Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 33631 - 33660 of 302512

Full-Text Articles in Physical Sciences and Mathematics

Effects Of The Agglomerated Fracturing Fluid On The Transportation Of Pulverized Coal And Its Mechanism, Song Jinxing, Shi Junke, Liu Jianzhuang Feb 2022

Effects Of The Agglomerated Fracturing Fluid On The Transportation Of Pulverized Coal And Its Mechanism, Song Jinxing, Shi Junke, Liu Jianzhuang

Coal Geology & Exploration

During the drainage process, the pulverized coal moves with the carrier fluid in supporting fractures, resulting in the blockage of the fractures and then a decrease in the permeability of the coal reservoir and the conductivity of the supporting fractures. For the purpose of exploring the effects of the properties of the agglomerated fracturing fluid on the transportation of pulverized coal and its mechanism, the coal samples from Urumqi Hedong Mining Area in southern Junggar Basin coalfield are selected as the research object, with distilled water, active water fracturing fluid(1.5%KCl), and agglomeration fracturing fluid(1.5%KCl+0.05%AN) as the carrier fluids. Through the …

Go to article

Present Situation And Prospects Of Coal-Derived Gas Exploration And Development In Shanxi Province, Gong Jieli, Li Guofu, Li Dehui, Liu Liangliang, Wang Zheng, Xu Yun, Wang Xuchao Feb 2022

Present Situation And Prospects Of Coal-Derived Gas Exploration And Development In Shanxi Province, Gong Jieli, Li Guofu, Li Dehui, Liu Liangliang, Wang Zheng, Xu Yun, Wang Xuchao

Coal Geology & Exploration

Coal-derived gas includes coalbed methane(CBM), shale gas and tight sandstone gas. CBM development is of practical significance to ensure coal mine safety, increase clean energy supply, improve regional energy consumption structure, and promote the clear water and blue sky program, which is more in line with the national strategic requirements of developing green energy, achieving carbon neutrality and peaking carbon dioxide emissions. Shale gas and tight sandstone gas are of great significance to improve China’s energy structure and achieve the goal of carbon neutrality and peaking carbon dioxide emissions. Based on the comprehensive analysis of the beneficial exploration and successful …

Go to article

Evaluation Of Coalbed Methane Extraction Effect Based On 3d Geological Modeling Technology: An Example Of Sihe Mine In Jincheng City, Jiang Zaibing, Yang Jianchao, Li Yong, Pang Tao Feb 2022

Evaluation Of Coalbed Methane Extraction Effect Based On 3d Geological Modeling Technology: An Example Of Sihe Mine In Jincheng City, Jiang Zaibing, Yang Jianchao, Li Yong, Pang Tao

Coal Geology & Exploration

Three-dimensional geological modeling can intuitively and visually evaluate the effect of coalbed methane(CBM) dynamic drainage, and provide guidance for subsequent adjustments to development plans. With the help of 3D geological modeling software, No.3 Coal Seam of west-second panel is taken as the research object. A geological model that can reflect the spatial geometric changes and structural characteristics of coal seams, and the dynamic changes of coal reservoir attribute parameters is established based on the analysis of geological and productivity data and numerical simulation, to realize the dynamic evaluation of the CBM extraction effect in the study area. The constructed three-dimensional …

Go to article

Geochemical Characteristics And Significance Of Water Produced By Coalbed Methane Wells In Lu’An Mining Area, Hua Mingguo, Tian Lin, Zhang Yan, Li Jia, Cao Yongheng Feb 2022

Geochemical Characteristics And Significance Of Water Produced By Coalbed Methane Wells In Lu’An Mining Area, Hua Mingguo, Tian Lin, Zhang Yan, Li Jia, Cao Yongheng

Coal Geology & Exploration

Hydro-geochemistry analysis is an important method for CBM exploration and development research. In this paper, the distribution characteristics of salinity, H/O stable isotope and ion concentration in sample water was investigated, and the optimal CBM development area was analyzed by the characteristics of regional structural distribution and the CBM development history. The testing water was from the No.3 CBM well of the Shanxi Formation Permian system in the Lu’an Mining area in the south-central part of Qinshui Basin. The results show that there are three high salinity areas in the mining area, with an average groundwater salinity of 2 000-3200 …

Go to article

Characteristics Of Roof Water Inflow And Control Technology For High Intensity Mining In Dongsheng Mining Area，Shenfu Coalfield, Xu Feng, Jin Dewu, Yang Maolin, Wang Shidong, Huang Huan, Dang Yakun Feb 2022

Characteristics Of Roof Water Inflow And Control Technology For High Intensity Mining In Dongsheng Mining Area，Shenfu Coalfield, Xu Feng, Jin Dewu, Yang Maolin, Wang Shidong, Huang Huan, Dang Yakun

Coal Geology & Exploration

In view of the threat of roof water disasters in coal mining in western China, the water inflow data of 50 working faces are counted in Dongsheng Mining Area of Shenfu Coalfield, and five typical water inflow characteristics are summarized, which are dynamic recharge-led sustained growth type, the increasing first and then stabilizing type with “dynamic-static” reserves acting together, continuous stability of micro inflow, differential hydrogeological conditions locally prominent type, and the increasing first and then decreasing type dominated by static reserves. According to the law of each type of water inrush, the corresponding ideas and measures of water disaster …

Go to article

Risk Assessment Of Water Inrush From Coal Seam Floors Based On Multiple Methods, Ren Junhao, Wang Xinyi, Wang Qi, Wang Junzhi, Zhang Bo, Guo Shuitao Feb 2022

Risk Assessment Of Water Inrush From Coal Seam Floors Based On Multiple Methods, Ren Junhao, Wang Xinyi, Wang Qi, Wang Junzhi, Zhang Bo, Guo Shuitao

Coal Geology & Exploration

Five factors including the thickness of the aquifer, the complexity of the fault, the water pressure of the aquifer, the unit water inflow of the aquifer, and mining height of 51 boreholes in No.2, No.10 and No.12 Coal Mines of Pingdingshan Coalfield are selected as the index factors. On the basis of the constant weight calculated by the analytic hierarchy process and grey relational analysis, the variable weights of each index factor are determined by applying the variable weight theory. By using the matter-element extension method, fuzzy variable set theory, catastrophe theory, and fuzzy comprehensive evaluation method, the water inrush …

Go to article

The Reflected Radio Wave Method For Detecting Coal Seam Faults In Mining Face, Gu Huanqi, Wu Rongxin, Shen Guoqing, Hu Ze Feb 2022

The Reflected Radio Wave Method For Detecting Coal Seam Faults In Mining Face, Gu Huanqi, Wu Rongxin, Shen Guoqing, Hu Ze

Coal Geology & Exploration

Mine radio wave exploration can be used for coal seam geological structure exploration. With its advantages of portability and good effect, it has become a conventional and necessary means for coal seam geological structure exploration. At present, the energy attenuation of radio wave signal in coal seam is fast, and the transmission radio wave detection of working face is restricted in large width coal seam. On this basis, the radio wave reflection exploration method of coal seam working face is proposed. Firstly, the electric model of two-dimensional coal measure strata is constructed by numerical simulation to analyze the field strength …

Go to article

Development Of A Methane Concentration Monitoring Sensor In Underground Boreholes Of Coal Mines, Cong Lin Feb 2022

Development Of A Methane Concentration Monitoring Sensor In Underground Boreholes Of Coal Mines, Cong Lin

Coal Geology & Exploration

At present, during underground drilling operations in coal mines, the methane concentration monitoring system can only reflect the total drainage volume of methane at the borehole, and cannot observe the effect of methane drainage of a certain section of the borehole. With the increase of the borehole depth for underground methane drainage, the effect of methane drainage changes greatly along the length of the borehole. There is a big difference in the effective extraction radius at different hole depths, leading to greater difficulty in arranging the boreholes for methane extraction, and increased uncertainty. In response to this problem, a methane …

Go to article

Potential Of Oil-Rich Coal Resources In Shaanxi Province And Its New Development Suggestion, Ma Li, Wang Shuangming, Duan Zhonghui, Yang Fu, Fu Deliang, He Dan, Zhang Liwei Feb 2022

Potential Of Oil-Rich Coal Resources In Shaanxi Province And Its New Development Suggestion, Ma Li, Wang Shuangming, Duan Zhonghui, Yang Fu, Fu Deliang, He Dan, Zhang Liwei

Coal Geology & Exploration

Under the requirement of carbon peak and carbon neutral targets, the low carbon development and utilization of coal resources in Shaanxi Province is imperative. The law of tar yield from high to low in each coalfield of Shaanxi Province was revealed based on more than 5 000 sets of coal quality data: northern Shaanxi Triassic Coalfield, northern Shaanxi Jurassic Coalfield, Shanbei carboniferous Permian Coalfield, Huanglong Jurassic Coalfield, Weibei carboniferous Permian Coalfield. And three types of oil-rich coal were classified: oil-rich coal type, oil-rich coal-high oil-coal type, oil-rich coal-oil-coal type. According to the calculation method of coal resources, Shaanxi Province has …

Go to article

Research On The Graphitization Potential Of Coal In Sichuan And Chongqing, Li Jing, Wang Lu, Liu Yongwang, Luan Jinhua, Zhang Ruigang, Zhang Sen, Wang Anmin Feb 2022

Research On The Graphitization Potential Of Coal In Sichuan And Chongqing, Li Jing, Wang Lu, Liu Yongwang, Luan Jinhua, Zhang Ruigang, Zhang Sen, Wang Anmin

Coal Geology & Exploration

The graphitization of coal is beneficial to enhancing the strategic guarantee ability of graphite resources and promoting the efficient utilization of coal measures mineral resources and transformation and upgrading of coal enterprises. The development potential of coal-based graphite resources in Sichuan and Chongqing is evaluated in the critical period of energy and mineral reform and transformation. On the basis of the analysis of coal graphitization, the precursors for coal-based carbon materials and coalfield geology, the major coal types, coal quality and characteristics of macerals, Principal Component Analysis(PCA) is applied to explore the development potential of coal-based graphite in Sichuan and …

Go to article

Quantification And Mechanism Analysis Of Meso-Damage Of High-Temperature Granite Under Different Cooling Modes, Zhang Sen, Shu Biao, Liang Ming, Lu Wei, Hu Yongpeng, Xue Hui Feb 2022

Quantification And Mechanism Analysis Of Meso-Damage Of High-Temperature Granite Under Different Cooling Modes, Zhang Sen, Shu Biao, Liang Ming, Lu Wei, Hu Yongpeng, Xue Hui

Coal Geology & Exploration

Cooling shock is an effective method to increase the permeability of geothermal reservoir by causing fractures on high temperature rock. For the purpose of quantitatively analyze the damage degree of granite caused by cooling shock at different heating temperatures and explore the damage mechanism under the action of cooling shock, the damage of high temperature granite samples under was analyzed under natural cooling and water cooling conditions by means of thin section observation and SEM scanning technology. The results show that when the heating temperature is increased from 200°C to 800°C, the crack density of the section A at the …

Go to article

Detection Performance Of The Azimuthal Electromagnetic Wave Logging Instrument At Coal-Rock Interface In Horizontal Wells, Zhang Yi, Kang Zhengming, Feng Hong, Han Xue, Li Fei, Li Xin Feb 2022

Detection Performance Of The Azimuthal Electromagnetic Wave Logging Instrument At Coal-Rock Interface In Horizontal Wells, Zhang Yi, Kang Zhengming, Feng Hong, Han Xue, Li Fei, Li Xin

Coal Geology & Exploration

The advance and accurate identification of coal-rock interfaces is one of the key technologies to realize intelligent mining, improve mining efficiency and reduce cost. Azimuthal electromagnetic wave logging has achieved good results in lithologic interface identification of petroleum logging, but the identification of coal-rock interface is seldom studied. For the purpose of studying the applicability and detection performance of azimuthal electromagnetic wave in the coalfield logging environment, the one-dimensional generalized reflection coefficient method is used to calculate the magnetic field component, and the fast Hankel transform is used to accelerate the integral calculation speed. What is more, the effects of …

Go to article

Search For A Light Higgs Boson In Single-Photon Decays Of ϒ (1s) Using ϒ (2s) →Π+Π- ϒ (1s) Tagging Method, S. Jia, C. P. Shen, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu, P. Behera, K. Belous, J. Bennett, M. Bessner, V. Bhardwaj, B. Bhuyan, T. Bilka, A. Bobrov, D. Bodrov Feb 2022

Search For A Light Higgs Boson In Single-Photon Decays Of ϒ (1s) Using ϒ (2s) →Π+Π- ϒ (1s) Tagging Method, S. Jia, C. P. Shen, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu, P. Behera, K. Belous, J. Bennett, M. Bessner, V. Bhardwaj, B. Bhuyan, T. Bilka, A. Bobrov, D. Bodrov

Faculty and Student Publications

We search for a light Higgs boson (A0) decaying into a τ+τ- or μ+μ- pair in the radiative decays of ϒ(1S). The production of ϒ(1S) mesons is tagged by ϒ(2S)→π+π-ϒ(1S) transitions, using 158×106 ϒ(2S) events accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant A0 signals in the mass range from the τ+τ- or μ+μ- threshold to 9.2 GeV/c2 are observed. We set the upper limits at 90% credibility level (C.L.) on the product branching fractions for ϒ(1S)→γA0 and A0→τ+τ- varying from 3.8×10-6 to 1.5×10-4. Our results represent an approximately twofold improvement on the current …

Go to article

An Analysis Of Community-Based Values Informing Land Management On The Midwestern Prairie Band Potawatomi Nation Of Kansas, Usa, Heidi Mehl, Diana L. Restrepo-Osorio, Melinda Howard, Cynthia Annett Feb 2022

An Analysis Of Community-Based Values Informing Land Management On The Midwestern Prairie Band Potawatomi Nation Of Kansas, Usa, Heidi Mehl, Diana L. Restrepo-Osorio, Melinda Howard, Cynthia Annett

IGC Proceedings (1993-2023)

The focus of this study is to examine the interface between land management practices and values within a tribal community in rural midwestern North America. The Prairie Band Potawatomi Nation (PBPN) reside on a tribal reservation with a checkerboard distribution amongst private, non-tribal landowners. Previous studies have indicated that landowners may have different value-systems leading to variations in land-management practices. This can impose discontinuous land management in areas within shared biological boundaries, such as watersheds, especially between tribal and non-tribal entities. Preliminary spatial analysis in and around the PBPN landscape determined that the tribally-managed lands present more vegetative cover per …

Go to article

A Policy Brief On Adopting The Somali Camel For Enhanced Profitability And Pastoral Resilience In Northern Kenya, Simon G. Kuria, A. O. Adongo, S. Murithi, O. K. Koech, J. T. Njoka, P. Kamande Feb 2022

A Policy Brief On Adopting The Somali Camel For Enhanced Profitability And Pastoral Resilience In Northern Kenya, Simon G. Kuria, A. O. Adongo, S. Murithi, O. K. Koech, J. T. Njoka, P. Kamande

IGC Proceedings (1993-2023)

Persistent drought and high temperatures in Isiolo and Marsabit counties of northern Kenya repeatedly devastate livestock herds particularly cattle making the pastoralists less resilient, more vulnerable to climate change and poor. To address this challenge, an IGAD funded project promoted adoption of Somali camel breed, trained farmers on improved management and also estimated potential profitability of rearing the camel. Through the project, trainers were trained and facilitated to train 240 peri-urban Somali camel producers in Isiolo and Marsabit on breeding, health, routine husbandry and marketing. Impact study documenting positive stories of change was conducted at the end. Producers who hitherto …

Go to article

Red Clover Improves The Energy To Protein Balance Of Lucerne-Grass Herbage, X. Godin, Gaëtan F. Tremblay, P. Seguin, S. Bittman, D. Hunt, J. Hakl, G. Bélanger, M.-N. Thivierge, A. Bertrand, M. Thériault, A. Claessens Feb 2022

Red Clover Improves The Energy To Protein Balance Of Lucerne-Grass Herbage, X. Godin, Gaëtan F. Tremblay, P. Seguin, S. Bittman, D. Hunt, J. Hakl, G. Bélanger, M.-N. Thivierge, A. Bertrand, M. Thériault, A. Claessens

IGC Proceedings (1993-2023)

Low ratio of readily fermentable carbohydrate to soluble protein concentrations in lucerne (Medicago sativa L.) leads to inefficient use of herbage N by ruminants. To improve the energy to protein balance in lucerne-grass herbage, four proportions of lucerne:red clover (Trifolium pratense L.) were compared in mixtures with and without grasses: timothy (Phleum pratense L.) and tall fescue (Schedonorus arundinaceus Schreb. Dumort.) in Quebec (QC, Canada). In the first post-seeding year, red clover proportion averaged (across grasses and four harvests) 0, 37, 59, and 74% in herbage mixtures. Increasing the proportion of red clover caused a slight …

Go to article

Structural Features Of Condensed Tannins Influence Their Antimethanogenic Potential In Forage Plants, S. Verma, J.-P. Salminen, S. Wolffram, F. Taube, R. Blank, A. Susenbeth, C. Malisch Feb 2022

Structural Features Of Condensed Tannins Influence Their Antimethanogenic Potential In Forage Plants, S. Verma, J.-P. Salminen, S. Wolffram, F. Taube, R. Blank, A. Susenbeth, C. Malisch

IGC Proceedings (1993-2023)

Despite years of research on the antimethanogenic potential of condensed tannins (CT), their large-scale application is inhibited by a substantial variability in previous studies with regards to their impact on ruminant nutrition. This variability mainly results from the complexity of CT structures, and their impact on methane emissions is often unaccounted for. Hence, this study (a) evaluated the variability in antimethanogenic potential across six forage species, (b) linked methane emissions to tannin activity, and (c) determined the impact of CT structural features on methane abatement. Six forage species were grown in a greenhouse under controlled environmental conditions, namely, sainfoin ( …

Go to article

Intra-Population Variation Of Hair And Fingernail Stable Hydrogen, Oxygen, Carbon And Nitrogen Isotopes In London, Ontario, Canada Residents During The Covid-19 Pandemic, Sawyer C E Rowe Feb 2022

Intra-Population Variation Of Hair And Fingernail Stable Hydrogen, Oxygen, Carbon And Nitrogen Isotopes In London, Ontario, Canada Residents During The Covid-19 Pandemic, Sawyer C E Rowe

Electronic Thesis and Dissertation Repository

Lockdowns and travel restrictions during the COVID-19 pandemic forced a significant fraction of London, Ontario, Canada residents to remain in one location for long enough to reach isotopic equilibrium with their primary drinking water source(s). This situation created ideal natural conditions for measuring the isotopic fractionation between the stable hydrogen and oxygen isotopes of drinking water and hair or nail tissues, and for determining the magnitude of intra-population variation in tissue δ2H and δ18O. Hair and nail of participants who reported exclusively drinking London municipal tap water spanned much larger δ2H and δ18 …

Go to article

Round Bale Silage – Farmer Results In Kentucky, Jimmy C. Henning, Jeff Lehmkuhler, Brandon Sears, Corinne Belton, Levi Berg, Don Sorrell, April Wilhoit Feb 2022

Round Bale Silage – Farmer Results In Kentucky, Jimmy C. Henning, Jeff Lehmkuhler, Brandon Sears, Corinne Belton, Levi Berg, Don Sorrell, April Wilhoit

Kentucky Alfalfa and Stored Forage Conference

The ability to make silage in round bale packages allows producers to avoid rain damage and produce high quality stored forage. The proliferation of bale wrappers (both individual and inline types) has made this technology more available to producers. Although the process for making baleage is well documented, producers have experienced poor fermentation and in some cases botulism toxicity from baleage. The parameters of good silage are well known and include pH below 5.0 and lactic acid concentrations above 3% on a DM basis. However, tests of farmer produced baleage reveals that often these target values are not achieved. To …

Go to article

Optimizing Quality With Bale Density And Time Of Wrapping, Jessica Williamson Feb 2022

Optimizing Quality With Bale Density And Time Of Wrapping, Jessica Williamson

Kentucky Alfalfa and Stored Forage Conference

No abstract provided.

Go to article

Alfalfa Insect Update: 2021 Growing Season, Lee H. Townsend Feb 2022

Alfalfa Insect Update: 2021 Growing Season, Lee H. Townsend

Kentucky Alfalfa and Stored Forage Conference

Alfalfa weevils (AW) and fall armyworms (FAW) were newsmakers for very different reasons during the 2021 alfalfa growing season. An AW control failure with a pyrethroid in Kentucky drew attention to practices to manage insecticide resistance. A regional outbreak of FAWs resulted in significant damage to alfalfa and grasses along with a reminder of the unpredictable nature and difficult detection of this pest. While there are several effective FAW control options, it is challenging is to detect infestations in time to act.

Go to article

Mowing And Conditioning For Round Bale Silage: Equipment Adjustment And Harvest Management, Jessica Williamson Feb 2022

Mowing And Conditioning For Round Bale Silage: Equipment Adjustment And Harvest Management, Jessica Williamson

Kentucky Alfalfa and Stored Forage Conference

No abstract provided.

Go to article

Harvest Timing And Moisture Determination: Forage Drying Rates And Moisture Probe Accuracy, Benjamin M. Conner, Jimmy C. Henning Feb 2022

Harvest Timing And Moisture Determination: Forage Drying Rates And Moisture Probe Accuracy, Benjamin M. Conner, Jimmy C. Henning

Kentucky Alfalfa and Stored Forage Conference

Scott County Kentucky currently has a beef cattle herd of 28,509 head (USDA, 2017). These cattle utilize forage as a large part of their diets. Baleage is bales of wilted, high moisture forage which have been wrapped in several layers of UV‐resistant plastic and allowed to ensile like traditional chopped silage (Henning et al., 2021). Baleage has become another way for farmers to harvest and store forage to be used in cattle diets. It has some advantages over the traditional hay production in Kentucky. One advantage is it can be harvested, baled, and stored in a shorter period of time, …

Go to article

Species And Variety Options For Baleage, S. Ray Smith Feb 2022

Species And Variety Options For Baleage, S. Ray Smith

Kentucky Alfalfa and Stored Forage Conference

Any forage species can be made into baleage or silage. While baleage is a form of silage, I’m defining it here as baled forage (typically round bales) that is wrapped in plastic (individually or in a line) for the ensiling process to take place. And silage is typically chopped forage that is ensiled in an upright or bunker silo or blown into a silage tube. The chopping mixes all the material together and allows tight packing to remove oxygen therefore encouraging faster fermentation. With baleage there is no chopping to mix the forage, so it’s essential that the forage is …

Go to article

Forward Of Kentucky Alfalfa And Stored Forages Conference [2022], Jimmy C. Henning, S. Ray Smith, Christopher D. Teutsch Feb 2022

Forward Of Kentucky Alfalfa And Stored Forages Conference [2022], Jimmy C. Henning, S. Ray Smith, Christopher D. Teutsch

Kentucky Alfalfa and Stored Forage Conference

No abstract provided.

Go to article

The Van Der Waals Mixture Construct Of A P-X Two-Component Gas=Liquid Phase Diagram, Carl W. David Feb 2022

The Van Der Waals Mixture Construct Of A P-X Two-Component Gas=Liquid Phase Diagram, Carl W. David

Chemistry Education Materials

The van der Waals model, when applied to a mixture, is used to construct tie-line points on a liquid=vapor two phase p-x diagram.

Go to article

Attainability And Optimality: The Equalized Odds Fairness Revisited, Zeyu Tang, Kun Zhang Feb 2022

Attainability And Optimality: The Equalized Odds Fairness Revisited, Zeyu Tang, Kun Zhang

Machine Learning Faculty Publications

Fairness of machine learning algorithms has been of increasing interest. In order to suppress or eliminate discrimination in prediction, various notions as well as approaches have been proposed to impose fairness. Given a notion of fairness, an essential problem is then whether or not it can always be attained, even if with an unlimited amount of data. This issue is, however, not well addressed yet. In this paper, focusing on the Equalized Odds notion of fairness, we consider the attainability of this criterion and, furthermore, if it is attainable, the optimality of the prediction performance under various settings. In particular, …

Go to article

Designing Respectful Tech: What Is Your Relationship With Technology?, Noreen Y. Whysel Feb 2022

Designing Respectful Tech: What Is Your Relationship With Technology?, Noreen Y. Whysel

Publications and Research

According to research at the Me2B Alliance, people feel they have a relationship with technology. It’s emotional. It’s embodied. And it’s very personal. We are studying digital relationships to answer questions like “Do people have a relationship with technology?” “What does that relationship feel like?” And “Do people understand the commitments that they are making when they explore, enter into and dissolve these relationships?” There are parallels between messy human relationships and the kinds of relationships that people develop with technology. As with human relationships, we move through states of discovery, commitment and breakup with digital applications as well. Technology …

Go to article

Charged-Particle Interactions To Generate Novel Coatings And Materials, Pradnya D. Rao Feb 2022

Charged-Particle Interactions To Generate Novel Coatings And Materials, Pradnya D. Rao

Electronic Theses and Dissertations

A typical paper coating formulation contains anionically charged pigments and latex to provide a high-quality surface for printing. However, during application and drying, the latex can migrate to the surface or deep into the paper, resulting in weak coating layers or the need to use a high latex content to obtain the same strength properties. In this thesis, we have explored the introduction of cationically charged particles into the suspension as a way to reduce the amount of binder in the coatings, improve coating strength and reduce binder migration. With these aims in mind, we have generated cationic precipitated calcium …

Go to article

Silver Bow Creek/Butte Area Npl Site, Trec Inc., A Woodard And Curran Company Feb 2022

Silver Bow Creek/Butte Area Npl Site, Trec Inc., A Woodard And Curran Company

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Go to article

First Prev Next Last