ZmDIP
was cloned and its function against
Curvularia lunata
was analyzed, according to a previous finding on a drought-inducible protein in resistant maize identified through MALDI-TOF-MS/MS. The
...ZmDIP
expression varied in roots, leaf sheaths, and young, as well as old, leaves of different maize inbred lines. The
ZmDIP
transcript level changed in leaves over the course of time after inoculation with
C.
lunata
. A prokaryotic expression analysis demonstrated that the gene can regulate the salt stress tolerance of
Escherichia coli.
The
ZmDIP
transient expression in the maize leaf showed that the gene was also linked to leaf resistance against the
C.
lunata
infection.
ZmDIP
-mediated ROS and ABA signaling pathways were inferred to be closely associated with maize leaf resistance to the pathogen infection.
This study demonstrates the application of wooden-tip electrospray ionization mass spectrometry (wooden-tip ESI-MS) combined with multivariate statistical analysis for achieving a rapid quality ...assessment of
Qingkailing
products, which is a famous combinatorial herbal formula registered by
Chinese Pharmacopoeia
. By utilizing sharp wooden tips to load samples and induce ESI for mass spectrometric analysis, various ingredients with different chemical structures present in
Qingkailing
products were detected simultaneously without any sample pretreatment with an analysis speed of approximately 1 min per sample. There were 26 characteristic peaks in the negative ion wooden-tip ESI-MS fingerprint of
Qingkailing
, which were successfully identified by the collision-induced dissociation experiments. The developed method was applied to evaluate the quality and trace the origins of 16 batches of
Qingkailing
oral liquid and 9 batches of
Qingkailing
granule samples. By using multivariate statistical analysis on the obtained MS fingerprints, different
Qingkailing
samples were successfully differentiated, and their quality stability and consistency were also easily assessed. In addition, the qualified and damaged samples were distinguished unambiguously. Our results demonstrated that the combined application of wooden-tip ESI-MS and multivariate statistical analysis could be a rapid strategy for pharmaceutical analysis with promising prospects for tracing the origins and assessing the quality of herbal medicines and related products.
This study demonstrates the application of wooden-tip electrospray ionization mass spectrometry (wooden-tip ESI-MS) combined with multivariate statistical analysis for achieving a rapid quality assessment of
Qingkailing
products.
This study demonstrates the application of wooden-tip electrospray ionization mass spectrometry (wooden-tip ESI-MS) combined with multivariate statistical analysis for achieving a rapid quality ...assessment of Qingkailingproducts, which is a famous combinatorial herbal formula registered by Chinese Pharmacopoeia. By utilizing sharp wooden tips to load samples and induce ESI for mass spectrometric analysis, various ingredients with different chemical structures present in Qingkailingproducts were detected simultaneously without any sample pretreatment with an analysis speed of approximately 1 min per sample. There were 26 characteristic peaks in the negative ion wooden-tip ESI-MS fingerprint of Qingkailing, which were successfully identified by the collision-induced dissociation experiments. The developed method was applied to evaluate the quality and trace the origins of 16 batches of Qingkailingoral liquid and 9 batches of Qingkailinggranule samples. By using multivariate statistical analysis on the obtained MS fingerprints, different Qingkailingsamples were successfully differentiated, and their quality stability and consistency were also easily assessed. In addition, the qualified and damaged samples were distinguished unambiguously. Our results demonstrated that the combined application of wooden-tip ESI-MS and multivariate statistical analysis could be a rapid strategy for pharmaceutical analysis with promising prospects for tracing the origins and assessing the quality of herbal medicines and related products.
Eyelid tumors include tumors of orbit, conjunctiva, tissues of the eyeball and eye appendages, which seriously affect people's vision and health. The similarity of early benign and malignant ...structures makes it difficult for ophthalmologists lacking clinical experience to distinguish them. To address these issues, a target localization algorithm based on SE-SSD (ResNet50) is proposed, which integrates the channel attention mechanism SENet into the SSD algorithm to realize automatic diagnosis of benign and malignant eyelid tumors. Specifically, we utilize the SE-SSD (ResNet50) network to locate the lesion regions of eyelid tumors, and subsequently employ DenseNet121 to achieve benign and malignant classification of eyelid tumors. Experimental results demonstrate that compared with the SSD algorithm, the AP of SE-SSD (ResNet50) is increases by 0.029 on the test set. In the experiment for benign and malignant eyelid tumor classification, DenseNet121 achieves an AUC of 0.919 (95% CI: 0.863-0.961) and an accuracy of 90.9% (95% CI: 86.9-95.0) on the test set. The experimental results indicate that our model has excellent performance in the automatic diagnosis of benign and malignant eyelid tumors.
Based on the nonlinear continuum damage model （CDM） developed by Chaboehe, a modified model for high cycle fatigue of TC4 alloy was proposed. Unsymmetrical cycle fatigue tests were conducted on rod ...specimens at room temperature. Then the material parameters needed in the CDM were obtained by the fatigue tests, and the stress distribution of the specimen was calculated by FE method. Compared with the linear damage model （LDM）, the dam- age results and the life prediction of the CDM show a better agreement with the test and they are more precise than the LDM. By applying the CDM developed in this study to the life prediction of aeroengine blades, it is concluded that the root is the most dangerous region of the whole blade and the shortest life is 58 211 cycles. Finally, the Cox propor- tional hazard model of survival analysis was applied to the analysis of the fatigue reliability. The Cox model takes the covariates into consideration, which include diameter, weight, mean stress and tensile strength. The result shows that the mean stress is the only factor that accelerates the fracture process.
New standards in the automotive industry highlighted the situation of the actual operation of the alternator and
a variety of harsh environment simulation limit test. Using new standards in the ...automotive industry as a guide, this article
presents a virtual instrument based on the durability of automobile generator integrated test system. The design adopt virtual
instrument technology in designing the system, Graphic language, LabVIEW is applied in writing measure-control
program. The system uses a lot of features on LABVIEW, including Data acquisition, control of serials port, etc. Test implementation
uses the host computer
via
RS232 and RS485 communication port and the data acquisition card, NI PCI-
6221, to control the frequency hybrid motor, temperature control box, electronic loads and other intelligent devices, and to
simulate a variety of automotive alternator working conditions and real-time monitoring to monitor the status of generators.
Using this system, two separate automobile alternators can be tested in terms of high-speed vehicle impact and high
temperature durability test and electrical performance test and other tests at the same time. As a result, the generator speed
measurement error is within 1%, the control error is within 2%, voltage and current measurement errors were within 0.5%
and 0.4%, which meets the requirements.
We report two new propeller-shaped perylene diimide (
PDI
) acceptors based on tetraphenylethylene (
TPE
) as the core and flanked with S/Se-fused
PDIs
, named as
TPE-PDI
4
-S
and
TPE-PDI
4
-Se
. ...Compared to the sulfur-annulated counterpart,
TPE-PDI
4
-Se
exhibits a blue-shifted absorption spectrum, stronger absorption in the region of 400-600 nm, higher LUMO energy level and twisted molecular geometry. The
TPE-PDI
4
-Se
based device with
PBDB-T1
as the donor achieved a power conversion efficiency (PCE) of 7.63% along with a high
V
OC
of 1.08 V, a
J
SC
of 10.28 mA cm
−2
and a high fill factor of 68.8%, a 11.4% boost in PCE with respect to the
TPE-PDI
4
-S
based control device (6.85%). The high photovoltaic performance of the
TPE-PDI
4
-Se
based device can be attributed to its relatively high-lying LUMO level, complementary absorption spectra with the donor material, relatively favorable morphology and balanced carrier transport. To the best of our knowledge, a PCE of 7.63% is among the highest values for
TPE
core-based non-fullerene organic solar cells. Overall, our work provides a simple and effective molecule-designing method to promote the PCE of non-fullerene OSCs.
High efficiencies of 6.85% and 7.63% are obtained in non-fullerene OSCs using
TPE-PDI
4
-S
/
TPE-PDI
4
-Se
as the acceptors and
PBDB-T1
as the donor.
There has been growing interest in the effectual strategy of constructing non-fullerene acceptors for organic solar cells that may overcome the defect of traditional fullerene-based acceptors. ...Herein, two novel push-pull (acceptor-donor-acceptor) type small-molecule acceptors, that is,
TPA-PDI
2
and
TPA-PDI
3
, with triphenylamine (
TPA
) as the core unit and pyran-annulated perylene diimides (
Py-PDIs
) as peripheral groups are designed and synthesized for non-fullerene organic solar cells (OSCs). After device optimization, OSCs based on
TPA-PDI
3
demonstrate good device performance with a power conversion efficiency (PCE) as high as 5.84%, surpassing the
TPA-PDI
2
-based counterparts fabricated under identical conditions (1.314% PCE). The high efficiency for
TPA-PDI
3
can be attributed to the complementary absorption spectra with the donor material (
PBDB-T
), balanced carrier transport and favorable morphologies. To the best of our knowledge, this PCE of 5.84% is among the highest values based on ethynyl-functionalized
TPA
-shaped non-fullerene acceptors so far.
Through the coupling of acetylene substituted triphenylamine and pyran-annulated perylene diimides, two novel non-fullerene electron acceptors, coded as
TPA-PDI
2
and
TPA-PDI
3
, were designed, synthesized and applied in BHJ organic solar cells.
Smart materials with ultralong phosphorescence are rarely investigated and reported. Herein we report on a series of molecules with unique dynamic ultralong organic phosphorescence (UOP) features, ...enabled by manipulating intermolecular interactions through UV light irradiation. Our experimental data reveal that prolonged irradiation of single‐component organic phosphors of PCzT, BCzT, and FCzT under ambient conditions can activate UOP with emission lifetimes spanning from 1.8 to 1330 ms. These phosphors can also be deactivated back to their original states with short‐lived phosphorescence by UV irradiation for 3 h at room temperature or through thermal treatment. Additionally, the dynamic UOP was applied successfully for a visual anti‐counterfeiting application. These findings may provide unique insight into dynamic molecular motion for optical processing and expand the scope of smart‐response materials for broader applications.
Die Bestrahlung organischer Einkomponenten‐Phosphore aktiviert eine ultralange organische Phosphoreszenz mit einer Zunahme der Emissionslebensdauer von 1.8 bis 1330 ms, die über die intermolekulare Wechselwirkung modulierbar ist. Die Phosphore konnten binnen 3 h unter Umgebungsbedingungen oder durch Erhitzen zu ihrem Ursprungszustand mit kurzlebiger Phosphoreszenz deaktiviert werden. Eine Anwendung im Fälschungsschutz wurde demonstriert.
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