检索结果-内蒙古大学图书馆

Citric acid-polyurethane-chitosan-based innovative biocomposites as candidates of antibacterial dialyzer membrane

Journal of International Dental and Medical Research 2018年第2期11卷 718-722页

作者： Santoso, Evlyn Anggraini Widiyanti, Prihartini Nabilla, Fathania Rahayu, Novita Putri Rahmania, Adita Wardani Department of Biomedical Engineering Faculty of Science and Technology Universitas Airlangga Surabaya Indonesia Biomedical Study Program Faculty of Science and Technology Universitas Airlangga Surabaya Indonesia

Hemodialysis treatment is a replacement therapy renal function. Hemodialysis therapy with reuse system causes a risk of bacterial infection. In addition, routine vascular access by hemodialysis patients also factors of bacterial contamination which can increase the comorbidity and mortality rates of patients. This research aims to obtain biocompatibility and antibacterial properties by adding concentration chitosan in three variations. The functional group test showed the presence of a bond between PU-CA-PES-CS at a certain wavelength. SEM test proved that the pores produced on dialyzer membrane are still within the size range for the hemodialysis application at 0.001-0.1 μm. Hemolysis test results showed that the percentage of hemolysis in Sample A, Sample B, Sample C, and Sample D were 4.18%, 3.34%, 2.30% and 1.67% respectively. The percentage of hemolysis at less 5% is safe for contact with blood. Antibacterial test results revealed that PES-PU-CA membrane samples coated with chitosan variation are antibacterial. It can be seen from the formation of clear zone around the sample disc with diameter of 6,946-11,086 mm. PES-PU-CA dialyzer membrane coated with chitosan is a safe composite and potentially applicable as an antibacterial dialyzer membrane based on functional group test, antibacterial test, hemolysis assay, SEM, and cytotoxicity test. © 2018 University of Dicle.

关键词： Antibacterial Chitosan Membrane dialyzer Polyethersulfone Polyurethane

来源：评论

学校读者我要写书评

暂无评论

Blue carbon dynamics in mangroves and conservation of their services in the Coral Triangle Ecoregion, Southeast Sulawesi, Indonesia

引用

Journal of Physics: Conference Series 2021年第1期1899卷

作者： Kangkuso Analuddin La Ode Kadidae La Ode Muhammad Yasir Andi Septiana La Syahrir Saban Rahim David Pratama LD Abdul Fajar Kazuo Nadaoka Biotechnology Study Program Halu Oleo University Kendari Indonesia Chemistry Study Program Halu Oleo University Kendari Indonesia Marine Science Study Program Halu Oleo University Kendari Indonesia Fisheries Science Postgraduate Program Halu Oleo University Kendari Indonesia Geography Study Program Halu Oleo University Kendari Indonesia Chemistry Science Postgraduate Program Halu Oleo University Kendari Indonesia Marine & Fisheries Faculty Sebelas November University Kolaka Indonesia Dept. of Trans-disciplinary Science and Engineering Tokyo Institute of Technology Japan

Coral triangle eco-region is hotspot of coastal blue carbon, and contributes to the global carbon cycling. This study aimed to elucidate the blue carbon dynamics in mangroves and their importance services as source of blue carbon in the coastal zone of coral triangle ecoregion. The blue carbon content in mangrove sediment was analyzed, while blue carbon production and its export frommangroves leaf litterfallwasestimated. The results showed that the blue carbon content in mangrove sediment was significantly higher in deep of 40-50 cm than other layers(P< 0.05). The annual blue carbon production (g C/m2/year) was 495.80 for R. mucronata, 572.52 for C. tagal and 335.56 for R. apiculata. Moreover, the annual blue carbon exported g C/m2/year was 148.74 for R. mucronata, 171.76 for C. tagal and 100.68 R. apiculata. Overallcarbon production and carbon export from these mangrove species were 1403.88 and 421.18g C/m2/year, ***, huge blue carbon production and export by mangroves in this region contribute to the global carbon cycling in the coastal and marine environments. Thus, conservation of mangroves and their services is very important for maintenance the coastal productivity in the coral triangle eco-region.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Geological Controls on Thermal Manifestation Occurences in Batu Gede and Batu Kapur, Subang Regency: A Preliminary Result

引用

IOP Conference Series: Earth and Environmental Science 2021年第1期732卷

作者： Betseba br Sibarani Juni Yesy Sianipar Danny Daniel Lestari Apriani Grandy Danakusumah Suryantini Geothermal Research Group Geothermal Master Program ITB FTTM Bandung Indonesia Geothermal Engineering Master's Program Faculty of Mining and Petroleum Engineering Institut Teknologi Bandung Jl. Ganesha 10 Bandung 40132 Indonesia Geology Padjajaran University Bandung Indonesia. Applied Geology Research Group Faculty of Earth Science and Technology Bandung Indonesia.

Batu Gede and Batu Kapur are administratively located in Subang Regency, West Java, precisely in the northern part of Tangkuban Perahu Geothermal Working Area. Characteristics of the manifestations in Batu Gede and Batu Kapur are generally bicarbonate neutral pH warm springs and their location exposed in the foot of Tangkuban Perahu Volcano. Despite the similar chemical characteristic of those two manifestations, there is a significant characteristic difference between them. Spring with low pH with the pungent smell emerges in the Batu Gede not far from neutral pH bicarbonate warm spring. The aim of this research is to determine control of the occurrence and relationship of manifestation in both areas by conducting geological mapping. Surface manifestations are controlled by a geological process associated with primary and secondary permeability. Both manifestations emerge dominantly in the control of fault as a secondary permeability. Primary permeability also controls the occurrence of manifestations but not significant. Batu Gede manifestations are dominantly controlled by overstepping structure, while Batu Kapur are dominantly controlled by intersections between structures. Based on high content of SO4−2, acid pH, and the presence of sulfur, the acid manifestation might be correlated with magmatic activity beneath Batu Gede's manifestation.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Measurement of perception and implementation of sustainable supply chain management at PT Tetra Pak Indonesia

引用

IOP Conference Series: Earth and Environmental Science 2020年第1期426卷

作者： Helena J Kristina Agustina Christiani Eric Jobiliong Letycia Therio Reza Andreanto Industrial Engineering Study Program Universitas Tarumanegara Jakarta Indonesia Industrial Engineering Study Program Faculty of Science and Technology Universitas Pelita Harapan Lippo Village Tangerang Indonesia PT Tetra Pak Indonesia

Sustainable supply chain management (SSCM) is a form of proactive action taken by the company and its supply chain to remain competitive by introducing products and production processes that are environmentally friendly and socially *** Tetra Pak Indonesia as a company engaged in the processing and packaging for food and beverages, is committed to reduce the environmental impact of all operations and prioritize environmental aspects for each product and solution offered. Although there have been many sustainability efforts undertaken by PT Tetra Pak Indonesia, the perspective and implementation of its sustainable supply chain management has never been measured. This research was conducted to measure the perception and implementation of sustainable supply chain management (SSCM) activities of *** Pak Indonesia, in order to add information about the development of sustainable supply chain management practices in Indonesia. Data were collected in two ways: in depth interviews and questionnaires. Based on the result of interview and questionnaire, *** Pak Indonesia gets an actual implementation index value of SSCM activities of 0.88, and has an overall perception index value of 0.85. This indicates that PT. Tetra Pak Indonesia is a company that has a perception towards sustainability and has actually implemented SSCM activities.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Effect of plant growth-promoting rhizobacteria and bionanomaterial membrane applications on chemical properties of peat soils

引用

IOP Conference Series: Earth and Environmental Science 2022年第1期959卷

作者： Y Istikorini Nurhafifah A P P Hartoyo A Solikhin E A Octiaviani Department of Silviculture Faculty of Forestry and Environment IPB University (Bogor Agricultural University) Bogor 16680 Indonesia Southeast Asia Regional Center for Tropical Biology (SEAMEO BIOTROP) Southeast Asia Minister of Education Organization Bogor West Java Indonesian Green Action Forum (IGAF) Indonesia Recently at: Study Program of Forestry Engineering Sub Department of Process and Biological Engineering Sumatera Institute of Tecnology Lampung 35365 Indonesia

Peat soils have low fertility and are very acidic. Applications of plant growth-promoting rhizobacteria (PGPR) and bionanomaterial membranes (BNMs) have high potentials to alter soil pH. However, both applications have never been applied, especially in peat soils. This research aimed to analyze the effect of PGPR and BNMs applications on the chemical properties of peat soils in agroforestry sites. The method used was the sampling of disturbed peat soil. The results showed that after the application of dolomite, manure, PGPR and BNMs, pH values change from very acidic (3.60) to slightly alkaline (7.65), CN ratio from very low (1.20) to high (16), C-organic still very high (43.47%), N-total from very low (1.20%) to very high (1.47%), P-potential from moderate (26.18 mg/100g) to very high (3764.04 mg/100g), Ca-dd from low (4.11 cmol/Kg) to very high (31.59 cmol/kg), K-dd still very high (1.24 cmol/Kg), Mg-dd from high (3.72 cmol/Kg) to very high (23.68 cmol/Kg), Al-dd from very high (5.66 cmol/kg) to low (<0.05 cmol/kg), and base saturation from very low (10.36% ) to very high (100%). The soil fertility was more fertile. The applications of PGPR and BNMs are recommended to improve the peat soil fertility quickly.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Floating Houses Technology as Alternative Living on The Water

引用

IOP Conference Series: Materials Science and engineering 2020年第1期797卷

作者： Tri Endangsih Ikaputra Program Study of Architecture Faculty of Engineering Budi Luhur University Jakarta INDONESIA Department of Architecture and Planning Faculty of Engineering Gadjah Mada University Yogyakarta INDONESIA

Increasing population has resulted in increased housing needs, but currently the available land for housing is decreasing. In addition, climate change has resulted in rising sea levels. With these three problems, it is necessary to develop a place to live with limited land and utilize the potential of Indonesian waters. The efforts that have been made by the current government by building settlements vertically, but have not been able to meet the needs of the residence. One type of house that can be developed by utilizing the potential of the waters is floating houses. A floating house is a residential building that is built on water by applying floating structures, materials, and shapes to suit the construction site. The floating house will function properly with proper planning, especially in the selection of technology at the bottom, floats, and the stability of the building above the water. Besides technology, other things that need to be taken into consideration are the selection of materials and the selection of the type of structure that will be applied. This technological innovation is expected to be able to meet the needs of residences that can utilize the territorial waters.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Institutional capacity building of Bina Hang Tuah youth organization and Tambaan Indah waste bank in the context of plastic waste management in Tambaan Urban Village, Pasuruan City, East Java Province, Indonesia

引用

IOP Conference Series: Earth and Environmental Science 2020年第1期584卷

作者： Rudianto E Yudaningtyas R D Kasitowati Marine Science Study Program Faculty of Fisheries and Marine Science University of Brawijaya Malang Indonesia Department of Electrical Engineering Faculty of Engineering Universitas Brawijaya Malang Indonesia Marine Science Study Program Faculty of Fisheries and Marine Science Universitas Brawijaya Malang Indonesia

Plastic waste in Indonesia has reached 64 million tons per year of which 3.2 million tons per year is discharged into the sea. Because of this condition, Indonesian coastal waters experience degradation. Plastic waste on the coast can be utilized to add value in the form of premium fuel, diesel and kerosene, using a destilator machine. The study was carried out on the coast of Tambaan Village, Pasuruan, East Java. The results indicate that the beach is clean and the processing results are in line with the community expectations. However, the beach has become dirty again and plastic waste has accumulated. The purpose of this study is to examine the relationship between youth organizations which are responsible for processing plastic waste, and waste banks that currently receive waste from the community. The methods used are analytical Hierarchy Process (AHP) and Partial Least Square (PLS). The two methods are used in the analysis of organizational capacity building and cooperative relations between Bina Hangtuah Youth organization and waste banks. The results of the analysis indicate that operating agreements and revenue sharing based on a 'win-win' solution including increasing human resources are an important basis for increasing institutional capacity.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Updated Geologic Structures and Stratigraphy of the Darajat Geothermal Field in Indonesia

引用

IOP Conference Series: Earth and Environmental Science 2021年第1期732卷

作者： Rindu Grahabhakti Intani Satrio Wicaksono Glenn Golla Suryantini Geothermal Engineering Master's Program Faculty of Mining and Petroleum Engineering Institut Teknologi Bandung Jl. Ganesha 10 Bandung 40132 Indonesia Star Energy Geothermal Salak Ltd Sentral Senayan 2 Building 26th floor Central Jakarta

The main objectives of the evaluation of the geologic structures and stratigraphy of the Darajat geothermal field are to refine and update both the Darajat conceptual and geologic1 models. Re-interpretation of the borehole image logs, additional petrographic analysis of rock cuttings and cores, integration of subsurface data from the wells drilled during 2009-2011, and recent resource observations allowed definition of at least seven (7) lithologic units based on the dominant rock type. The updated stratigraphy of the reservoir was correlated with the surface rocks to develop a volcano-stratigraphy and geochronology of the Darajat geothermal system. The andesite-intrusive complex, which comprises the Darajat geothermal reservoir and the hypothesized sub-volcanic portion of an earlier liquid-dominated geothermal system, belongs to the Kendang Volcanics and makes up subsurface Units A and B. The interpretation of the major volcano-tectonic features and structures at Darajat was refined through the analysis of the Light Detection and Ranging (LIDAR) data/imagery that was acquired in 2014. The LIDAR Digital Elevation Model (DEM) hill-shade map shows several conspicuous volcanic vents in Puncak Cae, Gagak and Kiamis. The prominent Kendang Fault, which extends to the Kamojang Field in the northeast, might be a section of the ring structure of an earlier volcano, herein, called Kendang. Wellbore image data from several wells suggest that the Kendang Fault may dip at 70° eastward. Although needing further substantiation, we hypothesize that the decompression event that preceded the development of the steam-dominated geothermal reservoir at present might be related to the eruption of the Kendang volcano. The Gagak Fault is another prominent surface structure and believed to form during the eruption of the resurgent Gagak volcano after the eruption of the older Kendang volcano.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Utilization of plastic waste processing for oil fuel at Tambaan Beach, Pasuruan City

引用

IOP Conference Series: Earth and Environmental Science 2020年第1期524卷

作者： R Rudianto E Yudaningtyas T D Lelono R D Kasitowati Marine Science Study Program Faculty of Fisheries and Marine Science Universitas Brawijaya Malang Indonesia Department of Electrical Engineering Faculty of Engineering Universitas Brawijaya Malang Indonesia Fisheries Resource Utilization Study Program Faculty of Fisheries and Marine Science Universitas Brawijaya Malang Indonesia

The amount of waste in Indonesia is estimated to reach 68 million tons in 2019, of which 9.52 million tons is a plastic waste. With this amount, Indonesia is ranked second in the world as the largest producer of plastic waste. One area that suffers from plastic waste is the coastal area. This plastic waste is difficult to decompose and cause environmental problems. Likewise, it happened on the Tambaan coast in Tambaan sub-district, Panggungrejo subdistrict, Pasuruan city. Currently, accumulation of plastic waste is evident throughout the coastal area. The accumulation of scattered plastic waste and its proximity to the residents' settlements has become a hotbed of mosquitoes and caused a pungent smell. The Serving Doctoral program at Universitas Brawijaya offers a solution to process plastic waste into fuel oil such as diesel, kerosene, and premium. The technology used was Muryani's distillation from Wlingi, Blitar Regency. The technology can change certain types of plastic waste to produce fuel. Karang Taruna Bina Hang Tuah was acted as a reliable partner to assist the implementation of the technology on site. This study aims to strengthen the capacity of Karangtaruna in Tambaan Village to be more concerned about the environmental problems of Tambaan beach by processing waste that has been polluted by plastic waste. The results of plastic waste treatment showed that 10 kg of dried plastic waste can be transformed into diesel, premium and kerosene with the efficiency value of 60%, 35%, and 15%, respectively.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Source of Carbon Dioxide Emissions Equivalent to Plant-Based Control Concept with Dynamic System in Prabumulih City, South Sumatra Province

引用

IOP Conference Series: Earth and Environmental Science 2021年第1期810卷

作者： Y Pratiwi A Rejo A Fariani M Faizal Study Program of Environmental Science Universitas Sriwijaya South Sumatera Indonesia Sekolah Tinggi Ilmu Teknik Prabumulih South Sumatera Indonesia Faculty of Agriculture Universitas Sriwijaya South Sumatera Indonesia Faculty of Engineering Universitas Sriwijaya South Sumatera Indonesia

Emissions of carbon dioxide equivalent (CO2eq) will continue to increase along with human activities that continuously carry out land conversion activities, increased use of vehicles, increased waste, and other activities. This study aims to analyze the factors causing an increase in carbon dioxide emissions in urban areas and plant-based control using causal loops with a dynamic systems approach. Through the analysis method using the causal loop, then determined the cause and effect relationship of each CO2eq emission source variable and its control efforts in Prabumulih City. The results of this study describe the causal loop relationship, both positive and negative relationships between variables from urban CO2eq emission sources and emission control by optimizing plant species as an absorber of CO2eq emissions.

关键词：

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：