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  • vite1010
    (http://www.lz-frp.com/membrane/)
    http://www.lz-frp.com/membrane/


    Üyelik Tarihi: 27-09-2021
    Doğum Tarihi: 03-02-1985 - [Şu anda 36 yaşında]
    Şu anki Tarih: 25-10-2021 Saat: 03:30
    Durum: Çevrimdışı
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    vite1010' Forum Bilgileri
    Kayıt Tarihi: 27-09-2021
    Son Ziyareti: 28-09-2021Saat:07:18
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    vite1010 İletişim Bilgileri
    Web Sitesi: http://www.lz-frp.com/membrane/
    Google Hangouts ID: http://www.lz-frp.com/membrane/
      
    vite1010, Hakkında Kişisel Bilgiler
    Yer: http://www.lz-frp.com/membrane/
    Biyografi:
    Nanofiltration (NF) is a de novo class of [url=http://www.lz-frp.com/membrane/]membrane[/url] filtrations with unique properties ranging from ultrafiltration to reverse osmosis. Thanks to their high removal performance, NF membranes have gained increasing attention from both academia and industry for various applications, especially in water and wastewater treatment and desalination. However, the NF process still requires further improvement in terms of selectivity, separation efficiency, membrane fabrication, operation requirements, and sustainability.


    This Special Issue on “Nanofiltration Membranes: Recent Advances and Environmental Applications” of the Membranes seeks to include but is not limited to recent progress in emerging NF membranes fabrication and modification, polymeric and ceramic [url=http://www.lz-frp.com/membrane/nf-membrane/]NF membrane[/url], hybrid and composite NF membranes, organic solvent NF, positively charged NF membranes, NF module and process design, NF removal mechanisms, fouling mitigation strategies, new environmental applications of NF, and predictive modelling of NF membrane processes. Authors are invited to submit their latest original results as full papers or short communications. Furthermore, state-of-the-art and critical reviews and analysis papers are welcome.


    Advantages of GRE pipes


    Glass Reinforced Epoxy or GRE pipes are a valid alternative to carbon steel pipes especially for corrosive, aggressive and normal environments.

    GRE pipe technology is based on the Discontinuous Filament Winding process using high strength fiberglass (E-glass) and amine cured epoxy resin as basic material. Numerically controlled machines manufacture the product on a mandrel according to the cross section filament winding process. The continuous glass fibers are helically wound at predetermined angles and bonded with the epoxy resin.

    Lightweight and easy to handle and install GRE pipes have a smooth internal surface that reduces friction and enables a high pipe flow capacity. Low thermal conductivity of GRE pipes in comparison to steel (only 1% of steel values), minimizes the cost of insulation and the heat loss. Another major benefit of GRE pipes is that once installed they are virtually maintenance-free.

    [url=http://www.lz-frp.com/gre-pipe/]GRE pipe[/url] is well suited for environments where the corrosion resistance at competitive prices is required.

    GRE pipes offer a unique combination of high mechanical, thermal and chemical resistance which is obtained by the selection of high performance components and a proper design of the structure. The inner liner, which is made by a resin rich layer reinforced with C-glass or synthetic veil, guarantees the pipe water tightness, its chemical and temperature resistance. The mechanical resistant layer is composed of successive layers of pre-stressed glass roving impregnated with epoxy resin and orientated with a precise, predetermined angle selected in order to achieve the properties required. The resin and the hardener system are selected with the consideration of the combination of properties required from the finished product. The glass reinforcement in the form of continuous roving is chosen base on its compatibility with epoxy resin. It is applied on the rotating mandrel following the hoop (radial) winding pattern combined with a helical winding pattern at an angle ranging from 45?° to 90?°.

    Glass tape or unidirectional reinforcements can be used to obtain local reinforcement. An external resin coating reinforced with a synthetic veil adds a finish to the pipe. Should weathering be a problem a UV inhibitor will be added to the coating.

    GRE pipes are generally manufactured with an integral joint, which means that the socket (for bonding, lock, or thread) is produced simultaneously with the pipe body by winding on a specially designed metallic mould fixed at one end of the mandrel. The pipes are wound on precisely machined steel mandrels, the mandrel is extracted only when the pipe is cured.




    ADVANTAGES


    Wide range of diameters from 1 " (25mm) up to and including 54 " (1400 mm).


    Standard lengths of 12 m.


    Adhesive, locked bell/spigot, lamination and flanged jointing systems.


    Anti corrosion system


    Long life (50 years) + zero maintenance = low life cycle cost.


    UV Resistant - can be safely installed above-ground.


    Conductive pipe and fittings are available.


    Fast, low cost assembly due to light weight and simple jointing techniques.


    Lighter support needed for above-ground systems.


    Low Hazen williams number due to the smoother internal surface.





    GENERAL CHARACTERISTICS OF THE PIPING


    Excellent resistance to corrosion and long service life.


    Superior Flow characteristics.


    Low paraffin's and solid build-up.


    Installation cost much lower than steel.


    Installation unaffected by weather conditions.


    The pipes weight about ?? the weight of steel.


    Fast and reliable installation. API 8 RD EUE Threads and 4 TPI available.


    Operational pressures in line pipe, tubing and casing up to 3500 PSI.


    Exceptional performance against pressures and high capacity load.


    USES OF GRE


    Transport lines.


    Fire Fighting networks.


    Line for chemical disposal.


    Injections lines.


    Lines for gathering and gas transportation.


    Line for universal insolutions and water injection in mines.


    Acid transportation.


    Line for recirculation.


    Production wells, Tubing and casing.


    Line for chemical transportation.


    Water injection, tubing and casing.


    Line for disposal formation waters.


    The Early Rotor Blades


    Early helicopters like the famous Bell 47 came with main rotor blades made of wood. The inherent characteristic of wood being strong and flexible provided the perfect material for early [url=http://www.lz-frp.com/blade/rotor-blade/]rotor blade[/url] designs.


    There were problems however as wood can easily be damaged by woodpeckers, dust and stones, and even rain causing the [url=http://www.lz-frp.com/blade/]blade[/url] to swell leading to severe vibrations from an out of balance rotor system.


    As the realization of the versatility of the helicopter become more popular, the design and evolution of the airframe and the rotor blades began to move forward.


    Materials Development


    A rotor blade needs to be strong but also very flexible. You have probably seen that when a helicopter is parked the main rotor blades droop down, but in flight centrifugal force keeps them flat. Not only that, but the blades also flex in flight, especially when affected by turbulence and they need to be able to withstand these loads as well as keeping the helicopter in the air.


    To be able to withstand these stresses placed on the blades they need to be designed to be strong in certain areas, but yet flexible in others. Although wood is great at doing this they are limited to the weight they can lift and the speed at which the tips can rotate. This is where new materials were needed.


    One of the first advances into rotor blade design was the skinning of the blade’s leading edge with corrosion-resistant steel to aid in erosion control, especially towards the tips of the rotor blade where it is moving the fastest.


    The Hiller UH -12B was one of these aircraft to adopt such a design on its blades during the 1950’s.


    Metals


    As testing and development into metals really began to take stride it became inevitable that rotor blades would find themselves made of them.


    As metals solved some of the problems presented in wooden blades, they presented their own. Constant flexing of certain metals over time can cause it to break. Think of what happens to a paperclip when you twist it back and forth. The other problem with metal is that a crack can rapidly spread causing catastrophic failure – Which is not generally welcomed by pilots!


    This was one of the first reasons that rotor blades started to have a time limit on their use. Until this point, wooden blades were considered to last indefinitely!


    Honeycombs


    The addition of honeycomb technology into rotor blades really helped to improve the design and lifespan of a rotor blade. Used in conjunction with other metals, rotor blades can be produced strong, flexible, light, and cheaper than their advanced composite younger brothers.


    To ensure the long-term safe operation of the FRP membrane housing, please observe the following regulations and recommendations:


    1. The shrinkage expansion rate of the FRP membrane housing is relatively small. Please observe the rated design pressure index during use. Operate it within the allowable pressure range.Long time overpressure operaton is strictly forbidden!


    2. The service temperature of FRP membrane housing is generally from ﹣7 ℃ to 49 ℃. It is strictly forbidden to work under the condition beyond this temperature range.


    3. The back pressure of the two-end permeate water outlet shall not exceed 125 PSI.


    4. Strictly abide by the pressure level of each medium, such as clean water, sewage, seawater, etc. If you use water with special media, please contact our company in advance to avoid accidents.


    5. When the RO system is working or there is pressure in the frp [url=http://www.lz-frp.com/gre-pipe/membrane-housing/]membrane housing[/url], it is strictly prohibited to knock, disassemble or move the membrane housings. The surrounding vibration source environment must be strictly controlled.


    6. It is strictly forbiden to apply pressure or gravity to the upper part of the membrane shell, or to its corresponding accessories.

    题目:Key Cabinet and Locker Management
    内容:

    Key Cabinet and Locker Management


    PACOM Unison is a market-leading platform with the ability to link with ASSA Abloy Traka[url=http://www.keymanagementsystem.net/intelligent-key-management-system/] intelligent key management system [/url]and lockers solutions to manage and control access to a company’s most important assets. When a conventional key is stolen, mislaid, or accidentally taken home, security is compromised and the organization is suddenly vulnerable. Even if nothing is stolen, and no damage is done, the cost and inconvenience of fitting new locks and the impact on productivity can be significant.


    Traka can significantly reduce the cost of losses through accidental damage, theft, personal injury and downtime.


    The integration between Unison and ASSA Abloy Traka allows for extensive key management at facilities such as data centers, healthcare facilities, universities, municipalities, governments and other similar applications.


    The user presents an access card to a reader to open the key cabinet and access a selected key. All actions and events are logged in Unison and can be accessed at any time. Unison can be configured to activate an alarm if a key is not returned to the cabinet on time. Unison can also be programmed to activate an event once a key is borrowed or is returned late.


    Unison’s integration with Traka supports automatic upload of configuration making it efficient to upload data to user tags or update time schedules.


    Deister proxSafe Integration


    Deister proxSafe is a key and asset management system used to effectively control and monitor valuable assets using high security, electronically controlled cabinets.


    Monitoring who, when and where keys and assets are accessed adds confidence and peace of mind with control and immediate response to alerts that can be automatically raised when alarm conditions exist.


    Integrating Deister proxSafe with the PACOM Unison system allows Unison operators to respond to alarms, perform actions and monitor the status of the [url=http://www.keymanagementsystem.net/key-management-system/]key management system [/url]as part of their standard Unison security management solution.


    Linking Unison cardholder data and proxSafe key users provide the ability to control access to individual keys using existing cardholder data and the automatic sharing of data between Unison and proxSafe ensures that secure access to critical assets is maintained at all times.


    The electronically controlled key cabinets can be efficiently monitored from the convenience of the Unison client and operators can see who has accessed keys and assets at any time. More than 50 different events can be displayed as alarms in real-time, enabling Unison operators to take timely action.


    Benefits


    The aim of this article is inform you on how to implement proper key management and to answer 3 important questions regarding centralized and automated key management:


    What is Centralized Key Management?


    How can a centralized system help meet regulatory compliance?


    How can automation further improve the life cycle management of keys?


    Distributed key management systems make it very difficult to manage cryptographic keys. As your company grows, so does your data and the number of encryption keys you must manage to maintain data security.


    By switching to a centralized key management system, you will remove these challenges, increase life cycle efficiency, and help your IT departments develop proper key management policies that scale with your organization.


    First, let’s take a look at what it means to practice proper key management.


    Proper management of cryptographic keys in hardware security modules.


    Proper key management is an essential process of data security within any organization handling sensitive information. To avoid risks and efficiently scale operations, an organization should centralize its [url=http://www.keymanagementsystem.net/medium-and-large-companies-key-cabinet/]large intelligent key management system[/url]. This will result in good key generation and ensure key integrity within the system.


    How to implement proper centralized key management policies and procedures:


    Develop secure data policies within your organization


    Define the processes necessary to implement those policies


    Automate those processes for your hardware security modules with a dedicated KMS.


    What is a Centralized Key Management System?


    A centralized KMS offers more efficiency as opposed to a distributed or application-specific KMS. They are called centralized because they use a single point to secure key management, policies and access audit logs. To boot, your organization can develop uniform key management procedures across all of your departments.


    Some benefits of a centralized key management system:


    Provides tamper evident records for proof of compliance


    Streamlines key management processes and reduces costs


    Automatic key updates and distribution to any end-point


    Reduces the risk of human errors with user & admin permissions


    Dual control with asynchronous workflows


    System-wide key control manages any key type and format


    Offers High availability and scalability


    Reduces costs with automation


    Simple backup and recovery


    Another key advantage of implementing a centralized system — it eases regulatory compliance by providing a complete record of every time a sensitive operation or key activity is administered from the server.


    How can a centralized system help meet regulatory compliance?


    Regulation is a topic brought up in any serious discussion regarding data security. Anytime sensitive information storage is involved, you must follow the standard security rules required by an exhaustive list of compliance authorities. The particular regulations/security standards relevant to encryption and key management depend on the type of information that is being stored or processed and what sector the business operates within. In order to pass compliance testing and audits, you need to keep your data security procedures documented and updated. For most companies, compliance can be a major hassle.


    Here are some of the standards to consider for HSMs:




    Federal Information Processing Standard (FIPS)




    Common Criteria Evaluation Assurance Levels (CC EAL)




    Payment Card Industry - Data Security Standards (PCI DSS)




    [url=https://www.cryptomathic.com/cs/c/?cta_guid=8dc630d8-447f-4c64-85af-94e7a6fbdfc7&signature=AAH58kHJS3FXwfUltaoSEkBt-1-zpMjuWQ&pageId=6253086435&placement_guid=01d99925-f051-47eb-80c9-bbdd9c36c4fc&click=55c16376-d66e-49ac-9180-8be55959c141&hsutk=&canon=https%3A%2F%2Fwww.cryptomathic.com%2Fnews-events%2Fblog%2Fthe-benefits-of-an-automated-and-centralized-key-management-system&portal_id=531679&redirect_url=APefjpF_f3iER_kzKtig75ruomsccHqqjn24HbFVysa3GzB6xTA_IKefDOymWuN7bc6IsEVnE8QEJbDQUPpEP3EydewvK6Y0Cs3updScJjcnjBtIHtshhDLF2YXtjOMCNv2H4AItrriRKpRYCBplmdAEfset7oDi16B5ffcexdHnIP1YZ2rENKE]Lite series key management system[/url] is typically developed with certain sectors/industries in mind, and therefore it is advisable to choose a centralized KMS that has a proven track record for supporting the security/regulatory standards of the particular sector that is relevant to the business.


    A centralized KMS can help passing compliance audits by enforcing the security policies and automatic logging of all security sensitive operations. A unified overview and central control of all the essential logs makes demonstrating compliance much easier and quicker than auditing various disparate key management systems.


    Compliance is non-negotiable. It is equally important for the [url=http://www.keymanagementsystem.net/]system[/url] to support the complete life-cycle of cryptographic keys. Automating key management further reduces the need for time-consuming, manual key functions.


    A system that puts high value keys under management needs to centralize, automate and optimize the encryption key management process through the entire life cycle. Proper management reduces overhead costs, ensures generated key quality, and protects these keys in storage and in transit.


    WHAT IS A GUARD TOUR SYSTEM


    A guard tour system is a system used to help companies and organizations to organize, log and execute guard tours and patrols in their assets ensuring that the officers will accomplish their tasks within the predefined time intervals. There is a wide variety of guard tour systems, which can be divided in two major categories: Wand guard tour systems based on handheld devices and cloud guard tour systems based on modern mobile and cloud technology.


    [url=http://www.keymanagementsystem.net/guard-tour-system/]Standalone guard tour system[/url] provides a means to check and record the time that a guard executes his guard tour by scanning specific checkpoints assigned on the area he patrols. Checkpoints are placed in certain points either on buildings or on other locations of a site or remote area and help the managing staff to identify each different location and each portion of a specific territory. The on-site officers can scan checkpoints, send SOS alerts, track and record events and conduct and send reports to the managing staff or the clients, even in real-time.


    WHICH INDUSTRIES NEED A GUARD TOUR SYSTEM


    The implementation of a guard tour system will help companies to monitor their officers accurately in time and manage their assets more effectively, upgrading their security services. So, many different industries can take advantage of the use of a guard tour system:


    - Security companies, to monitor officers / Lone Workers, manage guard tours and conduct reports.


    - Educational Institutes, to increase the safety of their students


    - Real Estate organizations, to manage their buildings and protect them from damage


    - Public transportation services, to direct activities and manage daily incidents


    - Finance Institutes, to be safe from external threats


    - Warehouse departments, to assure the security status of their merchandise


    - Manufacturing facilities, to protect from damages and record incidents in every aspect of manufacture process


    - Cleaning and maintenance services, to manage their installations and workers





    7. In order to ensure the inner surface of the fiberglass membrane housing clean, [url=http://www.lz-frp.com/]manufacturer[/url] use a neutral cleaning solution to clean. It is strictly forbidden to use concentrated hydrochloric acid, concentrated sulfuric acid, etc. as cleaning fluid.


    The above is all the content that the editor introduces to everyone, we need to maintain and clean the FRP membrane housings regularly during use.




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