Resilience of Spanish Firms: a comparative analysis of large and small businesses in the face of 008 financial crisis and COVID-19 by Jose Sevilla, Cristina Ruiz-Martin, Juan Jose Nebro, Adolfo Lopez-Paredes

“…Applying the dynamic organizational resilience model—Absorption, Adaptation, and Learning—we propose that large Spanish companies, having weathered the 2008 financial crisis, were better equipped for COVID-19. …”
Get full text

Typology of Sounding Curves and Lithological 1D Models of Mineral Prospecting and Groundwater Survey within Crystalline Basement Rocks in the East of Cameroon (Central Africa) Usin... by Daniel Hervé Gouet, Arsène Meying, Harlin Leonid Ekoro Nkoungou, Stephane Patrick Assembe, Philippe Njandjock Nouck, Théophile Ndougsa Mbarga

“…These models are characterized by the presence of conductive layers and fractured/weathered granites derived from tectonic activities of the region. …”
Get full text

Hydrogeochemistry of Surface and Ground Water in Alatening Village, Northwest Region, Cameroon by Kahnji Iren Njoyim, Lucas Kengni, Margaret Awah Tita, Estella Njoyim Buleng Tamungang, Vitalis Fonfo Fonzenyuy, Bertrand Tatoh Aziwo

“…The petrographic studies revealed trachyte and benmoreite, and weathering of minerals from these rocks into the soil leads to the water-rock interaction, thus water hydrogeochemistry. …”
Get full text

A Study on Excavation Characteristics of Tunnel with Upper-Soft Lower-Hard Stratum by Jun Feng, Hui-juan Yang, Yu Zhang

“…In view of the geological environment, in which the upper part is the “soft” layer of completely weathered siliceous rock and the lower part is the “hard” layer of weakly weathered limestone, the rail surface line is designed to pass through the interface between the upper “soft” layer and lower “hard” layer. …”
Get full text

Effect of Drying-Wetting Cycles on Engineering Properties of Expansive Soils Modified by Industrial Wastes by Chengfu Chu, Meihuang Zhan, Qi Feng, Dong Li, Long Xu, Fusheng Zha, Yongfeng Deng

“…Nevertheless, the performance deterioration after modification occurs when weathering for a long term. Therefore, in this study, the effect of drying-wetting cycles on swelling behaviour and compressibility of modified expansive soils with the iron tailing sand and calcium carbide slag has been investigated. …”
Get full text

Recognition of Red-Bed Landslides over Eastern Sichuan through Remote Sensing and Field Investigations by Zhao Miao, Panpan Tang, Yong Zhang

“…Red-bed soft rock, characterized by the gentle slope, low intensity, and weak weathering resistance, is widely distributed over the Eastern Sichuan Province, China, threatening many lives of people, economy development, and urbanization progress. …”
Get full text

Development Of Coastal Sediment Database by Nur Azlin Atikah Mohd Nasir, Nursuhaila Muhamad Fauzi, Aimie Rifhan Hashim, Sharir Aizat Kamaruddin

“…Sediment is a naturally occurring material that is broken down by weathering and erosion and then moved by the action of wind, water, or ice, or by gravity acting on the particles. …”
Get full text

Advances in Materials Science and Engineering Assessment of Gamma Radiation Hazards Related to Geologic Materials: Comparison of Results by Field Gamma Spectrometry and Laboratory... by Miguel Couto, Jorge Sanjurjo-Sánchez, Carlos Alves

“…The studied objects are rocks and their “in situ” weathering products. The results obtained indicate that despite several problems posed by field measurements with portable gamma spectrometry, namely, in terms of the geometric characteristics of the objects measured, this technique has the potential to identify materials with different hazard levels related to external gamma radiation.…”
Get full text

Characterization and Differentiation of Chemical Heterogeneity in Humic Substances by Continuous Intrinsic Proton Affinity Distribution by Zhang Hongxia, Dong Wenming, Huang Meide, Tao Zuyi

“…The chemical heterogeneity of proton binding on humic substances was studied via continuous intrinsic proton affinity distributions calculated using the condensation approximation from the master curves for two soil fulvic acids (FAs), one soil humic acid (HA) and one fulvic acid obtained from weathered coal. The master curves, i.e. plots of θ T,H (the overall protonation degree) versus Hs (the proton concentration in the diffuse double layer), were obtained from potentiometric titration curves at three ionic strengths. …”
Get full text

Engineered Multifunctional Fluorinated Film Based on Semicontinuous Emulsion Polymerization Using Polymerizable Quaternary Ammonium Emulsifiers by Hongzhu Liu, Lingnan Wang, Minhuan Wang, Chuan-Jin Hou, Bin-bin Ye, Zefeng Wang, Jiming Bian

“…In addition, wonderful weatherability, water resistance, and antibacterial and antifouling of the multifunctional fluorinated films were observed, which would open up a bright future for coating industries.…”
Get full text

GIS based ground water assessment of Nilakkottai Taluk, Tamil Nadu, India: hydrogeochemistry and statistical perspective by Umamageswari T.S.R

“…The durov plot demonstrated the dominance of Ca-HCO3 type groundwater, indicating a weathering process through fresh water recharge. This study insisted that majority of the samples satisfactory for crop yield and need to be protected from further contamination. …”
Get full text

Solar Photolysis and Photocatalytic Decolorization of Thymol Blue by Falah H. Hussein, Ahmed N. Alkhateeb, Jameel K. Ismail

“…The photolysis and photocatalytic decolorization of an aqueous propane-2-ol solution of thymol blue(TB) (Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(5-methyl-2-(1-methylethyl)-,S,S-dioxide; Thymolsulfonpthalein) (C27H30O5S),were carried out under natural weathering conditions. Direct photolysis of TB solution of concentration 4.3X10−3 M degraded 37.1% of the colored solution after two hours of solar irradiation, however, the solar photocatalytic decolorization percentage reached 79.04% and 86.21% after the addition of zinc oxide and titanium dioxide, respectively, for the same period. …”
Get full text

Study on Water Repellency Modification of Strongly Expansive Soil by DING Junhao, CHAI Linchun, ZHANG Jianjun

“…To study the inhibition effect of water-repellent sand on the expansion rate of expansive soil,this study takes the strongly expansive soil of weathered slopes as an example and adds octadecylamine into sand as water repellent agents to improve the expansive soil.The expansion rate tests are carried out on the ring-knife samples with 27 times of compaction,and the expansion and contraction characteristics of modified expansive soil under the optimal water content are revealed.The results indicate that the natural soil changes from hydrophilic to water-repellent upon the addition of water-repellent sand into expansive soil,and the water repellency is significantly enhanced.The optimal water content of the five modified expansive soils decreases with the increase in water repellency,and the expansion rate is reduced from 35% to 9%,which means the expansion characteristics are greatly inhibited.It is feasible to restrain the expansion and seepage of strongly expansive soil by adding water-repellent sand (octadecylamine content of 0.04%).…”
Get full text

Outcrops of Columnar Andesite Shaped by Periglacial Processes – Jersak Hills, King George Island, Antarctica by Migoń Piotr, Strzelecki Mateusz C.

“…Numerous joints in the rock mass facilitate efficient mechanical weathering, which has produced in situ regolith on summits, sorted scree slopes and less regular talus slopes. …”
Get full text

Options for Incorporating Energy Efficiency into Extension Programs: A Menu of Possibilities for Extension Energy Programming in Your Community by Lee Hayes Byron, Alane Humrich, Marianne Schmink, Jennison Kipp, Kimberly Davis, Paul Monaghan

Get full text

Application of FDA Discriminant Analysis Methodin Classification of Tunnel Surrounding Rocks by CHEN Liang, HAN Aiguo, CHEN Qiang, REN Guangming

“…Aiming at the classification of tunnel surrounding rock, and taking the surrounding rock of a water conveyance tunnel in southwest China as the research object, this paper comprehensively selects 8 indicators such as uniaxial saturated compressive strength of rock, volume joint count, rock mass integrity coefficient, main structural surface occurrence, rock quality, strength-stress ratio, crack weathering.and joint set in hydropower surrounding rock classification and Q system classification as the discriminant factors to establish the corresponding Fisher discriminant model, tests the modeling data one by one by the back-substitution estimation method, with the consistency rate of 89.5%, and applies the discriminant model to the remaining sections of the tunnel to obtain the prediction results, which are consistent with the actual situation. …”
Get full text

Rivers help us to quantify the socio-ecological functioning of their basin at the Anthropocene: the Seine example (1850–2020) by Meybeck, Michel, Bouleau, Gabrielle, Carré, Catherine, Garnier, Josette, Lestel, Laurence

“…River basins were identified very early on as a key component of chemical fluxes from continents to oceans, driven by weathering and biogeochemical cycles in their basin. …”
Get full text

Two-stage oxidation of petrogenic organic carbon in a rapidly exhuming small mountainous catchment by Wan-Yin Lien, Chih-Tung Chen, Yun-Hsuan Lee, Chih-Chieh Su, Pei-Ling Wang, Li-Hung Lin

“…Abstract Globally, the oxidative flux of petrogenic organic carbon rivals the drawdown by silicate weathering and burial of biospheric carbon. Where and how petrogenic organic carbon is susceptible to degradation along the short-path river-marine continuum in active orogens remains elusive. …”
Get full text

Research on Fracture and Energy Evolution of Rock Containing Natural Fractures under Cyclic Loading Condition by Xueliang Li, Yu Wang, Shuo Xu, Haonan Yang, Bo Li

“…For rock engineering in cold regions, the naturally fractured rock is susceptible to repeated freeze-thaw (F-T) weathering, coupled fatigue conditions of freeze-thaw (F-T), and stress disturbance act on rock mass, which can lead to the instability of rock engineering and even occurrence of geological hazards. …”
Get full text

The Effect of Aging on the Cracking Resistance of Recycled Asphalt by Mojtaba Mohammadafzali, Hesham Ali, James A. Musselman, Gregory A. Sholar, Aidin Massahi

“…An accelerated pavement weathering system was used to age the asphalt mixtures and their cracking resistance was evaluated by the Texas Overlay Test. …”
Get full text