index for soils of semi-arid tropics." SOIL 6, no. 2 (2020): 483–97. http://dx.doi.org/10.5194/soil-6-483-2020.

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Abstract. Agricultural intensification, an inevitable process to feed the ever-increasing population, affects soil quality due to management-induced changes. To measure the soil quality in terms of soil functioning, several attempts were made to develop a soil quality index (SQI) based on a set of soil attributes. However, there is no universal consensus protocol available for SQI, and the role of soil biological indicators in SQI is meagre. Therefore, the present work aims to develop a unitless soil biological quality index (SBQI) scaled between 0 and 10, which would be a major component of S

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Nadia, Ennaji, Ouakhir Hasan, Halouan Said, Mosaid Hassan, Abahrour Youness, and Abahrour Mohamed. "Soil quality index: a tool to detect the sensitivity to soil erosion in an agricultural catchment from the Middle Atlas of Morocco." IOP Conference Series: Earth and Environmental Science 1398, no. 1 (2024): 012004. http://dx.doi.org/10.1088/1755-1315/1398/1/012004.

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Abstract The present paper focuses on the application of the Soil Quality Index (SQI) within the Tiguert catchment, situated in the Middle Atlas of Morocco. The studied catchment, covering approximately 10.2 km², experiences a semi-arid climate with irregular rainfall and is designated as an agricultural area, making it an ideal site for studying the intricate interactions between natural processes and human activities. The SQI developed as part of the Mediterranean Desertification and Land Use (MEDALUS) project is tailored to the unique conditions of the Mediterranean region. In the case of t

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Lima, Gabriela C., Marx L. N. Silva, Diego A. F. de Freitas, Bernardo M. Cândido, Nilton Curi, and Marcelo S. de Oliveira. "Spatialization of soil quality index in the Sub-Basin of Posses, Extrema, Minas Gerais." Revista Brasileira de Engenharia Agrícola e Ambiental 20, no. 1 (2016): 78–84. http://dx.doi.org/10.1590/1807-1929/agriambi.v20n1p78-84.

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ABSTRACT This study aimed to determine and spatialize the soil quality index (SQI), in relation to chemical and physical attributes, and evaluate its use in the payment for environmental services in the Sub-Basin of Posses, Extrema-MG, Brazil, which represents the Atlantic Forest Biome. SQI values were influenced by both the replacement of native forests by stands of eucalyptus and by pastures and annual crops, reflecting in the reduction of soil quality in the sampled layer in the evaluated systems. The spatialization of SQI showed values ranging from 0.40 to 0.80, with some specific areas wi

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M., Sofia Sappia, Hakimi Naser, N. J. M. Colier Willy, and M. Horschig Jörn. "Signal quality index: an algorithm for quantitative assessment of functional near infrared spectroscopy signal quality." Biomedical Optics Express 11, no. 11 (2020): 6732–54. https://doi.org/10.1364/BOE.409317.

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We propose the signal quality index (SQI) algorithm as a novel tool for quantitatively assessing the functional near infrared spectroscopy (fNIRS) signal quality in a numeric scale from 1 (very low quality) to 5 (very high quality). The algorithm comprises two preprocessing steps followed by three consecutive rating stages. The results on a dataset annotated by independent fNIRS experts showed SQI performed significantly better (p<0.05) than PHOEBE (placing headgear optodes efficiently before experimentation) and SCI (scalp coupling index), two existing algorithms, in both quantitatively ra

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Wang, Nannan, Tibin Zhang, Hao Shi, Xianhua Zhang, Shiwen Wang, and Hongyi Li. "Evaluation of the Improvement Effect of Chemical Fertilizer Combined with Different Additives on Newly Built Paddy Soil." Agronomy 14, no. 8 (2024): 1706. http://dx.doi.org/10.3390/agronomy14081706.

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Exploring the effects of different additives on the improvement of newly cultivated farmland in mountainous areas can provide rational soil fertilization plans for regions lacking means of production. We conducted a paddy planting experiment in Ankang City, Shaanxi Province. Six treatments were set up, including sole chemical fertilizer (CK); fertilizer + bacteria agent (NB); chemical fertilizer + alginate bio-organic fertilizer (NO); fertilizer + fulvic acid biomass nutrient solution (NF); chemical fertilizer + acid soil conditioner (NC); fertilizer + silicon–calcium–magnesium–potassium ferti

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Vanegas Chacón, Eddi Alejandro, and Boris Augusto Méndez Paiz. "APLICACIÓN DEL íNDICE DE CALIDAD DE SUELOS EN PLANTACIONES FORESTALES DE GUATEMALA." Ciencia, Tecnología y Salud 3, no. 1 (2016): 47–54. http://dx.doi.org/10.36829/63cts.v3i1.151.

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La reforestación es una de las principales políticas del desarrollo forestal del país, el programa de Incentivos Forestales implementado por el Instituto Nacional de Bosques, incluye el establecimiento de plantaciones de especies nativas y exóticas, con múltiples fines. Sin embargo, en los ya diecinueve años desde su implementación, muchos fueron los aciertos y desaciertos, debido a la falta de investigación aplicada sobre la ecofisiología de las especies forestales y condición edáfica de los sitios. Esta investigación, presenta una aplicación del índice de Calidad de Suelos Forestales (SQ

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Li, Baochen, Rui Tong, Jianshe Kang, and Kuo Chi. "Bearing Fault Diagnosis Using Synthetic Quantitative Index-Based Adaptive Underdamped Stochastic Resonance." Mathematical Problems in Engineering 2021 (February 15, 2021): 1–10. http://dx.doi.org/10.1155/2021/8888079.

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Stochastic resonance is like a nonlinear filter to detect the weak bearing fault-induced impulses that submerged in strong noises. Signal-to-noise ratio (SNR) is often used as the index to evaluate the SR output, but the fault characteristic frequency (FCF) must be known in order to calculate SNR. A novel bearing fault diagnosis method called synthetic quantitative index-based adaptive underdamped stochastic resonance (SQI-AUSR) is proposed. The synthetic quantitative index (SQI) is composed of power spectrum kurtosis, kurtosis, margin index, and correlation coefficient. The SQI is independent

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Nguyen, Tri Phuoc, Tuan Trong Nguyen, Trung Hieu Quang, Dieu Ngoc Vo, and Mohammad Hassan Khooban. "Simple Quadratic Interpolation-Inspired Symbiosis Organisms Search Algorithm for Optimal Placement of Capacitors in Radial Distribution Networks with Different Loading Models." Complexity 2020 (September 29, 2020): 1–28. http://dx.doi.org/10.1155/2020/5493958.

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This paper proposes a novel hybrid algorithm based on a combination of the simple quadratic interpolation and the symbiosis organisms search algorithm (SQI-SOS) for finding the optimal location and size of capacitors in radial distribution networks. The objective of the problem is to minimize the system operating cost so that the net yearly savings of the system are increased. The effectiveness of the SQI-SOS has been tested on 33-, 69-, and 119-bus radial distribution networks with different load models. The obtained results from the test system by the proposed SQI-SOS are compared with those

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Nayan, Nazrul Anuar, and Hafifah Ab Hamid. "Evaluation of patient electrocardiogram datasets using signal quality indexing." Bulletin of Electrical Engineering and Informatics 8, no. 2 (2019): 519–26. http://dx.doi.org/10.11591/eei.v8i2.1289.

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Electrocardiogram (ECG) is widely used in the hospital emergency rooms for detecting vital signs, such as heart rate variability and respiratory rate. However, the quality of the ECGs is inconsistent. ECG signals lose information because of noise resulting from motion artifacts. To obtain an accurate information from ECG, signal quality indexing (SQI) is used where acceptable thresholds are set in order to select or eliminate the signals for the subsequent information extraction process. A good evaluation of SQI depends on the R-peak detection quality. Nevertheless, most R-peak detectors in th

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Nazrul, Anuar Nayan, and Ab Hamid Hafifah. "Evaluation of patient electrocardiogram datasets using signal quality indexing." Bulletin of Electrical Engineering and Informatics 8, no. 2 (2019): 519–26. https://doi.org/10.11591/eei.v8i2.1289.

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Electrocardiogram (ECG) is widely used in the hospital emergency rooms for detecting vital signs, such as heart rate variability and respiratory rate. However, the quality of the ECGs is inconsistent. ECG signals lose information because of noise resulting from motion artifacts. To obtain an accurate information from ECG, signal quality indexing (SQI) is used where acceptable thresholds are set in order to select or eliminate the signals for the subsequent information extraction process. A good evaluation of SQI depends on the R-peak detection quality. Nevertheless, most R-peak detectors in th

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Sari, Putri Tunjung, Indarto Indarto, Marga Mandala, and Bowo Eko Cahyono. "Mapping of Soil Quality Index (SQI) for Paddy Fields Using Sentinel-2 Imagery, Laboratory Analysis, and Principal Component Analysis." Geosfera Indonesia 6, no. 2 (2021): 173. http://dx.doi.org/10.19184/geosi.v6i2.24506.

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The use of intensive chemical inputs causes lower availability of nutrients, organic matter, cation exchange capacity, and soil degradation.Therefore, this study aims to assess the soil quality index (SQI) for paddy fields in Jember, East Java, Indonesia. Input data for this study consist of land cover (interpreted from the Sentinel-2 image), soil type, and slope maps. Furthermore, the procedure to calculate soil quality index (SQI) include (1) spatial analysis to create the land unit, (2) preparation of soil sampling, (3) soil chemical analysis, (4) principal component analysis (PCA), and (5)

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Tesfahunegn, Gebreyesus Brhane. "Soil Quality Assessment Strategies for Evaluating Soil Degradation in Northern Ethiopia." Applied and Environmental Soil Science 2014 (2014): 1–14. http://dx.doi.org/10.1155/2014/646502.

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Soil quality (SQ) degradation continues to challenge sustainable development throughout the world. One reason is that degradation indicators such as soil quality index (SQI) are neither well documented nor used to evaluate current land use and soil management systems (LUSMS). The objective was to assess and identify an effective SQ indicator dataset from among 25 soil measurements, appropriate scoring functions for each indicator and an efficient SQ indexing method to evaluate soil degradation across the LUSMS in the Mai-Negus catchment of northern Ethiopia. Eight LUSMS selected for soil sampl

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Semy, Khikeya, M. R. Singh, and Nishant Vats. "EVALUATION OF SOIL QUALITY OF A COAL MINE AFFECTED FOREST AT CHANGKI, NAGALAND, INDIA." Journal of Environmental Engineering and Landscape Management 29, no. 4 (2021): 381–90. http://dx.doi.org/10.3846/jeelm.2021.15848.

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The present study was conducted at a coal mining affected forest and a non-affected forest to analyze the seasonal changes in soil physico-chemical properties, incorporate additive and weighted soil quality index (SQI) to determine the soil quality and check the affected forest soil pollution status. Comparative SQI shows that the non-affected forest presented higher SQI in all the seasons (winter, spring, summer and autumn). However, in both the forest the seasonal additive and weighted SQI was categorised as autumn > summer > spring > winter and the overall SQI of the soil depth was

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Romaniuk, Romina, Lidia Giuffré, Alejandro Costantini, Norberto Bartoloni, and Paolo Nannipieri. "A comparison of indexing methods to evaluate quality of soils: the role of soil microbiological properties." Soil Research 49, no. 8 (2011): 733. http://dx.doi.org/10.1071/sr11147.

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The study evaluates and compares two procedures for selecting soil quality indicators (used for the construction of soil quality indices, SQI) by using diverse chemical, physical, and biological properties, and evaluates the role of soil microbiological properties in the construction of SQI. Different soil environments were selected from an extensive agricultural production site in the rolling pampa, Buenos Aires, Argentina. The plots included an undisturbed soil, a grassland soil, and continuous tilled soils with four different surface horizon depths (25, 23, 19, and 14 cm). Various propertie

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Shi, Xiaopeng, Xin Song, Guibin Zhao, Qifeng Yang, Lynette K. Abbott, and Fengmin Li. "Manure Application Is the Key to Improving Soil Quality of New Terraces." Sustainability 14, no. 22 (2022): 15166. http://dx.doi.org/10.3390/su142215166.

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Building level terraces is a crucial strategy for agriculture development in mountainous areas. There have been many studies on improving the soil quality of terraces, but the main factors involved are still unclear. We conducted an 18-year long-term experiment on a newly built terrace with four fertilization treatments: applied mineral nitrogen and phosphorus fertilizer (NP), applied sheep manure (M), applied sheep manure combined with mineral nitrogen and phosphorus fertilizer (MNP), and an unfertilized control (CK). A soil quality index (SQI) was used to evaluate the dynamic evolution of so

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Shi, Jianfei, Wenting Qian, Zhibin Zhou, Zhengzhong Jin, and Xinwen Xu. "Influence of Acid Mine Drainage Leakage from Tailings Ponds on the Soil Quality of Desert Steppe in the Northwest Arid Region of China." Land 12, no. 2 (2023): 467. http://dx.doi.org/10.3390/land12020467.

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As decision-making tools helping to improve the understanding of soil quality, soil quality assessment and heavy metal pollution assessment are very important for the remediation of heavy metal soil pollution. In the past, soil quality and heavy metal pollution have been studied separately, and few studies have combined them. The desert steppe in the Northwest Arid Region is an important pasture resource in China, and its soil safety has always been the focus of attention. Therefore, to understand the impact of tailing stockpiles on the soil quality of desert steppe, this study analyzed 18 ind

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Daverao, Sharyl Mae, Reuben James Rollon, Jason Gambuta, et al. "Quality of Soils in Soybean Producing Areas in Caraga Region." Journal of Ecosystem Science and Eco-Governance 5, no. 2 (2023): 26–34. http://dx.doi.org/10.54610/jeseg.v5i2.71.

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This study aims to determine the soil quality of selected soybean producing farms in the Caraga region using soil quality index (SQI) measurements. Five sites were selected in the municipalities of San Miguel, Surigao del Sur and Trento, Agusan del Sur. Three 10×10 m soil monitoring plots were established within soybean fields in each site. Within each monitoring plot, three composite samples were collected coming from 10 subsamples using a soil probe. SQI was calculated following three general steps, (1) selection of minimum dataset (MDS) via Principal Components Analysis (PCA), (2) Scoring o

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Gonzaga, Maria Isidoria Silva, Marcus Vinicius Cunha Bispo, Thiago Lima da Silva, Wallace Mello dos Santos, and Isaac Leal Santana. "Atlantic Forest soil as reference in the soil quality evaluation of coconut orchards (Cocos nucífera L) under different management." Semina: Ciências Agrárias 37, no. 6 (2016): 3847. http://dx.doi.org/10.5433/1679-0359.2016v37n6p3847.

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The evaluation of the soil quality is important to identify potential problems of soil degradation.The assessment of the soil quality requires the determination of several soil parameters and the integration of specific soil properties measurements into mathematical models, such as the soil quality index (SQI).The aims of this study were to: (i) determine the SQI for an Ultisol under a remnant of Atlantic Rain Forest; (ii) use the SQI for the Atlantic Rain Forest as a reference to evaluate the effects of conventional and integrated management in coconut orchards. It was hypothesized that the c

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Saleh, Ahmed M., Mohamed M. Elsharkawy, Mohamed A. E. AbdelRahman, and Sayed M. Arafat. "Evaluation of Soil Quality in Arid Western Fringes of the Nile Delta for Sustainable Agriculture." Applied and Environmental Soil Science 2021 (September 18, 2021): 1–17. http://dx.doi.org/10.1155/2021/1434692.

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Egypt is currently witnessing an extensive desert greening plan with a target of adding one and a half million feddans to the agricultural area. The present study evaluates the soil quality in the western desert fringes of the Nile Delta using three indicator datasets, which involve the total dataset (TDS), the minimum dataset (MDS), and the expert dataset (EDS). Three quality index models are included: the Additive Soil Quality Index (SQI-A), the Weighted Additive Soil Quality Index (SQI-W), and the Nemoro Soil Quality Index (SQI-N). Linear and nonlinear scoring functions are evaluated for sc

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LUO, ZHUZHU, YANTAI GAN, YINING NIU, et al. "SOIL QUALITY INDICATORS AND CROP YIELD UNDER LONG-TERM TILLAGE SYSTEMS." Experimental Agriculture 53, no. 4 (2016): 497–511. http://dx.doi.org/10.1017/s0014479716000521.

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SUMMARYSoil quality indicators (SQI) can be used as a synthetic tool for the assessment of the sustainability of agricultural systems. In this study, we developed SQI using minimum data set (MDS) and determined the response of SQI to long-term tillage systems. Field pea (Pisum sativum L.) and spring wheat (Triticum aestivum L.) were grown in alternate years at northwestern China, and soil attributes and crop productivity were measured 6 years after the initiation of the experiment. The MDS used to develop the SQI included soil physical (aggregate, bulk density, capillary porosity, field capaci

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Yang, Yang, Wang Ting, Liu Xiao, et al. "Immunoregulation of Shenqi Fuzheng Injection Combined with Chemotherapy in Cancer Patients: A Systematic Review and Meta-Analysis." Evidence-Based Complementary and Alternative Medicine 2017 (2017): 1–16. http://dx.doi.org/10.1155/2017/5121538.

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Background. Immunosuppression is a well-recognised complication of chemotherapy in cancer patients. We assemble the clinical evidence that SQI, an adjuvant drug for lung cancer and gastric cancer which was widely prescribed in China, interventions could increase objective tumour response and regulate immunity in cancer patients undergoing chemotherapy. Methods. We undertook a systemic review of the clinical data from randomised controlled trials up to September 2015 in which a SQI intervention was compared with a control arm in patients undergoing conventional chemotherapy. Revman 5.0 Software

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Arifin, Zainal, Yudhi Harini Bertham, Wiryono Wiryono, and Agus Martono H. Putranto. "Soil quality trends across successive stages of post-coal mining reclamation." Journal of Degraded and Mining Lands Management 12, no. 3 (2025): 7581–89. https://doi.org/10.15243/jdmlm.2025.123.7581.

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Soil Quality Index (SQI) assessment is a crucial parameter for evaluating the effectiveness of land reclamation objectives. This research aimed to analyze trends in soil quality changes across various stages of post-coal mining reclamation. This research was conducted in June 2024 at sites with varying soil ages at PT Inti Bara Perdana and in natural forest areas. This research employed descriptive-exploratory methods and involved open-field surveys. Sampling was conducted using purposive sampling at locations representative of the conditions at each site. Principal Component Analysis (PCA) wa

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Zhang, Longji, Shaochong Wei, Hang Xiang, and Xiaojun Yu. "Monocropping Degrades Soil Quality Index and Soil Multifunctionality Compared to Natural Grasslands and Restored Shrubland in China’s Qilian Mountains (Based on Single-Year Sampling)." Agronomy 15, no. 6 (2025): 1461. https://doi.org/10.3390/agronomy15061461.

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As the ecological security barrier in northwestern China, understanding how natural grassland (NG) utilization pattern transformation in the northern Qilian foothills affects soil quality and ecosystem multifunctionality supports regional ecosystem management. The study compared soil chemical and biological properties, soil quality index (SQI), and soil ecosystem multifunctionality (SMF) among four grassland utilization patterns in the northern foothills of the Qilian Mountains, Gansu Province, China. Soil samples were collected in early October 2024 following crop harvest from the following s

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Ellur, Rajath, Ananthakumar Maddur Ankappa, Subramanian Dharumarajan, et al. "Soil Quality Assessment and Its Spatial Variability in an Intensively Cultivated Area in India." Land 13, no. 7 (2024): 970. http://dx.doi.org/10.3390/land13070970.

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Intensive agricultural practices lead to a deterioration in soil quality, causing a decline in farm productivity and quality, and disturbing the ecosystem balance in command areas. To achieve sustainable production and implement effective soil management strategies, understanding the state and spatial variability of soil quality is essential. The study aims to enhance the understanding of soil quality variability and provide actionable insights for sustainable soil management. In this regard, principal component analysis (PCA) and digital soil mapping were used to assess and map the spatial va

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Khedr, Safaa, Sheta AS, El-Beltagy A, and Abd-Elwahed MS. "Assessment of soil quality in irrigated arid lands under organic agriculture systems." International Journal of Agricultural Science and Food Technology 10, no. 1 (2024): 032–40. http://dx.doi.org/10.17352/2455-815x.000204.

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The process of evaluating the soil quality is complex and is impacted by a variety of physical, chemical, and biological indicators as well as how they interact over time, particularly throughout different cultivation periods. The main objective of the current investigation is to examine how various organic farming practices affect the soil quality indicators at selected organic farms throughout various cultivation times. The study sites in Egypt were selected to represent two great soil groups (Torripsamments and Haplotorrerts). Moreover, the selected farms have different organic cultivation

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Al-horaibi, Sultan A., Abdel-Basit Al-Odayni, Mohammed ALSaeedy, et al. "Exploring DSSC Efficiency Enhancement: SQI-F and SQI-Cl Dyes with Iodolyte Electrolytes and CDCA Optimization." Molecules 28, no. 20 (2023): 7129. http://dx.doi.org/10.3390/molecules28207129.

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This investigation delves into the potential use of halogen bonding to enhance both the short-circuit current (JSC) and overall efficiency of dye-sensitized solar cells (DSSCs). Specifically, we synthesized two distinct dyes, SQI-F and SQI-Cl, and characterized them using FT-IR, 1HNMR, 13C NMR, and mass spectroscopy. These dyes are based on the concept of incorporating halogen atoms within unsymmetrical squaraine structures with a donor–acceptor–donor (D-A-D) configuration. This strategic design aims to achieve optimal performance within DSSCs. We conducted comprehensive assessments using DSSC

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Jiang, Mingliang, Ligang Xu, Xiaobing Chen, Hua Zhu, and Hongxiang Fan. "Soil Quality Assessment Based on a Minimum Data Set: A Case Study of a County in the Typical River Delta Wetlands." Sustainability 12, no. 21 (2020): 9033. http://dx.doi.org/10.3390/su12219033.

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Purpose: The Yellow River delta boasts rich land resources but lacks fresh water and exhibits poor natural conditions. To rationally develop and utilize the land resources therein, it is necessary to evaluate the soil quality. Methods: Adopting specific screening conditions, principal component analysis (PCA) was used to construct a minimum data set (MDS) from 10 soil indicators. Then, a complete soil quality evaluation index system of the Yellow River delta was developed. The soil quality comprehensive index (SQI) method was used to assess the soil quality in the Kenli District, and the soil

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CHEN, ZHENXUE, CHENGYUN LIU, FALIANG CHANG, XUZHEN HAN, and KAIFANG WANG. "ILLUMINATION PROCESSING IN FACE RECOGNITION." International Journal of Pattern Recognition and Artificial Intelligence 28, no. 05 (2014): 1456011. http://dx.doi.org/10.1142/s0218001414560114.

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Changes in light intensity and angle present a major challenge to the creation of reliable face recognition systems. The existence of bright regions and dark regions has been shown to have a serious negative impact on the performance of face recognition systems. This paper proposes a solution to this problem based on self-quotient image (SQI) processing method. In this method, bright and dark areas are processed separately without changing the essential characteristics of the image of the face. The dark and light areas are processed separately by SQI. Experimental results indicate that this Si

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Huang, Lei, and Liangyi Rao. "Evaluation of Landscape Soil Quality in Different Types of Pisha Sandstone Areas on Loess Plateau." Forests 16, no. 4 (2025): 699. https://doi.org/10.3390/f16040699.

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Severe soil erosion and land productivity degradation caused by inadequate vegetation cover pose significant challenges to regional ecological protection and sustainable development. To assess changes and variations in soil quality, three sample areas with different distinct texture characteristics were selected from the Pisha sandstone region located northeastern of the Loess Plateau. The total data set (TDS) was determined through sampling experiments, and the minimum data set (MDS) was established using principal component analysis. A Random Forest (RF) machine learning model was applied to

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Bedolla-Rivera, Héctor Iván, María de la Luz Xochilt Negrete-Rodríguez, Miriam del Rocío Medina-Herrera, et al. "Development of a Soil Quality Index for Soils under Different Agricultural Management Conditions in the Central Lowlands of Mexico: Physicochemical, Biological and Ecophysiological Indicators." Sustainability 12, no. 22 (2020): 9754. http://dx.doi.org/10.3390/su12229754.

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The Bajío—Mexico’s central lowlands—is a region of economic importance because of its agricultural industry. Over time, agricultural practices have led to soil deterioration, loss of fertility, and abandonment. In this study, six agricultural soils were analyzed: AGQ, CTH, CTJ, JRM, CRC, and CYI, and used to develop a soil quality index (SQI) that includes the use of physicochemical, biological, and ecophysiological indicators to differentiate soil quality. Principal component analysis (PCA) was used, reducing the indicators from 46 to 4, which represents 80.4% of data variability. It was impl

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Rana, Sohel, Ziheng Xu, Razia Sultana Jemim, et al. "Soil Quality Assessment in Tourism-Disturbed Subtropical Mountain Meadow Areas of Wugong Mountain, Central Southeast China." Life 12, no. 8 (2022): 1136. http://dx.doi.org/10.3390/life12081136.

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Meadow soil is a vital ecosystem component and can be influenced by meadow vegetation. Evaluating soil quality in mountain meadows subjected to different levels of tourism disturbance is essential for scientific research, ecological restoration, and sustainable management. This study aimed to evaluate meadow soil quality at different tourism-disturbance levels and attempted to establish a minimum data set (MDS) with compatible indicators for soil quality assessment of subtropical mountain meadows. We analyzed fifteen soil physical, chemical, and biological indicators in control check (CK), lig

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NUSANTARA, ROSSIE WIEDYA, ASRIPIN ASPAN, ABDUL MUJID ALHADDAD, et al. "Peat soil quality index and its determinants as influenced by land use changes in Kubu Raya District, West Kalimantan, Indonesia." Biodiversitas Journal of Biological Diversity 19, no. 2 (2018): 535–40. http://dx.doi.org/10.13057/biodiv/d190229.

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Nusantara RW, Aspan A, Alhaddad AM, Suryadi UE, Makhrawie, Fitria I, Fakhrudin J, Rezekikasari. 2018. Peat soil quality index and its determinants as influenced by land use changes in Kubu Raya District, West Kalimantan, Indonesia. Biodiversitas 19: 535-540. Tropical peatland is continuously damaged in large area in Indonesia, caused by deep and wide drains which change the ecosystem. This research was conducted to evaluate the soil quality index (SQI) based on peatland use. The research was conducted in Kubu Raya District, West Kalimantan Province, in secondary peat forest, shrubland, oil pal

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Chaudhry, Hiba, Hiteshkumar Bhogilal Vasava, Songchao Chen, et al. "Evaluating the Soil Quality Index Using Three Methods to Assess Soil Fertility." Sensors 24, no. 3 (2024): 864. http://dx.doi.org/10.3390/s24030864.

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Soil health plays a crucial role in crop production, both in terms of quality and quantity, highlighting the importance of effective methods for preserving soil quality to ensure global food security. Soil quality indices (SQIs) have been widely utilized as comprehensive measures of soil function by integrating multiple physical, chemical, and biological soil properties. Traditional SQI analysis involves laborious and costly laboratory analyses, which limits its practicality. To overcome this limitation, our study explores the use of visible near-infrared (vis-NIR) spectroscopy as a rapid and

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Zhou, Yu, Yingcheng Fan, Guang Lu, et al. "Assessment of soil quality for guided fertilization in 7 barley agro-ecological areas of China." PLOS ONE 17, no. 1 (2022): e0261638. http://dx.doi.org/10.1371/journal.pone.0261638.

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Soil quality is the basis for the development of sustainable agriculture and may be used for evaluating the sustainability of soil management practices. Soil quality status and integrated soil quality index (SQI) in sampled 97 farmlands distributed in 7 barley agro-ecological areas of China were analyzed by using 13 soil chemical parameters. The results showed six principal components totally explained 72% variability for the 13 parameters and identified 9 parameters (includes pH, NH4+-N, NO3--N, available P, available K, exchangeable Mg, DTPA-Fe, DTPA-Cu and Cl-) with high factor loading valu

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Maurya, Alok, Vikash Kumar Yadav, Thokchom Dorenchand Singh, Abhishek Maurya, and Vivek Kumar Singh. "Evaluating the Soil Quality of Forest, Broom Grass and Cultivated Land Uses in Hilly Agro-ecosystem, Meghalaya Plateau, North East India." International Journal of Environment and Climate Change 13, no. 6 (2023): 433–43. http://dx.doi.org/10.9734/ijecc/2023/v13i61841.

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Soil quality can be inferred from selected chemical soil indicators and it may be altered under the impact of changes in land uses (LUS). For achieving sustainable management practices the soil quality indicators (SQI) should be measured. The objective of this study was to compare the soil quality index in forest, Broom and cultivated land use systems in some areas of Meghalaya, using a completely randomized design at nine different land uses containing Mixed-Forest, Pine-Forest, Broom-Grass, Rice-Potato, Rice-Cabbage, Upland Rice-Monocrop, Lowland Rice-Monocrop, upland pineapple crop and slas

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Sato, Shohei, Takuma Hiratsuka, Kenya Hasegawa, et al. "Screening for Major Depressive Disorder Using a Wearable Ultra-Short-Term HRV Monitor and Signal Quality Indices." Sensors 23, no. 8 (2023): 3867. http://dx.doi.org/10.3390/s23083867.

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To encourage potential major depressive disorder (MDD) patients to attend diagnostic sessions, we developed a novel MDD screening system based on sleep-induced autonomic nervous responses. The proposed method only requires a wristwatch device to be worn for 24 h. We evaluated heart rate variability (HRV) via wrist photoplethysmography (PPG). However, previous studies have indicated that HRV measurements obtained using wearable devices are susceptible to motion artifacts. We propose a novel method to improve screening accuracy by removing unreliable HRV data (identified on the basis of signal q

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Hultman, B., M. Löwén, U. Karlsson, P. H. Li, and L. Molina. "Prediction of Activated Sludge Sedimentation Based on Sludge Indices." Water Science and Technology 24, no. 7 (1991): 33–42. http://dx.doi.org/10.2166/wst.1991.0182.

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Present requirements on nitrogen removal in Sweden make it necessary to increase the sludge concentration in the aeration basin of the activated sludge process. A project has started with the purpose to evaluate the possibilities to use different sludge indices to predict activated sludge sedimentation. Based on literature and experimental studies, it is shown that the diluted sludge volume index (DSVI), the sludge quality index (SQI) and the stirred specific volume index (SSVI3.5) are suitable to predict the sedimentation performance. The traditional sludge volume index (SVI) is not as useful

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Zhao, Li, Min Fan, Jie Song, et al. "A Preliminary Study on the Determination of the Fertilization Tolerance of an Entisol in the Yuanmou Dry-Hot River Valley Based on Soil Qualities in Plot Scale." Sustainability 13, no. 7 (2021): 3626. http://dx.doi.org/10.3390/su13073626.

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Using field slope farmland plots, this study planted the typical crop of maize (Zea mays L.) and investigated the effects of varied chemical fertilizer (organic compound fertilizer of potassium nitrate, containing 17% each of nitrogen, phosphorus, and potassium) application levels (0.5 times the common fertilizer amount (CK, 0.75 t·hm−2 to 2.5 CK) on the soil fertility in the Yuanmou dry-hot River Valley. The results showed that the soil chemical properties, microbial properties, and enzyme activities increased with the increase of fertilizer application levels from CK to 2.0 CK. However, a de

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Xing, Yingying, Ning Wang, Xiaoli Niu, Wenting Jiang, and Xiukang Wang. "Assessment of Potato Farmland Soil Nutrient Based on MDS-SQI Model in the Loess Plateau." Sustainability 13, no. 7 (2021): 3957. http://dx.doi.org/10.3390/su13073957.

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Soil nutrients are essential nutrients provided by soil for plant growth. Most researchers focus on the coupling effect of nutrients with potato yield and quality. There are few studies on the evaluation of soil nutrients in potato fields. The purpose of this study is to investigate the soil nutrients of potato farmland and the soil vertical nutrient distributions, and then to provide a theoretical and experimental basis for the fertilizer management practices for potatoes in Loess Plateau. Eight physical and chemical soil indexes were selected in the study area, and 810 farmland soil samples

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Berry, Donna Lynn, Fangxin Hong, Barbara Halpenny, et al. "Electronic self-report assessment for cancer: Results of a multisite randomized trial." Journal of Clinical Oncology 30, no. 15_suppl (2012): 9008. http://dx.doi.org/10.1200/jco.2012.30.15_suppl.9008.

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9008 Background: Attending to symptoms and side effects promotes safe and effective delivery of cancer therapies. Providing focus to the patient’s report in the clinic can efficiently address the most important concerns, without extending visit times. The web-based electronic self report assessment for cancer (ESRA-C) and clinician summary has been shown to improve patient-clinician communication about symptoms and quality of life issues (SQI). The purpose of this trial was to evaluate the impact of an enhanced ESRA-C intervention (ESRA-C INT) on symptom outcomes. Methods: Patients (planned N=

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Jiang, Hongtao, Xiaojia Li, Chunrong Guo, et al. "Evaluation of soil quality in Inner Mongolia desert steppe—A case study of Siziwang Banner." PLOS ONE 18, no. 8 (2023): e0290301. http://dx.doi.org/10.1371/journal.pone.0290301.

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As a natural ecological fragile region, the vast desert steppe in the Inner Mongolia has a developed animal husbandry, and thus posed great impacts on soil quality. In order to accurately evaluate the current situation of soil quality in the desert steppe, it is therefore imperative to adopt a suitable method to effectively assess the soil quality in the region. In this study, the minimum data set (MDS) was established with the help of principal component analysis, Norm value calculation, and correlation analysis, and four indicators, including organic matter, sand grains, soil erosion degree,

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Liu, Li-An, Ren-Min Yang, Xin Zhang, Chang-Ming Zhu, and Zhong-Qi Zhang. "A Mechanistic Approach for Modeling Soil Development Using Remotely Sensed Data Collected from Invaded Coasts." Remote Sensing 13, no. 4 (2021): 564. http://dx.doi.org/10.3390/rs13040564.

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The invasion of the exotic species Spartina alterniflora (S. alterniflora) has profoundly influenced coastal soil development in China. Accurate assessment and monitoring of invasion-driven development in coastal soils requires the development of reliable methods to support the sustainable governance of coastal ecosystems. A space-for-time substitution method and a stratified random sampling strategy were utilized in this study to obtain soil data from 15 sites at three depth intervals (0–30, 30–60 and 60–100 cm) to obtain a total of 45 soil samples. We developed a mechanistic approach to mode

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Gayan, A., D. J. Nath, B. Bhattacharyya, and N. Dutta. "Assessment of soil quality indicators under rice ecosystem of Assam, India." Journal of Environmental Biology 41, no. 6 (2020): 1655–64. http://dx.doi.org/10.22438/jeb/41/6/si-246.

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Aim: To assess the soil quality indices and its impact on rice yield in Upper Brahmaputra Valley Zone of Assam. Methodology: Seventy-three numbers of geo referenced soil samples were collected from the rice ecosystems and analysed for twenty-one soil physical, chemical and biological parameters. The soil quality indices (SQI) were developed using statistical tools like principal component analysis (PCA) techniques and expert opinion (EO). Relative soil quality index (RSQI) was also developed for grouping the soils into categories. Correlation matrices were drawn between different soil quality

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Hu, Zhenqi, Shuguang Liu, and Yuling Gong. "Evaluation of Soil Quality and Maize Growth in Different Profiles of Reclaimed Land with Coal Gangue Filling." Land 10, no. 12 (2021): 1307. http://dx.doi.org/10.3390/land10121307.

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Reclaiming subsidence and waterlogged zones caused by coal mining to maintain food and feed supplies is an urgent issue in China. Utilizing coal gangue (CG) as a filling matrix to construct different profiles of reclaimed land in coal mining subsidence has downsides, e.g., due to its low conservative capability of water-fertilizer and crop yield, its lack of quantitative evaluation of soil quality, and its limiting factors of crop growth. Quantifying the soil quality by principal component analysis (PCA), obtaining key soil indicators, and a scoring system can clarify the influence of the prof

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