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Battery Charger Buying Guide

Battery Charger Buying Guide

2021-11-19
Digah Company
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The mission of Guangzhou House Empire Construction&Furnishing Co.,Ltd is to be the recognized manufacturer in providing the high quality Battery Charger. To make this come true, we are continuously reviewing our production process and taking steps to improve the quality of the product as much as possible; we aim for continuous improvement on the effectiveness of the quality management system. To successfully built a global brand image of Digah Company, we are dedicated to immersing our customers in the brand experience in every interaction we engage with them. We continue to inject new ideas and innovations into our brands to meet the high expectations from the market.To better serve customers, Digah Company offers customization service to meet the specific requirements on the size, style, or design of the Battery Charger and other products. Customers can also get custom packaging.
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Is There a Non Software Equivalent of Stellarium?
Is There a Non Software Equivalent of Stellarium?
Yes. A planetarium projector. Lot's of planetariums are using Stellarium now as their "projector." Stellarium costs a lot less than the maintenance of an actual of an actual projector does. You actually have to go to a planetarium when a public show is scheduled. heavens_above IS SOFTWARE. Your question does not make sense.1. Is software from NCH Software safe? [closed]Some (many) years ago, their Prism converter was good. Now they use their website to hack your computer - or so it seems. I simply updated what I had installed from them (Prism) and then decided to browse through the options. ..And there was the "TOOLBOX" with very short descriptions of what it supposed to offer. I clicked few links - nothing told me that I am installing applications. A bit later, while I was searching the web, a window comes up asking if I want to change my default searcg engine. I answered "NO" - and shortly after that I see a whole bunch of photoediting, sound-conversion, slide who and hell know what else installed on my computer. To top it off - the home page of both browsers I use changed to NCH, the Google Toolbar was replaced with something from NCH - of course, without anyone asking my permission. And that is with antivirus running. When I tried to uninstall the unwanted software using Windows Control Panel, the programs refused to uninstall, informing that I should finish the previuos "installation". (probably, another malicious code did not finish running by the time I switched off the internet connection just in case). I removed the NCH add-on in Firefox, changed the home page back to what it was - but when I restart Firefox, everything is back - which means the NCH gadgets and their home page. I had better luck with Explorer - there it cleaned up the NCH from the first try. Now back to uninstalling. I found the NCH folder and in the subfolders there (some 5 or 7 of them) were separate uninstallers for each one of their wonderful programs. Just one of them worked - the rest asked you for a feedback, tell you that all is uninstalled - and nothing changed. So I cleaned the registry with regedit - searching for "NCH Software" and other names in their folders and deleting each one of them. Still did not fix the Firefox. Now I have to run a deep virus scan and perhaps, restore the system to some previous points2. Which one is more difficult, development of software or the testing of software?Testing is a kind of skill related work whereas software writing is related to thinking (If developers implements his own algorithms). So software writing is more difficult.Skill can be acquired but thinking can not3. What is the purpose of OCR software?Optical character recognition refers to the branch of computer science that involves reading text from paper and translating the images into a form that the computer can manipulate (for example, into ASCII codes). An OCR system enables you to take a book or a magazine article, feed it directly into an electronic computer file, and then edit the file using a word processor. All OCR systems include an optical scanner for reading text, and sophisticated software for analyzing images. Most OCR systems use a combination of hardware (specialized circuit boards) and software to recognize characters, although some inexpensive systems do it entirely through software. Advanced OCR systems can read text in large variety of fonts, but they still have difficulty with handwritten text.4. Ripping software for Mac [duplicate]For copy protected dvds, do this :1, Use MacTheRipper to remove the protection.Handbrake is the best software now for DVD-movie ripping. Playback, just use Quicktime w/ Perian, Nice Player, or VLC.5. Possessive pronouns and software titlesThere are some goods that are purchasable and customizable, that provide the feeling that the good you own is "one-of-a-kind." With respect to cars, there is a level of true customization, and also a level of endearment, that leads to it being referred to as a personal possession.In the case of literature, whether it's of the written, spoken, recorded, or engineered kind, the concept of an urtext exists; that is, an authentic, immutable property of original literature that marks it as authoritative. Works of literature are titled for this reason -- to always identify a work as what it is. Normally we would purchase only a copy of these urtexts. In other cases, we may purchase versions of these, which may or may not be authoritative, but they still are not exactly customizable. However, you do not own the literature, you own a copy of it.For the common person to possess something truly authentic, unique, and authoritative, all in one item, is not so common. It's far more common for that original authentic source to be one that copies are created from, that people own. Because literature tends to be regarded as a collective, social experience in this way, we normally express that we do not own Pride and Prejudice but we may own a copy of it. However, even though the car may have already been built with options when you choose it at the lot, it's the fact that the one that is chosen and the one that's right next to it that looks the same from the outside may actually be very different inside, so it has been personalized or chosen to be yours, unlike others
High Power Input Coupler Prototype for Shanghai Hard X-ray Free Electron Laser Device
High Power Input Coupler Prototype for Shanghai Hard X-ray Free Electron Laser Device
On March 18, the first two sets of 1.3GHz high-power input coupler prototypes developed by the Aerospace Information Innovation Research Institute of the Chinese Academy of Sciences passed the expert acceptance organized by the Shanghai Institute of higher research of the Chinese Academy of Sciences and were officially delivered. At present, the Aerospace Institute has become the first unit in China to fully master the manufacturing and processing technology, clean cleaning, assembly, baking and high-power test aging of 1.3GHz coupler.Hard X-ray free electron laser deviceShanghai hard X-ray free electron laser (shine) is a major national science and technology infrastructure project with the largest investment and the longest construction cycle in China so far. The project task is to build a superconducting linac with an energy of 8gev, three undulator lines, three beam lines and the first batch of 10 experimental stations.The total length of the hard X-ray free electron laser device is about 3.1km. The project task is to build a superconducting linac with an energy of 8gev, three undulator lines, three beam lines and the first batch of 10 experimental stations. The construction contents of the device include: injector, main accelerator, Fel amplifier (undulator line), light speed line and experimental station, as well as public subsystems including beam diagnosis, control, laser, synchronization, data acquisition and processing, as well as supporting systems and facilities such as low temperature and public facilities.The construction site of hard X-ray free electron laser device is located in Zhangjiang Science City, with a total investment of nearly 10 billion. It is a core innovation project for Shanghai to build a science and innovation center with global influence and Zhangjiang comprehensive national science center. After completion, the device will become one of the most efficient and advanced free electron laser user devices in the world, provide cutting-edge research means such as high-resolution imaging, ultrafast process exploration and advanced structure analysis for physics, chemistry, life science, material science and energy science, and form a unique and interdisciplinary advanced scientific research platform.High power input coupler prototypeAfter completion, it will become one of the most efficient and advanced free electron laser user devices in the world, and can provide cutting-edge research means such as high-resolution imaging, ultrafast process exploration and advanced structure analysis for multiple disciplines. Among them, the 1.3GHz high power input coupler is one of the key components in the cryogenic acceleration module of superconducting linac. It continuously feeds microwave power into the superconducting cavity and provides energy to the beam. The performance of the coupler determines whether the linac can run stably and reliably for a long time.Entrusted by Shanghai Institute of advanced research, Aerospace Academy (formerly Institute of electronics, Chinese Academy of Sciences) started the domestic independent research and development of 1.3GHz coupler in September 2018. Relying on the relevant process technology of microwave electric vacuum devices, the project team organized technical breakthrough according to the technical indicators and process requirements of the coupler, successively broke through a number of key processes, and comprehensively mastered the process flow of coupler development.Clean assembly of coupler prototypeAt the same time, the project team completed the construction of the supporting level 10 clean room according to the cleanliness requirements of the coupler, and built a 1.3GHz coupler high-power test aging system platform according to the testing aging requirements of the coupler.In October 2019, the prototype of 1.3GHz high-power input coupler completed the high-power test and aging of pulse 28kw, continuous wave traveling wave 14kw (6h) and continuous wave standing wave 7KW (12h). This batch of coupler prototypes will be installed and debugged in the low-temperature module of the accelerator in the future, and further systematic verification tests will be carried out. Next, COSPAR will continue to complete the delivery of the second batch of coupler prototypes.
Basic Architecture and Solution of Pollution Source Video Monitoring
Basic Architecture and Solution of Pollution Source Video Monitoring
At present, most provinces in China have built on-line monitoring systems for different types of pollution sources, including sewage chemical enterprises, thermal power plants, chemical parks and key sewage treatment plants. Generally, various sensing sensors and monitors are deployed near the pollution sources through different types of sensing networks, Upload the collected data to the provincial / municipal environmental protection monitoring center to realize the real-time online monitoring of the discharge of major pollutants.1、 Pollution sources and video surveillanceThe essence of intelligent environmental protection is the combination of Internet of things technology and environmental informatization, and pollution source monitoring is an important part of intelligent environmental protection. Pollution sources can be divided into natural pollution sources and man-made pollution sources. Natural pollution sources refer to places where nature discharges harmful substances or causes harmful effects to the environment, such as active volcanoes. Man made pollution source refers to the pollution source formed by human activities, and it is also the main object of environmental protection research and control.Among the man-made pollution sources, according to the main objects of pollution, they can be divided into air pollution sources, water pollution sources and soil pollution sources. Among them, air pollution sources and water pollution sources are the two most influential sources on human life, and they are also the main application of video surveillance in intelligent environmental protection.At present, most provinces in China have built on-line monitoring systems for different types of pollution sources, including sewage chemical enterprises, thermal power plants, chemical parks and key sewage treatment plants. Generally, various sensing sensors and monitors are deployed near the pollution sources through different types of sensing networks, Upload the collected data to the provincial / municipal environmental protection monitoring center to realize the real-time online monitoring of the discharge of major pollutants.Due to the limitations of its own characteristics, such as high bandwidth occupation and low direct correlation with data, video monitoring has always been in an auxiliary or security position in the traditional pollution source monitoring projects. After the implementation, it is only used as an auxiliary means for panoramic view of the site situation, and is constructed separately from the traditional pollution data collection. In the past, the problems such as low definition of analog camera and difficult laying of transmission line make the video monitoring system separate from the whole pollution source data monitoring system, and the effective utilization rate is not high. Later, with the development of video technology, the definition was greatly improved, and the bitstream compression rate was higher and higher. The application of 3G / 4G wireless video and picture transmission technology made video monitoring have a new entry point in the field of pollution source monitoring.2、 Conventional scheme of pollution source video monitoringThe current basic framework of video monitoring of pollution sources is shown in Figure 2. The provincial environmental protection department and county and municipal environmental protection bureaus establish a two-level networking platform, and the front-end sewage enterprises are the classic security configuration of video access control alarm.The front-end video monitoring system is responsible for all-weather video monitoring of important places such as the main pollutant discharge outlet of the plant and the sampling place of the monitoring station, so as to meet the requirements of the environmental protection department for real-time monitoring of plant pollutant discharge.Basic framework of pollution source video monitoring1. Sewage outlet and monitoring stationThe factory will discharge a large amount of wastewater and waste liquid in production activities, including industrial production materials, intermediate products, by-products and pollutants generated in the production process, which are an important cause of environmental pollution, especially water pollution. The state has extremely strict standards for the discharge of industrial wastewater, but in the implementation process, there will always be some illegal enterprises trying to evade supervision by secretly discharging, so the monitoring of enterprise wastewater discharge is particularly important. (see Figure 3)System architecture of sewage outlet and monitoring stationEnvironmental protection departments generally have sewage monitoring stations in enterprises, which are responsible for detecting the wastewater discharged by enterprises, obtaining the content indicators of various pollutants, and ensuring that the industrial wastewater discharged by enterprises meets the specified standards. However, only data information is obtained in this way, which lacks an intuitive way to observe and understand the situation of wastewater, and most monitoring stations adopt the unmanned operation mode of automatic sampling and detection. In order to avoid the occurrence of illegal discharge, a set of video monitoring system needs to be deployed as the improvement and supplement of the monitoring system.Ball machines are deployed near the blowdown pipe and sampling port to ensure real-time and comprehensive observation of the whole process from sewage discharge to sampling, so as to eliminate the possibility of fraud by enterprises. The use of high-definition camera enables managers to clearly observe the color and other information of sewage through the monitoring picture, rather than relying on the detected data.Sewage monitoring stations are mostly unattended. In order to prevent the detection instruments in the station from being artificially damaged and stolen, and prevent enterprise personnel from entering and tampering with data, access control system can be deployed at the gate, and infrared double identification and infrared cameras can be deployed indoors. The monitoring station only allows people with authority to enter, and records all personnel entering and leaving, and keeps videos for future query. When someone invades, the linkage camera will automatically take video.2. Flue gas emission monitoringMost of the factory waste gas is discharged through the chimney. Generally, high-definition cameras are deployed at the height of the plant to cooperate with the PTZ, cover the chimney within the plant, and cooperate with the CEMS system for all-round flue gas emission monitoring. When CEMS detects that the pollutants exceed the standard, the management personnel can adjust the camera to the preset position to monitor the target chimney and obtain the real-time HD image of the scene, which is helpful to understand the whole picture of the event.3、 Integration of video and business systemWith the continuous development of the national video security monitoring industry, different industries such as public security, finance and environmental protection also put forward different monitoring requirements for security manufacturers. While leading the trend of high-definition and intelligent video, traditional hardware security manufacturers have based on their own products, subdivided the industry market, paid more and more attention to the environmental protection industry, explored the needs of the environmental protection industry through projects, put forward solutions for the environmental protection industry, and developed targeted industry platform software, This provides a technical basis for the integration of video surveillance and environmental protection business system. This integration is mainly realized through the following steps:1. Environmental protection business data acquisitionEnvironmental protection business data acquisition is generally realized through software docking. The Platform SDK provided by environmental protection business software and video monitoring software platform are developed to obtain relevant environmental protection monitoring system data.2. Video OSD overlayAfter the video monitoring software platform obtains the data, it uses the OSD function of DVR, IPC and other video devices to overlay the data into the corresponding video picture, so that the data can be presented more intuitively. The data is directly superimposed into the code stream for storage, and it is still the matching presentation of video and data in the later video playback3. Plan linkageAlarm thresholds of different types and levels can be set according to the content of environmental protection data monitoring. When the data exceeds the threshold, the set plan will be linked, such as the associated video pops up on the large screen of the monitoring center, central video storage, displaying location information / management information on the electronic map, SMS notification to management personnel, etc.4、 Technical requirements for video surveillance in environmental protection industryVideo technologies and concepts such as HD, intelligence, integration and linkage have been proposed and gradually matured. Video monitoring plays an increasingly important role in pollution source monitoring. At the same time, "smart environmental protection" also puts forward higher requirements for video monitoring software and hardware technology. Technology and industry demand promote each other and jointly promote the development of smart environmental protection.The requirements of smart environmental protection for video monitoring products and technologies are mainly reflected in the following aspects:1. HD technology to see further720p, 1080p and other high-definition images have been widely used in transportation and other industries with high video quality requirements. Pollution source monitoring involves the monitoring of small objects such as gas, particles and suspended solids, and there is also a demand for high-definition images.In addition to the high-definition of high pixels, you can see the high-definition laser PTZ camera several kilometers or even more kilometers away, which also has more use needs in water and air pollution monitoring.2. More transparent "fog" technology"Fog" here refers to haze, that is, the mixture of small water droplets or ice crystals suspended in the air and small solid particles. Haze will produce strong scattering and occlusion of light, blur the image and lose details. At present, there are two main types of video surveillance fog penetration technology, namely electronic fog penetration and optical fog penetration.
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