Spatiotemporal Variations of Carbon Dioxide (CO2) at Urban Neighborhood Scale: Characterization of Distribution Patterns and Contributions of Emission Sources

2021 ◽  
pp. 103646
Author(s):  
Xing-Hang Zhu ◽  
Kai-Fa Lu ◽  
Zhong-Ren Peng ◽  
Hong-Di He ◽  
Si-Qing Xu
Keyword(s):  
Carbon Dioxide ◽  
Distribution Patterns ◽  
Emission Sources ◽  
Spatiotemporal Variations ◽  
Urban Neighborhood ◽  
Scale Characterization ◽  
Neighborhood Scale ◽  
Carbon Dioxide Co2 ◽  
Characterization Of Distribution

scholarly journals Pattern of Occurrence of Leukemia at a Teaching Hospital in Eastern Region of Nepal - A Six Year Study

2009 ◽  
Vol 48 (173) ◽  
Author(s):  
Ritu Kulshrestha ◽  
SP Sah
Keyword(s):  
Acute Myeloid Leukemia ◽  
Myeloid Leukemia ◽  
Distribution Patterns ◽  
Eastern Region ◽  
Lymphoid Leukemia ◽  
Time Period ◽  
The World ◽  
Characterization Of Distribution ◽  
Acute Myeloid

INTRODUCTION:Pattern of leukemia is known to vary widely throughout the world. The characterization of distribution patterns of different subtypes of leukemia in Nepal needs further study. We wanted to study the leukemia pattern in our institute.METHODS:A retrospective study of 196 cases of leukemia, diagnosed at BPKIHS, between January 1997 to December 2002 was done. We analyzed the pattern of leukemia at BPKIHS by morphological subtype, gender, age at diagnosis, time period of diagnosis (seasonality), and geographic distribution.RESULTS:Morphological sub typing showed that 121 cases were of acute leukemia and 75 of chronic leukemia. Chronic myeloid leukemia constituted the single largest group comprising 35.2 % of all cases, followed by acute myeloid leukemia (28.57 %) and acute lymphoid leukemia (19.9 %). Maximum numbers of cases were from the lowlands while least number of cases were from the mountain districts. Results were compared with literature from Nepal and other countries. This is the second series of leukemia from Nepal.CONCLUSIONS:The data published in this study reflects the leukemia pattern in the eastern region of Nepal. The pattern and distribution of AML, CML, ALL was similar to that in the developed western countries while the lesser frequency of CLL was similar to that in Southeast Asian regionKey Words:leukemia, pattern, eastern Nepal, seasonality.

scholarly journals Synthesis and characterization of amine-impregnated silica gel for potential carbon dioxide (CO2) absorption

2019 ◽  
Vol 1349 ◽  
pp. 012100
Author(s):  
N F Mohamad ◽  
N H Abdul Rani ◽  
M Onn ◽  
S I Sayed Jamaludin ◽  
A S I Ahmad Shafiq ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Silica Gel ◽  
Synthesis And Characterization ◽  
Co2 Absorption ◽  
Carbon Dioxide Co2 ◽  
Potential Carbon

Understand distribution of carbon dioxide to interpret crop growth data: Australian grains free-air carbon dioxide enrichment experiment

2011 ◽  
Vol 62 (10) ◽  
pp. 883 ◽  
Author(s):  
Mahabubur Mollah ◽  
Debra Partington ◽  
Genn Fitzgerald
Keyword(s):  
Carbon Dioxide ◽  
Co2 Concentration ◽  
Distribution Patterns ◽  
Crop Growth ◽  
Carbon Dioxide Enrichment ◽  
Growth Data ◽  
Performance Goal ◽  
Wind Speeds ◽  
Free Air ◽  
Carbon Dioxide Co2

Carbon dioxide (CO2) is the most important greenhouse gas, predicted to increase globally from currently 386 to 550 μmol mol–1 by 2050 and cause significant stimulation to plant growth. Consequently, in 2007 and 2008, Australian grains free-air carbon dioxide enrichment (AGFACE) facilities were established at Horsham (36°45′07″S lat., 142°06′52″E long., 127 m elevation) and Walpeup (35°07′20″S lat., 142°00′18″E long., 103 m elevation) in Victoria, Australia to investigate the effects of elevated CO2, water supply and nitrogen fertiliser on crop growth. Understanding the distribution patterns of CO2 inside AGFACE rings is crucial for the interpretation of the crop growth data. In the AGFACE system, the engineering performance goal was set as having at least 80% of the ring area with a CO2 concentration [CO2] at or above 90% of the target concentration at the ring-centre for 80% of the time. The [CO2] was highly variable near the ring-edge where CO2 is emitted and declined non-linearly with the distance downwind and wind speeds. Larger rings maintained the target [CO2] of 550 μmol mol–1 at the ring-centres better than the smaller rings. The spatial variation of [CO2] depended on ring size and the gap between fumigation and canopy heights but not on wind speeds. The variations in the inner 80% of the rings were found to be higher in smaller rings, implying that the larger rings had more areas of relatively uniform [CO2] to conduct experiments.

Characterization of a 7% carbon dioxide (CO2) inhalation paradigm to evoke anxiety symptoms in healthy subjects

2005 ◽  
Vol 19 (5) ◽  
pp. 494-503 ◽  
Author(s):  
Stefano Zanone Poma ◽  
Stefano Milleri ◽  
Lisa Squassante ◽  
Gianluca Nucci ◽  
Massimo Bani ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Healthy Subjects ◽  
Anxiety Symptoms ◽  
Carbon Dioxide Co2

scholarly journals Inhomogeneity Based Characterization of Distribution Patterns on the Plasma Membrane

2016 ◽  
Vol 12 (9) ◽  
pp. e1005095 ◽  
Author(s):  
Laura Paparelli ◽  
Nikky Corthout ◽  
Benjamin Pavie ◽  
Devin L. Wakefield ◽  
Ragna Sannerud ◽  
...  
Keyword(s):  
Plasma Membrane ◽  
Distribution Patterns ◽  
Characterization Of Distribution

scholarly journals Synthesis and Characterization of Copper Impregnated Mesoporous Carbon as Heterogeneous Catalyst for Phenylacetylene Carboxylation with Carbon Dioxide

2020 ◽  
Vol 21 (1) ◽  
pp. 77
Author(s):  
Putri Nurul Amalia ◽  
Iman Abdullah ◽  
Dyah Utami Cahyaning Rahayu ◽  
Yuni Krisyuningsih Krisnandi
Keyword(s):  
Carbon Dioxide ◽  
Surface Area ◽  
Mesoporous Carbon ◽  
High Surface ◽  
High Surface Area ◽  
Bet Surface Area ◽  
Soft Template ◽  
Average Pore ◽  
Carbon Dioxide Co2

Carbon dioxide (CO2) is a compound that can potentially be used as a carbon source in the synthesis of fine chemicals. However, the utilization of CO2 is still constrained due to its inert and stable nature. Therefore, the presence of a catalyst is needed in CO2 conversion. This study aims to synthesize copper impregnated mesoporous carbon (Cu/MC) as a catalyst for phenylacetylene carboxylation reaction with CO2 to produce phenylpropiolic acid. The synthesis of mesoporous carbon was performed via the soft template method. The as-synthesized Cu/MC material was characterized by FTIR, SAA, XRD, and SEM-EDX. BET surface area analysis of mesoporous carbon showed that the material has a high surface area of 405.8 m2/g with an average pore diameter of 7.2 nm. XRD pattern of Cu/MC indicates that Cu has been successfully impregnated in the form of Cu(0) and Cu(I). Phenylacetylene carboxylation reaction with CO2 was carried out by varying reaction temperatures (25, 50, and 75 °C), amount of catalyst (28.6, 57.2, and 85.8 mg), type of base (Cs2CO3, K2CO3, and Na2CO3), and variation of support. The reaction mixtures were analyzed by HPLC and showed that the highest phenylacetylene conversion of 41% was obtained for the reaction at 75 °C using Cs2CO3 as a base.

scholarly journals Pore-scale characterization of carbon dioxide storage at immiscible and near-miscible conditions in altered-wettability reservoir rocks

2021 ◽  
Vol 105 ◽  
pp. 103232
Author(s):  
Abdulla Alhosani ◽  
Qingyang Lin ◽  
Alessio Scanziani ◽  
Edward Andrews ◽  
Kaiqiang Zhang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Storage ◽  
Pore Scale ◽  
Reservoir Rocks ◽  
Scale Characterization

scholarly journals Design and Development of a Carbon Footprint Calculation Model for Universiti Tenaga Nasional

2019 ◽  
Vol 8 (4) ◽  
pp. 6236-6239
Keyword(s):  
Carbon Dioxide ◽  
Carbon Footprint ◽  
Carbon Dioxide Emission ◽  
Co2 Reduction ◽  
Calculation Model ◽  
Emission Sources ◽  
Global Awareness ◽  
Literature Reviews ◽  
Carbon Dioxide Co2 ◽  
College Of Engineering

Carbon footprint is the amount of a greenhouse gas (GHG) produced as a result of human activities, usually expressed in equivalent kilograms of carbon dioxide (CO2). As the amount of greenhouse gases emission increases, the global temperature increases. In the context of a global awareness of the climate change, carbon footprint has recently become extensively calculated and ways to reduce it are proposed. The purpose of this research is to calculate the amount of carbon footprint discharged by students in College of Engineering (COE), Universiti Tenaga Nasional (UNITEN). From this research a model to calculate the carbon dioxide emission released from the activities done by the COE students particularly, is developed. Literature reviews are done leading to an explanation of what emission categories should be presented in a CO2 calculation for a university. This includes emission sources in each buildings, activities and services in COE particularly. Conducting survey is one of the methods to get the data from the students and staffs directly. From this data, the calculation is done and tabulated in the Excel template. From this template model, the carbon footprint for each or total students of COE can be known. Referring to this data, CO2 reduction strategy in COE particularly and UNITEN generally can be proposed.

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