Characterization and Mapping of Soil-Landscape for Site-Specific Soil Management in Ayiba Watershed, Northern Highlands of Ethiopia by Weldemariam Seifu, Eyasu Elias, Girmay Gebresamuel, Gudina Legese Feyisa, Wolde Tefera

“…According to the finding, the soils were shallow to very deep in depth, moderately acidic to moderately alkaline in soil reaction, nonsaline in salinity, and clay to sandy loam in texture. The soils were found very low to low levels in most soil nutrients, very low to very high levels of base saturation, and deficient in zinc but have adequate levels of iron, copper, and manganese. …”
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Influence of Both Soil Properties and Geometric Parameters on Failure Mechanisms and Stability of Two-Layer Undrained Slopes by Shuangfeng Guo, Ning Li, Wenpeng Liu, Zongyuan Ma, Naifei Liu, Gao Lv

“…The stability of the two-layer undrained clay slopes should be given considerable attention since they are commonly observed in nature and in manmade structures, and they traditionally have low stability. …”
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Seepage strength of the dam soil in the area of a round-shaped culvert spillway by G. V. Orekhov, Tran Manh Cuong

“…The article proposes two structural approaches to prevent hydraulic fracturing: to change the cross-sectional shape of the culvert and to install a clay jacket around the spillway. Both approaches were tested numerically. …”
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Laboratory Model Tests on Consolidation Performance of Soil Column with Drained-Timber Rod by X. J. Chai, K. Deng, C. F. He, Y. F. Xiong

“…It can be expected that the drained-timber pile technique has a good application prospect for the construction of medium-small hydraulic structures and for the treatment of super soft clay.…”
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Investigation of Benzoic Acid Adsorption on to ODTMA-Bentonite by Response Surface Optimization by H. Kapucu, N. Yildiz, R. Gönülşen, A. Ç Çalimli

“…ODTMA-bentonite was synthesized by the incorporation of a quaternary ammonium surfactant (octadecyltrimethylammonium bromide) on to Ç ankiri sodium bentonite (Ç Na-B) with a cation-exchange capacity of 85 mequiv/100 g clay. A 2 4 full factorial central composite experimental design followed by multi-stage Monte-Carlo optimization was used in designing the experiments and analyzing the results. …”
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Soil and Groundwater Characteristics of a Legacy Spill Site by A Adoki

“…Where it occurs within the subsurface, the groundwater was observed to occur either within the lower part of the sandy clay or within the sands and gravels layer. The general direction of the groundwater flow within the area was observed to be from the North West to the South East. …”
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Laboratory Investigation on Optimum Selection of a Sand Control Method for an Interbedded Sandstone and Mudstone Reservoir by Shaofeng Hu, Lihua Wang, Yishan Lou, Yanfeng Cao, Wenbo Meng, Lei Zhang

“…In addition, a sensitivity analysis regarding formation particle size distribution (PSD), clay content, and mineral compositions is performed in the experiment under a moderate sand control mode. …”
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Physicochemical Properties and Fertility Assessment of Soils in Foumban (West Cameroon) by Vivien Piercy Lotse Tedontsah, Michel Bertrand Mbog, Gilbert François Ngon Ngon, Robert Christel Edzoa, Bernard Tassongwa, Dieudonné Bitom, Jacques Etame

“…An amendment of these soils in organic fertilizer (fluent, compost, and manure) would facilitate the formation of the clay-humus complex; thus, allowing good retention of water in the soil.…”
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Particle-size fractions-dependent extracellular enzyme activity in sediments and implications for resource allocation in a subtropical mangrove ecosystem by L. Luo, J.-D. Gu

“…Five enzymes involved in carbon (C), nitrogen (N), and phosphorus (P) cycling were analyzed in the sand, silt, and clay of sediments. Among these fractions, the highest activities of phenol oxidase (PHO), β-D glucosidase (GLU), and N-acetyl-glucosiminidase (NAG) were found in sand, and greater than bulk sediments of both intertidal zone (IZ) and mangrove forest (MG). …”
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Soil and Water Conservation Nexus Agricultural Productivity in Ethiopia by Wudu Abiye

“…The non-conserved land had lower soil organic matter, total N, and infiltration rate with higher bulk density, clay content, and available P. Soil organic matter content positively correlated with infiltration rate and total N, and it negatively correlated with soil bulk density. …”
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Phosphorus Adsorption and Its Correlation with Physicochemical Properties of Volcanic-Influenced Soils of Meupi-Awing in Northwest Cameroon by Mofor Nelson Alakeh, Njoyim Estella Buleng Tamungang, Fai Joel Alongifor

“…The capacity of the soil to adsorb phosphorus significantly correlated positively with amorphous Fe (r = 0.953 and p<0.05), free Fe (r = 0.984, 0.976 and p<0.05), free Al (r = 0.994 and p<0.01, r = 0.988 and p<0.05), and clay (r = 0.968 and p<0.05), which were the main parameters considered as predictors of phosphorus adsorption activities in the soils.…”
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Impact of Geological Factors on Marine Shale Gas Enrichment and Reserve Estimation: A Case Study of Jiaoshiba Area in Fuling Gas Field by Siyu Yu, Xixin Wang, Shaohua Li, Yuming Liu, Liming Xiao, Xin Liu, Wen Zhao, Jiaen Zhang

“…The results show that adsorbed gas content is positively correlated with total organic carbon and porosity; the larger specific surface area of samples with more clay minerals essentially contributes to shale gas enrichment. …”
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Direct and residual effect of various vermicompost on soil nutrient and nutrient uptake dynamics and productivity of four mustard Pak-Coi (Brassica rapa L.) sequences in organic fa... by N. Nurhidayati, Masyhuri Machfudz, Indiyah Murwani

“…Method A field experiment was conducted for four sequential planting periods of mustard Pak-Coi in silty clay Inceptisol. The experiment used a factorial randomized block design with two factors. …”
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Soil and Groundwater Characteristics of a Legacy Spill Site by A Adoki

“…Where it occurs within the subsurface, the groundwater was observed to occur either within the lower part of the sandy clay or within the sands and gravels layer. The general direction of the groundwater flow within the area was observed to be from the North West to the South East. …”
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A Unified Elastoplastic Model of Unsaturated Soils Considering Capillary Hysteresis by Tiantian Ma, Changfu Wei, Pan Chen, Huihui Tian, De'an Sun

“…Within this context, a constitutive model of unsaturated soils is developed by generalizing the modified Cam-Clay model. A hardening function is introduced, in which both the matric suction and the degree of saturation are explicitly included as hardening variables, so that the effect of hydraulic history on the mechanical response can be properly addressed. …”
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Erodibility and sedimentation potential of marly formations at the watershed scale by F. Rostami, S. Feiznia, M. Aleali, M. Heshmati, B. Yousefi yegane

“…The results indicated that Kashkan formation comprises siltstone, sandstone, shale, and conglomerate, and Grupi formation contains shale, clay, and limestone with a high erodibility potential. …”
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Physical and Mechanical Performance of Frozen Rocks and Soil in Different Regions by Junhao Chen, Lexiao Wang, Zhaoming Yao

“…The strength of the sandy soil strata is the highest, followed by the cohesive soil strata, and the strength of the mucky soil and the calcareous clay is the lowest. The strength of the frozen wall and the waterproof requirements must both be taken into account in the freezing design. …”
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Experimental Study on the Damage and Deterioration Behaviour of Deep Soft Rock under Water-Rock Interaction by Zenghui Zhao, Hao Liu, Xianzhou Lyu, Lei Wang, Zhongxi Tian, Jiecheng Sun

“…Therefore, the diffusion, migration, and particle expansion of illite and other clay minerals in mudstone are the main factors leading to the structural damage and strength reduction of weakly cemented rock under water-rock interactions.…”
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Origin and Distribution of Carbonate Cement in Tight Sandstones: The Upper Triassic Yanchang Formation Chang 8 Oil Layer in West Ordos Basin, China by Jin Lai, Guiwen Wang, Jing Chen, Shuchen Wang, Zhenglong Zhou, Xuqiang Fan

“…Dissolution of Ca-feldspars by organic acids-rich fluids, together with clay mineral transformations such as illitization of smectite, would provide Ca2+ and Mg2+ ions for carbonate cementation. …”
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Phosphorus Status, Inorganic Phosphorus Forms, and Other Physicochemical Properties of Acid Soils of Farta District, Northwestern Highlands of Ethiopia by Asmare Melese, Heluf Gebrekidan, Markku Yli-Halla, Birru Yitaferu

“…The moderate to high CEC suggests that besides kaolinite, the soils also contain expandable 2 : 1 clay minerals. Though the total P content was high, the available Olsen P content was very low or low in all soils except one. …”
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