Difficulties of facelift in patients with scar after treatment of facial liposuction or thread lift sutures

Wang Zhi-Jun,Li Guanyi,Guo Shuzhong,Fu DongQing,Shen Bozhang,Bai Chengxin 대한미용의학회 2021 대한미용의학회지 Vol.5 No.2

Objective: To explore the methods and safety of general abnormal anatomical layers and structure in rhytidectomy, which is also of clinical significance. In this group, 39 patients with static and dynamic deformities formed at different levels after liposuction and thread technique more than one time were treated with stable and active separation skills in high SMAS facelift operation. The results showed that the patients of this group could get the same effect of younger postoperative operation as “initial face” and solve dynamic adhesion deformity. Methods: Magnetic resonance imaging and ultrasound were performed before operation, focusing on the abnormal changes of facial soft tissue. The results showed that the signal of the foreign body, the position and texture of scar, the relationship between scar and masseter fascia, buccal fat pad, and whether there was tissue defect or hyperplasia. In the operation, the normal separation was made in the second and fourth layers of the previously safe and easy to separate plane, instead of in the dense one or two layers of the scar. It is an alternative microsurgical separation technique. The key point is to separate the incomplete SMAS flap to achieve the expected good effect of rhytidectomy, release the scar adhesion and facial spasm. At the same time, the severed injury of facial nerve branches should be strictly prevented. Results: 74 cases of facelift were taken in recent eight months and 67 patients were treated with micro plastic surgery. Among them, 39 patients received more than one facial liposuction and more than one thread lift. In the scar formed by liposuction and thread technology, liposuction is especially serious; liposuction can still absorb the structural layer, and scar directly involves the SMAS and buccal fat pad envelope containing facial nerve branches, one of which directly causes the injury of the mandibular marginal branch. Most of the chronic granuloma scar formed after the degradation of the thread technology is in the facial space, which causes the scar atresia of the space. The flap and SMAS flap of 39 cases were separated, most of which were facial nerve branches in scar. All of them were difficult to separate and form the SMAS flap of superficial temporal fascia-Orbicularis oculi-platysma, and 89.6% of the excellent facelift effect was obtained. Facial nerve injury was found in 2 cases, 1 case was right mandible marginal branch traction injury, and the other side was left corner nerve injury. In the process of recovery. Conclusion: For patients with facial liposuction and thread technique, doctors must be prepared for the difficult separation of scar adhesion and have a high risk of facial nerve branch disconnection. If we don’t pursue the rejuvenation effect, it will lead to the existence of surgical effect discount, bilateral asymmetry, and dynamic adhesion deformity.

Selective strengthening of lipid metabolism and the rapid immune response of Ostrinia furnacalis larvae parasitized by Macrocentrus cingulum

Wang Libao,Liu Xu,Han Zhaoyang,Li Shuzhong,Feng Congjing 한국응용곤충학회 2024 Journal of Asia-Pacific Entomology Vol.27 No.1

The Macrocentrus cingulum is a vital endoparasitic wasp that parasites in Ostrinia furnacalis larvae. It has been widely utilized for biological control of corn borer. Although previous studies have explored how the wasps suppress the host’s immunity, further research is required to determine the impact of the wasps on the host’s lipid metabolism and activated immune response. In this study, high-throughput transcriptome sequencing, quantitative real-time PCR, and physiological and biochemical methods were used to investigate the balance between energy metabolism and immunity in parasitic systems. The results showed that specific genes linked to lipid metabolism and transportation were up-regulated in parasitized O. furnacalis larvae, including AKHR, AKH, apoLpIII, and FAS. Additionally, M. cingulum triggered immune responses in the parasitized larvae, leading to rapid recognition and the production of immunity effectors, such as Lysozyme and antimicrobial peptides, to protect against the invading wasps. The phenoloxidase (PO) activity was inhibited as a result of parasitization. Parasitism selectively promoted lipid metabolism and activated the immune recognition response, significantly up-regulated immune pattern recognition receptors (PRRs) and effector genes, but suppressed the PPO cascade response in O. furnacalis larvae. This study can shed light on lipid metabolism, immune response, and activating the immune recognition response for parasitoid and host co-evolution and provide insight into the biological control of O. furnacalis.

Comprehensive potential evaluation of the bio-oil production and nutrient recycling from seven algae through hydrothermal liquefaction

Wenhan Song,Shuzhong Wang,Donghai Xu,Yang Guo,Chuang Yang,Jiandong Zhang,Yanhui Li 한국화학공학회 2019 Korean Journal of Chemical Engineering Vol.36 No.10

Hydrothermal liquefaction (HTL) of seven algae was conducted at both 280 and 350 oC with a reaction time of 30min and a mass ratio of 1/4 of algae to water to evaluate the utilization potential of bio-oil production and nutrient recycling in the aqueous by-product and solid residue particles. Chlorella and Nannochloropsis sp. exhibited the highest bio-oil yields at 280 oC (36.5% from Nannochloropsis sp.) and 350 oC (38.1% from Chlorella). Additionally, temperature had little effect on the energy recovery from Chlorella, Nannochloropsis sp., Spirulina, Cyanophyta and Euglena. The carbohydrates and lipids in the algae were primarily related to monoaromatic and single-ring heterocyclic compound generation in bio-oil. In addition, carbohydrates and proteins significantly affected oxygenated compound production. The sizable total carbon, ammonia nitrogen, total nitrogen and phosphate contents in the aqueous byproducts showed great potential as nutrient sources for algal cultivation and the production of value-added chemicals through recycling. Higher temperatures increased the percentage of ammonia nitrogen in the total nitrogen and reduced the phosphate concentration in the aqueous by-product. According to potential evaluation factors, Chlorella, Nannochloropsis sp., Spirulina, Cyanophyta and Euglena totally showed higher potential in terms of bio-oil production and aqueous nutrient recycling than Dunaliella salina and Enteromorpha prolifera, in which Nannochloropsis sp. exhibited the greatest utilization potential at investigated conditions.

Capture of CO2 from coal using chemical-looping combustion: Process simulation

Ming Luo,Shuzhong Wang,Jiabin Zhu,Longfei Wang,Mingming Lv 한국화학공학회 2015 Korean Journal of Chemical Engineering Vol.32 No.3

Coal direct chemical-looping combustion (CLC) and coal gasification CLC processes are the two basicapproaches for the application of the CLC technology with coal. Two different combined cycles with the overall thermalinput of 1,000MW (LHV) were proposed and simulated, respectively, with NiO/NiAl2O4 as an oxygen carrierusing the ASPEN software. The oxygen carrier circulation ratio in two CLC processes was calculated, and the influenceof the CLC process parameters on the system performance such as air reactor temperature and the turbine inletsupplementary firing temperature was investigated. Results found were that the circulation ratio of the oxygen carrierin the coal gasification CLC process is smaller than that in the coal direct CLC process. In the coal direct CLCcombined system, the system efficiency is 49.59% with the CO2 capture efficiency of almost 100%, assuming the airreactor temperature at 1,200 oC and the fuel reactor temperature at 900 oC. As a comparison, the system efficiency ofcoal gasification CLC combined system is 40.53% with the CO2 capture efficiency of 85.2% when the turbine inlet temperatureis at 1,350 oC. Increasing the supplementary firing rate or decreasing the air reactor temperature can increasethe system efficiency, but these will reduce the CO2 capture efficiency.