Espa

Fran

日本語

Email

Depth Filter PP Pleated cartridge filters PolyPure®Classic PolyPure®AB High Flow cartridge filters 600 FlowPure®-HF Melt Blown Filters MicroPure®Classic String Wound Filters AqurePure Classic KleenPure®Swimming and Spa Filter Membrane Filter PTFE membrane cartridge filter FluorPure® FluorPure®-EV AFS-Pure® PFA PES membrane cartridge filter SteriPure®-B KynarPure®-L KynarPure®-D Capsule Filters PES Capsule Filters PTFE Capsule Filters PP Capsule Filters Nylon Capsule Filters Capsule Filters OEM Other Filter Activated carbon Filters Carbon Impregnated Cellulose Extruded Activated Carbon Granular Activated Carbon Sintering Activated Carbon Liquid Filter Bag Melt Blown Filter Bag NMO Mesh filter bag Needled Felt Filter Bag Other Mesh filter bags Filter Housing Clear & White PP Housing Standard Blue Housing Stainless Steel Housing Bag Filter Vessel High Flow Filter Housing

UF purification system

UF System for General Water Treatment UF System for Waste Water Treatment PVDF Hollow Fiber UF Integrated Equipment

Ultrapure Water System

Robinson Ultrapure Water System Robinson UPW System For Ship Robinson UPW System For Drinking

Waste Water Treatment

Oil Gas (on shore) Oil Gas (off shore) Desalination Pharmarceutical & Biology Food and Beverage Waste Water Treatment

System&OEM

Membrane Filtration Package System

UF Package System UF+RO Package System Ultrapure Water RO System for Pharmaceutical Ultrapure Water RO System for Microelectronics Hollow Fiber MBR System Flat Sheet MBR System

Click to show more

MSLD-UPW MSLD-UPW-UF MSLD-UPW-UV MSLD-UPW-VF

Syringe Filter Nylon PTFE PTFE Venting Filters PVDF MCE CA GF Sterile Reusable G-MP

Disc Membrane Filter OEM SimplePak Blotting PES MCE Nylon PVDF PTFE PP CA Nylon Mesh PC RC QC

Vacuum Filter Disposable SteriBell Glass Solvent Multi Vacuum Filter Vacuum Pump

Microbiology Test Bioset MCE Gridded Absorbent Pad Petri Dishes

Special Paper Glass Fiber Quartz Fiber Quantitative Qualititative PH Paper

Sample Preparation

Sample Vials Vials Caps and Septa

SPE column Silica-based Polymer-based Adsorption based Mix

Bottles and Tubes Centrifuge Microcentrifuge Serum & Sample

Others Plastic Cuvette Quartz Cuvette Syringeless Filter Devices Spin Column

Blotting Membrane

Nitrocellulose Membrane NC Transfer Membrane PVDF Transfer Membrane Nylon Highly Positively Charged Membrane Filtration Tube Ultrafiltration Tube

Molecular Biology and Microbiology

PCR Tube Micro-centrifuge Tube Freeze Tube ELISA Plate Multi Well Luminescnece PCR

Culture Plates Cell Culture Dish Cell Culture Flask Co-Culture Plate Culture Tube Roller Bottle Inoculating Loops Serological Plate

Liquid Handling

Serological Pipettes Aspirating Pipettes Pipette tips Pipette Pasteur

Lab Filtration Filtration & Purification Sample Preparation

Life Science Filtration & Purification Molecular Biology & Microbiology Cell/Tissue Culture Liquid Handling

Food & Beverages Bottled Water Wine Filtration Milk & Dairy Juice Drinking Water

Fuels & Chemicals Chemical Producers Refineries

Oil & Gas Injection Water Produced Water Treatment Sulphate Removal Mobile Water Treatment Petrochemical Waste Water Treatment

Graphic Arts Ink Jet Filtration Ink, Paints & Coatings

Bio-Pharmaceuticals Active Pharmaceutial Ingredients Biotechnology Clarification & Prefiltration Sterization Filtration & Bioburden Control Venting & Gas Filtration

Microelectronics Data Storage Photovoltaics Semiconductor Filtration & Purification

Water Treatment Sea Water Desalination Municipal Water Treatment Waste Water Treatment Power Generation Ultrapure Water

Residential Water

Microfiltration Membrane

PTFE MF Membrane PTFE Hydrophobic Membrane PTFE Film For Lamination PTFE/PP Hydrophobic PTFE/PET Hydrophobic PTFE Hydrophilic Membrane PTFE Hydrophilic Pure Membrane PTFE/PP Hydrophilic PTFE Oleophobic Membrane PTFE Membrane for Textile PTFE Distillation Membrane PTFE Membrane for Air Monitoring PTFE Filtration PTFE Filtration for Gas and Air PTFE Filtration for Microelectronics PTFE Filtration for Pharmaceutical PTFE Filtration for All Fluoropolymer PTFE Filtration for Chemical PTFE Venting PTFE Venting for Medical Transducer Protector Ostomy and Urine bags IV inline Filter Set Package Vents PTFE Venting for Automobile Headlight Tanks Micro Motor Sensors PTFE venting for packaging Agricultural Household Industrial PTFE Venting for Electrical Sensors Humidity Sensor Pressure Sensor Temperature Sensor Gas Sensor

PVDF Membrane Hydrophilic PVDF Membrane Hydrophobic PVDF Membrane Clarification and Particulate Removal Sterile Filtration Venting/Gas Filtration Venous Indwelling Needle PVDF Transfer Membrane

Nylon Membrane Positively Charged Nylon Membrane

PES Membrane Clarification and Particulate Removal PES Membrane for HPLC PES Membrane for Sterile Filtration PES Membrane for Drip Chamber PES Membrane for Liquid Filtration PP Membrane

Ultrafiltration Membranes PVDF Hollow Fiber UF Membrane PES Hollow Fiber UF Membrane

Ultrafiltration Modules Residential UF Elements Flat Head UF Filter Flat Pressure UF Filter Korea Type UF Filter Screw Type UF Filer Plug-in Household UF Filter Industrial UF Module PVDF Pressurized UF Module PES Pressurized UF Module Spiral Wound UF Module UF Cartridge Filter

UF Systems UF System for General Water Treatment UF System for Waste Water Treatment Ultrafiltration Skids

RO Membrane RO Element Residential Reverse Osmosis Membrane BW RO Element LP Industrial RO Element SW RO Element

MBR Membranes Reinforced PVDF Hollow Fiber Membrane PTFE Flat Sheet membrane PVDF Flat Sheet membrane

MBR Modules Submerged PVDF Hollow Fiber MBR Module Submerged PTFE Flat Sheet MBR Module Submerged PVDF Flat Sheet MBR Module

MBR Systems PVDF Hollow Fiber MBR System PTFE Flat Sheet MBR System PVDF Flat Sheet MBR System

PureAssure MS Residential Drinking Water Products

RO Membrane & Filter

UF Membrane & Filter Flat Head UF Filter Flat Pressure UF Filter Korea Type UF Filter Screw Type UF Filer UF Water Pitcher Plug-in Household UF Filter

Water Pitcher & Water Purifier

RO purification system MS® Kitchen RO Drinking System MS® Box-Type RO Drinking System MS® Smart RO Purifier System MS® 400G Energy-Saving RO Drinking System MS® Commercial RO Purifier System

UF purification system MS® Kitchen UF Drinking System MS® Grand UF Purifier System MS® Central UF Water Purifier

Replacement filters & Filter Housing

Water Filters RPS T33 FILTER RPS DisposableFilter RPS Double Levels Filter RPS Extruded Carbon Filter RPS Resident RO Housing RPS Self-locking Filter RPS Granular Carbon Filter RPS Sintering Carbon Filter RPS Filter Housing

Other Residential Filters and Accessaries

Water Filters Shower Filter Faucet Water Filter Whole House Water Kitchen Water Filter

Lab Filtration

Disc Membrane Filter

PES Syringe Filter

MCE Syringe Filter

Nylon Syringe Filter

PVDF Syringe Filter

PTFE Syringe Filter

PP Syringe Filter

CA Syringe Filter

Glass Solvent Filters

Multiple Vacuum Filtration Systems

Microbiology Test

Absorbent Cellulose Pads

Lab Instrument

Industry Liquid Filtration

Visit our company blog now

Scientists find universal rules for food-web stability

The findings, published in this week's issue of Science, conclude that food-web stability is enhanced when many diverse predator-prey links connect high and intermediate trophic levels. The computations also reveal that small ecosystems follow other rules than large ecosystems: differences in the strength of predator-prey links increase the stability of small webs, but destabilize larger webs.
Natural ecosystems consist of interwoven food chains, in which individual animal or plant species function as predator or prey. Potential food webs not only differ by their species composition, but also vary in their stability. Observable food webs are stable food webs, with the relationships between their species remaining constant over relatively long periods of time.
Understanding complex systems such as food webs present major challenges to science. They can either be examined by observing natural environments, or by computer simulations. To enable computer simulations of such systems, scientists often have to make simplifying assumptions, keeping the number of model parameters as low as possible. Yet, the computational demands of such simulations are high and their relevance is often limited.Cartridge Filters
Innovative methodology—Scientists from the Max Planck Institute for the Physics of Complex Systems (MPIPKS) in Dresden, Germany, have developed a new method that allows them to efficiently analyze the impact of innumerable parameters on complex systems.
"By using a method called generalized modeling, we examine whether a given food web can, in principle, be stable, i.e., whether its species can coexist in the long term," says Thilo Gross from MPIPKS. Complex ecosystems can thus be simulated and analyzed under almost any conditions. "In this way we can estimate which parameters will keep ecosystems stable and which will upset their balance."

Home | News & Support | Order FAQ | Contact Us | Site Map | All About Membrane Blog

USA	China	Japan
Toll Free: 1-866-528-4572 Fax: 1-732-412-4040	Toll Free: 400-820-0293 Fax: 86-21-51687551	Toll Free: 81-047-710-7392 Fax: 81-3-6740-1115