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| 1 | Kaolin-based geopolymers with various NaOH concentrations显示文摘Kaolin geopolymers were produced by the alkali-activation of kaolin with an activator solution (a mixture of NaOH and sodium silicate solutions). The NaOH solution was prepared at a concentration of 6-14 mol/L and was mixed with the sodium silicate solution at a Na2SiO3 /NaOH mass ratio of 0.24 to prepare an activator solution. The kaolin-to-activator solution mass ratio used was 0.80. This paper aimed to analyze the effect of NaOH concentration on the compressive strength of kaolin geopolymers at 80℃for 1, 2, and 3 d. Kaolin geopolymers were stable in water, and strength results showed that the kaolin binder had adequate compressive strength with 12 mol/L of NaOH concentration. When the NaOH concentration increased, the SiO2/Na2O decreased. The increased Na2O content enhanced the dissolution of kaolin as shown in X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) analyses. However, excess in this content was not beneficial for the strength development of kaolin geopolymers. In addition, there was the formation of more geopolymeric gel in 12 mol/L samples. The XRD pattern of the samples showed a higher amorphous content and a more geopolymer bonding existed as proved by FTIR analysis. | C.Y. Heah H. Kamarudin A.M. Mustafa Al Bakri M. Bnhussain M. Luqman I. Khairul Nizar C.M. Ruzaidi Y.M. Liew | 2013 | International Journal of Minerals,Metallurgy and Materials2013，20，3： | 3 |
| 2 | Feasibility of robotic assisted bladder sparing pelvic exenteration for locally advanced rectal cancer:A single institution case series显示文摘BACKGROUND Pelvic exenteration for locally advanced rectal cancer involving prostate has been performed via open surgery.Robotic pelvic exenteration offers benefits of better pelvic visualisation and dissection for bladder preserving prostatectomy with vesicourethral anastomosis,while achieving clear margins.AIM To determine the feasibility of robotic assisted bladder sparing pelvic exenteration.METHODS We describe robotic assisted pelvic exenteration in three cases of locally advanced rectal cancer involving prostate and seminal vesicles(SV).The da Vinci S robotic system was used.Robotic console was docked at left oblique position for abdominal phase and redocked to between the patient’s legs for pelvic phase.All three cases were performed fully robotically at Tan Tock Seng Hospital by colorectal and urological teams.RESULTS Case 1:67-year-old with low rectal tumour 3 cm from anal verge involving the prostate.He underwent neo-adjuvant chemoradiotherapy and robotic abdominoperineal resection with en-bloc prostatectomy.Case 2:66-year-old with low rectal tumour 3 cm from anal verge involving prostate and bilateral SV.He underwent neo-adjuvant chemoradiotherapy and robot assisted ultra-low anterior resection with coloanal anastomosis and en-bloc prostatectomy.Case 3:57-year-old with metachronous rectal tumour in the rectovesical pouch inseparable from the anterior mid rectum,prostate and bilateral SV.He underwent robot assisted ultra-low anterior resection with en-bloc prostatectomy.Bladder neck margin revealed cauterized tumour cells,and he underwent total cystectomy and ileal conduit creation.Histology revealed no residual tumour.All patients are currently disease free CONCLUSION Robot assisted bladder sparing pelvic exenteration can be safely performed in locally advanced rectal cancer with acceptable surgical outcome while preserving benefits of minimally invasive surgery. | Nathaniel H Heah Kar Yong Wong | 2020 | World Journal of Gastrointestinal Surgery2020，12，4： | 2 |
| 3 | Laparoscopic suture rectopexy without resection is effective treatment for full-thickness rectal prolapse显示文摘 | Heah SM Hartley JE Hurley J | 2000 | Dis Colon Rectum2000，43，5： | 1 |
| 4 | Biofeedback is effective treatment forlevator ani syndrome显示文摘 | Heah SM Ho YH Tan M | 1997 | Dis Colon Rectum1997，40，2： | 1 |
| 5 | coherent measure of risk显示文摘 | Artzner P De lbaen F Eber JM Heah D | 1999 | Mathematical Finance1999，9，3： | 1 |
| 6 | Comparison of J-pouch and coloplasy pouch for low rectal cancers:a randomized,controlled trial investigating functional results and comparative anastomotic leak rates显示文摘 | Yik-Hong Ho Steven Brown Siu-Meng Heah | 2002 | Ann Surg2002，236，1： | 1 |
| 7 | Comparison of J-pouch and coloplasty pouch for low rectal cancer:a randomized,controlled trial investigating functional results and comparativeanastomosis leak rates显示文摘 | HO Y H BOROWN S HEAH S M | 2002 | Ann Surg2002，236，1： | 1 |
| 8 | Cat alyt ic mechanismof lipid oxidation following high Pressure treatment in pork fat and meat 显示文摘 | C HEAH P B L EDW ARD D A | 1997 | Journal of Food Science1997，62，6： | 1 |
| 9 | Biofeedback is effective treatment for levator ani syndrome显示文摘 | Sieu-Min Heah Yik-Hong Ho Margaret Tan Adrian F. P. K. Leong | 1997 | Diseases of the Colon & Rectum1997，，2： | 1 |
| 10 | Comparison of J-pouch and coloplasty pouch for low rectal cancers:a randomized,controlled trial investigating functional results and comparative anastomotic leak rates显示文摘 | Ho YH Brown S Heah SM | 2002 | Ann Surg2002，236，1： | 1 |
| 11 | Laparoscopic suture rectopexy without resection is effective treatment for full-thickness rectal prolapse 显示文摘 | Heah SM Hartley JE | 2000 | Dis Colon Rectum2000，43，： | 1 |
| 12 | CoherentMeasure of Risk显示文摘 | Artzner P Delbaen F Eber J H Heah D | 1999 | Mathematical Finance1999，，3： | 1 |
| 13 | Comparison of J-pouch and eoloplasty pouch for low rectal cancers:a randomized, controlled trial investigating functional results and comparative anastomotic leak rates显示文摘 | Yik-Hong Ho Steven Brown Siu-Meng Heah | 2002 | Arm Surg2002，236，1： | 1 |
| 14 | Tumor size is irrelevant in predicting malignant potential of carcinoid tumors of the rectum显示文摘 | S.-M. Heah K.-W. Eu B.-S. Ooi Y.-H. Ho F. Seow-Choen | 2001 | Techniques in Coloproctology2001，，2： | 1 |
| 15 | Coherent Measureof Risk显示文摘 | Artzner P Delbaen F Eber J H Heah D | 1999 | Mathematical Finance1999，，3： | 1 |
| 16 | Comparison of J-pouch and coloplasty pouch for low rectal cancers:a randomized, controlled trial investigating functional results and comparative anastomoticleak rates显示文摘 | Ho YH Brown S Heah SM | 2002 | Ann Surg2002，236，1： | 1 |
| 17 | Coherent Measure of Risk显示文摘 | Delbaen F Eber J M Heah D | 1999 | Mathematical Finance1999，9，3： | 1 |
| 18 | Laparoscopic su- ture rectopexy without resection is effective treatment for full-thickness rectal prolapse显示文摘 | Heah SM Hartley JE Hurley J | 2000 | Dis Colon Rectum2000，43，5： | 1 |
| 19 | Laparoscopic suture reetopexy without resection is effective treatment for full-thickness rectal pro-lapse显示文摘 | Heah SM Hartley JE Hurley J | 2000 | Dis Colon Rectum2000，43，5： | 1 |
| 20 | Laparoscopic suture rectopexy without resection is effective treatment for full-thickness rectal prolapse显示文摘 | Hartley J E | 2000 | Dis Colon Rectum2000，43，5： | 1 |
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