11 research outputs found
Facile Fabrication of Superhydrophobic Sponge with Selective Absorption and Collection of Oil from Water
A simple vapor-phase
deposition process has been developed to fabricate
a superhydrophobic and superoleophilic sponge using ordinary commercial
polyurethane sponges. The simultaneous properties of superhydrophobicity
and superoleophilicity enable the sponge to float on the water surface
and selectively absorb oil from water. Its uptake capacities of different
oils (motor oil, lubricating oil, pump oil, silicone oil, and soybean
oil) in the oil–water mixtures were all above 20 g/g. The absorbed
oil could be collected by squeezing the sponge, and the recovered
sponge could be reused in oil–water separation for many cycles
while still maintaining a high capacity. This is helpful for realizing
the proper disposal of the oil and avoiding secondary pollution. A
similar experiment was performed using the as-prepared sponge to remove
petroleum from contaminated water. The results suggest that our material
might find practical applications in the cleanup of oil spills and
the removal of organic pollutants from water surfaces
Facile Fabrication of Superhydrophobic Sponge with Selective Absorption and Collection of Oil from Water
A simple vapor-phase
deposition process has been developed to fabricate
a superhydrophobic and superoleophilic sponge using ordinary commercial
polyurethane sponges. The simultaneous properties of superhydrophobicity
and superoleophilicity enable the sponge to float on the water surface
and selectively absorb oil from water. Its uptake capacities of different
oils (motor oil, lubricating oil, pump oil, silicone oil, and soybean
oil) in the oil–water mixtures were all above 20 g/g. The absorbed
oil could be collected by squeezing the sponge, and the recovered
sponge could be reused in oil–water separation for many cycles
while still maintaining a high capacity. This is helpful for realizing
the proper disposal of the oil and avoiding secondary pollution. A
similar experiment was performed using the as-prepared sponge to remove
petroleum from contaminated water. The results suggest that our material
might find practical applications in the cleanup of oil spills and
the removal of organic pollutants from water surfaces
Robust and Durable Superhydrophobic Cotton Fabrics for Oil/Water Separation
By
introducing the incorporation of polyaniline and fluorinated
alkyl silane to the cotton fabric via a facile vapor phase deposition
process, the fabric surface possessed superhydrophobicity with the
water contact angle of 156° and superoleophilicity with the oil
contact angle of 0°. The as-prepared fabric can be applied as
effective materials for the separation of water and oil mixture with
separation efficiency as high as 97.8%. Compared with other materials
for oil/water separation, the reported process was simple, time-saving,
and repeatable for at least 30 times. Moreover, the obtained fabric
kept stable superhydrophobicity and high separation efficiency under
extreme environment conditions of high temperature, high humidity,
strong acidic or alkaline solutions, and mechanical forces. Therefore,
this reported fabric has the advantages of scalable fabrication, high
separation efficiency, stable recyclability, and excellent durability,
exhibiting the strong potential for industrial production
Robust and Durable Superhydrophobic Cotton Fabrics for Oil/Water Separation
By
introducing the incorporation of polyaniline and fluorinated
alkyl silane to the cotton fabric via a facile vapor phase deposition
process, the fabric surface possessed superhydrophobicity with the
water contact angle of 156° and superoleophilicity with the oil
contact angle of 0°. The as-prepared fabric can be applied as
effective materials for the separation of water and oil mixture with
separation efficiency as high as 97.8%. Compared with other materials
for oil/water separation, the reported process was simple, time-saving,
and repeatable for at least 30 times. Moreover, the obtained fabric
kept stable superhydrophobicity and high separation efficiency under
extreme environment conditions of high temperature, high humidity,
strong acidic or alkaline solutions, and mechanical forces. Therefore,
this reported fabric has the advantages of scalable fabrication, high
separation efficiency, stable recyclability, and excellent durability,
exhibiting the strong potential for industrial production
Prognostic Value of CD166 Expression in Cancers of the Digestive System: A Systematic Review and Meta-Analysis
<div><p>Objective</p><p>Many studies have reported the prognostic predictive value of CD166 as a cancer stem cell marker in cancers of the digestive system; however, its predictive value remains controversial. Here, we investigate the correlation between CD166 positivity in digestive system cancers and clinicopathological features using meta-analysis.</p><p>Methods</p><p>A comprehensive search in PubMed and ISI Web of Science through March of 2013 was performed. Only articles containing CD166 antigen immunohistochemical staining in cancers of the digestive system were included,including pancreatic cancer, esophageal cancer, gastric cancer and colorectal cancer. Data comparing 3- and 5-year overall survival along with other clinicopathological features were collected.</p><p>Results</p><p>Nine studies with 2553 patients who met the inclusion criteria were included for the analysis. The median rate of CD166 immunohistochemical staining expression was 56% (25.4%–76.3%). In colorectal cancer specifically, the results of a fixed-effects model indicated that CD166-positive expression was an independent marker associated with a smaller tumor burden (T category; RR = 0.93, 95%, CI: 0.88–0.98) but worse spread to nearby lymph nodes (N category; RR = 1.17, 95% CI: 1.05–1.30). The 5-year overall survival rate was showed relationship with cytoplasmic positive staining of CD166 (RR = 1.47 95% 1.21–1.79), but no significant association was found in the pool or any other stratified analysis with 3- or 5- year overall survival rate.</p><p>Conclusion</p><p>Based on the published studies, different cellular location of CD166 has distinct prognostic value and cytoplasmic positive expression is associated with worse prognosis outcome. Besides, our results also find CD166 expression indicate advanced T category and N-positive status in colorectal cancer specifically.</p></div
Flow chart for the selection of articles to include.
<p>Flow chart for the selection of articles to include.</p
Results of meta-analysis on CD166 expression.
a<p>PC:pancretic cancer, EC: esophageal cancer, GC: gastric cancer, CRC: colorectal cancer.</p>b<p>median of followup time among all studies included.</p>c<p>median of sample size among all studies included.</p
Characteristics of included studies.
<p>CA: cancer; H: high expression; L: low expression; NA:not available; TMA: tissue microarray.</p>*<p>data read by GetData Graph Digitizer.</p
CD166 stratified on staining pattern and 5-year overall survival rate in digestive cancer patients.
<p>CD166 stratified on staining pattern and 5-year overall survival rate in digestive cancer patients.</p
Simple and Rapid Way to a Multifunctionally Conductive Hydrogel for Wearable Strain Sensors
Conductive hydrogels have gained increasing attention
in the field
of wearable smart devices. However, it remains a big challenge to
develop a multifunctionally conductive hydrogel in a rapid and facile
way. Herein, a conductive tannic acid–iron/poly (acrylic acid)
hydrogel was synthesized within 30 s at ambient temperature by the
tannic acid–iron (TA@Fe3+)-mediated dynamic catalytic
system. The TA@Fe3+ dynamic redox autocatalytic pair could
efficiently activate the ammonium persulfate to initiate the free-radical
polymerization, allowing the gelation to occur easily and rapidly.
The resulting hydrogel exhibited enhanced stretchability (3560%),
conductivity (33.58 S/m), and strain sensitivity (gauge factor = 2.11).
When damaged, it could be self-healed through the dynamic and reversible
coordination bonds between the Fe3+ and COO– groups in the hydrogel network. Interestingly, the resulting hydrogel
could act as a strain sensor to monitor various human motions including
the huge movement of deformations (knuckle, wrist) and subtle motions
(smiling, breathing) in real time due to its enhanced self-adhesion,
good conductivity, and improved strain sensitivity. Also, the obtained
hydrogel exhibited efficient electromagnetic interference (EMI) shielding
performance with an EMI shielding effectiveness value of 24.5 dB in
the X-band (8.2–12.4 GHz). Additionally, it displayed antibacterial
properties, with the help of the activity of TA