Visco chop-a new technique for nucleus separation for soft cataracts in femtolaser assisted cataract surgery

【正】INTRODUCTION Femtosecond laser technology,introduced clinically for ophthalmic surgery as a technique for creating lamellar flaps in laser in situ keratomileusis(LASIK),has recently been developed into a tool for cataract surgery.Preliminary experience for femtosecond laser-assisted cataract surgery show appropriate safety and efficacy,and possible advantage over conventional cataract surgery[1-4].The ability of the femtosecond laser to fragment the lens results in the need for less ultrasound energy to be expended inside the eye.Several studies indicate that less effective phacoemulsification time is needed to emulsify the lens

Creating new middle breeding materials by utilizing new techniques

A new breeding program"Creating new middle breedingmaterials by utilizing new techniques",cooperated byChina National Rice Research Institute (CNRRI)andJapan International Research Center for Agricultural Sci-ence(JIRCAS)",started in Hangzhou,China in 1999.

New technique for identifying varieties resistance to rice blast

After 8 yrs lab experiments and field tests, an advanced technique for identifying varieties resistance to rice blast was developed by a research group in Plant Protection Institute, Zhejiang Academy of Agricultural Sciences. With this technique, the inoculum was prepared on a maize-rice-straw-agar media which was suitable for sporulation of most rice blast pathogen isolates. To avoid possible virulence variation during the vegetative growth, the conidia were harvested and preserved for later different sets of resistance evaluation tests. A simple and precise new method—smear inoculation was used for infection. The experi-

A new technique of upper-middle face rhytidectomy without destroying the configuration of sideburns

To introduce a safe,effective and lasting rhytidectomy technique without destroying the configuration of sideburns.Methods The operation is performed through the coronal incision,the temporal incision that is paralleled to the nasolabial sulcus,and the preauricular incision in the sideburns.Multi-layer dissection of facial tissue is made.Results 46 patints with aging face have been treated using this technique since 2002.All patinets obtained good curative effects without any severe complications.Conclusion This operation technique may maintain the natural configuration of the preauricular area and sideburns,result obscure incision scar and avoid harming important nerves or vessels.Multi-layer dissection accords with anatomical principles and produces a lasting curative effect.6 refs,2 figs.

A NEW TECHNIQUE FOR SOLVING NON-AXIALLY SYMMETRICALLARGE DEFLECTION OF ELASTIC AND THIN CIRCULAR PLATES

A new technique for solving large deflection problem of circular plates flexural non-axisymmetrically is proposed in this paper. The large deflection problem of a circular plate with built-in edge under non-axisymmetrical load is taken as an example to clarify the principle and procedure of the technique mentioned here. The technique given here can also be used to solve large deflection problem of circular plates under other non-axisymmetrical loads and boundary conditions.

Special issue on new techniques and approaches for neuroscience

In this special issue of Neuroscience Bulletin, the topics range over emerging techniques from the nanoscopic to the macroscopic scales. At the nanoscopic level, new ways to obtain images at the individual protein level in synapses take the re- construction of synaptic architecture to a new level, while using chromophores to disable specific proteins at selected subcellular locations allows the assessment of their functional roles in such dynamic processes as growth-cone extension and cell division. The subtle influences of axonal chan- nels and receptors on neurotransmission are revealed by recording from the blebs induced by axotomy, while methods from cloning to chemical computation are being applied to dissecting the structural-functional rules by which ion channels operatet41.

A New Cultivation Technique of Cangmai 6005 for High Yield in Cangzhou Dry-alkali Land

Cangmai 6005 is a national wheat variety approved by Cangzhou Academy of Agriculture and Forestry Sciences,which has the characteristics of drought resistance,salt tolerance,high yield and stable yield. According to the characteristics of dry-alkali land in Cangzhou City and the variety characteristics,the new cultivation technique was completed.

A New Technique for CCD Camera Auto-Calibration

A novel feature-round-based coplanar drone for the CCD camera auto-calibration is designed. Based on the ellipse similarity, an ellipse recognition algorithm is proposed. The experiment indicates the calibration error is less than 0.4 pixel.

A new technique of integral representations in C^(n)

A new technique of integral representations in Cn, which is different from the well-known Henkin technique, is given. By means of this new technique, a new integral formula for smooth functions and a new integral representation of solutions of the -equations on strictly pseudoconvex domains in Cn are obtained. These new formulas are simpler than the classical ones, especially the solutions of the -equations admit simple uniform estimates. Moreover, this new technique can be further applied to arbitrary bounded domains in Cn so that all corresponding formulas are simplified.

A NEW TECHNIQUE IN SOLVING UNSTEADY AND STEADY WAVEMAKING PROBLEMS

Under the' assumption of linearization of the free-surface condition, making use of Green's function method and the convolution theorem, analytic solutions of perturbation velocity potentials which correspond to three dimensional unsteady thickness problem and lifting problem caused respectively by arbitrary motions of a body and a hydrofoil beneath the water surface can be achieved in the closed form, In general, the whole perturbation velocity potential consists of three terms, namely φ=φ1+φ2+φ3 , where φ1 denotes the induced velocity potential of the surface singularity distribution in an unbounded fluid, φ2 denotes its mirror image and φ3 denotes that of wave formation which includes the memory effect of the action of the singularity distribution. Utilizing the polynomial expansion of sin[(t-τ)] , the similarity between φ2 and φ3 is discovered and thus a simpler differential relation between them is obtained. Applying this relation, the amount of work in calculation of φ3 which is the most time-consuming one will be reduced significantly. It is favorable not only for dealing with unsteady wave- making problems but also for solving the steady ones in virtue of evading a major difficulty which has to be encountered during the evaluation of an improper inte- gral containing a singularity in the Green's function. The limitation of this new technique turns out to be its slower convergence as the Froude number is lower.

Adjustable muscle plication:a new surgical technique for strabismic patients with high risk for anterior segment ischemia

【正】INTRODUCTION Anterior ciliary arteries provide 70%of the vascular supply of the anterior segment.A significant interruption of the vascular flow of these arteries increases the risk for anterior ischemia.Although the frequency of this special condition is low after strabismus surgery(1:13 000)[1],its effects may involve substantial visual problems[2].We report the successful outcome of a new surgical approach for strabismus management in a case of high risk for anterior ischemia.Specifically,we show the correction of the horizontal ocular deviation by means of an adjustable muscle

Three-Dimensional Rigid-Plastic FEM Simulation of Bulk Forming Processes with New Contact and Remeshing Techniques

Some techniques such as die surface description, contact judgement algorithm and remeshing are proposed to improve the robustness of the numerical solution. Based on these techniques, a three-dimensional rigid-plastic FEM code has been developed. Isothermal forging process of a cylindrical housing has been simulated. The simulation results show that the given techniques and the FEM code are reasonable and feasible for three-dimensional bulk forming processes.

Some New Techniques for the Reception of English Vocabulary

Introduction Low efficiency of verbal memorization and high frequency of vocabulary testing in various examinations which are necessary to graduation,job-finding and overseas academic pursuit looms as a big headache for college students. Some language teachers and memory researchers have been seeking panaceas for effective retention of lexical input and development of retrieval techniques for ages; however, cure-alls prescribed by them sometimes cannot generate satisfactory results in tackling lexical complexity for Chinese

A NEW COPY TECHNIQUE·FOR SPECIMEN GRATING IN MOIRE METHOD

A special X-radiography,used in obtaining the deformed specimen grating inin-plane moire method is introduced.The density of gridline is up to 50 lines / mm.Thismethod is suitable not only for the copy of grating in fiat surface but also for that incurved surface.From unfolding the copy and superposing it with a reference grating,themoire effect arises.By processing this moire fringes with the digital image processing unit,the strain distribution would be obtained.Furthermore,the u-and v-displacementfields could be separated by the optical processing of this copy.Themeasurment sensitivity and accuracy become better simultaneously because ofthe fringe multiplication.Thus,this method makes it possible to measure theelastic-plastic strain precisely in any developable curved surfaces,for example,the surface of shaft,rotary-wing,cylindrical shell and cone shell etc.

New autologous material for the frontalis suspension technique:superficial temporal fascia

The frontalis suspension technique, which is a well-known surgical procedure, has been used for congenital ptosis for many years [1]. Several autologous and foreign grafts or materials have been preferred for this suspension, such as collagen, tensor fascia lata, palmaris longus tendon, deep temporal fascia, catgut, prolene, silicone, stainless steel, and supramid suture . Each of these have their own advantages and disadvantages; however, the superficial temporal fascia has not been used for the frontalis suspension method before.

Constitutive modeling for mechanical behaviors of geomaterials, newdesigns and techniques in geotechnical engineering

This Special Issue of the Journal of Rock Mechanics and GeotechnicalEngineering （JRMGE） contains 13 papers prepared by internationalexperts on various general topics in geomechanics, rockmechanics and geotechnical engineering. It represents a usefulmix of theoretical developments, testing and practical applications.We present in the following brief details in the papers, alphabeticallyin accordance with the last name of the first author.Barla presents a review of tunneling techniques with emphasison the full-face method combining full-face excavation and facereinforcement by means of fiber-glass elements with a yieldcontrolsupport. This method has been used successfully in difficultgeologic conditions, and for a wide spectrum of ground situations.The validation of the method with respect to the Saint Martin LaPorte access adit along the LyoneTurin Base tunnel experiencingseverely squeezing conditions during excavation is also includedin the paper. The numerical modeling with consideration of therock mass time-dependent behavior showed a satisfactory agreementwith monitoring results.

CNPC's New Progress in Well Cementing Techniques

Well cementing is an important step in petroleum engineering territory. Through many years study and research, China Nation Petroleum Corporation(abbreviated as CNPC) has made many good progresses in cementing process, and a series of cementing materials, cementing tools, and associated cementing techniques to them have been developed. Over the recent years, there have been significant improvements in application of single slurry system to super deep well, horizontal well, large displacement well and wells with large temperature span between cementing top and well bottom. Favorable results have been gained in field application of super high density cement slurry system and super low density cement slurry system. Application of conventional cementing tools and accessories has been the matured techniques, and breakthroughs have been made in liner hanger and swellable material.

One-half layer pancreaticojejunostomy with the rear wall of the pancreas reinforced:A valuable anastomosis technique

BACKGROUND Postoperative pancreatic fistula(POPF)is one of the most common and serious complications after pancreaticoduodenectomy(PD).To effectively reduce the incidence of POPF,we designed a new type of pancreaticojejunostomy(PJ),which was termed one-half layer PJ with the rear wall of the pancreas reinforced.AIM To explore the clinical application value of this new technique.METHODS We compared 62 patients who had undergone PD by either the traditional ductto-mucosa anastomoses or the new one-half layer PJ with the rear wall of the pancreas reinforced method at our hospital from May 2015 to September 2019.All 62 patients were operated by the same surgeon experienced in both procedures.We retrospectively analyzed patient characteristics,perioperative outcomes,and surgical results.RESULTS There was no significant difference between the two groups in basic information except the postoperative hospital stays,14.7±5.4 d in the traditional duct-tomucosa anastomoses group and 12.0±4.2 d in the one-half layer PJ group(P=0.042).In terms of postoperative complications,the one-half layer PJ group had a lower rate of POPF than the traditional group.The overall number of cases with POPF was 8(24.2%)in the traditional group and 2(6.9%)in the one-half layer group(P=0.017).Additionally,the rate of grades B and C POPF was lower in the one-half layer group(3.4%)compared with that(12.1%)in the traditional group(P=0.010).One patient died due to hemorrhage caused by severe pancreatic fistula in the traditional group.CONCLUSION One-half layer PJ with the rear wall of the pancreas reinforced is a safe and feasible procedure that can successfully reduce the rate of POPF.It may be a promising technique for PJ after PD.

Epiphyseal Lengthening Operation-An Improved Technique

An improved method of epiphyseal lengthening operation and subsequent outer fixation are presented on the basis of experience in 30 cases. The operative technique is described in detail, including the different options of separative traction and osteotomy at subtrochanteric , distal part of the upper femur and lower tibial levels. The physiological and histological research concerning this method is discussed. The authors believe that this procedure is better than the other methods.