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author:("Yu, gehan")
1.  Endometrial stromal sarcoma arising in vaginaEndometrial stromal sarcoma arising in vagina 
Endometrial stromal sarcoma (ESS) arising in the vagina is an extremely rare extrauterine endometrial stroma sarcoma, with only 4 cases reported in the literature up to date. Here we report a case of neoplasm originating from vagina. A 32-year-old woman complained of intermittent vaginal bleeding especially after intercourse. A mass with a diameter of 1.0 cm was found in the middle and upper segments of the right posterior vaginal wall. Biopsy showed ESS. Total abdominal hysterectomy, unilateral salpingo-oophorectomy (right) and partial vaginectomy were performed. No ESS lesion was found in endometrium. The patient received six courses of platinum-containing combination chemotherapy after surgery and was free of tumor 18 months after the diagnosis of ESS. The diagnosis of ESS relies on pathologic examination. CD10 is the most useful immunohistochemical marker for the diagnosis of this tumor. The mainstay treatment of ESS is surgery. Local excision and ovarian retaining may be considered in premenopausal women.
PMCID: PMC3843284  PMID: 24294390
Extrauterine sarcoma; endometrial stromal; vagina; immunohistochemistry
2.  Direct Growth of Vertically-oriented Graphene for Field-Effect Transistor Biosensor 
Scientific Reports  2013;3:1696.
A sensitive and selective field-effect transistor (FET) biosensor is demonstrated using vertically-oriented graphene (VG) sheets labeled with gold nanoparticle (NP)-antibody conjugates. VG sheets are directly grown on the sensor electrode using a plasma-enhanced chemical vapor deposition (PECVD) method and function as the sensing channel. The protein detection is accomplished through measuring changes in the electrical signal from the FET sensor upon the antibody-antigen binding. The novel biosensor with unique graphene morphology shows high sensitivity (down to ~2 ng/ml or 13 pM) and selectivity towards specific proteins. The PECVD growth of VG presents a one-step and reliable approach to prepare graphene-based electronic biosensors.
doi:10.1038/srep01696
PMCID: PMC3631944  PMID: 23603871
3.  Growth of carbon nanowalls at atmospheric pressure for one-step gas sensor fabrication 
Nanoscale Research Letters  2011;6(1):202.
Carbon nanowalls (CNWs), two-dimensional "graphitic" platelets that are typically oriented vertically on a substrate, can exhibit similar properties as graphene. Growth of CNWs reported to date was exclusively carried out at a low pressure. Here, we report on the synthesis of CNWs at atmosphere pressure using "direct current plasma-enhanced chemical vapor deposition" by taking advantage of the high electric field generated in a pin-plate dc glow discharge. CNWs were grown on silicon, stainless steel, and copper substrates without deliberate introduction of catalysts. The as-grown CNW material was mainly mono- and few-layer graphene having patches of O-containing functional groups. However, Raman and X-ray photoelectron spectroscopies confirmed that most of the oxygen groups could be removed by thermal annealing. A gas-sensing device based on such CNWs was fabricated on metal electrodes through direct growth. The sensor responded to relatively low concentrations of NO2 (g) and NH3 (g), thus suggesting high-quality CNWs that are useful for room temperature gas sensors.
PACS: Graphene (81.05.ue), Chemical vapor deposition (81.15.Gh), Gas sensors (07.07.Df), Atmospheric pressure (92.60.hv)
doi:10.1186/1556-276X-6-202
PMCID: PMC3211258  PMID: 21711721
4.  Enhancing Solar Cell Efficiencies through 1-D Nanostructures 
Nanoscale Research Letters  2008;4(1):1-10.
The current global energy problem can be attributed to insufficient fossil fuel supplies and excessive greenhouse gas emissions resulting from increasing fossil fuel consumption. The huge demand for clean energy potentially can be met by solar-to-electricity conversions. The large-scale use of solar energy is not occurring due to the high cost and inadequate efficiencies of existing solar cells. Nanostructured materials have offered new opportunities to design more efficient solar cells, particularly one-dimensional (1-D) nanomaterials for enhancing solar cell efficiencies. These 1-D nanostructures, including nanotubes, nanowires, and nanorods, offer significant opportunities to improve efficiencies of solar cells by facilitating photon absorption, electron transport, and electron collection; however, tremendous challenges must be conquered before the large-scale commercialization of such cells. This review specifically focuses on the use of 1-D nanostructures for enhancing solar cell efficiencies. Other nanostructured solar cells or solar cells based on bulk materials are not covered in this review. Major topics addressed include dye-sensitized solar cells, quantum-dot-sensitized solar cells, and p-n junction solar cells.
doi:10.1007/s11671-008-9200-y
PMCID: PMC2893966
Solar cells; Nanowires; Nanotubes; Nanorods; Quantum dots; Hybrid nanostructures
5.  Enhancing Solar Cell Efficiencies through 1-D Nanostructures 
Nanoscale Research Letters  2008;4(1):1-10.
The current global energy problem can be attributed to insufficient fossil fuel supplies and excessive greenhouse gas emissions resulting from increasing fossil fuel consumption. The huge demand for clean energy potentially can be met by solar-to-electricity conversions. The large-scale use of solar energy is not occurring due to the high cost and inadequate efficiencies of existing solar cells. Nanostructured materials have offered new opportunities to design more efficient solar cells, particularly one-dimensional (1-D) nanomaterials for enhancing solar cell efficiencies. These 1-D nanostructures, including nanotubes, nanowires, and nanorods, offer significant opportunities to improve efficiencies of solar cells by facilitating photon absorption, electron transport, and electron collection; however, tremendous challenges must be conquered before the large-scale commercialization of such cells. This review specifically focuses on the use of 1-D nanostructures for enhancing solar cell efficiencies. Other nanostructured solar cells or solar cells based on bulk materials are not covered in this review. Major topics addressed include dye-sensitized solar cells, quantum-dot-sensitized solar cells, and p-n junction solar cells.
doi:10.1007/s11671-008-9200-y
PMCID: PMC2893966
Solar cells; Nanowires; Nanotubes; Nanorods; Quantum dots; Hybrid nanostructures

Results 1-5 (5)