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Integrated hazard assessment of rockfall incidents in the Cap Aokas Cliff Region

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Journal of Mountain Science 2024年第6期21卷 1916-1929页

作者： Zohra LADJEL farid ZAHRI Riheb HADJI Younes HAMED Karim ZIGHMI Kaddour BENMARCE Department of Earth Sciences Institute of Architecture and Earth SciencesFerhat Abbas UniversitySetif 19137Algeria Unit of Emerging Materials Research Ferhat Abbes UniversitySétif 19137Algeria Laboratory of Applied Research in Engineering Geology GeotechnicsWater Sciencesand EnvironmentFerhat Abbas UniversitySetif 19137Algeria International Association of Water Resources in the Southern Mediterranean Basin Gafsa 2112Tunisia Department of Earth Sciences Faculty of SciencesUniversity of GafsaGafsa 2112Tunisia

Rock fall accidents in mountainous cliff areas have significant consequences for human life and *** study aimed to evaluate the rockfall hazard in the Cap Aokas cliff region located along the northeast coast of Algeria by identifying the key factors contributing to rockfall *** employed a combination of kinematic analysis,Matterocking method,and 3D trajectory simulations to determine zones that are susceptible to rockfall *** using a probabilistic and structural approach in conjunction with photogrammetry,we identified the controlling *** kinematic analysis revealed the presence of five discontinuity families,which indicated both plane and wedge failure *** 3D trajectory simulations demonstrated that the falling blocks followed the stream *** then validated the susceptibility maps generated from the analysis using aerial photos and historical rockfall *** findings of this study enhance our understanding of rockfall phenomena and provide valuable insights for the development of effective strategies to mitigate rockfall hazards.

关键词： Trajectory simulations Probabilistic analysis Structural approach Rockfall hazard Cap Aokas cliff

Applications of variogram modeling to electrical resistivity data for the occurrence and distribution of saline groundwater in Domail Plain,northwestern Himalayan fold and thrust belt,Pakistan

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Journal of Mountain Science 2017年第1期14卷 158-174页

作者： Asam farid Perviez KHALID Khan Zaib JADOON Muhammad Asim IQBAL Muhammad SHAFIQUE Institute of Geology University of Punjab P. O. Box 54590 Lahore Pakistan Department of Civil Engineering Comsats Institute of lnformation Technology Abbottabad 22010 Pakistan Department of Petroleum Geosciences The Petroleum Institute P. O. Box 2533 Abu Dhabi United Arab Emirates National Centre of Excellence in Geology University of Peshawar Pakistan

This paper studies electrical resistivity dataset acquired for a groundwater study in the Domail Plain in the northwestern Himalayan section of Pakistan. Through a combination of geostatistical analysis,geophysical inversion and visualization techniques,it is possible to re-model and visualize the single dimension resistivity data into 2D and 3D *** variogram models are utilized to extend the interpretation of the data and to distinguish individual lithologic units and the occurrence of saline water within the subsurface. The resistivity data has been calibrated with the lithological logs taken from the available boreholes. As such the alluvial system of the Domail Plain has formed during episodes of local tectonic activity with fluvial erosion and depositionyielding coarse sediments with high electrical resistivities near to the mountain ranges and finer sediments with medium to low electrical resistivities which tend to settle in the basin center. Thus a change is depositional setting happened from basin lacustrine environment to flash flooding during the Himalayan orogeny. The occurrence of rock salt in the northern mountains has imparted a great influence on the groundwater quality of the study area. The salt is dissolved by water which infiltrates into the subsurface through the water channels. Variogram aided gridding of resistivity data helps to identify the occurrence and distribution of saline water in the subsurface.

关键词： Inversion Domail Resistivity Variogram Gridding

An Interpretable Artificial Intelligence Based Smart Agriculture System

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Computers, Materials & Continua 2022年第8期72卷 3777-3797页

作者： Fariza Sabrina Shaleeza Sohail Farnaz farid Sayka Jahan Farhad Ahamed Steven Gordon School of Engineering and Technology Central Queensland UniversitySydneyAustralia College of Engineering Science and EnvironmentThe University of NewcastleSydneyAustralia School of Social Sciences Western Sydney UniversitySydneyAustralia Department of Environmental Sciences Macquarie UniversitySydneyAustralia School of Computing Data and MathematicalSciencesWestern Sydney UniversitySydneyAustralia School of Engineering and Technology Central Queensland UniversityCairnsAustralia

With increasing world population the demand of food production has increased *** of Things(IoT)based smart agriculture system can play a vital role in optimising crop yield by managing crop requirements in *** can be an important factor to make such systems trusted and easily adopted by *** this paper,we propose a novel artificial intelligence-based agriculture system that uses IoT data to monitor the environment and alerts farmers to take the required actions for maintaining ideal conditions for crop *** strength of the proposed system is in its interpretability which makes it easy for farmers to understand,trust and use *** use of fuzzy logic makes the system customisable in terms of types/number of sensors,type of crop,and adaptable for any soil types and weather *** proposed system can identify anomalous data due to security breaches or hardware malfunction using machine learning *** ensure the viability of the system we have conducted thorough research related to agricultural factors such as soil type,soil moisture,soil temperature,plant life cycle,irrigation requirement and water application timing for Maize as our target *** experimental results show that our proposed system is interpretable,can detect anomalous data,and triggers actions accurately based on crop requirements.

关键词： Explainable artificial intelligence fuzzy logic internet of things machine learning sensors smart agriculture

Effect of acupotomy versus electroacupuncture on ethology and morphology in a rabbit model of knee osteoarthritis

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Journal of Traditional Chinese Medicine 2019年第2期39卷 229-236页

作者： Zhang Wei Gao Yang Guo Changqing Ibrahim Zeyad Ali Khattab farid Mokhtari School of Acupuncture-Moxibustion and Tuina Beijing University of Chinese Medicine

OBJECTIVE: To evaluate the treatment effect of acupotomy(Apo) in a rabbit model of knee osteoarthritis(KOA), compare the results of Apo versus electroacupuncture(E-Apu) on ethology, morphology, and structure of the articular cartilage surface in a rabbit model of KOA, and analyze the differences in the treatment effects of Apo versus ***: Twenty-eight male New Zealand white rabbits were randomized into four groups: normal control, blank model, Apo, and E-Apu(n = 7 in each group). Except for the normal control group, the left hindlegs of all rabbits were fixed in an extended position for 5 weeks to establish the KOA *** passive range of motion(PROM) and Lequesne index were measured before and after the establishment of the KOA model to assess the ethology in all groups. Safranin O-fast green staining and the Mankin score were used to assess the morphological cartilaginous changes to compare the effect of Apo versus E-Apu on the degeneration of articular cartilage, and to identify which therapy was superior in treating ***: Compared with before the establishment of the KOA model, the Lequesne index of the KOA model rabbits was significantly increased(P 0.05).Furthermore, compared with the E-Apu group, the Apo group had a significantly lower Lequesne index(P < 0.05), and a signifi

关键词： Osteoarthritis,knee Acupuncture therapy Ethology Morphological and microscopic findings Electroacupuncture

How long does the recovery of corneal sensitivity in different corneal regions take after LASEK?

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International Journal of Ophthalmology(English edition) 2023年第12期16卷 2056-2062页

作者： Ali Mirzajani Aria Bouyeh Fatemeh Khezri Ebrahim Jafarzadehpur farid Karimian Rehabilitation Research Center Department of OptometrySchool of Rehabilitation SciencesIran University of Medical SciencesTehran ***Iran Ophthalmic Research Center Research Institute for Ophthalmology and Vision ScienceShahid Beheshti University of Medical SciencesTehran ***Iran

AIM:To determine the corneal sensitivity recovery period after laser-assisted sub-epithelial keratectomy(LASEK)refractive surgery and investigate the effects of ablation depth on ***:In this study examinations were performed on 90 right eyes of 90 people(34 males and 56 females)with an age range of 20-35 and an average of 22.26±3.8 years old.A sensation of 5 corneal regions,including the center and 4 mid-peripheral regions,i.e.,nasal,inferior,temporal,and superior,each at a distance of 2 mm from the center of the cornea were measured with a Cochet-Bonnet esthesiometer device in 3-time points including before LASEK,1 and 3mo after the surgery,*** was performed on individuals with stabilized myopia of -1.00 to -7.00 diopters and astigmatism of less than 2.00 ***,the individuals were divided into three groups regarding ablation ***:The highest level of corneal sensitivity before surgery was related to the center of the cornea(59.1±7.76),and the highest level of corneal sensitivity loss was also related to this *** sensation of all measured corneal regions significantly reduced 1mo postoperatively and returned to their preoperative levels 3mo after surgery(mean of 5 corneal regions in levels of preoperation:58.2±6.48,1mo postoperation:57.3±5.84,3mo postoperation:58.2±5.49;P<0.05).A significant relationship was found between ablation depth and corneal sensitivity changes in the center and temporal regions(P<0.05).CONCLUSION:Corneal sensitivity in myopia and low astigmatism decreases after LASEK and reaches the preoperative level within *** depth of ablation during surgery affected the recovery of corneal sensitivity.

关键词： refractive surgery laser-assisted subepithelial keratectomy corneal sensitivity ablation depth refractive error

Predicting grain size-dependent superplastic properties in friction stir processed ZK30 magnesium alloy with machine learning methods

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Journal of Magnesium and Alloys 2024年第5期12卷 1931-1943页

作者： farid Bahari-Sambran Fernando Carreno C.M.Cepeda-Jiménez Alberto Orozco-Caballero Physical Metallurgy Department CENIM-CSICAv.Gregorio del Amo 828040 MadridSpain Department of Mechanical Engineering Chemistry and Industrial DesignPolytechnic University of MadridRonda de Valencia 328012MadridSpain

The aim of this work is to predict,for the first time,the high temperature flow stress dependency with the grain size and the underlaid deformation mechanism using two machine learning models,random forest(RF)and artificial neural network(ANN).With that purpose,a ZK30 magnesium alloy was friction stir processed(FSP)using three different severe conditions to obtain fine grain microstructures(with average grain sizes between 2 and 3μm)prone to extensive superplastic *** three friction stir processed samples clearly deformed by grain boundary sliding(GBS)deformation mechanism at high *** maximum elongations to failure,well over 400% at high strain rate of 10^(-2)s^(-1),were reached at 400℃ in the material with coarsest grain size of 2.8μm,and at 300℃ for the finest grain size of 2μ***,the superplastic response decreased at 350℃ and 400℃ due to thermal instabilities and grain coarsening,which makes it difficult to assess the operative deformation mechanism at such *** work highlights that the machine learning models considered,especially the ANN model with higher accuracy in predicting flow stress values,allow determining adequately the superplastic creep behavior including other possible grain size scenarios.

关键词： Machine learning Artificial intelligence Magnesium alloys Superplasticity Friction stir processing Grain coarsening

Assaying the allelopathic effects of Eucalyptus camaldulensis in a nursery bed incorporated with leaf litter

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Journal of Forestry Research 2018年第3期29卷 592-598页

作者： Romel Ahmed Mohammad Shafioul Alam farid Uddin Ahmed M.K.Hossain Department of Forestry and Environmental Science Shahjalal University of Science and TechnologySylhet 3114Bangladesh Ministry of Public Administration TeknafCoxsbazarDhaka 4761Bangladesh Arannayk Foundation House 21 Western RoadDOHSBananiDhaka 1206Bangladesh Institute of Forestry and Environmental Science University of ChittagongChittagong 4331Bangladesh

Allelopathic effects of Eucalyptus camaldulensis Dehnh. were confirmed in Petri dish and pot experiments in our previous studies. However, the degree to which such effects under controlled experiments exist in more complex ecological settings remains to be tested. Thus, the present study was carried out by incorporating different proportions of ground litter of E. camaldulensis in soil. The growth of three agricultural crops: falen(Vigna unguiculata(L.) Walp.), chickpea(Cicer arietinum L.), and arhor(Cajanus cajan(L.) Millsp.), and two tree species, kala koroi(Albizia procera(Roxb.) Benth.) and ipil ipil(Leucaena leucocephala(Lam.) de Wit) were tested. There were inhibitory effects of leaf litter on germination, shoot and root growth, leaf number, and collar diameter as well as a reduction of nodulation by legume crops(25–80%reduction). The extent of the effects was dependent on the proportion of leaf litter, the species and the type of traits. In contrast to shoot growth, the effect on root growth was more severe. No effect on germination was found with the agriculture crops while the two tree species showed reduced germination. The effect was greater in the presence of higher proportions of leaf litter mixed in soil while in some cases lower proportions stimulated growth. Not all species were suppressed; A. procera, C. cajan, V. unguiculata showed compatible growth while C. arietinum and *** were found incompatible. This study provides evidence that E. camaldulensis has allelopathic potential under field conditions and a careful selection of associated crops in agroforestry systems is highly recommended.

关键词： Allelopathy Eucalyptus camaldulensis Inhibitory effects Germination Growth Nodulation

FPGA-based hardware-in-the-loop for multi-domain simulation

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International Journal of Modeling, Simulation, and Scientific Computing 2019年第4期10卷 20-37页

作者： Abdelouahab D.Benhamadouche farid Djahli Adel Ballouti Abdeslem Sahli Department of Electronic University Ferhat Abbas Setif 1 Setif 19000Algeria Faculty of Technology University Mohamed Boudiaf of M’Sila M’Sila 28000Algeria

In this paper,we present a new approach for complex system design,which allows rapid,efficient and low-cost *** approach can simplify designing tasks and go faster from system modeling to effective hardware *** multi-domain systems requires different engineering competences and several tools,our approach gives a unique design environment,based on the use of VHDL-AMS modeling language and FPGA device within the same design *** approach is intended to enhance hardware-in-the-loop(HIL)practices with a more realistic simulation which improve the verification process in the system design *** paper describes the implementation of a software/hardware platform as a practical support for our approach,the feasibility and the benefits of this approach are demonstrated through a practical case study for power converter *** obtained results show that the developed method achieves significant speed-up compared with conventional simulation,with a minimum used resources and minimum latency.

关键词： Hardware-in-the-loop(HIL)simulation multi-domain system verification system control field-programmable gate array(FPGA) VHDL-AMS

Bone marrow-derived mesenchymal stem cells ameliorate sodium nitrite-induced hypoxic brain injury in a rat model

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Neural Regeneration Research 2017年第12期12卷 1990-1999页

作者： Elham H.A.Ali Omar A.Ahmed-farid Amany A.E.Osman Faculty of Women for Art Sciences and Education Ain Shams University Cairo Egypt National Organization for Drug Control and Research (NODCAR) Giza Egypt

Sodium nitrite（Na NO2） is an inorganic salt used broadly in chemical industry. Na NO2 is highly reactive with hemoglobin causing hypoxia. Mesenchymal stem cells（MSCs） are capable of differentiating into a variety of tissue specific cells and MSC therapy is a potential method for improving brain functions. This work aims to investigate the possible therapeutic role of bone marrow-derived MSCs against Na NO2 induced hypoxic brain injury. Rats were divided into control group（treated for 3 or 6 weeks）, hypoxic（HP） group（subcutaneous injection of 35 mg/kg Na NO2 for 3 weeks to induce hypoxic brain injury）, HP recovery groups N-2 w R and N-3 w R（treated with the same dose of Na NO2 for 2 and 3 weeks respectively, followed by 4-week or 3-week self-recovery respectively）, and MSCs treated groups N-2 w SC and N-3 w SC（treated with the same dose of Na NO2 for 2 and 3 weeks respectively, followed by one injection of 2 × 106 MSCs via the tail vein in combination with 4 week self-recovery or intravenous injection of Na NO2 for 1 week in combination with 3 week self-recovery）. The levels of neurotransmitters（norepinephrine, dopamine, serotonin）, energy substances（adenosine monophosphate, adenosine diphosphate, adenosine triphosphate）, and oxidative stress markers（malondialdehyde, nitric oxide, 8-hydroxy-2′-deoxyguanosine, glutathione reduced form, and oxidized glutathione） in the frontal cortex and midbrain were measured using high performance liquid chromatography. At the same time, hematoxylin-eosin staining was performed to observe the pathological change of the injured brain tissue. Compared with HP group, pathological change of brain tissue was milder, the levels of malondialdehyde, nitric oxide, oxidized glutathione, 8-hydroxy-2′-deoxyguanosine, norepinephrine, serotonin, glutathione reduced form, and adenosine triphosphate in the frontal cortex and midbrain were significantly decreased, and glutathione reduced form/oxidized glutathione and adenosine monophosphate/adenosine

关键词： nerve regeneration hypoxia bone marrow-derived mesenchymal stem cells sodium nitrite monoamine neurotransmitter cell energy neural regeneration