Aiken Technical College

Warm-mix asphalt (WMA) is much like hot-mix asphalt (HMA), but it is produced at lower plant temperatures than conventional HMA. Key benefits of the reduced WMA production temperature include the reduction of fuel consumption and of emissions. Granite Construction performed two WMA paving demonstration projects from its Indio, California, facility in early 2008. Both projects were paved with WMA produced with the free water method (Astec Double Barrel Green). The objectives of these demonstrations were ( a) to demonstrate that WMA with reclaimed asphalt pavement could be produced and placed at lower temperatures while yielding mix properties and field compaction similar to those of conventional HMA and ( b) to construct field test sections so that WMA and HMA performance could be compared side by side. These objectives were accomplished by producing and placing the WMA and by completing an in-depth sampling and testing program to compare the WMA and HMA paved on similar test sections and produced with similar methods (the only exception was production temperatures). The initial field performance of the WMA and HMA has been similar, and the long-term performance will be monitored. The WMA demonstration objectives were achieved, with the WMA exhibiting mix properties and field compaction similar to those of the HMA, with slightly lower initial stiffness, as expected. The potential rutting concern with WMA has not been an issue in this arid Southern California climate, and the sections placed on the haul road into and out of the Indio plant have been exposed to significant truck traffic.

Community engagement remains a primary objective of public health practice. While this approach has been adopted with success in response to many community health issues, it is rarely adopted in chemical disaster response. Empirical research suggests that management of chemical disasters focuses on the emergency response with almost no community engagement for long-term recovery. Graniteville, an unincorporated and medically underserved community in South Carolina was the site of one of the largest chlorine exposures by a general US population. Following the immediate response, we sought community participation and partnered with community stakeholders and representatives in order to address community-identified health and environmental concerns. Subsequently, we engaged the community through regular town hall meetings, harnessing community capacity, forming coalitions with existing local assets like churches, schools, health centers, and businesses, and hosting community-wide events like health picnics and screenings. Information obtained from these events through discussions, interviews, and surveys facilitated focused public health service which eventually transitioned to community-driven public health research. Specific outcomes of the community engagement efforts and steps taken to ensure sustainability of these efforts and outcomes will be discussed.

Much is written at the elementary school level concerning bullying and the socioemotional needs of gifted and talented (GT) students; however, in the last 10 years, little qualitative research exists concerning the early adolescent GT age group. In the social environment of classroom life, early and current research indicates that many of these students experience neurotic perfectionism, overexciteabilities (OEs), developmental asynchrony, and bullying. The formation of autonomous classes (GT-only classes) has afforded some hope concerning the amelioration of such problems; nevertheless, in this study, detailed evidence of classroom bullying in the form of social ostracism and teasing has been found with this GT age group. If left unchecked, psychological autopsies have shown these students suffering emotional difficulties and even committing suicide as a result of school and classroom torment. With such potential for classroom bullying problems, few studies address what veteran teachers of early adolescent GT students do to keep students psychologically safe. Within the social milieu of classroom life, and in comparison to research standards, this study explores three efficacious teacher perspectives and practices.

Different approaches are necessary when community-based participatory research (CBPR) of environmental illness is initiated after an environmental disaster within a community. Often such events are viewed as golden scientific opportunities to do epidemiological studies. However, the authors believe that in such circumstances, community engagement and empowerment needs to be integrated into the public health service efforts in order for both those and any science to be successful, with special care being taken to address the immediate health needs of the community first, rather than the pressing needs to answer important scientific questions. The authors will demonstrate how they have simultaneously provided valuable public health service, embedded generalizable scientific knowledge, and built a successful foundation for supplemental CBPR through their on-going recovery work after the chlorine gas disaster in Graniteville, South Carolina.

Numerous permineralized axes of Middle Triassic age from Fremouw Peak, Antarctica show evidence of mechanical wounding and wound responses. These consist of both elongate and triangular-shaped scars. Some scars can be detected beneath subsequent secondary xylem, indicating that wounding occurred early in stem development. In other stems, scars remained open suggesting late wounding and the permanent disruption of the cambium. In cross section most stems display little cal1ustissue, but wound periderm can be seen along the margin of the scar. In some stems the wound phellogen has formed phellem and phelloderm within the wounded area oriented perpendicular to the growth rings. Although some scars resemble those produced by fires, we were unable to document the presence of charcoal around scars. In modem ecosystems wounds may be caused by other agents, including debris drifting in floods, flowing ice, avalanche s, and animals . Each of these potential sources is reviewed in relationship to the paleoclimate in the region during the Triassic.

Intensive care units are care centers where, in order to provide the maximum benefit to individuals whose life is in danger, many lifesaving technological tools and devices are present, and morbidity and mortality rates are high. In the intensive care unit, when classic treatments fail or become unbearable because of side effects, complementary methods have been suggested to be the best alternative. Complementary health approaches are methods that are used both for the continuation and the improvement of the well-being of an individual and as additions to medical treatments that are based on a holistic approach. These applications are especially helpful in the treatment of the stresses, anxieties, and other symptoms of unstable patients in the intensive care unit who do not tolerate traditional treatment methods well, increasing their psychological and physiological well-being, helping them sleep and rest. In intensive care patients, in order to decrease the incidence of postoperative atrial fibrillation, antiemetic and medicine needs, mechanical ventilation duration, and the intensity of the disease as well as to cope with symptoms such as pain, anxiety, physiological parameters, dyspnea, and sleep problems, body-mind interventions such as massage, reflexology, acupressure, aromatherapy, music therapy, energy therapies (healing touch, therapeutic touch, the Yakson method), and prayer are used as complementary health approaches.

No abstract available for this article.

No abstract available for this article.

This paper is to investigate both theoretically and experimentally the wave energy dissipation and air-pressure variation of a new type of breakwater having a pressurized air-chamber and two buoyancy tanks. The theoretical models are developed in this paper and they are shown to be in good agreement with experimental values. The new type of breakwater proposed in this paper is pointed out to attenuate the transmitted wave much better than the rectangular-shaped and concave-shaped breakwaters without the air-chamber.

INTRODUCTION: In 2005, a train derailment and subsequent chlorine spill ravaged the rural town of Graniteville in South Carolina, resulting in one of the worst chlorine gas exposures in US. HISTORY: Significant health and economic challenges persist in the community more than a decade later. Healthcare providers offered healthcare services to community members in the immediate aftermath of the disaster, and many still live in the community and continue to provide healthcare services. As such, healthcare professionals provide a unique and important perspective to help understand the impact of the disaster on the community's health. The purpose of this study was to explore healthcare providers' perspectives about the long-term effects of the disaster on community health, healthcare access, and wellbeing. METHODS: Semi-structured interviews were conducted with 30 healthcare providers who treated survivors of the Graniteville train disaster. A qualitative, essentialist, inductive thematic analytic approach was used to analyze study data. RESULTS: Four themes emerged regarding the disaster's long-term impact: effects of chlorine exposure on physical health, issues with healthcare access, residual effects of the disaster on personal and community wellbeing, and improving health and community wellbeing. CONCLUSIONS: Disaster recovery should not be considered solely an acute event; agencies must be prepared for long-term, potentially chronic ailments, particularly in underserved, rural communities. Efforts to address the long-term health needs of communities post-disaster should consider the perspectives of healthcare providers to offer a well-rounded assessment of community needs. Study findings can help inform future disaster response strategies in communities locally and globally.

Problems frequently occur during processing of raw cotton as a result of the build-up of deposits on the rolls and other parts of the processing machinery. These deposits have been related in part to the sugar content of cotton. A rapid method, designed for use at the plant location, was developed using a series of enzyme reactions in which the various sugars present in the cotton are converted to glucose. A second coupled enzyme reaction yields a compound which can be measured spectrophotometrically and is stoichiometrically equivalent to the amount of glucose present. This enzymatic method, which can differentiate between the types of sugars present on cotton, is characterized by simplicity, speed, sensitivity, and specificity. Applications of this enzyme assay to greige mill processing problems show tremendous potential for the textile industry.

Carotenoids are known for their lower environmental pollution, lower costs, shorter extraction time compared to regular extraction methods and higher extraction efficiency. Ultrasound has significant advantages in the extraction of a great number of biologically active compounds including carotenoids. Benefits of using ultrasound for extraction of various compounds are numerous and include effective mixing and micro-mixing, more efficient energy transfer, reduced thermal and concentration gradients, reduced temperature. The aim of this work was to investigate the influence of two-frequency ultrasound main parameters such as ultrasonic intensity, sonication time, and temperature. Application of two-frequency ultrasound (simultaneous influence of ultrasound with frequency of 20?46 kHz, intensity of 1.5?2.5 W/cm2 and frequency of 1.0?2.0 MHz, intensity of 2.0?3.0 W/cm2) raises the percentage of ?-carotene extraction from biomass of the fungus Blakeslea trispora from 90?92% up to 98?99% in comparison with one frequency ultrasound. The recommended oil temperature for the extraction process is 35?C, because lower temperature leads to reduction of percentage of ?-carotene extraction, and higher temperature promotes unjustified increase of expenditure of energy.

The authors describe the Substance Information Program, a university alcohol and other drug (AOD) assessment and intervention program. The Substance Information Program is housed in a counseling department's on‐site training and research clinic and gives counselors‐in‐training an opportunity to gain practical addictions training.

This paper is the result of research and operation modeling of the new systems for cooling of cutting tools based on thermoelectric module. A copper inlay with thermoelectric module on the back side was added to a standard turning tool for metal processing. For modeling and simulating the operation of thermoelectric module, finite element method was used as a method for successful solving the problems of inhomogeneous transient temperature field on the cutting tip of lathe knives. Developed mathematical model is implemented in the software package PAK-T through which numerical results are obtained. Experimental research was done in different conditions of thermoelectric module operation. Cooling of the hot module side was done by a heat exchanger based on fluid using automatic temperature regulator. After the calculation is done, numerical results are in good agreement with experimental. It can be concluded that developed mathematical model can be used successfully for modeling of cooling of cutting tools.

The Coated Fabrics industry is too big for one person or even one company to represent accurately. In this article we attempt only to highlight a couple of major trends and some representative products — not to readdress the already comprehensive treatments of the whole industry [1-5].

Age and Geochemical Character of Granite and Syenite Plutons in the Grenville Province of Southeastern Ontario; Insights into Magmatism During the Ottawan Orogeny and Evidence of the Frontenac Intrusive Suite in the Sharbot Lake Domain

Joel R. Bender, John G. Hadley, Glass Fiber Manufacturing and Fiber Safety: The Producer's Perspective, Environmental Health Perspectives, Vol. 102, Supplement 5: Biopersistence of Respirable Synthetic Fibers and Minerals (Oct., 1994), pp. 37-40

Insecticides and/or repellents incorporated into a tent coating matrix are used to provide long term efficacy against mosquitoes. Tents prepared with Permethrin contained in the interior coating and tested for one year at Gainesville, Florida USDA Laboratories under the direction of Dr. Carl Schreck showed long term efficacy beyond original expectations. The use of plasticizer to mobilize con trolled release of permethrin to interior tent coating surface contributed to long term efficacy as well as the protection of permethrin from ultraviolet degradation by the fabric substrate and exterior coating. On a global basis the resurgence of malaria, yellow fever, dengue, and other vector borne diseases indicate a need to further explore environmentally correct methods of insecticide usage. Development of other pest control fabrics is an area of high activity.

Abstract Transfection, a fundamental molecular biology technique, is crucial in introducing foreign DNA into cells. Despite its pivotal importance, mastering this technique remains a formidable challenge. In this study, we employed the calcium phosphate reagent and conducted a systematic exploration through time-dependent experiments to assess its impact on human primary splenic fibroblast cells (HSFC). The results precisely delineate optimal time frames for achieving enhanced transfection efficiency, offering conclusive evidence for the efficacy of calcium phosphate in transient transfection within the cells. The data significantly advances our comprehension of HSFC reactions, contributing to refining transfection methodologies with broader implications for biomedical applications.

The implementation of the proposals contained in the 1961 White Paper Better Opportunities in Technical Education has led to the now familiar pattern of courses in technical education — diagnostic General (G) courses leading to either Ordinary National Certificate (ONC) courses or Technician (T) courses, and Craft (C) courses. Besides the creation of the new G courses, almost all the ONC, T, and C courses have been revised to fit the new pattern.