Suchergebnisse

Abstract Geomembranes are used worldwide as basin liners in tailings ponds to decrease the permeability of the foundation and prevent further transportation of harmful contaminants and contaminated water. However, leakage into the environment and damage to the geomembrane have been reported. This paper reviews available literature and recommendations on geomembrane structures for use as a basal liner in tailings ponds, and presents a framework to achieve early involvement and an integrated approach to geomembrane structure design. Cohesive planning guidelines or legislative directions for such structures are currently lacking in many countries, which often means that the structure guidelines for groundwater protection or landfill are applied when designing tailings storage facilities (TSF). Basin structure is generally unique to each mine but, based on the literature, in the majority of cases the structure has a single-composite liner. The type of liner system used depends mainly on the material to be used on top of the structure, local hydraulic pressure gradient, and climate conditions. More practical information and scientific knowledge on the use of base liners in various cases are needed. A sustainable approach could be risk-based design, where the life cycle of the basin is taken into consideration. To this end, this paper proposes geomembrane-lined tailings pond to be assessed as a stakeholder. Emphasis on this, early enough, can ensure critical factors for tailings ponds to be considered from the outset in the design of mines and reduces the environmental footprint of the mining industry. More holistic project management and early involvement and integration are recommended to improve construction quality during the entire life cycle of the pond. In the long term, use of dry stacking or other alternative methods should be encouraged, despite the higher costs for operators.

Lorena Tax Increment Reinvestment Zone (TIRZ) #1 East has proposed the Basin G Sanitary Sewer Line project where approximately 7,400-linear-feet of wastewater line will be constructed in northeast Lorena, McLennan County, Texas. The project engineer, Kasberg Patrick and Associates LP, retained Terracon Consultants, Inc. to conduct a systematic, intensive pedestrian survey of the approximate 17-acre project area. Because Lorena TIRZ #1 East, a public private partnership with the City of Lorena, a political subdivision of the State of Texas, sponsored the project, the proposed undertaking is subject to compliance with the Antiquities Code of Texas and oversight from the Texas Historical Commission. In addition, the survey meets the standards for compliance under Section 106 of the National Historic Preservation Act of 1966, as amended, should a US Army Corps of Engineers permit be necessary or federal funding be utilized for the project. The cultural resources survey was carried out in advance of ground disturbance under Texas Antiquities Permit Number 8318, issued to Caitlin Gulihur, MA, Principal Investigator. Fieldwork was carried out by Caitlin Gulihur with assistance from Archeological Technician Juan Morlock. Records from the project will be curated at the Center for Archaeological Studies at Texas State University. The 7,400-linear-foot by 100-foot wide alignment (17 acres) was considered the Area of Potential Effect (APE). Survey of the APE consisted of systematic pedestrian coverage, including discretionary shovel tests. The work was carried out on March 1, 2018. Sixteen shovel tests were excavated in areas that had less than 30 percent ground visibility or placed in areas that appeared to be undisturbed. No artifacts were discovered during the excavation of the shovel tests. No cultural materials were observed on the ground surface. No sites were recorded or revisited as a result of the survey. Therefore, there are no historic properties present within the project area. It is Terracon's recommendation that there are no historic properties eligible for State Antiquities Landmark designation or National Register of Historic Places inclusion that will be affected by future construction of the proposed sanitary sewer line. In the unlikely event that human remains or artifacts are discovered during construction, those activities should cease in the vicinity of the remains and Terracon, the Texas Historical Commission's Archeology Division, or other proper authorities should be contacted.

The political fallout from the release of the Guide to the Proposed Basin Plan in the Murray‐Darling is illustrative of the difficulties associated with reallocating water resources in this context. The response of Minister Burke has been somewhat predictable, with a resurgent interest in public subsidy of irrigation infrastructure evident. This article is used to examine the policy background to the Guide and critically consider further subsidy of irrigation infrastructure. The article concludes that infrastructure investment at the expense of the public purse will fail to deal with the problems at hand and generate a plethora of additional future problems.

The City of Temple has proposed the Little River Basin Water and Wastewater Lines project where water and wastewater lines will be constructed in southeast Temple, Bell County, Texas. The project engineer, Kasberg Patrick and Associates LP, retained Terracon Consultants, Inc. to conduct a systematic, intensive pedestrian survey of the approximately 73.4-acre project area. Because the City of Temple, a political subdivision of the State of Texas, sponsored the project, the proposed undertaking is subject to compliance with the Antiquities Code of Texas and oversight from the Texas Historical Commission (THC). In addition, the survey meets the standards for compliance under Section 106 of the National Historic Preservation Act of 1966, as amended, should federal funding or permitting be required for the project. The cultural resources survey was carried out under Texas Antiquities Permit Number 9392, issued to Caitlin Gulihur, MA, RPA, Principal Investigator. Fieldwork was carried out by Caitlin Gulihur with assistance from Archeological Technician Matthew Larsen. Records from the project will be curated at the Center for Archaeological Studies at Texas State University. The alignments for water and wastewater lines, totaling 36,000 linear feet, with construction corridor widths of no more than 100 feet, was considered the Area of Potential Effect (APE). The acreage of the APE is approximately 73.4 acres. Survey of the APE consisted of systematic pedestrian coverage, including discretionary shovel tests. The work was carried out on April 27- 29 and May 1, 2020. Seventy-six shovel tests were excavated in areas that appeared previously undisturbed. Cultural materials were not observed during the excavation of shovel tests. Isolated finds, consisting of three concrete drainage features, agricultural equipment, and a small scatter of glass, ceramic, and metal artifacts in a secondary context, were observed during the course of the survey. Previously recorded site 41BL1371, recorded adjacent to the project alignment, was not revisited during the course of the survey. No archaeological sites were recorded or revisited during the course of the survey. Given the absence of eligible historic properties within the APE, it is Terracon's recommendation that the proposed project be allowed to proceed as currently designed. In the unlikely event that human remains or cultural features are discovered during construction, construction should cease in the vicinity of the remains and Terracon, the Texas Historical Commission's Archeology Division, or other proper authorities shall be contacted. On June 27, 2020, the THC concurred with the recommendations in the draft report.

Abstract Most native Amazonian crops were domesticated in the periphery of the basin. The upper Madeira River basin is an important part of this periphery where several important crops were domesticated and others are suspected to have been domesticated or arrived early. Some of these crops have been reasonably well studied, such as manioc, peanut, peach palm, coca and tobacco, while others are not as well known, such as the hot peppers Capsicum baccatum and C. frutescens, and still others need confirmation, such as cocoyam and annatto. We review the information available for manioc, peach palm, Capsicum, peanut, annatto and cocoyam. The state-of-the-art for Capsicum frutescens, annatto and cocoyam is insufficient to conclude definitively that they were domesticated in the upper Madeira, while all the others have at least one of their origins or centers of diversity in the upper Madeira.

This paper aims to study what factors affect the adoption of online trading towards brokers in Hong Kong. By using the adoption model, Decomposed Version Theory of Planned Behavior (DTPB), we identify the factors that affect brokers towards online trading. A hypothesized model has been proposed to design the questionnaire. A statistical analysis has been conducted to investigate whether the attributes, variables, and belief structure of the proposed model correlated with each other or not. After such analysis, the factors that influenced brokers' behavior have been identified as well as the strengths of their relationships. Such results are very helpful to support the planning of related parties in launching Internet trading.

This book addresses managerial and technical aspects of the contamination of river basins in the former Soviet Union and Central Europe, and confronts them with case studies on similar problems in Western Europe and the United States. It describes the actual prevailing conditions and discusses the main lines of strategies, practices, and techniques that are essential for remediation

The 27th Annual Conference on Pacific Basin Finance, Economics, Accounting, and Management was held at National Taiwan University, Taiwan on June 15th and 16th, 2019. The first conference was held at Rutgers University in 1993. Since then, the conference has been held in Hong Kong (1994, 1998), Taipei (1995, 1999. 2003, 2006, 2011, 2016), Bangkok (2000, 2004, 2009), Rutgers (1996, 2001, 2005, 2012, 2018), Singapore (1997, 2002, 2017), Vietnam (2007, 2015), Australia (2008, 2013), China (2010), and Japan (2014). The program co-directors of the conference were Cheng-Few Lee, Rutgers University, USA, and Ming-Jen Lin, National Taiwan University, Taiwan.