Feeding Device Research Articles

Airway and feeding problems in infants with Fairbairn-Robin triad deformities.

The majority of patients with Pierre Robin sequence in the subdivision Fairbairn- Robin triad (FRT), are born with glossoptosis, retro-/micrognathia and cleft or agenesis of the palate leading to feeding difficulties and airway obstruction. There is limited literature on these problems, and on methods used to address them. Community nurses in the Facial Cleft Deformity Clinic evaluate associated airway obstruction and feeding problems and devise nursing interactions to address these. This retrospective study examined the incidence of airway and feeding difficulties in the neonatal, pre-surgical period, as well as the surgical and nutritional management of these infants. Retrospective records of 215 infants with FRT were examined and data on incidence, airway and feeding difficulties and surgical and nutritional management was collected. Descriptive statistics, including average and percentage values, were compiled. The incidence of FRT amongst the cleft palate patients was 6.0%, with 37.7% of these having feeding difficulties. However, surgical interventions such as glossopexy (5.6%), distraction osteogenesis (0.9%) and tracheotomy (2.3%) for airway management were seldom required. Most of the infants who had upper airway obstruction and feeding problems were handled by means of suction and drinking plates, along with additional specific feeding aids. This reduced airway obstruction in 70.6%, and feeding problems in 62.4% of these infants. Based on this study’s finding the introduction of the suction and drinking plate and the use of specific types of feeding devices and surgical management can improve growth and development in infants with FRT.

Modeling and Simulation about the Web Running of the Web-Fed Printing Press System Based on Rigid Coupling

The stability and performance of the web running is one of the key factors of printing quality. Through the analysis of the mechanical structure of web running, movement rules and dynamic characteristics of the tape established the physical simulation model. A physical simuliation platform of the web-fed system was built based on technical load testing about feeding device, the feed rollers and tension control, a guidance for optimizing the structure, designing of high-performance presses on the basis of the experiment and web running was provided.

Control of Magnetic Suspension Linear Feed System

A magnetic suspension linear feed device has been introduced in this paper, it is consist of linear motion and suspension parts. The mathematical model of suspension system is modeled. Aiming at the suspension part which is an nonlinear and strong coupling system, the auto-disturbance rejection controller (ADRC) is used. The inner disturbance and outside disturbance is observed and compensated, the result of simulation indicates the suspension control A magnetic suspension linear feed device has been introduced in this paper, it is consist of linear motion and suspension parts. The mathematical model of suspension system is modeled. Aiming at the suspension part which is an nonlinear and strong coupling system, the auto-disturbance rejection controller (ADRC) is used. The inner disturbance and outside disturbance is observed and compensated, the result of simulation indicates the suspension control has better dynamic, static and robust characters by using the auto-disturbance rejection controller.

Analysis on Dynamic Characteristics of Paper Feeding Device

Variable head sizes of paper roll will influence the stability of paper feeding device and hence the printing quality. Therefore, it is necessary to improve the printing quality by improving the stability of paper feeding device based on dynamic analysis on the phenomenon of variable head sizes of paper roll. It is found through dynamic analysis that the effect of variable head sizes on the support force of bearings is nearly five times that of the case when such effect does not exist. Vibration performance analysis of paper feeding device using finite element analysis obtains the natural frequencies of the first 6 orders for paper carriage and their dominant vibrational modes. This provides theoretical basis for the improvement of paper feeding device.

Study on Combination of Three and Four Edge-Sealing Based on Reconfigurable and Module for Vertical Bag Packaging Machine

It can be combined in a single device for three and four edge-sealing of vertical bag packaging machine. This article studies how to combine them based on reconfigurable and module. The article focuses on the former, feeding device and so on that need to be solved in the combination. The article also studies modular division and standard interface of the modules.

Condog project: Integrated temperament assessment to construct a tool for early prediction of behavioral problems

s e11 tracking, stalking, chasing and manipulating prey. For domestic animals and pets, foraging or predation last mere minutes. Rapid feeding induces gastric hyper-acidity and a low ratio saliva/gastric secretion which can lead to physiological disorders. We tested a feeding device, the Pipolino , designed to increase the feeding time and effort of cats, dogs and horses. When food is delivered through a Pipolino , in more than 80% of cases, dogs and cats expressed a larger variety of behaviors prior to obtaining and processing food and they spend more time feeding than in control situations. Increasing the feeding time enhanced the proportion of saliva in the bolus, counterbalancing the deleterious effects of possible hyper-acidity. Eating slowly and spending more time in feeding activities likely results in improvement of well-being of dogs and cats.

A Study on the Automatic Feeding Device for Optical Fibre Adapter Base

Optical fibre connnector is the most typical optical passive device in optical fibre communication industry with its various categories and structures. Optical fibre adapter is indispensable component when optical fibre connectors connect to each other. The base is the key element of optical fibre adapter. But its feeding in the factory is completely done by hand. This way is of great labour intensity and low production efficiency, so it can not meet the production need. This paper aims to design a compound automatic feeding device for the optical fibre adapter base. The device includes five modules: vibration screening mechanism, jacking-up mechanism, opening-closing mechanism, combiner mechanism, linear vibratory conveying mechanism, is to complete the automatic feeding. The control system is based on MCS51 singlechip computer technology. Through the research, it can be a good solution to the automatic feeding of the opical fibre adapter base.

Characterization of an Australia hematite oxygen carrier in chemical looping combustion with coal

Chemical looping combustion (CLC) is a promising technology to capture CO2 at low cost with solid fuels. This paper presents a continuous operation chemical looping process with a natural Australia hematite. To fulfill this, the prototype of a 1kWth interconnected beds was employed equipping with a stable coal feeding device. In this prototype, a spouted fluidized bed was used as a fuel reactor and a fast fluidized bed as an air reactor. The oxygen from air was transferred to the fuel by the solid hematite that circulated between the interconnected fluidized bed reactors. Experimental results indicated that the Australia hematite showed a stable reactivity and resistant to agglomeration and to attrition ability. At a fuel reactor temperature 950°C, a little CH4 was measured and there were neither hydrocarbons heavier than CH4 nor tars in the exit of the fuel reactor. The carbon conversion efficiency was about 81.2%, and the loss rate of this hematite oxygen carrier due to attrition is about 0.0625%/h. XRD results showed that the active phase Fe2O3 of the hematite oxygen carrier was mostly reduced to Fe3O4 phase by coal gasification products in the fuel reactor, and only small part of oxygen carrier is further reduced to FeO. No tendency of decreased reactivity of the hematite oxygen carrier was observed during 10h of operation. This hematite has a good behavior as an oxygen carrier, suitable for use in CLC with coal. Further, with regards to improve the carbon conversion efficiency, a few of Ni-based particles were mechanically mixed with the hematite particles to improve the coal gasification rate. The effect of Ni-based particles addition on the gas conversion and char conversion were evaluated. Also, the possible catalytic mechanism was discussed.

Pemasangan feeding plate dan ikatan ekstra oral pada bayi celah bibir dan langit-langit bilateral komplit disertai premaksila protrusif The utilization of feeding plate with extra oral strapping in infant with complete bilateral cleft lip and palate with protrusive premaxilla

Cleft lip and palate abnormalities in infant are the most common birth defect. This abnormality caused by failure of thefusing at the middle side of the facial frame on the week 4 to 10 of pregnancy. This abnormalities may occur togetheror separately. The coordination of the lip, tongue, palate and jaws become inadequate so there is changes in the abilityto suck, to swallow, weak muscle function and oral structure function so that the infant maybe unable to suck properly.Feeding plate use to overcome disproblem, so that the infant can have good nutrition. In infant with complete bilateralcleft lip and palate with protrusive premaxilla the utilization of this feeding device with the strapping extra oral rubberelastic orthodontic and hypapix is sure. In this paper will be discuss the utilization of device with the addition elasticorthodontic rubber in patient with complete bilateral cleft lip and palate. This feeding intervention is quiet effective, thesucking reflects of the infant become stronger and the premaxilla profile becomes more retruded that makes thesurgeon get an optimal surgical result easier.

Experimental acquisition, development, and transmission of Leishmania tropica by Phlebotomus duboscqi

We report experimental infection and transmission of Leishmania tropica (Wright), by the blood-feeding sand fly Phlebotomus duboscqi (Neveu-Lemaire). Groups of laboratory-reared female sand flies that fed “naturally” on L. tropica-infected hamsters, or artificially, via membrane feeding device, on a suspension of L. tropica amastigotes, were dissected at progressive time points post-feeding. Acquisition, retention and development of L. tropica through procyclic, nectomonad, and leptomonad stages to the infective metacyclic promastigote stage, and anterior progression of the parasites from abdominal midgut bloodmeal to the thoracic midgut were demonstrated in both groups. Membrane feeding on the concentrated amastigote suspension led to metacyclic promastigote infections in 60% of sand flies, whereas only 3% of P. duboscqi that fed naturally on an infected hamster developed metacyclics. Sand flies from both groups re-fed on naïve hamsters, but despite infections in 25–50% of membrane-fed and 2–3.5% of naturally fed flies, no skin lesions developed in the hamsters. After four months of observation these animals were euthanized and necropsied. Screening of the organs and tissue by polymerase chain reaction (PCR) that targeted the small subunit RNA gene, amplified generic Leishmania DNA from liver, spleen, bone marrow, and blood, but only from hamsters bitten by membrane-infected P. duboscqi. These results are notable in demonstrating the ability of P. duboscqi, originating from Kenya, to acquire, retain, develop, and transmit a Turkish strain of L. tropica originally isolated from a human case of cutaneous leishmaniasis. This marks the first demonstration of complete development and transmission of L. tropica by a member of the Phlebotomus subgenus of sand flies.

Endoscopic solutions to challenging enteral feeding problems

Enteral nutrition support is often required in patients who are unable to meet their own nutritional requirements. Endoscopists play a key role in the placement of enteral feeding catheters. This review focuses on the recently published solutions to common problems encountered during endoscopic placement of enteral feeding devices. Case reports and case series describe solutions for overcoming common problems encountered during the placement of enteral feeding devices. Transnasal techniques can simplify nasojejunal tube placement, whereas deep enteroscopy techniques provide more reliable jejunostomy placement. Endoscopic ultrasound can help when transillumination is not possible or in the setting of postsurgical anatomy like Roux-en-Y. Laparoscopic-assisted procedures are useful when endoscopic techniques have failed in adults or in select high-risk pediatric patients. The American Society for Gastrointestinal Endoscopy and the American Gastroenterology Association both published comprehensive guidelines that outline the indications, contraindications, technical aspects of feeding catheter placement, and complications. Advances in endoscopic techniques, including deep enteroscopy, endoscopic ultrasound, ultra-slim transnasal endoscopes and laparoscopic-assisted procedures, have enabled endoscopists to successfully place enteral feeding tubes in patients who previously required open procedures.

The Research on a New Feeding Device of Low-Temperature Deposition for Fabricating Tissue Engineering Scaffolds

Low-temperature deposition manufacturing (LDM) has been proven as an effective bone scaffold preparation process, but its further application has been seriously hindered by the existing material over-accumulation problem. In view of the over-accumulation problem of the traditional pneumatic extrusion material feeding way, designed and developed a feeding system based on pneumatic-extrusion and valve-control, which can achieve rapid pressure/relief, Combined with the inflation / deflation time calculation method of fixed volume container for analysis and calculation. A unified data management method of the material feeding device and a regulation scheme of the controller are given. Experimental results show that, by adjusting parameters, the feeding system based on pneumatic-extrusion and valve-control can achieve rapid gas pressure/relief, the flux has been well controlled, the over-accumulation on deposition path at the end has been eliminated, which lead to effective guarantee of scaffold forming quality.

Study on Low-Temperature Deposition Manufacturing Process Parameters of Three-Dimensional Chitosan Scaffold

From the perspective of forming bone scaffold, the technologic parameters of LDM which have important influence on the shape of the deposition material are studied. Through building experimental platform and using chitosan solution as experimental material, the influence of the temperature and the layer height on the lap of every fiber layer are firstly discussed in detail. Besides, the effects of nozzle diameter, the velocity of receiving device, the pressure of feeding device are also discussed. Then the above mentioned process parameters are all optimized, which make the forming mechanism of LDM to be clear. Finally, based on the optimal parameters, the scaffold with self-designed pore size and a high degree of pore interconnectivity, which meeting the requirements of the structure of tissue engineering are fabricated.

Grey correlation analysis of factors influencing maldistribution in feeding device of copper flash smelting

An experimental model of maldistribution was established and grey correlation analysis method was employed to describe quantitatively the maldistribution phenomenon in the feeding device of copper flash smelting. Particle motion in the feeding device was separated into uniform flow in chute and restricted slanting parabolic motion in distributor channel. Factors affecting particle velocity at the chute outlet and particle moving distance in the distributor channel, which also cause the maldistribution, were analyzed based on the assumption of pseudo fluid. Experiments were conducted to study the maldistribution using river sand. The results indicate obvious mass maldistribution and an even higher degree with the increase of feeding mass rate; meanwhile, size maldistribution is negligible. Also, feeding intensity has a larger impact on circumferential maldistribution than on radial maldistribution. Based on the experimental results of the eight factors impacting the maldistribution, grey relation of each factor was calculated using grey correlation analysis. The importances of these factors were sequenced. The results show that a proper adjustment of the structure will ameliorate the maldistribution phenomenon in the feeding device of copper flash smelting.

Design of an Automatic Feeding Device for Melting Tin-Ingot

The paper covers an automatic feeding device for melting tin-ingot, which has advantages of improving working conditions, high automation, stable operation, good reliability, and thus has more applied value.

IDENTIFICATION OF OPTIMUM COMBINATION OF PROPORTION OF VERMICOMPOST IN THE SOIL-BASED POTTING MIX AND POT VOLUME FOR THE PRODUCTION OF PAPER POT SEEDLINGS OF VEGETABLES

An investigation was conducted to identify the best combination of proportion of vermicompost in soil-based potting mix and pot volume for the production of paper pot seedlings suitable for mechanical transplanting. The best combination of the potting mix and pot volume is the one that produces seedlings with high growth of root and shoot biomasses at the end of seedling stage, low in cost and light in weight. Cubical shaped paper pots of 50 cm3 volume filled with potting mix of 25% vermicompost and 75% soil and sand in equal proportion by volume was found to be best for the large scale production of paper pot seedlings of tomato, eggplant, and chili peppers. The paper pots were found to be firm at the end of seedling stage and variations in their dimensions could be accommodated in fully automatic transplanters with horizontal chain conveyor type seedling feeding and metering devices.

The Three-Dimensional Design for Device of Feeding Paper on the Small Offset Press Based on Pro/E

This article does three-dimensional design for feeding device of octavo and color small offset press based on the pro/E software. It analyses the role of each part separately, requirements, and the working principle. And it does the design for the main transmission mechanism. The three-dimensional design of the device provides reference and basis for production and manufacturing of the printing press.

The Optimal Design of Vertical Hammer Mill Based on Pro/E

Vertical hammer mill is widely used in food and feed processing factory. It contains the rotor, sieve plate, machine body, feeding device, discharge device, diver device and etc. Traditional design method used two-dimensional drawings to express three-dimensional information of parts, which was abstract and difficult to be modified. This research utilized 3D software Pro/E to carry out three-dimensional designing, modeling, virtual assemble and motion simulation, and used structural mechanics analysis module Pro/Mechanical to carry out finite element analysis of key parts to optimize design of vertical hammer mill. In the designing process designer can easily modify the parameters, and directly observe the shape, location and movement of parts, which can greatly improve the design efficiency and level.

Effect of spandex filament draw ratio on elastic core spun yarn properties in friction spinning

The aim of the present study is to produce elastic core/cotton spun yarns in a friction spinning (Dref-II) system and then to investigate the effect of spandex filament draw ratio on the physical and mechanical properties of produced yarns. First, a positive feed device was designed and developed to adjust the spandex draw ratio and then mounted on the friction spinning machine. To maintain a constant yarn count at various draw ratios, the proportion of cotton sheath fibers should be increased. The yarns with larger proportions of cotton fibers showed lower twist. The elastic core spun yarns have lower hairiness in comparison with 100% cotton yarns in the present experiments. The theoretical and experimental results indicate that the tenacity of elastic core spun yarn increases as the spandex draw ratio increases. While the elongation of the elastic core spun yarns is the same as 100% cotton yarn at low spandex draw ratios of less than 3.75, when the spandex draw ratios exceed 3.75, the elongation of the elastic core spun yarn increases sharply.

Learned olfactory cues affect pollen-foraging preferences in honeybees, Apis mellifera

Honeybees, Apis mellifera, show learned odour preferences for flowers that provide nectar as a reward. However, little is known about such behavioural plasticity when bees exploit pollen sources. Furthermore, the question about whether nectar and pollen foragers use the same learned strategy to improve foraging efficiency remains untested. Here, we demonstrate that honeybee foragers are able to learn odour cues associated with pollen as a reward. This was tested in free-flying bees in a dual-choice feeding device after the bees had gathered pollen from a scented feeder. Free-flying bees that associated odour with pollen successfully recalled these memories in olfactometer odour choice tests in a Y-maze, but they failed to show extension of the proboscis to learned odour cues when restrained (proboscis extension reflex, PER, assay). In addition, odour cues associated with pollen at the feeding site induced foraging reactivation when bees were blown into the hive. In PER assays, after fatty acids were applied to the bees’ antennae, pollen foragers were more responsive than nectar foragers. This, in turn, allowed pollen foragers in the PER assay to associate an odour cue with pollen in some trials. On the other hand, the unconditioned response (UR) and the odour-conditioned response (CR) to sucrose and amino acids were similar for both types of foragers. Pollen foragers also showed more URs to fresh pollen of different flower species and even performed better during conditioning with some pollen types as the reward than did nectar foragers. By studying biases in pollen-foraging responses after learning, we provide new insights to help comprehend and characterize the search for food between pollen and nonpollen honeybee foragers.