显示标签为“low pressure sprayer”的博文。显示所有博文
显示标签为“low pressure sprayer”的博文。显示所有博文

2013年11月4日星期一

Flower reasonable choice and use of herbicides

1 according to the size of Ages medication a biennial woody flowers , whether planting seedlings or cuttings , seedlings are present its tender branches shallow roots , root underdevelopment, poor tolerability , hence should be used when spraying low doses . Commonly used herbicide oxyfluorfen , prometryn and so on. Generally applied before the flower bud marinated pharmaceutical toxic soil , can prevent slips, dicotyledonous weeds, valid for one month , does not affect seedling growth .

(2) According to the degree of precious flowers medication is generally expensive flowers on the environmental conditions and management requirements are relatively high , from a safety point of view , the choice of foliar treatment , such as using the " feeder " and other herbicides formulated as 0.3 to 0.4% concentration liquid, with smearing weed control , avoid using aerosol low pressure sprayer spray drift leading pharmacy has caused injury to seedlings . There is also available indigenous pesticide poisoning .

3 According to the growth characteristics of medication smiling flowers , camellia , magnolia and other flowers as leathery leaves , waxy layer on the leaves , and some conifers with fragrant flowers and leaves of butter, these flowers and strong resistance , it can be directly using the " feeder " and other systemic herbicide to do foliar treatment . Some flowers and leaf quality thin , wax less , such as Tau , France holly, Indus , etc. , and some flower leaves are fluff, such as hibiscus, Mama rust ball etc. These flowers are not appropriate to " feeder " direct spray , garden hand sprayers optional efficient " Gallant " on the stems and leaves do targeted treatment , both to control grassy weeds , but also to ensure the safety of seedlings .

4 Classification according to medication woody flower flowers resistant to herbicides generally stronger than the herb flowers . Flowers on the grass suitably selective herbicides , such as " Gallant ", " grass g ," " Take fishing net ", in doing shoots with flowers growing season . On coniferous woody species such as cypress , larch, cedar , etc., can also use the " feeder " doing foliar treatment . For some broadleaf woody species such as ash , acacia, Bauhinia, hibiscus and other species more sensitive to insecticides , can do oxyfluorfen soil treatment, wash with water after application required seedlings, nursery stock to ensure safety .

2013年10月31日星期四

Note the use of pesticides

Bt is a bacterial insecticide , Bacillus thuringiensis class belonging , a variant of a good effect on the prevention and treatment of Lepidoptera larvae in use should pay attention to the following questions:

1 First, pay attention to the quality of Bt , general requirements per milliliter ( or 1 g ) containing more than 10 billion spores , applied concentration is 500 to 700 times , if the product is to increase the concentration of low bacterial content . When you open the bottle test if there is odor indicates may have expired.

(2) application of Bt Never with fungicides such as carbendazim, thiophanate other mix. Fungicide flower sprayer spray should be sprayed clean or fungicides will kill some Bt bacteria , thus affecting the insecticidal effect .

3 applied to the attention of the weather , the best on cloudy or weak illumination medication, if intense sunlight , ultraviolet light will kill bacteria Bt . Sunny days spraying, usually in the morning or afternoon before 10 , preferably in the foggy morning spraying. Temperatures generally in the 10 ~ 35 ℃ is appropriate, if food intake is too low will affect insect control effect is poor.

4 When the insect population density , in order to eradicate pests as soon as possible , add a small amount of pyrethroid pesticides such as speed kill small , Xing Bao cotton , kung fu , etc. , usually in the liquid sprayer can add 1 to 2 ml .

2013年10月28日星期一

Be careful of these leafy pests

Do not arbitrarily increase the drug concentration, the number of days between spraying should strictly enforce the general chemical control disease, every 6-7 days, spray agents, pest 10-15 days, spray; note spraying quality, all parts should be sprayed, not be missed, particularly the lower leaves. Requires positive and negative spraying, spray on the leaves but also negative, must not be careless, or ineffective; using 2,4-D dip dip flower anther to pay special attention, concentration can not be large, it can not be repeated dip flowers, or fruit teratogenic, if not careful 2,4-D sprayed on the leaves, even small concentrations, there will be injury, Ye Zicheng chicken feet shape.

To comply with pesticide safety interval because there are residues of pesticides, drugs can not fight today, tomorrow harvest vegetable market, so in the vegetable harvest spraying pesticide safety interval must pay attention to the different requirements of pesticide safety interval is not the same. For example Kui parathion pesticide safety interval is 14 days; zineb, mancozeb, carbendazim interval is 15 days; dimethoate, trichlorfon, metalaxyl (metalaxyl), triadimefon, one hundred bacterial clearance,pressure sprayers g mites PL pesticide interval of 7 days; phoxim, dichlorvos, speed kill small, thiophanate and other pesticides interval 5 days; Fosetyl pesticide interval of three days.

More choice of Protected Vegetable Pesticide smoke or dust protected because humidity, but with smoke, dusts pesticides to control pests without adding water, will not increase the humidity, the effect is good; cloudy, rainy as usual control, the effect is not affected. The spraying liquid is different, must choose sunny, otherwise the effect is not good. And the use of smoke or dust Pesticide labor, residues are generally not exceeded, the application of the protective benefits of a lot of vegetables.

Watched the sky, spraying liquid medication seedlings generally choose sunny, no wind (or wind very, very small) weather. perfume sprayer High temperature, the concentration should be appropriately reduced in order to avoid injury (in particular the protection of vegetables). Some pesticides (such as some organic phosphorus) used when the temperature is high efficacy increased. Miao hour, spraying fluid volume should be reduced, but not high concentrations, because tender seedlings easy to produce injury. Some vegetables sensitive to certain drugs, such as the 50% drop of aldicarb pesticide use on cucumber, 300 times with injury, 500 times without injury, but 500 times in cabbage using it to produce injury. Therefore, the concentration necessary to reduce the use of cabbage, requiring 800 times more.

Handheld selection of ultra low volume sprayer

To select a suitable spray method

For ultra-low-volume spraying requires the use of oil pesticide spraying diluted liquid or only several times,knapsack power sprayer spraying 0.3 liters less per acre, the droplet diameter of 60 microns to 90 microns. Low-volume spraying, the use of pesticide emulsions, and diluted with water several times first times, mu spraying liquid from 0.3 to 30 liters, the droplet diameter of 100 micrometers to 150 micrometers.

Select the appropriate wind speed, wind direction and air temperature

Usually in 2-3 spray when the wind is better. Operator should try walking direction perpendicular to the wind direction, and to the nozzle in the wind, so that the operator of pesticide droplets drifting away.

Master nozzle height

Oil pesticide use ultra low volume spray nozzle from the crop height is generally 0.8 to 1.2 m; choice for low-volume spray pesticide emulsion when the nozzle from the crop height of about 0.5 meters.

Select pesticides and pesticide use

To improve the effectiveness of pest control should be selected within the absorption dose pesticides and stomach poison pesticides and two pesticides used in combination. Pesticide use, with a low volume spraying,foam sprayer the amount of pesticide per acre generally administered 2000 ml can get better control effect.

2013年10月27日星期日

Mowing lawns is to pay attention to these

Just be trimmed lawn grass , if weeds have been a lot of pruning , you need to wait until the weeds grow enough leaf area before garden pressure sprayers spraying , or due to weed leaf area is too small, difficult to demonstrate the herbicidal effect .

Try not closed herbicides in the sand , sandy loam, no barren soil nutrient use . After sowing herbicide use , there are four conditions : seed casing ; very moist soil ; water consumption ; spray down the line .

Turfgrass injury occurred after the remedy. Principles: early to save , the sooner the better, and apply only to the suction -type herbicides. Within four days after the drug timely spraying Brassinolide ( GA , sodium nitrophenolate ) + a small amount of potassium dihydrogen phosphate + urea + speed rooting amount, repeat spraying interval of 4 days or so , basically able to completely detoxify. Regulator and fertilizer hand sprayer spraying over the main role is to provide increased seedling plant growth promoting safety.

2013年10月24日星期四

Goods pesticide sampling

Sampling methods are: a wide range of pesticides and formulations , very different physical state , except when sampling should follow the general sampling rules , we must also take into account the different states of the products of sampling methods :
( 1 ) solid product sampled. back pack sprayers The number of samples depends on the goods batch weight or number of pieces . Each batch at 200 or less , according to the 5% to take ; 200 or more may be 3% to take . Mined number of 5 to 10 is appropriate. Large containers should be upper, middle and lower parts taken . Can be slotted spoon sampler or sampling . Each sample not less than 100 grams. The samples were taken repeatedly shrink quartering points, and finally take the 100 to 150 grams sealed storage equipment seized .
( 2 ) a liquid sample collection . Sampling should try to make the product mix , and then remove the sampler capacity required . Each batch of products mined 3 to 5 , each sample of not less than 500 ml , mix the samples taken , and finally take a sample of not less than 200 ml , sealed storage equipment seized .
( 3 ) special form of product sampling . Should be based on the specific circumstances , the use of appropriate sampling methods . An aerosol can be taken from each batch of a few bottles of any inspection . Goods taken from a batch of pesticide samples, only on behalf of the batch . Therefore, samples taken shall be marked with : product name, manufacturer, date of manufacture , batch number, date and place of sampling . In the supply and demand sides of pesticide product quality demanded arbitration dispute analysis , or when authorized by the State Administration of Quality Supervision agencies pesticide product quality supervision and spot checks , garden water sprayer the sample shall be parties to the dispute or sampling with sampling mutual proceed. Sample letters signed by both parties , in duplicate , one to send inspection institutions , retained to prepare a reinspection .

2013年10月9日星期三

Sprayer Common Faults and exclusion method

Many types of spray nozzles , here rocker and worm sprinkler common faults and troubleshooting .

1 Water tongue abnormal traits Rotating sprinklers if working properly, in the absence of otherness ( rocker style guide or worm water heaters · impeller ) blocked, the water in the vicinity of the nozzle tongue should have a smooth , transparent, round dense paragraph after paragraph in dense water tongue gradually turned white and was crushed ; its range of not less than 85% of the standard value , and should be good atomization . Otherwise, water tongue trait abnormalities. Its causes and remedies as follows: ① water tongue just left the nozzle on the rough surface of an opaque , but the water is still the mainstream of the tongue is circular, because sprinklers processing rough, burrs or damage. Sprinklers should be polished or replace the nozzle . ② water leaves the nozzle on the tongue just a spread , no round dense paragraphs. The main reason is inside the nozzle was badly damaged and should be replaced ; rectifier distortion , should be repaired or replaced ; flow channel within the blockage should remove foreign bodies .

2 range is not enough water tongue

① range is not enough , but the water is still good atomization tongue , mainly due to the nozzle speed is too fast , you should adjust small nozzle speed . ② range is not enough and the water jet atomization poor. The reason is not enough pressure , may be required to increase the pressure .

3 sprinkler rotation is not normal

① rocker works fine, but the head does not turn or rotate very slowly. The following reasons: a hollow shaft and the sleeve shaft gap is too small , should increase its gap ; between being blocked into the sediment should be removed cleaned ; installation sleeve shaft screw too tight, should be relaxed . ② arm angle is too small. Reasons: rocker spring too tight, should be appropriately loosen ; rocker mounted too high , water flowing water can not completely cut tongue , should be lowered ; rocker arms and rocker arm shaft with tight , should increase the gap ; pressure low and should be increased . ③ rocker angle is large enough, but the percussion weakness. The reason is water deflector tongue cut too deep , so that the power has not been fully tap rocker hand pump sprayers sprayed body incurs in red open . Tapping block should thicken . ④ rocker percussion frequency instability , unsteadiness . The reason is the rocker arm and shaft rocker shaft with Songkuang or loose , you need to identify the reasons corrected. ⑤ not return after arm throw . Mainly due to the rocker arm spring is too loose , you should tighten the springs.

4 worm type ( impeller ) nozzle rotation is not normal

① impeller idling but the head does not turn . Main reasons: the impeller shaft and the small worm screw loose coupling between or pins off, should be tightened ; big worm shaft and sleeve positioned between the screw loose , should be tightened ; reversing gear did not catch , should be pulling the lever to make commutation gear to catch . ② water tongue is normal but the impeller does not turn, fruit tree sprayers the body does not turn . Main reasons: worm or gear oil, resistance is too large , you should add oil ; positioning screws too tightly , resulting in a large worm with eccentric , should be appropriately loosen ; impeller is stuck foreign body , should be cleared ; worm , gear or hollow shaft and shaft sleeve rust prison, should rust refueling.

5 leaking nozzle rotating parts

① gasket into the sediment, so that the sealing surface is not sealed , remove the hollow shaft clean. ② insufficient precision nozzle , the hollow shaft and the sleeve shaft is not closely with the end surface , should be repaired or replaced.

2013年10月7日星期一

Flowers conduct biological safety

Biological control is to reduce drug use, avoid flowers produce a measure of resistance .

One can make use of pest disease, lethal bacteria, fungi , viruses or their metabolites to control pests . Usually cultured microbial virulence of the pest , and then made ​​into powder spraying , so that pests death. Such as bacteria Bacillus thuringiensis preparations against lepidopteran insect larvae highly toxic , killing excellent results. Experimental results show that the effect is also very good fungal pest . Such as the use bassiana parasites in the Lepidoptera, Coleoptera and other insects and worm class body , can be very effective in killing pests. Poplar lice red seat molds for whitefly has a high virulence . The use of research and application of pest control virus also made ​​great progress in the application of more nuclear polyhedrosis virus . Strong expertise insect virus resistance , garden pressure sprayer virulence is also strong, lasting effect. Practical applications often made ​​of the virus preparations agent, platinum , wettable powder , etc. applied into the soil or spraying pest control .

Second, the use of microbial antagonism between and certain microbial metabolic products , to inhibit the growth of pathogenic microorganisms flowers , development, and even to death. Such material is antibiotics. If code is " 5406 " flower flower fertilizer can prevent certain fungal diseases , bacterial diseases and mosaic virus .

Third is to use the nature of the food chain , food chain relationships or parasitic relationship to combat pests. For example, the use of daylight bee control aphid ; bottle sprayer utilization dragonflies, praying mantis and other predatory insects and so on.

But also the use of plant immunity and Vegetable saps the active ingredients to combat pests and diseases. As with aqueous garlic can prevent many types of bacteria. Physiologically active substances to the use of plant pest is currently the focus of research at home and abroad , is one of the ways a good prospect . In addition the use of biological pest control engineering approach is also a new trend of development, such as genetically modified technology.

2013年9月21日星期六

Rational use of pesticides also need to do this

Safety interval : the last application to harvest the number of days . If the vegetables used must wait to achieve the required number of days of pesticide products can be broken down .

Note : The main characteristics of the agent , hand sprayer a reminder that during storage , transport and use should pay attention to. At the same time , attention should be proper handling of pesticide packaging .

Scientific use of pesticides application aids. Already contains a certain pesticide formulations surface active agents , but the control objects, with different stages , processing different quality , different choice of water , in order to improve the wetting liquid spreader spray performance and increase efficacy , often need to add some application aids.

Scientific evaluation of the control effect . Insecticide and acaricide efficacy of performance at different times can be divided into two types of fast-acting and holding effect , in particular, garden water sprayer an insect growth regulator type , the efficacy of play slow ; fungicides against the principle can be divided according to Prevention within the suction treatment and protection are two, for the purpose of protecting agent is prevention , after the onset of therapeutic agents can be targeted therapies ; herbicide efficacy of different treatment time divided by pre-emergence and leaf handle both . For this reason, in the evaluation of efficacy should be based on their characteristics , choose a different evaluation . These need to be done

2013年8月23日星期五

Ultra low volume sprayer after use guidelines

After each use, to the tank, the residual liquid infusion tube release, the whole machine wipe clean; chemical sprayer spray after the operation, in custody prior to collection, in addition to the tank, the liquid inside a clean residual oil poured outside , but also a comprehensive cleaning, metal parts to rust oil painting, and then kept in the shade.

Faults and troubleshooting ① reduce the amount of spray or not to home garden sprayer spray. Repair, if found to be incorrect throttle valve spool position can be a good re-spool position; infusion switch if they are blocked, the infusion should be cleaned switch; throttle orifice if they are clogged, clean the throttle valve Kong; the case of the liquid-axis head clogging infusion should be cleaned shaft hole; if they are not pressurized tank or leak, refillable pressurized connector with the notch toward the fan; the case of tank lid is not tightened should be re-tighten the tank lid. ② obviously thick fog particles or transfer cage speed is low. If found to be gasoline engine speed is not enough, you should adjust or repair gasoline; cage bearing the case of oil, and add lubricant bearings should be cleaned; if they are bearing wear, should be replaced with new bearings; tumble if they are clogged or broken nylon nets should be cleaned or replaced grille.

Flowers, leaves, cleaning and maintenance

Potted plants, especially large leaf foliage plants, they are placed in the process is always easy to absorb dust, dirt can clog the one hand, the pores on the leaves, so that plants can not absorb moisture from the air and oxygen or excess body evaporation of moisture to the outside world; On the other hand, the dust will make potted plants look depressed, even after the water is soiled, it is very unsightly. Therefore, not only for the routine maintenance of potted plants pest illnesses should also be timely removal, so as to allow the natural green space to show its elegant style, clean indoor air also benefit.

1, the cleaning blade of the time

The time for the morning cleaning blade, the blade in the night before the arrival of sufficient drying time, so as to avoid the lack of sunlight and temperature drops at night, the leaves produce a time in a humid environment.

2, the cleaning blade is

Spray method using water agricultural sprayers spray impact will wash away the dust on the leaves.

Swab dipped in water with a sponge or cloth repeatedly leaves gently wipe the dust sludge.

Method using a soft brush to brush the dust on the brush clean blades

Note: The first two methods are not suitable cactus, mostly meat and leaves of plants with fluff. Once the blade is difficult to evaporate water wet after that use a dry cloth to absorb moisture and can not guarantee that a certain period of time to dry. And some fear of water, such as gerbera flower buds foliage buds, Clivia foliage pseudobulbs are not wet, especially in the germination and bud stage, water will affect the development of flowers.

Also do not hand sprayer spray water directly on the flowers. Water perishable flowers, withered, it will result in poor fertilization, affecting flowering. Pomegranate, crabapple, crape myrtle and other potted fuchsias and water will cause the blade leggy branches, the latter two recommended cleaning method.

2013年8月8日星期四

Pesticide use technology to improve

Increased use of technology, performance play herbicide weed herbicide has its own characteristics, we must increase the use of technology to maximize the effectiveness of the herbicide weeding, weeding in order to achieve good results, and to reduce or avoid injury from occurring. To correctly handle the following relationships.

1, application and climate relationships. When the weather is dry or when the wind is spraying, will increase the amount of liquid evaporation and drift, weeds, leaves, soil surface adhesion of the liquid is reduced, resulting in decreased herbicidal effects should be avoided in the dry and windy weather conditions The following spraying.

2, application and temperature. Many herbicides increased activity in high temperature conditions, at low temperatures decreased activity, slow down dead grass, generally greater than the daily average temperature 8-10 ℃ degrees conducive efficacy of play. However, some herbicides in the day when the average temperature is about 5 ℃ spraying, you can still get a good herbicidal effect.

Such as fenoxaprop, alkynyl oxalic acid, tribenuron, azole grass ketone. In the days before winter the average temperature is about 5 ℃ (no freezing at night as well) to use, even after the winter to get a good herbicidal effect.

It should be noted with isoproturon head warm in cold tail spraying, cold spraying should be stopped 2-3 days before, or can produce cold injury.

3, the relationship between pesticide and humidity. Whether soil or foliar treatment enclosed needs to have suitable soil moisture, drought conditions are not conducive to the efficacy of the play, you should avoid spraying too dry conditions.

4, pesticide and water relations. How much water when spraying is related to the amount of liquid adhesion and uniformity of spraying, thus affecting the herbicidal effect. Asked not to re-spray herbicide, does not leak spray, repeat some easy to produce injury, where leakage garden hand sprayers weeds die. According to practical experience, as a soil closed when weeding, mu liquid volume of 45-60 kg as well (hand portable sprayers 3-4 buckets of water), foliar treatment agent to 30-45 kg (2-3 buckets of water) as well .

5, application and preparation Quality. Crushing smooth soil surface is conducive to the formation of liquid membrane closure, weeding effect. Uneven soil surface, and large clods of soil surface is not conducive to closed, and because of freezing and thawing in winter, a large clods broken, resulting in increased spring the grass, reducing the herbicidal effect.

2013年7月30日星期二

Matters described using silicon carbide

Because use of silicon carbide, high temperature, high temperature, anti-oxidation, corrosion resistance, heat up fast, long life, high temperature deformation, easy installation and maintenance features. Good chemical stability. If the power supply system with automated matching can get an accurate constant temperature, but also according to the actual needs of the production process according to curve the thermostat. Now widely used in national defense, machinery, metallurgy, lightweight, ceramics, semiconductors, laboratory analysis, scientific research and other areas, for a variety of electric kiln furnace electric heating element. To test each silicon carbide heating element is good work, power clamp meter tests available individually measured current. In the same area a voltage equal to the current requirements under similar deviation does not exceed 10%, if the individual current is too small to explain the resistance. If the current is too small, not too much resistance is poor contact pin press. If there is no current may be silicon carbide heating element has been broken, should further examine the replacement. Crack easily when wet silicon carbide, GD rod contacts easily broken after damp damage, therefore, silicon carbide in the store, the installation process should pay attention to moisture, so as not to affect their life. In order to ensure uniformity of furnace temperature and rods bear the load before installation to be with the group, each silicon carbide resistance deviation does not exceed 10%. Silicon carbide hard and brittle,agricultural sprayer in the handling, unpacking and installation, maintenance when things do not care to avoid damage. Power to run an electric furnace at the beginning, to gradually slow step, can not be a plus full load, otherwise they will be the impact of current is too large, resulting in damage to silicon carbide.

By adjusting the addition of silicon carbide components electrical load, reducing the surface load density. If a smaller load and low surface load density, kiln temperature is high, you can maintain a fairly long life, either by changing the silicon carbide component installation count, or change the component specifications to regulate heat size of the surface to achieve. Surface load density and inversely proportional to temperature furnace, the furnace temperature is higher, the smaller the permissible surface load density; overload will cause decomposition of silicon carbide heating element overheated surfaces off, burning. To ensure the component life,portable sprayers should allow the heating element in the overload condition, the general control its value 6 ~ 8W/cm2. Non-silicon carbide overload. If for some reason stick breaks or discover uneven bars fever, localized phenomenon was incandescent or dark a period of time, indicating that aging is inconsistent rods, a section of resistance that much difference, should be shutdown for maintenance rods, replace all the best bars . Such as replacement of some of the new rod or rods when the new single from the new and used rod rod resistor resistor matching inappropriate, leading to unbalanced load, temperature uniformity. Therefore, due to large differences in resistance level rod temperature difference is large, will seriously affect the life.

2013年7月28日星期日

Plastic applications in electrical communication electronics

Aerospace Industrial Applications
Special features of the plastic in the aviation and aerospace industry has been widely used, garden sprayers but it has increasingly shown in this field irreplaceable, and even some metals are far behind they are being replaced.
Electrical Industrial Applications
Plastics in the electrical field of application is extremely broad, and its role has two main aspects, one as an electrical insulating material, two mechanical structural materials. These materials are applied electrical field, mainly electrical, electronics industry and the wire and cable industry.
Electrical insulating materials to make the device electrically insulated, with a certain mechanical strength material generally has the resistivity of 106 ~ 1019Ω.cm. They are in the function of electrical technology are as follows:
1 part of the conductive body and insulated from each other;hand sprayers  2 conductors of different potentials to 3 separate storage capacitor may be provided to improve the high electric field conditions 4 in a potential gradient.
With the electrical technology to the high pressure, high temperature, large capacity, small volume development of the insulating material is also a higher performance requirements.

2013年7月24日星期三

The use of degradable plastics


The use of degradable plastics has two main areas: First, the original use ordinary plastic field. In these areas,agricultural sprayer  the use of post-consumer plastics or difficult to collect back damage to the environment, such as agricultural film and disposable plastic packaging, plastic instead of other materials is based on two areas. Use of biodegradable plastics in these areas can bring convenience, such as golf courses with the ball screw, rainforest reforestation seedlings with fixing material. Specific application areas are as follows:
1 Agriculture and Forestry, mulch, water retention materials, nursery pot, seedbed, rope, pesticides and agricultural fertilizer release material.
2. Packaging, shopping bags, garbage bags, compost bags, disposable lunch boxes, instant noodle bowls, cushion packaging materials
3 groceries, disposable tableware (knives, forks, chopsticks) toys, disposable gloves, disposable table linen.
4. Sporting Goods,household sprayer  Golf Courses ball screw and ball seat
5. Hygiene products, feminine hygiene products, baby diapers, medical mattress, disposable shavers.
6. Pharmaceutical timber, bandages, clamps, swab with a small stick, gloves, drug delivery materials, as well as surgical sutures and fracture fixation materials.