Quick Links

Related Posts

Glossary of environmental science
For instance, plants biosphere grow in the ground geosphere , but to survive they absorb water hydrosphere and carbon dioxide atmosphere. Title 29, CFR The realization that we have been wearing analytical blinders is becoming widespread. Specifications Specifications General specifications The specification values listed below are subject to change without notice. See the rating label on the machine for the correct voltage V , frequency hertz and type of current A for your machine.

Thank you!

Strategies to Prevent Ventilator-Associated Pneumonia in Acute Care Hospitals: 2014 Update

With a base area only slightly larger than an A4 sheet, the RC is incredibly small and yet very powerful. Smart and great value too, it has been designed primarily for slave network operation. Compact, powerful and as flexible as you need to meet your demands, the new RCA controller is a universal prodigy, just as capable as a stand-alone or part of an integrated system. If it's extended to create a multi-manipulator controller, the RCA can control several robots and various peripherals in a complex system.

The RCA controller can be expanded with a variety of image processing systems to meet your requirements. The RCA can communicate with all conventional field bus systems and is open for the connection of lower and higher level controllers, sensors, actors, conveyor belts and other peripherals. This means that the RCA can take over all robot control, motion control and process control functions, without the need for a PLC.

Synchronisation takes place using markers and without additional wiring being required. The RCA can process 48 multi-tasks. Of these, 16 tasks can be run as background tasks - even if the robot program is interrupted.

This multi-tasking ability means that even complex processes can be controlled easily within the work cell. Using the integrated Ethernet port the RCA can be connected to other Epson robot systems or company networks at no extra cost, enabling you to access the controller from your desk.

The RCA's compact dimensions enable it to be fitted in a control cabinet. It can be installed in various positions - horizontal or vertical, on the floor, on the ceiling or on the wall. All the ports are located on one side to make it easier for you to connect the controller quickly whilst also ensuring easy access for maintenance and repair work.

The number of assemblies has been minimised, which increases reliability. All components can be replaced without the need for special tools. The trigger key enables you to save a complete backup including system status to a USB stick at any time whilst the system is running.

This allows simple offline error analysis. The RC90 is one of the the most compact and lightweight controllers of its performance class on the market. Small, smart and very good value, it was primarily designed for slave network operation. Also, expansion cards for communication with external devices and integration into fieldbus networks can flexibly expand your system according to your requirements, at a very low cost.

This is in addition to a 3D graphic environment that lets you simulate your robot program almost completely, and clearly visualise robot movement. Our project management and development environment runs under the latest versions of Windows and communicates with the RC controller via USB and Ethernet.

Its open structure also includes an option for integration into external programming environments. Syntax colouring, debugger, input assistance and a freely definable interface help you with development tasks. It's always good when complex projects are simple to implement. Includes all robot-relevant information and control elements, clearly organised in separate windows for configuration, point processing, fly-by point parameters, tool and robot coordinate systems, payloads and inertia.

Via the robot control desk, motors can be switched on and off, and resets or even home runs can be executed. It's also possible to create special user displays. The software is capable of controlling all types of robots and functions. It also supports a graphic 3D environment which enables you to simulate the robot program almost completely, and visualise robot movement. Includes all robot-relevant information and control elements, clearly organised in separate windows: Via the robot control desk, motors can be switched on and off and resets or even home runs can be executed.

Plan and visualise all the procedures in your production, validate your program offline and carry out troubleshooting and editing work easily from your desk. The RC simulator which is included in the software package enables you to save time and money during every phase. Simulator Video File size: During the design phase, you can plan your robot cell accurately and quickly, and easily and reliably estimate the cycle time for your application.

This allows you to prove feasibility before a single part of the installation is manufactured. You can also prepare for later expansions in the simulation to minimise shutdowns within the live installation. Prior to robot delivery, an offline program validation will be carried out. Programs can be created in parallel and even complex motion sequences can be visualised and evaluated. This helps to detect collision risks and avoid damage to the equipment.

Troubleshooting and program modifications can be comfortably carried out from the desktop Collision detection, reachability checks and robot motion can all be visualised in 3D. Its range of commands enables you to program a very wide range of robot motions — from a simple pick and place applications to complex multi-manipulator line control.

This is carried out faster than by using an interpreter, and the syntax can also be checked before the program is run. The extensive range of comments for various applications means short programming times with far fewer errors.

In addition to program structure commands, you can use sub-program techniques, multi-tasking and interrupt commands to write programs which are easy to read, enhance and expand. Our powerful integrated image-processing systems detect and position parts reliably in spite of production deviations, part-exchanging or varying lighting conditions. Through simple commands and an intuitive interface with graphic objects, tasks that require flexible automation are solved with simple parameterisation.

Epson Vision Guide 5. Thanks to a common programming environment, no time is wasted connecting robot and vision system. Easy commands and an intuitive interface with graphic objects allow completing flexible automation tasks by means of simple parameterisation.

This powerful image-processing system reliably detects and positions parts despite variations in production or changing parts, in combination with an Epson compact vision control unit and cameras.

With the geometric object software tool, objects can be detected faster and more reliably than with a traditional pattern or edge detection system.

Commands are easily selected from a clearly structured library that processes the position of the robot. Therefore the complicated, tedious and error-prone linking of several command sequences becomes superfluous. Create vision sequences with just a few mouse clicks. Epson Vision Guide 7. This compact system is particularly suitable for users who do not always rely on a computer for image processing. For requirements such as short cycle times and an extremely high camera resolution more than 1.

This solution is suitable for users who require very short cycle times and extremely high camera resolution more than 1. Thanks to our proprietary piezoelectric quartz sensing technology, Epson's force sensors are durable and sensitive, allowing them to accurately and consistently sense minimal amounts of force in six directions.

This lets users automate complex manufacturing tasks and improve productivity. Sensors are supplied with robot operation commands, to make implementation quick and easy. The S series enables robots to sense force as low as 0. The sensors can also be used on tasks that formerly relied on human sensory perception such as polishing and deburring, freeing employees from repetitive manual work.

Our hardware and software components provide the enhanced functionality and configuration flexibility you need for full-process automation. Our standard automation products cover the majority of possible uses, but if you have unique requirements, that's no problem. We have a range of additional hardware and software options for Epson manipulators and control systems. These components will allow you to implement a bespoke production design, efficiently and flexibly.

Allows power and signal cables to be routed through a hole in the mounting plate directly below the manipulator lead out, so that cables are not exposed in the robot cell recommended for clean room applications, for example.

Two-piece bellow set for mounting on the z-axis. Protects the spindle or the nearby environment from grime and dirt. Allows the user to install wiring within the robot arm, for a cleaner exterior. The cables run under the cover of the second arm and directly into the hollow z-axis from there, eliminating any external cabling.

Standard 3m cables or optional 5m and 10m cables for greater freedom in controller and robot placement. A wide variety of controller options can be employed to further expand the range of process tasks you can automate. Epson sees image processing, conveyor tracking and robots as a logical functional unit, without interface problems, yet with maximum flexibility. Conveyor belt movement is constantly measured via an encoder. Even if the speed between the detection and handling of an object changes, the robot can grip or put it down accurately.

We provide you with several belt tracking possibilities via camera or sensor tracking a light barrier, for example. If the standard 24 inputs and 16 outputs are not enough, yet you do not wish to set up a fieldbus network, your system can be expanded by further 32 inputs and 32 outputs per card for RC and further 24 inputs and 16 outputs for RCA.

Up to four expansion cards in total may be used. Is your unit already using a fieldbus system or would you like to reduce the amount of wiring for future connections? In this case, the following slave cards are available for the RC The panel is also designed for operation and visualisation tasks within complex systems. The control panel shows five function-specific monitors for comfortably switching back and forth. The freely editable user dialogues can be easily produced via the Epson programming language.

The PG board mainly serves to monitor conveyor speed for conveyor or sensor tracking via an encoder. Combined with additional software, it can also be used to control non-Epson kinematics. Stepper as well as servo motors are supported. A few devices still offer a serial interface as the only communication method. You can use up to four of those interfaces via the serial expansion card. The portable control and display unit fulfils all observation, operation and parameterisation tasks for SCARA and six-axis robots.

The control is designed ergonomically both for right-handers and left-handers, and offers fatigue-proof handling. The portable control and display unit fulfills all observation, operation and parameterization tasks for SCARA and 6-axis robots. The control is designed ergonomically both for right-handers and left-handers and enables fatigue-proof handling.

Thanks to fast processors, it is perfectly suited for demanding visualization and operating applications. Epson's long experience in factory automation enables us to offer a wide array of easy-to-use software programs to help you achieve maximum productivity with minimum programming overhead. We at Epson view image processing, conveyor tracking and robots as a logical functional unit, without interface problems, yet with maximum flexibility.

The conveyor belt movement is constantly measured via an encoder. We provide you with several belt tracking possibilities: In combination with corresponding further software options it can also be used to control kinematics not consisting of Epson components.

Manual actions during component placement and assembly can be both inefficient and error-prone. It's also a fact that the movements of the human arm are restricted by nature.

Thanks to the optimal relationship between axis 1 and axis 2, Epson robots enjoy maximum mobility and can assemble the smallest components accurately every time. At the same time, they are sturdy, durable and work very reliably in all conditions.

Quality controls, trial runs before serial production, data measurements are all areas where precise recording is vital. The presence of the parasite not only castrates the host but it also feminizes a male host during subsequent molts both in morphology and behaviour. Once the parasite has established itself internally, a hollow, mushroomlike reproductive body develops and perforates the ventral cuticle of the host between the thorax and the abdomen.

There it enlarges to fill the space where the crab normally broods its eggs, and there the crab cares for the parasite as if it were its own eggs.

If a rhizocephalon cyprid destined to be a male finds the freshly erupted female, it attaches near the brood chamber and undergoes a similar metamorphosis into a minute cell mass surrounded by a thin cuticle.

It discards the cuticle as it enters the receptacle and differentiates into a mass of spermatozoa. Fertilization occurs when the eggs are laid, and the developing larvae are retained in the cavity until hatching. Larval dispersal depends upon the time spent and the behaviour of the various stages, as well as on favourable currents while in the plankton, prior to cyprid settlement.

Larvae do not remain in the plankton for more than a few weeks, and larval dispersal is generally limited to less than 1, kilometres miles. Species, however, are found on oceanic islands isolated by much greater distances, in part because some benthic barnacles occasionally attach to larger animals such as fish and whales as well as to floating objects such as wood, kelp, and pumice.

Still other barnacle species develop a symbiotic relationship with an organism, such as a whale, turtle, sea snake , or jellyfish ectocommensal , and their distributions tend to approximate those of their hosts.

In some instances, however, the distribution of the barnacle is only a small portion of that enjoyed by its host, indicating that other factors limit its range. In the open ocean the larvae of the pedunculate barnacle Lepas seek out objects generally large enough to support the weight of the numerous adults e. There is one species, however, that selects small objects e. After metamorphosis the cement glands of this species secrete a multichambered gas-filled float of its own.

Floating objects attract other planktonic organisms, such as copepods and small fish, on which the barnacles feed. It has been said that a barnacle is a shrimplike crustacean that attaches by the top of its head and then kicks food into its mouth with its feet. This likely tongue-in-cheek definition actually distinguishes barnacles from their allies and gives a fair idea of how the animal operates.

Furthermore, a sedentary way of life requires protection from many biological and physical situations that can readily be avoided by their motile, free-living counterparts. A thin, chitinous cuticle covers the appendage-bearing portion of the body, including the cirri, mouthparts, and lining of the mantle cavity. This portion of the exoskeleton is molted periodically, the process being controlled by hormones.

The tissues and organs of barnacles are bathed by blood, which contains dissolved hemoglobin in some species. In contrast to that of most crustaceans, however, the blood circulates in a generally closed system.

Blood pressure extends and distends the stalk in pedunculate barnacles; the relatively long cirri, which are curled while at rest; the trunk of the body that supports the cirri; and the probosciform penis. The principle pair of plates covering over the mantle opening is provided with a transverse adductor muscle and discrete retractor muscles. The nervous system, ladderlike in some primitive pedunculate barnacles, is condensed in scalpellomorphans and sessile barnacles into a single mass.

The second antennae are present in nauplii but lost in cyprids. The first antennae are used by the cyprid in settling, but become buried in the permanent cement following attachment. The lateral, compound eyes of the cyprid are shed with metamorphosis. The nauplius median eye is generally retained in the adult as a photoreceptor. In sessile barnacles the bilateral parts of the median eye separate and migrate laterally to thin places under the anterior pair of opercular plates, where they function better in the shadow reflex.

This reflex results in the rapid withdrawal of the cirri, which are otherwise vulnerable to predation, especially by fish. Food gathered by the posterior cirri is collected and passed to the mouthparts by anterior cirri modified to act as maxillipeds.

As it is pushed under an upper lip and into the mouth, the food is masticated by the two pairs of spiny maxillae and then by toothed mandibles. Salivary glands generally empty on the second maxillae and provide secretions that stick the food particles together and transport them to the mouth.

As in most crustaceans, a short foregut leads to a spacious midgut, or stomach, usually provided with a pair of digestive pouches, or ceca. The midgut is followed by a relatively long hindgut that passes the length of the trunk to the anus located between the last pair of cirri. Maxillary glands are well-developed in adults, where they open just behind the base of the second pair of maxillae. Barnacles are also able to sequester heavy metals and brominated compounds as nodules in the wall of the midgut.

As noted above, the circulatory system is a modification of the relatively simple, open system seen in crustaceans. In barnacles, pumping has largely been assumed by the somatic musculature, and in mature and advanced forms a nearly closed system of walled vessels has developed.

Gas exchange can take place across any of the thin cuticular surfaces of the body, and many small barnacles lack discrete respiratory organs.

The cirri form excellent respiratory structures when the animals are feeding, and water can be circulated in and out of the mantle cavity by pumping movements of the body when the cirri are withdrawn and the aperture to the exterior is not completely closed. Some pedunculate barnacles have straplike organs, called filamentary appendages, extending from the body wall.

On the other hand, most sessile barnacles have a pair of broad, often wrinkled extensions of the mantle wall, called branchiae. These and filamentary appendages are considered respiratory organs. Ovaries are located in the stalk of pedunculate barnacles and its homologue or in the basal lining of the mantle cavity in sessile barnacles.

Paired oviducts pass posteriorly to the bases of the first cirri the most anterior position for genital openings in any crustacean , where each is joined by an oviductal gland before emptying into the mantle cavity. The oviductal gland secretes a tacky elastic substance that mixes with eggs as they are laid and holds them in one or two discrete masses called ovigerous lamellae. Testes are situated in the trunk.

Paired sperm ducts pass posteriorly below and to the sides of the gut before each expands into a seminal vesicle. An ejaculatory duct enters the base of the probosciform penis, situated between the last pair of legs, and runs its length.

The penis may be clothed with fine setae, randomly distributed or arranged in discrete rows, or modified into simple or complex spines and hooks. The nondistensible penis of ascothoracidans is a less-extensive modification of the seventh pair of trunk limbs seen in more primitive crustaceans. It is used to inject spermatozoa into special chitinous seminal receptacles in the bases of the trunk limbs of the female, where they are stored until the eggs are laid.

The probosciform penis of acrothoracicans and ordinary barnacles injects the spermatozoa into the mantle cavity of the female, or a hermaphrodite acting as a female, at the time the eggs are being laid. Although sites of neurosecretory and glandular hormone production have not been identified in barnacles, molting and metamorphosis are controlled by hormones. Two insect molting hormones have been identified in barnacles. The Cirripedia belong to the Maxillopoda , an ancient radiation of relatively small, primarily marine crustaceans e.

Many maxillopods are wholly parasitic. Of the six nonparasitic subclasses the Orstenocarida and Skaracarida are extinct Cambrian , and the Mystacocarida are generally restricted to a narrow band of the marine interstitial environment. On the other hand, of the primarily nonparasitic groups, the Ostracoda and Cirripedia, ranging from the Cambrian Period, and the Copepoda are diverse and occupy a wide variety of aquatic habitats.

Of the nonparasitic groups, only the mystacocarids and cirripedes are exclusively marine. Because of marked similarities in their nauplius and cyprid larval forms, it has generally been considered that the Cirripedia gave rise to the highly modified parasitic Rhizocephala. This view has been appealing because two parasitic pedunculate barnacles draw nutrients from their hosts by a root system, which, if not homologous with that of the Rhizocephala, at least indicates how the rhizocephalans could have evolved from a parasitic barnacle.

The mode of host penetration by a stylet near the area of the cyprid mouth and the composition of the injected material, however, suggest that the Rhizocephala evolved from a biting rather than a filter-feeding ancestor and therefore more likely represent a sister group than a derivative of the Cirripedia.

Although the parasitic Ascothoracida is placed by some authorities within the Cirripedia because of a similar body plan, they have a nonprobosciform median penis and seminal receptacles, as well as trunk limbs used solely for swimming, that show no indication of ever having been involved in filter feeding. Furthermore, their nauplius larvae lack frontolateral horns, and their cypridlike larvae often more than one stage not only are capable of feeding with biting mouthparts but also possess distinctive prehensile first antennae that lack cement glands.

Slain a b Steven L. Shein a b Alexandre T. Open Access funded by Sociedade Brasileira de Pediatria. Under a Creative Commons license. Abstract Objectives To summarize the current literature describing high-flow nasal cannula use in children, the components and mechanisms of action of a high-flow nasal cannula system, the appropriate clinical applications, and its role in the pediatric emergency department.

Data summary High-flow nasal cannula, a non-invasive respiratory support modality, provides heated and fully humidified gas mixtures to patients via a nasal cannula interface. Conclusions High-flow nasal cannula should be considered for pediatric emergency department patients with respiratory distress not requiring immediate endotracheal intubation; prospective, pediatric emergency department-specific trials are needed to better determine responsive patient populations, ideal high-flow nasal cannula settings, and comparative efficacy vs.

Keywords High-flow nasal cannula. Palavras-chave Cânula nasal de alto fluxo.

Contact Us