Disposable Piercing Guide - WPTC15
Laparoscopic instruments are medical devices used in minimally invasive procedures. These instruments are designed to be inserted through small incisions in the body, allowing surgeons to operate with less pain, scarring, and recovery time than traditional open surgery.
Advantages of Laparoscopic Instruments:
1. Smaller incisions: Laparoscopic instruments allow the use of smaller incisions, reducing scarring, pain and recovery time.
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2. Improved visualization: Laparoscopic instruments provide a better view of the surgical site, allowing for more precise and accurate surgical procedures.
3. Reduced risk of infection: Compared with traditional open surgery, laparoscopic surgery usually has a lower risk of infection.
4. Reduced blood loss: Laparoscopic instruments are designed to minimize tissue trauma, thereby reducing blood loss during surgery.
5. Faster recovery: Compared with traditional open surgery, laparoscopic surgery usually has a faster recovery time, allowing patients to return to normal activities sooner.
Improve fertilization method to produce non-pollution vegetable heart
In recent years, people's concept of green consumption is maturing, and there is a trend of diversification, gentrification, and freshness. With the strengthening of people's health awareness and environmental awareness, consumption of healthy organic food has become a new fashion. The quality requirements for vegetables have been greatly improved, changing from the previous quantification to the quality. To this end, we carried out this experiment and improved the nitrate content of Chinese cabbage and improve the quality by improving the fertilization method. First, materials and methods 1, test materials: The test materials for the cultivation of the special Qingxing heart No. 4. 2. Test method: The test is conducted in the test site of the Institute and 8 treatments are set up. Treatment (1): Mushi active organic fertilizer (hereinafter referred to as Kangbao fertilizer) 70 kg. The base fertilizer was 11.25 kilograms, the first fertilizer (1-2 leaf stage) was applied at 3.75 kg, the second top dressing (3-4 leaf stage) was applied at 15 kg, and the third (6-7 leaf stage) was applied at 18.75 kg. The fourth top-dressing (9-10 leaf stage) applied 26.2 5 kg. Treatment (2): Mushi active organic Kangbao 37.5 kg, compound fertilizer 25 kg. The base fertilizer Shikangbao 5.6 kg, compound fertilizer 3.75 kg. For the first time, 1.87 kg of fertilizer was applied to Shikangbao, 1.25 kg of compound fertilizer, the second application of fertilizer was 7.5 kg of Shikangbao fertilizer, 5 kg of compound fertilizer, the third application of fertilizer was 9.38 kg of Shikangbao fertilizer, 6.25 kg of compound fertilizer, and the fourth application of fertilizer was 13.3. Kilograms, compound fertilizer 8.75 kilograms. Treatment (3): 50 kg of Mushi compound fertilizer. One 7.5 kilograms of basal fertilizer, the first topdressing application 2.5 kilograms, the second topdressing application 10 kilograms, the third top dressing applied 12.5 kilograms, the fourth top dressing applied 17.5 kilograms. Treatment (4): Mushi urea 8 kg, compound fertilizer 25 kg. The first application of fertilizer was 1.5 kg of urea, the second application of fertilizer was 3 kg of urea, the third application of fertilizer was 3.5 kg of urea, compound fertilizer was 10 kg, and the fourth application of fertilizer was 15 kg of compound fertilizer. Treatment (5): 50 kg of Mushi compound fertilizer. The amount of fertilizer applied in each period was the same as that in treatment (3), and 0.5% sodium molybdate was sprayed 7 days before harvest. Treatment (6): 50 kg of Mushi compound fertilizer. The amount of top-dressing fertilizer in each period was the same as that of treatment (3), and 0.5% of manganese chloride was sprayed 7 days before harvest. Treatment (7): Mushi urea 16 kg, superphosphate 25 kg, potassium chloride 12.5 kg. 7.5 kg of superphosphate is used as base fertilizer. The first topdressing application of urea 3 kg, the second topdressing application of urea 5 kg, superphosphate 5 kg, the third top dressing application of urea 5 kg, superphosphate 5 kg, potash 5 kg, the fourth topdressing application of urea 3 Kg, superphosphate 7.5 kg, potassium chloride 7.5 kg. Treatment (8): Mushi urea 16 kg, potassium chloride 12.5 kg. Among them, 3 kg of urea was applied for the first time, 5 kg of urea was applied for the second time, the first 5 kg of urea and potassium chloride were applied for the third time, and 4 kg of urea and 7.5 kg of potassium chloride were applied for the fourth time. A randomized block design was used with 3 replicates. The plot had an area of ​​20 square meters and 500 kg of chicken manure per acre was used as a base fertilizer. The sowing was carried out on November 3, 2001, and the seedlings were drilled. On December 3, the seedlings were seeded and 671 plants were treated. During the harvest period, 10 samples were taken for each treatment to measure the plant height, loquat height, upsetting, and stubble weight, and the contents of vitamin c, protein, reducing sugar, and nitrate were analyzed. II. Results and Analysis 1. The effect of different fertilization treatments on the yield of Chinese cabbage was shown in Table 1. The yield of the treatment (7) was the highest and the yield per mu was 843 kg; the rest were the processing (4) mu of the output of 808 kg; 5) Acres yield is 787 kg; Treatment (2) Mu yield is 776.5 kg; Treatment (1) Mu yield is 759.5 kg; Treatment (3) Mu yield is 746 kg; Treatment (6) Mu yield is 842 kg; The lowest output of 8) is 711.5 kg. All treatment yields were not significantly different from conventional fertilization (CK), indicating that the effect of different fertilization treatments on the yield of Chinese cabbage was not significant. 2. Effects of different fertilization treatments on the growth of Chinese cabbage hearts All the treated Chinese cabbage hearts grew normally and no significant differences were observed. Sampling investigations are shown in Table 2 for the biological traits of each treatment. From Table 2, it can be seen that the rough and heavy weights of treatments (1), (3), (5), (6) and (8) are slightly coarser and slightly heavier than the control, but the difference is not significant. 3. Effects of different fertilization treatments on the quality of Chinese cabbage hearts The contents of vitamin c, protein, reducing sugar and nitrate of each Chinese cabbage were measured. The results are shown in Table 3. As can be seen from Table 3, the crude protein and vitamin C content in treatment (1) was the highest, which was 2.3 2% and 1449 mg/kg, respectively, 0.18 percentage points and 236 mg/kg increase over conventional fertilization treatment (ck), an increase of 8.4. % and 19.5%; their handling of the container and the difference is not significant. From the standpoint of nitrate content, the nitrate content of the topdressing organic fertilizer (1) was the lowest, which was 2200 mg/kg, which was 888 mg/kg lower than the conventional fertilization treatment, a decrease of 28.8 %. Higher content. The application of manganese and molybdenum fertilizers before harvesting was beneficial to reduce the nitrate content in commercial rapeseed meal, in which the molybdenum spray treatment (5) nitrate content was 2507 mg/kg, which was 209 mg/kg lower than the treatment (3). , A decrease of 7%, manganese treatment, ie treatment (6) nitrate content of 2256 mg / kg, 46 mg / kg lower than treatment (3), a decrease of 14.9%. 3. Summary and discussion The results of this experiment show that different fertilization treatments have no obvious effect on the growth and yield of Chinese cabbage. Different fertilization treatments had a greater impact on the nutrient composition and nitrate content of Chinese cabbage, and the organic protein fertilizer had higher protein, vitamin c and reducing sugar content, and the lowest nitrate content was the best quality. Spraying molybdenum and manganese fertilizers before harvesting is beneficial to reduce the nitrate content in rapeseed meal, which can be reduced by 14.9% -70%, of which the effect of manganese spray treatment is obvious. In the production process of Chinese cabbage, organic fertilizer should be applied as much as possible to reduce the amount of chemical fertilizers. Molybdenum fertilizer or manganese fertilizer should be sprayed properly before harvest to reduce the nitrate content and improve the quality of Chinese cabbage.