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2023

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Risk Factors And Management Of Prosthetic Joint Infections In Megaprostheses-A Review Of The Literature, Juan Pretell Dec 2023

Risk Factors And Management Of Prosthetic Joint Infections In Megaprostheses-A Review Of The Literature, Juan Pretell

All Publications

No abstract provided.


Cambridge Leasing Prop. Llc V. Cachimbo Dec 2023

Cambridge Leasing Prop. Llc V. Cachimbo

All Decisions

No abstract provided.


Vocal Fold Paresis And Bilateral Anterior Laryngeal Saccular Cysts In A Singer., Ryan Witcher, Lauren E Melley, Omar Ramadan, Robert T Sataloff Dec 2023

Vocal Fold Paresis And Bilateral Anterior Laryngeal Saccular Cysts In A Singer., Ryan Witcher, Lauren E Melley, Omar Ramadan, Robert T Sataloff

Otolaryngology (ENT) Resident Research

No abstract available


Lidocaine Induces Apoptosis In Head And Neck Squamous Cell Carcinoma Through Activation Of Bitter Taste Receptor T2r14, Zoey A Miller, Arielle Mueller, Taebeom Kim, Jennifer F Jolivert, Ray Z Ma, Sahil Muthuswami, April Park, Derek B Mcmahon, Kevin T Nead, Ryan M Carey, Robert J Lee Dec 2023

Lidocaine Induces Apoptosis In Head And Neck Squamous Cell Carcinoma Through Activation Of Bitter Taste Receptor T2r14, Zoey A Miller, Arielle Mueller, Taebeom Kim, Jennifer F Jolivert, Ray Z Ma, Sahil Muthuswami, April Park, Derek B Mcmahon, Kevin T Nead, Ryan M Carey, Robert J Lee

Faculty, Staff and Student Publications

Head and neck squamous cell carcinomas (HNSCCs) have high mortality and significant treatment-related morbidity. It is vital to discover effective, minimally invasive therapies that improve survival and quality of life. Bitter taste receptors (T2Rs) are expressed in HNSCCs, and T2R activation can induce apoptosis. Lidocaine is a local anesthetic that also activates bitter taste receptor 14 (T2R14). Lidocaine has some anti-cancer effects, but the mechanisms are unclear. Here, we find that lidocaine causes intracellular Ca


Microcalcification Crystallography As A Potential Marker Of Dcis Recurrence, Zoey A Miller, Arielle Mueller, Taebeom Kim, Jennifer F Jolivert, Ray Z Ma, Sahil Muthuswami, April Park, Derek B Mcmahon, Kevin T Nead, Ryan M Carey, Robert J Lee Dec 2023

Microcalcification Crystallography As A Potential Marker Of Dcis Recurrence, Zoey A Miller, Arielle Mueller, Taebeom Kim, Jennifer F Jolivert, Ray Z Ma, Sahil Muthuswami, April Park, Derek B Mcmahon, Kevin T Nead, Ryan M Carey, Robert J Lee

Faculty, Staff and Student Publications

Head and neck squamous cell carcinomas (HNSCCs) have high mortality and significant treatment-related morbidity. It is vital to discover effective, minimally invasive therapies that improve survival and quality of life. Bitter taste receptors (T2Rs) are expressed in HNSCCs, and T2R activation can induce apoptosis. Lidocaine is a local anesthetic that also activates bitter taste receptor 14 (T2R14). Lidocaine has some anti-cancer effects, but the mechanisms are unclear. Here, we find that lidocaine causes intracellular Ca


"What Is A Wave But 1000 Drops Working Together?": The Role Of Public Libraries In Addressing Lgbtqia+ Health Information Disparities, Vanessa Lynn Kitzie, A. Nick Vera, Valerie Lookingbill, Travis L. Wagner Dec 2023

"What Is A Wave But 1000 Drops Working Together?": The Role Of Public Libraries In Addressing Lgbtqia+ Health Information Disparities, Vanessa Lynn Kitzie, A. Nick Vera, Valerie Lookingbill, Travis L. Wagner

Faculty Publications

Purpose. This paper presents results from a participatory action research study with 46 LGBTQIA+ community leaders and 60 library workers who participated in four community forums at public libraries across the US. The forums identified barriers to LGBTQIA+ communities addressing their health questions and concerns and explored strategies for public libraries to tackle them.

Design/methodology/approach. Forums followed the World Café format to facilitate collaborative knowledge development and promote participant-led change. Data sources included collaborative notes taken by participants and observational researcher notes. Data analysis consisted of emic/etic qualitative coding.

Findings. Results revealed that barriers experienced by LGBTQIA+ communities are structurally …


Optimizing Conservation Of Nili Ravi Buffaloes In Southern Region Of Khyber Pakhtunkhwa: A Comprehensive Evaluation Of Phenotypic, Morphometric, And Productive Traits, Arsalan Khan, Israr Ud Din, Hafiz Abdul Majid, Amjad Ali, Akhtar Ali, Muhammad Rizwan, Waseem Ullah, Shah Zeb, Safi Ullah, Imran Khan, Abid Ullah Dec 2023

Optimizing Conservation Of Nili Ravi Buffaloes In Southern Region Of Khyber Pakhtunkhwa: A Comprehensive Evaluation Of Phenotypic, Morphometric, And Productive Traits, Arsalan Khan, Israr Ud Din, Hafiz Abdul Majid, Amjad Ali, Akhtar Ali, Muhammad Rizwan, Waseem Ullah, Shah Zeb, Safi Ullah, Imran Khan, Abid Ullah

Journal of Bioresource Management

In Pakistan, Nili Ravi buffalo is highly valued breed due to its high milk yield. Native to Punjab province, the breed is now extensively distributed throughout the country. To assess and optimize the conservation strategies for Nili Ravi buffaloes in southern Khyber Pakhtunkhwa by evaluating their phenotypic, morphometric, productive, and reproductive characteristics. Buffaloes were maintained at Livestock Research and Development Station in Paharpur, Dera Ismail Khan from 2010-2023, under breed conservation program. A sum of 298 records Nili Ravi buffaloes were used for the investigation. The research examined physical attributes such as coat color, horn morphology, and other qualitative characteristics. …


Feeding Overlap Investigations Between Hypophthalmichthys Molitrix And Cyprinus Carpio From Punjab, Pakistan, Afzala Munawar, Muhammad Imran, Muhammad Ameen, Abdul Majid Khan, Ayesha Sania, Muhammad Shahbaz Dec 2023

Feeding Overlap Investigations Between Hypophthalmichthys Molitrix And Cyprinus Carpio From Punjab, Pakistan, Afzala Munawar, Muhammad Imran, Muhammad Ameen, Abdul Majid Khan, Ayesha Sania, Muhammad Shahbaz

Journal of Bioresource Management

Freshwater ichthyofauna is facing intensive stress as a result of urbanization and growing industries in Pakistan. The alien fish species are considered one of the major challenges due to their deleterious effects. Feeding habit analysis is a basic tool to evaluate the ecological stress on fish species residing in different habitats. The present study was designed to disclose the feeding overlap between Cyprinus carpio (Common Carp) and Hypophthalmichthys molitrix (Silver Carp) from Head Marala (river Chenab) and Mangla Dam (river Jhelum). For this purpose, 20 samples i.e. 10 from each site of each fish species out of total 40, were …


Biology, Ecology, Infestation, And Management Of Warble Flies (Diptera: Oestridae), Muhammad Jamil, Abdul Razzaq, Noman Latif, Mariam Fatima, Muhammad Saqib, Matiullah Jaffar, Hafiz Zille Rehman, Faiqah Ramzan Dec 2023

Biology, Ecology, Infestation, And Management Of Warble Flies (Diptera: Oestridae), Muhammad Jamil, Abdul Razzaq, Noman Latif, Mariam Fatima, Muhammad Saqib, Matiullah Jaffar, Hafiz Zille Rehman, Faiqah Ramzan

Journal of Bioresource Management

The range grazing livestock (cattles and goats) are afflicted by a significant skin/hide issue known as warble fly larval infestation, which is caused by the larvae of Hypoderma lineatum and Hypoderma bovis species which resulted in substantial economic losses to the leather industries. The life cycle of hypodermosis is complex, involving both ecto- and endoparasitic stages. Female warble flies deposit their eggs in rows of 5-8 on individual hairs of the host, often targeting the legs but also other areas. These eggs are securely attached to the hairs and a single female fly may lay as many as 800 eggs …


Information-Rich 6d Single-Molecule Imaging Design Using Optimization, Tingting Wu Dec 2023

Information-Rich 6d Single-Molecule Imaging Design Using Optimization, Tingting Wu

McKelvey School of Engineering Graduate Student Theses & Dissertations

When studying biochemical processes, localizing the targets alone will not paint a complete picture. We also need techniques to probe how biomolecules interact with one another, including how molecules are organized into larger structures, how they are oriented with respect to surrounding molecules, and how local chemical parameters, like pH and hydrophobicity, vary spatially and temporally. My dissertation focuses on single-molecule orientation localization microscopy (SMOLM, Chapter 1). The objective is to develop imaging techniques for measuring how molecules are oriented with respect to their surrounding molecules, namely, 3D orientation. Achieving optimal imaging performance requires careful design of both the forward …


Managing Protected Areas: People And Places, Niall Finneran, Denise Hewlett, Richard Clarke, Richard Gunton, Debra Gray, Ainara Terradillos, Danny Byrne, Sheela Agarwal Dec 2023

Managing Protected Areas: People And Places, Niall Finneran, Denise Hewlett, Richard Clarke, Richard Gunton, Debra Gray, Ainara Terradillos, Danny Byrne, Sheela Agarwal

Plymouth Business School

This open access book brings together 16 specially commissioned chapters drawn from a range of different professional-practitioner and academic global perspectives on the importance of the relationship between people and green and blue spaces. It focuses on issues surrounding the importance of natural environments on public health and wellbeing, and the environmental, cultural, and social importance of green and blue spaces that can result through responsible and sustainable adaptive management processes. It explores how the Covid-19 pandemic forced reconsiderations of our relationship with these natural spaces and highlights the important impact of the pace of climate change. While not pretending …


Engineered Adoptive T-Cell Therapies For Breast Cancer: Current Progress, Challenges, And Potential, Diego F Chamorro, Lauren K Somes, Valentina Hoyos Dec 2023

Engineered Adoptive T-Cell Therapies For Breast Cancer: Current Progress, Challenges, And Potential, Diego F Chamorro, Lauren K Somes, Valentina Hoyos

Faculty, Staff and Students Publications

Breast cancer remains a significant health challenge, and novel treatment approaches are critically needed. This review presents an in-depth analysis of engineered adoptive T-cell therapies (E-ACTs), an innovative frontier in cancer immunotherapy, focusing on their application in breast cancer. We explore the evolving landscape of chimeric antigen receptor (CAR) and T-cell receptor (TCR) T-cell therapies, highlighting their potential and challenges in targeting breast cancer. The review addresses key obstacles such as target antigen selection, the complex breast cancer tumor microenvironment, and the persistence of engineered T-cells. We discuss the advances in overcoming these barriers, including strategies to enhance T-cell efficacy. …


Passive Physical Layer Distinct Native Attribute Cyber Security Monitor, Christopher M. Rondeau, Michael A. Temple, Juan L. Lopez Jr., J. Addison Betances Dec 2023

Passive Physical Layer Distinct Native Attribute Cyber Security Monitor, Christopher M. Rondeau, Michael A. Temple, Juan L. Lopez Jr., J. Addison Betances

AFIT Patents

A method for cyber security monitor includes monitoring a network interface that is input-only configured to surreptitiously and covertly receive bit-level, physical layer communication between networked control and sensor field devices. During a training mode, a baseline distinct native attribute (DNA) fingerprint is generated for each networked field device. During a protection mode, a current DNA fingerprint is generated for each networked field device. The current DNA fingerprint is compared to the baseline DNA fingerprint for each networked field device. In response to detect at least one of RAA and PAA based on a change in the current DNA fingerprint …


Bridging Bone Health: Osteoporosis Disparities In The Rio Grande Valley, Ryan P. Bialaszewski, John M. Gaddis, Blake Martin, Philippe J. Dentino, John Ronnau Dec 2023

Bridging Bone Health: Osteoporosis Disparities In The Rio Grande Valley, Ryan P. Bialaszewski, John M. Gaddis, Blake Martin, Philippe J. Dentino, John Ronnau

School of Medicine Publications

Introduction: Osteoporosis is characterized by decreased bone mass and decreased bone quality, leading to increased bone fragility and risk of fractures. The number of fractures due to osteoporosis is projected to increase to over three million by the year 2025 and cost $25.3 billion annually. It ranks highly among diseases that cause patients to become bedridden with serious complications and reduced quality of life. Additionally, osteoporosis disproportionately affects Hispanics, which comprise most of the Rio Grande Valley (RGV) population. Therefore, our primary objective was to determine the prevalence of osteoporosis within the RGV. Additionally, we had secondary objectives to determine …


System And Method For Secure Authentication Based On An Attribute Value, Anil Kumar Japa Dec 2023

System And Method For Secure Authentication Based On An Attribute Value, Anil Kumar Japa

Defensive Publications Series

The present disclosure relates to a method and system for secure authentication of user devices based on an attribute value. The present disclosure suggests updating a new temporary attribute value when a user performs actions like locking, or shutting down a user device. Thereafter, an authenticated application or resource is accessed using the decrypted value, wherein the decrypted value is used to obtain the current HostName lock status value. If the current HostName lock status value is not the same as the predefined value in a decrypted string, access to the authenticated application resources is allowed, otherwise access is restricted. …


Systems And Methods For Coupling Low-Bandwidth Imaging Devices To A Wearable Device Using A Reduced Number Of Data-Transmission Lanes, John Enders Robertson Dec 2023

Systems And Methods For Coupling Low-Bandwidth Imaging Devices To A Wearable Device Using A Reduced Number Of Data-Transmission Lanes, John Enders Robertson

Defensive Publications Series

Systems and methods are provided for recovering image data received from a low-bandwidth imaging device. One example system includes a low-bandwidth imaging device and one or more integrated circuits communicatively coupled with the low-bandwidth imaging device. The low-bandwidth imaging device is coupled to the one or more integrated circuits via at least one active data-transmission lane, and the one or integrated circuits also include another data-transmission lane. The one or more integrated circuits are configured to use the active data-transmission lane to receive first and second image data via the active data-transmission lane. The first and second image data start …


Improved Foldable Display Structures With Electrostatic Discharge Mitigation Structures, Alpha Hsiu, Jack Wang, Cj Lin Dec 2023

Improved Foldable Display Structures With Electrostatic Discharge Mitigation Structures, Alpha Hsiu, Jack Wang, Cj Lin

Defensive Publications Series

This publication describes improved foldable display structures with electrostatic discharge (ESD) mitigation structures that enable more robust foldable devices with improved longevity and increased electrical protection. In aspects, a foldable device includes a foldable display structure that includes at least a decorative trim layer, a pad‑print layer, an adhesive layer, a chip‑on‑plastic (COP) layer, and a display panel layer. The foldable display structure can be housed within a metal enclosure. The decorative trim layer may be configured as a border structure and is positioned to secure edges of the pad‑print layer within the metal enclosure. The pad-print layer includes at …


Table Of Contents, The Editors Dec 2023

Table Of Contents, The Editors

Coal Geology & Exploration

No abstract provided.


Critical Links And Development Trends Of Research On Active Tectonics, Yuan Daoyang, Wang Youlin, Li Shuwu, Wang Wanhe, Li Linyuan, Zou Xiaobo, Wen Yameng Dec 2023

Critical Links And Development Trends Of Research On Active Tectonics, Yuan Daoyang, Wang Youlin, Li Shuwu, Wang Wanhe, Li Linyuan, Zou Xiaobo, Wen Yameng

Coal Geology & Exploration

Following a brief introduction of the general characteristics of active tectonics in China, this study analyzed two new features of large earthquakes with Ms ≥ 7 that have struck continental China since the beginning of the 21st century: (1) Large earthquakes occur primarily in clusters along the boundary fault zone of the Bayanhar active tectonic block—part of the Qinghai-Tibet ateau active tectonic block. (2) Reverse fault-fold earthquakes have occurred multiple times within active basins or at basin-mountain boundaries. In response to the new seismic activity features and the new demand for disaster prevention and mitigation of engineering construction and …


Nutritional And Wellness Strategies For Neurological And Psychiatric Recovery From Postcovid Syndrome And Post-Acute Sequelae Of Covid-19, Jeffrey Schaefer, Deepesh Khanna Dec 2023

Nutritional And Wellness Strategies For Neurological And Psychiatric Recovery From Postcovid Syndrome And Post-Acute Sequelae Of Covid-19, Jeffrey Schaefer, Deepesh Khanna

HPD Articles

The post-COVID syndrome was officially recognized as a disability under the Americans with Disabilities Act, indicating that this syndrome has made a significant impact on our populace. Also, post-acute sequelae of COVID-19 (PASC) is a term that describes the long-term health problems that some people experience after being infected with the virus that causes COVID-19. These problems can last for weeks, months, or even years, and can affect various parts of the body, such as the heart, lungs, brain, and blood vessels. This narrative review paper utilized the PubMed database to explore the pathophysiology of post-COVID syndrome's neurological and psychiatric …


Masculine Ideals And Health In Older Men: Findings From The Wisconsin Longitudinal Study, Shane D. Burns, Patricia Drentea Dec 2023

Masculine Ideals And Health In Older Men: Findings From The Wisconsin Longitudinal Study, Shane D. Burns, Patricia Drentea

APC Fund

How do older men’s masculine ideals affect their health? Are masculine activities involved in this relationship? Masculine identity upholds beliefs about masculine enactment. These beliefs can be detrimental to men and can lead to behaviors that can put undue stress on them. We examine how masculine ideals are associated with health and depressive symptomatology in older men. We used 2011 data from the Wisconsin Longitudinal Study (n = 2,594) to investigate how masculine ideals inform older men’s health and how participation in masculine activities might shape these outcomes. Findings from this study illustrate that traditional masculine ideals are associated …


A Light Has Shined, Joseph Khabbaz Dec 2023

A Light Has Shined, Joseph Khabbaz

The Main Thing Devotional

Then the angel said to them, “Do not be afraid, for behold, I bring you good tidings of great joy which will be to all people. For there is born to you this day in the city of David a Savior, who is Christ the Lord. (Luke 2:10–11)

The people who walked in darkness Have seen a great light; Those who dwelt in the land of the shadow of death, Upon them a light has shined. (Isaiah 9:2)

Heaven is no further away as when angels appeared to shepherds in the field.


Activity Variations Of The Shanzuokou-Sihong Fault Within The Jiangsu Segment Of The Tancheng-Lujiang Fault Zone And Their Origins, Zhang Hao, Li Wei, Li Limei, Yan Yunxiang, Jiang Xin, Wang Jinyan, Zhao Qiguang, Gu Qinping, Xu Hangang Dec 2023

Activity Variations Of The Shanzuokou-Sihong Fault Within The Jiangsu Segment Of The Tancheng-Lujiang Fault Zone And Their Origins, Zhang Hao, Li Wei, Li Limei, Yan Yunxiang, Jiang Xin, Wang Jinyan, Zhao Qiguang, Gu Qinping, Xu Hangang

Coal Geology & Exploration

The Shanzuokou-Sihong fault, having undergone the entire evolutionary process of the Tancheng-Lujiang fault zone, exhibits segmentation during the latest activity epoch. Determining the location and origin of its activity segmentation will provide a significant reference for exploring the activity variations of its branch faults and their origins. This study investigated the activity of the Shanzuokou-Sihong fault using a three-dimensional approach combining field geological surveys, shallow seismic exploration, and cross-well stratigraphic correlation. The results show that the Shanzuokou-Sihong fault is a Late Pleistocene active fault on the east side of the North Maling Mountain and a Middle Pleistocene fault in Xinyi …


Revealing Fine-Scale Crustal Structure And Tectonic Features In The Xiong’An New Area And Its Periphery Using Deep Seismic Reflection Profiling, Yue Hangyu, Wang Kai, Wang Xiaojiang, Zhang Baowei, Zhang Kai Dec 2023

Revealing Fine-Scale Crustal Structure And Tectonic Features In The Xiong’An New Area And Its Periphery Using Deep Seismic Reflection Profiling, Yue Hangyu, Wang Kai, Wang Xiaojiang, Zhang Baowei, Zhang Kai

Coal Geology & Exploration

As an effective method to accurately reveal the deep geological structures and tectonic features of the Earth, deep seismic reflection profiling has been increasingly applied to the exploration of the continental and oceanic crusts, as well as the upper mantle of the lithosphere, making it internationally recognized pioneer technique for deep Earth exploration. This study examined the deep seismic reflection profile spanning across the Xiong’an New Area in Hebei Province, aiming to reveal the crustal structure and tectonic features of the study area. Key findings are as follows: (1) The crust in the study area can be divided into the …


Application Of Integrated Geophysical Surveys In The Identification Of Hidden Fire Sources In Spontaneous Combustion Zones In Coal Seams, Ma Zijun, Yang Haiyan, Li Wenyu, Xu Yunlei, He Yunlan, Liu Zhuoming, Li Peng, Huang Jiu Dec 2023

Application Of Integrated Geophysical Surveys In The Identification Of Hidden Fire Sources In Spontaneous Combustion Zones In Coal Seams, Ma Zijun, Yang Haiyan, Li Wenyu, Xu Yunlei, He Yunlan, Liu Zhuoming, Li Peng, Huang Jiu

Coal Geology & Exploration

Spontaneous combustion in coal seams, a factor influencing the development of many mining areas in China, can cause severe coal resource loss and environmental pollution. The positioning and distribution identification of hidden fire sources can provide an important basis for coal mine enterprises to prepare prevention and control measures. They are also a hot research topic and challenge in the field of coal fire disasters. Suitable channels for ventilation and oxygen supply are necessary for spontaneous combustion in coal seams. When the oxidative heat release rate of coals exceeds the heat dissipation rate, coal temperature will rise until the occurrence …


Integration Of Massive Open Online Course (Mooc) In Conventional Teaching And Learning For Fixed Prosthodontics - A Case Study, Nor Faharina Abdul Hamid, Rohana Ahmad, Tong Wah Lim, Nur Hafizah Kamar Affendi, Tengku Fazrina Tengku Mohd Ariff, Melati Mahmud, Siti Mariam Ab Ghani Dec 2023

Integration Of Massive Open Online Course (Mooc) In Conventional Teaching And Learning For Fixed Prosthodontics - A Case Study, Nor Faharina Abdul Hamid, Rohana Ahmad, Tong Wah Lim, Nur Hafizah Kamar Affendi, Tengku Fazrina Tengku Mohd Ariff, Melati Mahmud, Siti Mariam Ab Ghani

Journal of Dentistry Indonesia

The potential for Massive Open Online Courses (MOOCs) in clinical dentistry remains vague and inadequately explored. Objectives: The study aims to obtain insight into the development of MOOCs in Fixed Partial Dental Prostheses (FPDPs) and to assess students’ learning preferences, module quality, and interface usability. Methods: The MOOCs was created by seven academicians with prosthodontic backgrounds. After completing the MOOCs and three complementary online discussion sessions, the students (n = 89) were invited to participate in an online survey. SPSS version 23 was used to calculate the frequency, percentage, mean, and standard deviation of categorical data (SD). Results …


Clinically Effective Regenerative Therapy For Primary Endodontic Lesions With Secondary Periodontal Lesions: A Case Report, Martina Amalia, Budi Budi, Iceu Estu Kurmaena, Nevi Yanti, Hesty Nurcahyanti, Aini Hariyani Nasution Dec 2023

Clinically Effective Regenerative Therapy For Primary Endodontic Lesions With Secondary Periodontal Lesions: A Case Report, Martina Amalia, Budi Budi, Iceu Estu Kurmaena, Nevi Yanti, Hesty Nurcahyanti, Aini Hariyani Nasution

Journal of Dentistry Indonesia

The diagnosis and prognosis of teeth with endo-perio lesions present a major challenge for dentists. Proper diagnosis is critical in determining treatment and the long-term prognosis. However, treating complex endodontic and periodontal lesions is one of the most common challenges in current clinical practice. The coexistence of pulpal and periodontal tissue damage may complicate diagnosis and further influence dental prognosis. This article consists of a case report evaluating the efficacy of xenografts and resorbable membrane pericardium in treating bifurcation lesions associated with periodontal lesions of the left mandibular first molar. A 22-year-old female patient was referred by conservative dentistry with …


Chromium-Contaminated Sites: Migration Characteristics And Monitoring Using Dual-Frequency Ip Method, Wei Kaiyao, Liu Zhimin, Liang Chen, Zhang Jie, Ma Qiang Dec 2023

Chromium-Contaminated Sites: Migration Characteristics And Monitoring Using Dual-Frequency Ip Method, Wei Kaiyao, Liu Zhimin, Liang Chen, Zhang Jie, Ma Qiang

Coal Geology & Exploration

Given that the migration process of chromium-contaminated sites is subjected to various uncertainties, it is difficult to investigate the migration characteristics and explore the monitoring process using experiments. Based on the basic law of groundwater flow and the migration mechanisms of pollutants, this study conducted a simulation analysis of the migration characteristics of static chromium contamination sources and the law of changes in the migration characteristics using the COMSOL software. Then, this study verified the reliability and accuracy of numerical forward simulations through physical simulation experiments on a static soil bin. Specifically, using the model of chromium contamination source migration …


Dual-Frequency Transmission Radio Wave-Based Exploration Method And Its Application, Fu Xianjie, Hu Ze'an, Wu Rongxin, Li Peng Dec 2023

Dual-Frequency Transmission Radio Wave-Based Exploration Method And Its Application, Fu Xianjie, Hu Ze'an, Wu Rongxin, Li Peng

Coal Geology & Exploration

Coal seams can act as the guided wave layers of high-frequency electromagnetic waves, and radio wave perspective technology can be used to detect geological structures within coal seams of a working face. Presently, radio wave perspective methods usually use a single frequency, leading to some problems such as improper frequency selection and limited detection accuracy in the exploration of mining faces. In response, this study developed a dual-frequency transmission radio wave-based exploration method. Based on theoretical analysis, as well as the field strength of dual-frequency perspective and attenuation coefficient, this study derived the calculation formula for the absorption factor γ …


The Application Of The Opposing Coils Transient Electromagnetic Method And Microtremor Survey Method In Shallow Karst Detection, Zhang Xueliang, Xie Tao, Zhou Wei, Gao Hui, Deng Dong, Qu Jingyi Dec 2023

The Application Of The Opposing Coils Transient Electromagnetic Method And Microtremor Survey Method In Shallow Karst Detection, Zhang Xueliang, Xie Tao, Zhou Wei, Gao Hui, Deng Dong, Qu Jingyi

Coal Geology & Exploration

Concealed karsts frequently lead to disasters such as ground collapse, water reservoir seepage, and tunnel water inrush. Identifying the distribution and development of karsts in advance holds great significance for guiding engineering design and construction in karst areas. Geophysical methods rank among the most effective methods for karst detection. Given the problems of karst development, limited space, and serious electromagnetic interference in the tank farms of the Longkou Port, Shandong Province, this study explored shallow karsts in these farms through the joint application of the opposing coils transient electromagnetic (OCTEM) method and the microtremor survey method. Firstly, surface scanning was …