Bimetal heterointerfaces towards enhanced electro-activation of O2 under room condition

2021 ◽  
pp. 127271
Author(s):  
Min Sun ◽  
Xin-Tian Hu ◽  
Hui-Hui Liu ◽  
Bao-Jun Yang ◽  
Chuanpi Wang ◽  
...  
Keyword(s):  
Room Condition

scholarly journals Interface engineering strategies towards Cs2AgBiBr6 single-crystalline photodetectors with good Ohmic contact behaviours

2020 ◽  
Vol 8 (1) ◽  
pp. 276-284 ◽  
Author(s):  
Yangyang Dang ◽  
Guoqing Tong ◽  
Wentao Song ◽  
Zonghao Liu ◽  
Longbin Qiu ◽  
...  
Keyword(s):  
Single Crystal ◽  
Ohmic Contact ◽  
Interface Engineering ◽  
Single Crystalline ◽  
Ag Electrodes ◽  
Room Condition ◽  
Photo Response

Cs2AgBiBr6 single crystal photodetectors using Ag electrodes under different wavelength at room condition showed the excellent photo-response with Ohmic-contact among the different electrodes (Au, Ag and Al).

Catalytic wet air oxidation of dye pollutants by polyoxomolybdate nanotubes under room condition

2009 ◽  
Vol 86 (3-4) ◽  
pp. 182-189 ◽  
Author(s):  
Yang Zhang ◽  
Dongliu Li ◽  
Yang Chen ◽  
Xiaohong Wang ◽  
Shengtian Wang
Keyword(s):  
Catalytic Wet Air Oxidation ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
Dye Pollutants ◽  
Room Condition

Using Activated Diatomite as Adsorbent for Treatment of Arsenic Contaminated Water

2020 ◽  
Vol 850 ◽  
pp. 16-21
Author(s):  
Hoc Thang Nguyen ◽  
Phong Thanh Dang
Keyword(s):  
Specific Surface ◽  
Adsorption Capacity ◽  
Surface Area ◽  
Specific Surface Area ◽  
Contaminated Water ◽  
Viet Nam ◽  
High Porosity ◽  
Room Condition ◽  
Main Chemical Composition ◽  
Adsorbent Capacity

Diatomite or diatomaceous earth (DE) is one of materials which can be used as an adsorbent to treat heavy metal ions from waste water, even there are many factories used it to clean the water for drinking. However, natural DE (raw DE) has very low adsorption capacity because of low specific surface area. In this work, natural DE from Lam Dong province, Viet Nam was demagnetized to remove iron and activated by HCl solution for 90 minutes with concentration of 10% at room condition. Adsorbent capacity was evaluated using As solution and the results show that the activated diatomite has adsorption capacity three times higher than that of raw DE, and the specific surface area of activated diatomite was increased 47.5% with the main chemical composition of 90.8% SiO2 and high porosity

scholarly journals Data Transmission Method on a Room Condition Telemonitoring Application (IoT)

2019 ◽  
pp. 169
Author(s):  
Midriem Mirdanies
Keyword(s):  
Processing Speed ◽  
Data Transmission ◽  
Processing Time ◽  
Communication Media ◽  
Raspberry Pi ◽  
Transmission Method ◽  
Iot Applications ◽  
Room Condition ◽  
Transmission Data ◽  
Data Transmission System

Data transmission system in IoT applications such as telemonitoring, using cable or wireless, requires a robust data transmission method. In this paper, a room condition telemonitoring application has been made where all data are read from raspberry pi, and sent to a pc server every minute using LAN and Wifi media, then update to a webserver. The data are sent using the method proposed in this paper which using the UDP mechanism with several improvements. Experiments have been done using LAN and Wifi, and it is found that the data can be received perfectly, although there are interferences from communication media. The average processing time on a raspberry pi is 19 ms, while the average processing time on the pc server is 5 us. In addition, the average processing speed of the transmission data from raspberry pi to a pc server until ack is received by raspberry pi using LAN media is 0.04 second, while using Wifi media is 0.08 seconds. Based on the experiments, it was found that the proposed method was successfully implemented in the room condition telemonitoring.

Fast catalytic degradation of organic dye with air and MoO3:Ce nanofibers under room condition

2009 ◽  
Vol 92 (3-4) ◽  
pp. 333-340 ◽  
Author(s):  
Wei Li ◽  
Shun Zhao ◽  
Bin Qi ◽  
Yang Du ◽  
Xiaohong Wang ◽  
...  
Keyword(s):  
Catalytic Degradation ◽  
Organic Dye ◽  
Room Condition

scholarly journals Fabrication of Core-Shell Structural SiO2@H3[PM12O40] Material and Its Catalytic Activity

2014 ◽  
Vol 2014 ◽  
pp. 1-8
Author(s):  
Xin Yang ◽  
Junhai Wang ◽  
Qi Zhang ◽  
Xu Wang ◽  
Linlin Xu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalysts ◽  
Sol Gel ◽  
Operating Conditions ◽  
Core Shell ◽  
Catalytic Wet Air Oxidation ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
Heterogeneous Catalytic ◽  
Room Condition

Through a natural tree grain template and sol-gel technology, the heterogeneous catalytic materials based on polyoxometalate compounds H3[PM12O40] encapsulating SiO2: SiO2@H3[PM12O40] (SiO2@PM12, M = W, Mo) with core-shell structure had been prepared. The structure and morphology of the core-shell microspheres were characterized by the XRD, IR spectroscopy, UV-Vis absorbance, and SEM. These microsphere materials can be used as heterogeneous catalysts with high activity and stability for catalytic wet air oxidation of pollutant dyes safranine T (ST) at room condition. The results show that the catalysts have excellent catalytic activity in treatment of wastewater containing 10 mg/L ST, and 94% of color can be removed within 60 min. Under different cycling runs, it is shown that the catalysts are stable under such operating conditions and the leaching tests show negligible leaching effect owing to the lesser dissolution.

scholarly journals The Effects of Diffuser Geometry on Rotating Stall Behavior

1988 ◽  
Author(s):  
M. V. Otugen ◽  
R. M. C. So ◽  
B. C. Hwang
Keyword(s):  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Critical Mass ◽  
Rotating Stall ◽  
Radius Ratio ◽  
Impeller Speed ◽  
Vaneless Diffuser ◽  
Room Condition ◽  
Inlet Opening

Experiments were carried out in a model vaneless diffuser rig to investigate the rotating stall phenomenon and its relation to diffuser geometry. The experimental rig consisted of an actual impeller which was used to deliver the flow to the vaneless diffuser. Mass flow rate through the system could be adjusted by varying the rotational speed of the impeller at a fixed inlet opening or by changing the inlet opening at a fixed impeller speed. The flow exited to room condition. As such, the rig was designed to investigate the fluid mechanics of vaneless diffuser rotating stall only. Attention was focused on the effects of diffuser width and radius on rotating stall. Three diffuser widths and three outlet radii were examined. The width-to-inlet radius ratio varied between 0.09 and 0.142 while the outlet-to-inlet radius ratio varied between 1.5 and 2. Results showed that the critical mass flow rate for the onset of rotating stall decreases with decreasing diffuser width. The critical mass flow rate is affected also by the diffuser radius ratio; larger radius ratios resulted in smaller critical mass flow rates. The ratio of the speed of rotation of the stall cell to impeller speed is found to decrease with increasing number of stall cells. This relative speed also decreases with increasing diffuser radius ratio, but it is largely independent of the diffuser width.

A New Method and Characterization for Pollution Preventing of Camera Window

2008 ◽  
Vol 381-382 ◽  
pp. 481-484
Author(s):  
Dong Hoon Kim ◽  
Jun Yeob Song ◽  
M.R. Lee
Keyword(s):  
Conventional Method ◽  
Indium Tin Oxide ◽  
Magnetic Force ◽  
Pollution Prevention ◽  
Oxide Coating ◽  
New Method ◽  
Air Supply ◽  
Room Condition ◽  
Coating Window ◽  
Positive Ion

This research is focused on the development of protecting system for window. In detail, we tried to develop pollution preventing system of a glass, mirror, or camera lens. For this, the new method for efficient pollution prevention was designed and the characteristic evaluation for developing the system is partly performed. Formerly, the method using air purge is generally used for preventing the pollution of camera window. However, the conventional method often induces contaminations due to back flow of air purging. These pollutants can be crucial damage to the camera window and peripheral materials especially in clean room condition. And the conventional method always requires air supply, therefore it is difficult to apply the method where air source can not be supplied such as traveling crane located at mountain altitudes. To solve above mentioned the problem, the efficient concept for preventing pollution of camera window is proposed in this research. Without air purging, we proposed the new method using repulsion induced by electrifying dirty or moisture to positive magnetic force with high-voltage charge and then injecting gas to the ITO(Indium Tin Oxide) coating window for generating positive ion. To sum up, in this research, we aim to develop an efficient pollution preventing system for camera window based on the new method through characteristic evaluation and stabilization of the designed system.

scholarly journals Evaluation of Force Degradation Characteristics of Orthodontic Latex Elastics in Vitro and In Vivo

2007 ◽  
Vol 77 (4) ◽  
pp. 688-693 ◽  
Author(s):  
Tong Wang ◽  
Gang Zhou ◽  
Xianfeng Tan ◽  
Yaojun Dong
Keyword(s):  
Artificial Saliva ◽  
Statistical Significance ◽  
Repeated Measure ◽  
Control Groups ◽  
Time Intervals ◽  
Room Condition ◽  
In Vivo Testing ◽  
Initial Force

Abstract Objective: To evaluate the characteristics of force degradation of latex elastics in clinical applications and in vitro studies. Materials and Methods: Samples of 3/16-inch latex elastics were investigated, and 12 students between the ages of 12 and 15 years were selected for the intermaxillary and intramaxillary tractions. The elastics in the control groups were set in artificial saliva and dry room conditions and were stretched 20 mm. The repeated-measure two-way analysis of variance and nonlinear regression analysis were used to identify statistical significance. Results: Overall, there were statistically significant differences between the different methods and observation intervals. At 24- and 48-hour time intervals, the force decreased during in vivo testing and in artificial saliva (P < .001), whereas there were no significant differences in dry room conditions (P > .05). In intermaxillary traction the percentage of initial force remaining after 48 hours was 61%. In intramaxillary traction and in artificial saliva the percentage of initial force remaining was 71%, and in room conditions 86% of initial force remained. Force degradation of latex elastics was different according to their environmental conditions. There was significantly more force degradation in intermaxillary traction than in intramaxillary traction. The dry room condition caused the least force loss. Conclusions: There were some differences among groups in the different times to start wearing elastics in intermaxillary traction but no significant differences in intramaxillary traction.

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